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NANO ENERGY (2023)

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Ir-doped Co3O4 as efficient electrocatalyst for acidic oxygen evolution reaction

Yusheng Xie et al.

Summary: In this study, a low iridium content (2.88 wt%) iridium doped Co3O4 (Ir-Co3O4) catalyst was developed for efficient acidic oxygen evolution reaction (OER). Systemic characterizations suggest that iridium can be uniformly doped into the lattice of Co3O4, causing a certain distortion. The electrochemical results show that Ir-Co3O4 nanoparticles exhibit significantly improved OER activity and stability in 0.5 M H2SO4 solution compared to pure Co3O4, with a decrease in overpotential from 382 mV to 225 mV at a current density of 10 mA cm-2 and a decrease in Tafel slope from 101.7 mV dec-1 to 64.1 mV dec-1. Additionally, Ir-Co3O4 demonstrates excellent electrocatalytic durability for continuous operation of 130 hours.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2023)

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Article Chemistry, Inorganic & Nuclear

Understanding the stabilization effect of the hydrous IrOx layer formed on the iridium oxide surface during the oxygen evolution reaction in acid

Jun Qi et al.

Summary: In this work, the surface degradation behaviors of BaIrO3 and SrIrO3 catalysts in acid were investigated. BaIrO3 showed quick fading of OER activity due to the formation of deposits that blocked reactive sites, whereas SrIrO3 underwent surface amorphization and exhibited stable catalytic activity with suppressed iridium dissolution. The results suggest that the amorphous IrOx layer serves as a protective layer and plays a role in achieving a dynamic balance at the catalyst-electrolyte interface.

INORGANIC CHEMISTRY FRONTIERS (2023)

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Article Chemistry, Physical

Ambiguities and best practices in the determination of active sites and real surface area of monometallic electrocatalytic interfaces

Sengeni Anantharaj et al.

Summary: Accurately determining the number of electrocatalytically accessible sites (ECAS) and real surface area (RSA) of electrocatalysts is crucial for determining intrinsic activity markers in energy conversion electrocatalysis. Transient voltammetric sweeping techniques, such as underpotential deposition (UPD), stripping, and redox-charge integration, can provide relatively precise determination of ECAS and RSA for monometallic electrocatalysts and electrocatalysts with a single type of active site. However, the transient nature of these sweeping techniques makes the determination of ECAS and RSA less reliable.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

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Article Chemistry, Physical

Reducible Co3+-O Sites of Co-Ni-P-OX on CeO2 Nanorods Boost Acidic Water Oxidation via Interfacial Charge Transfer-Promoted Surface Reconstruction

Jianyun Liu et al.

Summary: Developing efficient and durable low-cost electrocatalysts is a bottleneck for water splitting using proton-exchange membrane electrolyzers. In this study, a heterostructured CeO2 nanorod-supported Co-Ni-P oxide catalyst is prepared and the valence states of Co is precisely tuned. The increased Co states promote the deprotonation of water molecules and accelerate the oxygen evolution reaction (OER) kinetics, leading to extraordinarily low OER overpotentials.

ACS CATALYSIS (2023)

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Article Engineering, Environmental

The critical role of A, B-site cations and oxygen vacancies on the OER electrocatalytic performances of Bi0.15Sr0.85Co1-xFexO3-d (0.2=x=1) perovskites in alkaline media

Jing Li et al.

Summary: The development of perovskite-type electrocatalysts with high activity, excellent durability, and affordable cost is important for promoting clean energy technologies. In this study, Bi(0.15)Sr(0.85)Co(1-x)FexO(3-delta) (x=0.2, 0.4, 0.6, 0.8, 1) perovskite materials were prepared and their OER electrocatalytic activity and durability were investigated. The results showed that the composition BiSC0.8F0.2 exhibited impressive electrocatalytic performances with low overpotential and excellent long-time durability.

CHEMICAL ENGINEERING JOURNAL (2023)

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Article Chemistry, Physical

Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation

Jing Zhang et al.

Summary: The activation of surface reconstruction on perovskite oxide through anion defect engineering, such as the incorporation of fluorine, can greatly enhance the catalytic activity for oxygen evolution reaction (OER).

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

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Realizing High and Stable Electrocatalytic Oxygen Evolution for Iron-Based Perovskites by Co-Doping-Induced Structural and Electronic Modulation

Sixuan She et al.

Summary: This study introduces an Fe-rich Sr0.95Ce0.05Fe0.9Ni0.1O3-delta (SCFN) perovskite oxide with minor Ce/Ni co-doping as a high-performance OER electrocatalyst. SCFN exhibits significantly enhanced mass-specific activity compared to the parent oxide and demonstrates excellent operational durability under alkaline OER conditions, making it a promising and universal strategy for improving Fe-based perovskite oxides.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Physical

Ga doped Ni3S2 ultrathin nanosheet arrays supported on Ti3C2-MXene/Ni foam: An efficient and stable 3D electrocatalyst for oxygen evolution reaction

Rui Wang et al.

Summary: In this study, Ga-doped Ni3S2 nanosheet arrays were synthesized and demonstrated excellent catalytic performance for the oxygen evolution reaction (OER). The findings suggest that the modulation of electronic structure and morphology can effectively enhance the activity and durability of the catalyst.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

Porous Fe5Si3 intermetallic anode for the oxygen evolution reaction in acidic electrolytes

Botao Shen et al.

Summary: A reactive synthesis method was used to synthesize a porous electrode consisting of Fe5Si3 intermetallic, which shows catalytic activity towards OER. The amorphous silica formed on the electrode surface has multifunctional properties, acting as both a protective layer and an electrocatalyst. The Si-based intermetallics can be extended to include other OER catalytic elements.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Electrochemistry

Worrisome Exaggeration of Activity of Electrocatalysts Destined for Steady-State Water Electrolysis by Polarization Curves from Transient Techniques

Sengeni Anantharaj et al.

Summary: Cyclic and linear sweep voltammetry techniques misjudge the performance of water splitting electrocatalysts, and it is recommended to use a more precise alternative technique such as sampled-current voltammetry (SCV) for evaluation.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2022)

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Article Chemistry, Applied

Boosting the oxygen evolution reaction through migrating active sites from the bulk to surface of perovskite oxides

Zhengsen Wang et al.

Summary: Perovskite oxides show promise in electrocatalytic water splitting. Migration of active elements in perovskite is found to be an effective strategy to increase the quantity and activity of active sites, providing new insights for designing efficient OER catalysts.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Nanoscience & Nanotechnology

Controlling the Cation Exsolution of Perovskite to Customize Heterostructure Active Site for Oxygen Evolution Reaction

Yicheng Wei et al.

Summary: This study demonstrates the artificial construction of a heterostructure to control the active site formation and reconstruction in perovskite oxides, leading to improved oxygen evolution reaction (OER) activity.

ACS APPLIED MATERIALS & INTERFACES (2022)

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A Functionally Stable RuMn Electrocatalyst for Oxygen Evolution Reaction in Acid

Lu An et al.

Summary: This study reported a robust RuMn electrochemical catalyst with excellent durability in the acidic oxygen evolution reaction environment, setting a remarkable stability record.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Physical

Realizing robust and efficient acidic oxygen evolution by electronic modulation of 0D/2D CeO2 quantum dots decorated SrIrO3 nanosheets

Maosheng You et al.

Summary: This study proposes a 0D/2D heterostructure consisting of CeO2 quantum dots decorated SrIrO3 nanosheets for durable and active oxygen evolution reaction (OER) in harsh acidic environment. Theoretical calculations reveal that the coupling of CeO2 with electronic rearrangement effectively lowers the energy barrier of OER and mitigates Sr leaching. Hence, the heterostructure exhibits excellent electrocatalytic performance, surpassing most perovskite-related electrocatalysts in acidic media.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Physical

Role of surface steps in activation of surface oxygen sites on Ir nanocrystals for oxygen evolution reaction in acidic media

Myeongjin Kim et al.

Summary: This study monitors the structural evolution of Ir nanocrystals under acidic oxygen evolution reaction (OER) conditions and finds that the concave Ir surface with high-index planes promotes surface IrOx formation, leading to increased OER activity. It establishes the thermodynamic preference of Ir high-index surfaces for oxygen atom adsorption and surface oxide formation, providing new principles for the design of nanoscale OER electrocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

High-entropy alloy stabilized active Ir for highly efficient acidic oxygen evolution

Han Zhu et al.

Summary: In this study, a breakthrough in using high-entropy alloy (HEA) as substrates to stabilize active Ir at the nanoscale was reported. Fe, Co, Ni, and Ru were used as stabilizing structural elements. The FeCoNiIrRu HEA nanoparticles were synthesized in electrospun carbon nano-fibers (CNFs) and exhibited thermodynamic induced phase evolution. The FeCoNiIrRu/CNFs showed excellent oxygen evolution reaction (OER) activity with low overpotential and high mass activity. The hysteretic diffusion effect of HEA inhibited metal leaching and dissolution, leading to excellent durability. The OER performance could be optimized by changing metal compositions and calcination temperatures. In situ Raman spectra revealed the formation of intermediates on HEA NP surfaces. The redistribution of electron density in FeCoNiIrRu NPs promoted the conversion of *OOH and generation of O-2.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Intermetallic IrGa-IrOx core-shell electrocatalysts for oxygen evolution

Lin-Wei Chen et al.

Summary: The study presents a low-Ir core-shell OER electrocatalyst with high activity in acidic media, showing a significantly improved OER performance compared to commercial Ir/C catalyst. The enhanced activity of the IrGa-IMC@IrOx catalysts is attributed to the modified electronic structure of IrOx induced by the intermetallic IrGa core, leading to improved adsorption capacity for O and OH binding and lower energy barrier for OER rate-determining steps.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Nanostructured Intermetallic Nickel Silicide (Pre)Catalyst for Anodic Oxygen Evolution Reaction and Selective Dehydrogenation of Primary Amines

Indranil Mondal et al.

Summary: The development of metal catalysts is crucial for accelerating the oxygen evolution reaction and producing green hydrogen on a large scale. This study presents a novel approach using intermetallic nickel silicide as a promising precatalyst for anodic oxygen evolution reaction. Additionally, an anodic-coupled electrosynthesis method is established to selectively oxidize organic amines to value-added organocyanides, boosting the cathodic reaction. The activated form of the catalyst exhibits high efficiency and long-term durability.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Applied

An ultrathin two-dimensional iridium-based perovskite oxide electrocatalyst with highly efficient {001} facets for acidic water oxidation

Lan Yang et al.

Summary: This study presents a synthesis method for producing 2D ultrathin SrIrO3 perovskite with high surface area. The 2D-SIO nanomaterial exhibits highly active and stable electrocatalytic performance for the oxygen evolution reaction under acidic conditions. The exposed {001} facets are found to be crucial for its catalytic activity and structural stability.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

Protonated Iridate Nanosheets with a Highly Active and Stable Layered Perovskite Framework for Acidic Oxygen Evolution

Hui Chen et al.

Summary: Ir-based perovskite oxides have shown promise as electrocatalysts for oxygen evolution reaction (OER) in an acidic medium, but their uncontrollable surface amorphization and structural instability have been major challenges. In this study, we report a high-yield chemical exfoliation method to obtain protonated colloidal nanosheets with an undamaged perovskite framework from Ruddlesden-Popper layered perovskite Sr2IrO4. These protonated perovskite nanosheets show potential to overcome the trade-off between OER activity and structural stability. The 2D morphology and uniformity of these nanosheets enable the fabrication of an ultralow-Ir-loading catalyst film with significantly higher activity and comparable Ir leaching to the IrO2 catalyst film during OER. The presence of structural hydroxyl groups on the surface of protonated nanosheets is found to contribute to the catalytic cycle of OER, representing a non-traditional adsorbate evolution mechanism for the protonated layered perovskite framework.

ACS CATALYSIS (2022)

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Article Electrochemistry

In-situ reconstructed hollow iridium-cobalt oxide nanosphere for boosting electrocatalytic oxygen evolution in acid

Jiuyi Sun et al.

Summary: In this study, a hollow IrCoOx nanosphere was fabricated via in-situ electrochemistry reconstruction strategy, which exhibits low Ir-loading and excellent OER catalytic activity in acidic environment. The superior activity of the developed catalyst is attributed to its hollow structure, the abundant crystalline/amorphous heterostructure in the IrOx-enriched shell, and the atomic heterointerfaces between Co and Ir oxides.

ELECTROCHIMICA ACTA (2022)

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Review Chemistry, Physical

Structural engineering of rare-earth-based perovskite electrocatalysts for advanced oxygen evolution reaction

Xiang Peng et al.

Summary: Structural engineering of rare-earth-based perovskites for oxygen evolution reaction (OER) can enhance the performance and stability of electrocatalysts, but there are still challenges and opportunities.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

Dos and don'ts in screening water splitting electrocatalysts

Sengeni Anantharaj et al.

Summary: Examining water splitting electrocatalysts accurately is crucial in the field of materials science, but the recent boom in this area has led to misinterpreted data and misleading information. A clear guideline is needed to address these issues.

ENERGY ADVANCES (2022)

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Article Chemistry, Physical

iR drop correction in electrocatalysis: everything one needs to know!

Sengeni Anantharaj et al.

Summary: Direct current (DC) voltammetric techniques, despite being inferior to alternating current (AC) techniques and other advanced voltammetric techniques, have been widely used due to their simplicity. However, a major issue in controlled-potential DC techniques is the potential drop at the interface. Current literature contains numerous incorrect potential drop corrections due to the challenges in understanding and following the correct protocols.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Review Chemistry, Multidisciplinary

Layered 2D PtX2 (X = S, Se, Te) for the electrocatalytic HER in comparison with Mo/WX2 and Pt/C: are we missing the bigger picture?

Sengeni Anantharaj et al.

Summary: Platinum is the best catalyst for the hydrogen evolution reaction, but its scarcity has led researchers to explore alternatives like PtX2, which have shown poorer activity than expected; nevertheless, studies on the structure-activity relationship and potential mechanisms remain essential in electrocatalysis research.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Strategies and Perspectives to Catch the Missing Pieces in Energy-Efficient Hydrogen Evolution Reaction in Alkaline Media

Sengeni Anantharaj et al.

Summary: Transition metal hydroxides and their heterostructures have been identified as highly active electrocatalysts for hydrogen evolution reaction in alkaline water electrolysis. The lattice hydroxide anions in metal hydroxides enhance the catalytic activity, but their poor electronic conductivity has been a concern. Advancements in heterostructured hydroxide materials with metallic and/or semiconducting phases have overcome this limitation, making them essential for energy-efficient alkaline HER.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Electronic tuning of SrIrO3 perovskite nanosheets by sulfur incorporation to induce highly efficient and long-lasting oxygen evolution in acidic media

Maosheng You et al.

Summary: The S-doped M-SrIrO3 perovskite nanosheets can enhance the performance of oxygen evolution reaction in acidic media, showing better activity than traditional IrO2.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

Materials Engineering in Perovskite for Optimized Oxygen Evolution Electrocatalysis in Alkaline Condition

Feifei Dong et al.

Summary: The study investigates the performance of nickel-substituted perovskite Ba0.5Sr0.5Co0.8Fe0.2NixO3-δ as an OER catalyst, with BSCFN20 showing the best OER activity with low overpotential and Tafel slope. In water splitting experiments, using BSCFN20 as the anode and Pt/C as the cathode can achieve 50 mA cm(-2) with a low voltage, and BSCFN20||Pt/C remains stable for a long period, surpassing the state-of-the-art RuO2||Pt/C counterpart.

SMALL (2021)

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Article Chemistry, Analytical

Why shouldn't double-layer capacitance (Cdl) be always trusted to justify Faradaic electrocatalytic activity differences?

Sengeni Anantharaj et al.

Summary: The electrocatalytic water splitting activity trend is mainly justified by using two activity markers: double-layer capacitance (Cdl) and charge transfer resistance (Rct). However, in some cases, there is a disagreement between non-Faradaic Cdl and Faradaic catalytic activity trend, raising questions about the credibility of using non-Faradaic Cdl to justify purely Faradaic electrocatalytic activity trends.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2021)

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Article Physics, Applied

Development of Perovskite Oxide‐Based Electrocatalysts for Oxygen Evolution Reaction (Small 43/2021)

Dong Liu et al.

Small (2021)

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Article Chemistry, Physical

A-Site Management Prompts the Dynamic Reconstructed Active Phase of Perovskite Oxide OER Catalysts

Yu Sun et al.

Summary: Perovskite oxides, with a refined A-site management strategy, can enhance OER performance through promoting the surface reconstruction of the active phase. The A-site Ce doping in particular shows a strong correlation with the dynamic structure-activity relationship during OER, providing insights for accurate design of high-efficiency perovskite OER electrocatalysts.

ADVANCED ENERGY MATERIALS (2021)

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Review Chemistry, Physical

The Fe Effect: A review unveiling the critical roles of Fe in enhancing OER activity of Ni and Co based catalysts

Sengeni Anantharaj et al.

Summary: This article discusses the critical role of Fe in Ni/Co-based OECs in the oxygen evolution reaction, highlighting several contradictory conclusions found in the research. It emphasizes the importance of understanding the Fe effect for efficient hydrogen generation in alkaline medium.

NANO ENERGY (2021)

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Article Nanoscience & Nanotechnology

Proton-Assisted Reconstruction of Perovskite Oxides: Toward Improved Electrocatalytic Activity

Xiaojuan Cao et al.

Summary: This study developed a proton-assisted approach to improve the performance of perovskite oxide catalysts, inducing protonic defects formation and lattice expansion of perovskite through protonation, leading to the fracture of big particles into small nanoparticles and the generation of heterostructure on the surface, enhancing the activity while maintaining stability.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Metal Substitution Steering Electron Correlations in Pyrochlore Ruthenates for Efficient Acidic Water Oxidation

Ning Zhang et al.

Summary: This study successfully improves the OER activity of pyrochlore ruthenate in acidic media by partially substituting Y3+ ions, achieving high intrinsic mass activity and excellent stability. By manipulating the electronic states to enhance Ru-O covalency and rearrange band alignment, the charge transfer energy is reduced, promoting the occurrence of chemical reactions.

ACS NANO (2021)

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Article Chemistry, Physical

Free-standing trimodal porous NiZn intermetallic and Ni heterojunction as highly efficient hydrogen evolution electrocatalyst in the alkaline electrolyte

Qiuxia Zhou et al.

Summary: An innovative self-supporting intermetallic catalyst with superior electronic modulation and trimodal porous structure has been developed to address the sluggish kinetics of hydrogen evolution reaction, showing comparable catalytic performance to platinum and exceptional stability. This work presents a powerful and scalable approach for screening high-density active sites non-precious intermetallic nanocatalysts.

NANO ENERGY (2021)

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Article Multidisciplinary Sciences

Lattice site-dependent metal leaching in perovskites toward a honeycomb-like water oxidation catalyst

Yubo Chen et al.

Summary: By manipulating the leaching of Sr and Sc/Co from different geometric sites, this study demonstrates that dual-site metal leaching induced surface reconstruction can significantly enhance the water oxidation activity of perovskite oxide catalysts.

SCIENCE ADVANCES (2021)

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Article Chemistry, Physical

In Situ-Generated Oxide in Sn-Doped Nickel Phosphide Enables Ultrafast Oxygen Evolution

Tofik Ahmed Shifa et al.

Summary: This study highlights the significant role of Sn in accelerating the electron transfer kinetics of Ni5P4 nanosheets in the oxygen evolution reaction (OER). The presence of electrochemically induced Ni-Sn oxides near phosphides was found to be responsible for the observed catalytic activity. Experimental and theoretical calculations supported these findings, paving the way for practical implementation of hydrogen production through water splitting and other catalytic reactions.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

The Pitfalls of Using Potentiodynamic Polarization Curves for Tafel Analysis in Electrocatalytic Water Splitting

Sengeni Anantharaj et al.

ACS ENERGY LETTERS (2021)

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Editorial Material Chemistry, Multidisciplinary

The Significance of Properly Reporting Turnover Frequency in Electrocatalysis Research

Sengeni Anantharaj et al.

Summary: Turnover frequency (TOF) has long been used as an accurate indicator of the intrinsic activity of catalysts in electrocatalytic reactions, but is often not properly reported. While current density is significant in determining apparent activity, TOF can more accurately reflect intrinsic activity free from interfering phenomena, yet remains underused in electrocatalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Corrosion engineering derived Ga doped CoSe2 nanosheets intrinsically active for oxygen evolution reaction

Shun Zhang et al.

Summary: The Ga-doped CoSe2 nanosheets prepared by a combined magnetron sputtering, Co-Ga alloying, dealloying and selenization strategy exhibited excellent OER performance on stainless steel mesh, with ultralow overpotential and small Tafel slope, and negligible activity decay after 25 hours of continuous operation. The enhanced OER performance of the catalyst can be attributed to plentiful oxygen vacancies, Ga doping, unique roughened nanosheets structure and substrate (SSM), providing a promising and controllable synthetic strategy for low-cost CoSe2 based electrocatalyst in practical applications of water electrolysis.

JOURNAL OF POWER SOURCES (2021)

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Review Materials Science, Multidisciplinary

Regulation of Perovskite Surface Stability on the Electrocatalysis of Oxygen Evolution Reaction

Jia-Wei Zhao et al.

Summary: Perovskites have attracted attention for their high OER performance and low cost in electrocatalytic water splitting. Surface stability of perovskite is closely related to its chemical component and can be improved through surface engineering, which in turn enhances OER performance. A new descriptor (stability level) is proposed to optimize OER catalytic performance by tuning the surface structure of perovskite.

ACS MATERIALS LETTERS (2021)

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Article Chemistry, Multidisciplinary

Designing Zn-doped nickel sulfide catalysts with an optimized electronic structure for enhanced hydrogen evolution reaction

Wenjun He et al.

Summary: This study presents the design of Zn-doped Ni3S2 nanosheet arrays to enhance the catalytic performance of the hydrogen evolution reaction. The cation-doping engineering method provides an efficient approach to improve the intrinsic activities of transition-metal sulfides for the development of nonprecious electrocatalysts.

NANOSCALE (2021)

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Review Chemistry, Physical

Ru-tweaking of non-precious materials: the tale of a strategy that ensures both cost and energy efficiency in electrocatalytic water splitting

S. Anantharaj

Summary: This review highlights the recent developments and research trends in utilizing Ru catalyst in water electrolysis, discussing its performance and mechanisms. Strategies for improving the water splitting catalyst performance by tweaking Ru are proposed.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Intermetallic Fe6Ge5 formation and decay of a core-shell structure during the oxygen evolution reaction

J. Niklas Hausmann et al.

Summary: Intermetallic iron germanide (Fe6Ge5) is reported as a novel oxygen evolution reaction (OER) precatalyst with a Tafel slope of 32 mV dec(-1) and an overpotential of 272 mV at 100 mA cm(-2) in alkaline media. Furthermore, the in situ formation of a core-shell like structure that slowly collapses under OER conditions is uncovered.

CHEMICAL COMMUNICATIONS (2021)

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Highly Efficient Perovskite-Based Electrocatalysts for Water Oxidation in Acidic Environments: A Mini Review

Hee Jo Song et al.

Summary: PEMWE is a promising technology for generating clean hydrogen fuels, but the expensive noble metal electrocatalysts and slow OER kinetics in acidic media hinder its commercialization. Developing noble-metal-reduced perovskite oxide electrocatalysts with high activity and acid compatibility is crucial for the future viability of PEMWE.

ADVANCED ENERGY MATERIALS (2021)

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Recent Development of Ni/Fe-Based Micro/Nanostructures toward Photo/Electrochemical Water Oxidation

Rui Gao et al.

ADVANCED ENERGY MATERIALS (2020)

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Developments and Perspectives in 3d Transition-Metal-Based Electrocatalysts for Neutral and Near-Neutral Water Electrolysis

Sengeni Anantharaj et al.

ADVANCED ENERGY MATERIALS (2020)

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Article Energy & Fuels

Superhydrophilic Al-Doped NiP2 Nanosheets as Efficient Electrocatalysts for Hydrogen Evolution Reaction

Hao Tian et al.

ENERGY TECHNOLOGY (2020)

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Boron-Induced Electronic-Structure Reformation of CoP Nanoparticles Drives Enhanced pH-Universal Hydrogen Evolution

Erping Cao et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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B-doping-induced amorphization of LDH for large-current-density hydrogen evolution reaction

Hongyuan Yang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Synthesis of a Hierarchically Porous C/Co3O4 Nanostructure with Boron Doping for Oxygen Evolution Reaction

Lianli Zou et al.

CHEMISTRY-AN ASIAN JOURNAL (2020)

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Article Electrochemistry

Core-shell structured ZnCo/NC@MoS2 electrocatalysts for tunable hydrogen evolution reaction

Jianhui Feng et al.

ELECTROCHIMICA ACTA (2020)

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Metal-organic framework-derived M (M = Fe, Ni, Zn and Mo) doped Co9S8 nanoarrays as efficient electrocatalyst for water splitting: The combination of theoretical calculation and experiment

Xiaoqiang Du et al.

JOURNAL OF CATALYSIS (2020)

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Amorphous Catalysts and Electrochemical Water Splitting: An Untold Story of Harmony

Sengeni Anantharaj et al.

SMALL (2020)

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Chemically Deposited Amorphous Zn-Doped NiFeOxHy for Enhanced Water Oxidation

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ACS CATALYSIS (2020)

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Alkaline Water Electrolysis Powered by Renewable Energy: A Review

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PROCESSES (2020)

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Recent Advances in Noble Metal (Pt, Ru, and Ir)-Based Electrocatalysts for Efficient Hydrogen Evolution Reaction

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ACS OMEGA (2020)

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Monoclinic SrIrO3: An Easily Synthesized Conductive Perovskite Oxide with Outstanding Performance for Overall Water Splitting in Alkaline Solution

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CHEMISTRY OF MATERIALS (2020)

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The self-supported Zn-doped CoNiP microsphere/thorn hierarchical structures as efficient bifunctional catalysts for water splitting

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ELECTROCHIMICA ACTA (2020)

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2-Methylimidazole directed ambient synthesis of zinc-cobalt LDH nanosheets for efficient oxygen evolution reaction

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Ru Nanoclusters Coupled on Co/N-Doped Carbon Nanotubes Efficiently Catalyzed the Hydrogen Evolution Reaction

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ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2020)

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Appropriate Use of Electrochemical Impedance Spectroscopy in Water Splitting Electrocatalysis

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CHEMELECTROCHEM (2020)

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CoOx(OH)2(1-x) doped with Sn urchin-like spheres for enhanced oxygen evolution reaction

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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING (2020)

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Perovskite-Type Solid Solution Nano-Electrocatalysts Enable Simultaneously Enhanced Activity and Stability for Oxygen Evolution

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ADVANCED MATERIALS (2020)

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Developments in DNA metallization strategies for water splitting electrocatalysis: A review

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ADVANCES IN COLLOID AND INTERFACE SCIENCE (2020)

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Efficient acidic oxygen evolution reaction electrocatalyzed by iridium -based 12L-perovskites comprising trinuclear face -shared IrO 6 octahedral strings

Ruiqin Gao et al.

JOURNAL OF ENERGY CHEMISTRY (2020)

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Well-dispersed Pt nanodots interfaced with Ni(OH)2 on anodized nickel foam for efficient hydrogen evolution reaction

Yanfang Gu et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Nickel selenides as pre-catalysts for electrochemical oxygen evolution reaction: A review

Sengeni Anantharaj et al.

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Selective Surface Reconstruction of a Defective Iridium-Based Catalyst for High-Efficiency Water Splitting

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Multiple-interface relay catalysis: Enhancing alkaline hydrogen evolution through a combination of Volmer promoter and electrical-behavior regulation

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Aluminum doped nickel-molybdenum oxide for both hydrogen and oxygen evolution reactions

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Enabling Iron-Based Highly Effective Electrochemical Water-Splitting and Selective Oxygenation of Organic Substrates through In Situ Surface Modification of Intermetallic Iron Stannide Precatalyst

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The electropositive environment of Rh in Rh1Sn2/SWNTs for boosting trifunctional electrocatalysis

Jun Zhao et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Water electrolysers with closed and open electrochemical systems

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Zinc ion induced three-dimensional Co9S8 nano-neuron network for efficient hydrogen evolution

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Accelerating water dissociation in bipolar membranes and for electrocatalysis

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Acidic Oxygen Evolution Reaction Activity-Stability Relationships in Ru-Based Pyrochlores

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ACS CATALYSIS (2020)

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The role of adsorbed hydroxide in hydrogen evolution reaction kinetics on modified platinum

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A high-efficiency liquid hydrogen storage system cooled by a fuel-cell-driven refrigerator for hydrogen combustion heat recovery

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Strain-modulated Ni3Al alloy promotes oxygen evolution reaction

Mei Han et al.

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Al-doped nickel sulfide nanosheet arrays as highly efficient bifunctional electrocatalysts for overall water splitting

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Exploring CoP core-shell nanosheets by Fe and Zn dual cation doping as efficient electrocatalysts for overall water splitting

Pengcheng Wang et al.

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Engineering the hydrogen evolution reaction of transition metals: effect of Li ions

Anku Guha et al.

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Enhanced oxygen evolution catalysis by aluminium-doped cobalt phosphide through in situ surface area increase

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Fe, Al-co-doped NiSe2 nanoparticles on reduced graphene oxide as an efficient bifunctional electrocatalyst for overall water splitting

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Fundamental understanding of the acidic oxygen evolution reaction: mechanism study and state-of-the-art catalysts

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Progress in nickel chalcogenide electrocatalyzed hydrogen evolution reaction

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Synthesis of popcorn-shaped gallium-platinum (GaPt3) nanoparticles as highly efficient and stable electrocatalysts for hydrogen evolution reaction

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ELECTROCHIMICA ACTA (2019)

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Zn-doped MoSe2 nanosheets as high-performance electrocatalysts for hydrogen evolution reaction in acid media

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ELECTROCHIMICA ACTA (2019)

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Multi-active sites derived from a single/double perovskite hybrid for highly efficient water oxidation

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ELECTROCHIMICA ACTA (2019)

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Electrodeposited Ni-Co-Sn alloy as a highly efficient electrocatalyst for water splitting

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

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High hydrogen evolution performance of Al doped CoP3 nanowires arrays with high stability in acid solution superior to Pt/C

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One-pot hydrothermal synthesis of Al-doped MoS2@graphene aerogel nanocomposite electrocatalysts for enhanced hydrogen evolution reaction

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RESULTS IN PHYSICS (2019)

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Single platinum atoms embedded in nanoporous cobalt selenide as electrocatalyst for accelerating hydrogen evolution reaction

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La1.5Sr0.5NiMn0.5Ru0.5O6 Double Perovskite with Enhanced ORR/OER Bifunctional Catalytic Activity

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Na-doped ruthenium perovskite electrocatalysts with improved oxygen evolution activity and durability in acidic media

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NATURE COMMUNICATIONS (2019)

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Zn Doped FeCo Layered Double Hydroxide Nanoneedle Arrays with Partial Amorphous Phase for Efficient Oxygen Evolution Reaction

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Respective influence of stoichiometry and NiOOH formation in hydrogen and oxygen evolution reactions of nickel selenides

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Co-doped SnS2 nanosheet array for efficient oxygen evolution reaction electrocatalyst

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Super-Exchange Interaction Induced Overall Optimization in Ferromagnetic Perovskite Oxides Enables Ultrafast Water Oxidation

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SMALL (2019)

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An efficient CoOx-SnOx(Sb doped)/Ti electrocatalyst for the oxygen evolution reaction

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APPLIED SURFACE SCIENCE (2019)

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Surface Reconstruction of La0.8Sr0.2Co0.8Fe0.2O3-δ for Superimposed OER Performance

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Hierarchical Zn-Doped CoO Nanoflowers for Electrocatalytic Oxygen Evolution Reaction

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CHEMCATCHEM (2019)

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A simple approach to tailor OER activity of SrxCo0.8Fe0.2O3 perovskite catalysts

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Theoretical Expectation and Experimental Implementation of In Situ Al-Doped CoS2 Nanowires on Dealloying-Derived Nanoporous Intermetallic Substrate as an Efficient Electrocatalyst for Boosting Hydrogen Production

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Pt-Based electrocatalysts with high atom utilization efficiency: from nanostructures to single atoms

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Tailored synthesis of Zn-N co-doped porous MoC nanosheets towards efficient hydrogen evolution

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An excellent OER electrocatalyst of cubic SrCoO3- prepared by a simple F-doping strategy

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Selective acid leaching: a simple way to engineer cobalt oxide nanostructures for the electrochemical oxygen evolution reaction

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Recent advances in transition metal-based electrocatalysts for alkaline hydrogen evolution

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The hydrogen evolution reaction: from material to interfacial descriptors

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Hydrogen production from the thermochemical conversion of biomass: issues and challenges

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Self-supported Al-doped cobalt phosphide nanosheets grown on three-dimensional Ni foam for highly efficient water reduction and oxidation

Xianwei Lv et al.

INORGANIC CHEMISTRY FRONTIERS (2019)

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Direct observation of active catalyst surface phases and the effect of dynamic self-optimization in NiFe-layered double hydroxides for alkaline water splitting

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ENERGY & ENVIRONMENTAL SCIENCE (2019)

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Recent progress made in the mechanism comprehension and design of electrocatalysts for alkaline water splitting

Congling Hu et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

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Crystalline Strontium Iridate Particle Catalysts for Enhanced Oxygen Evolution in Acid

Alaina L. Strickler et al.

ACS APPLIED ENERGY MATERIALS (2019)

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One-pot synthesized boron-doped RhFe alloy with enhanced catalytic performance for hydrogen evolution reaction

Lishang Zhang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

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Al-Doped Ni2P nanosheet array: a superior and durable electrocatalyst for alkaline hydrogen evolution

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CHEMICAL COMMUNICATIONS (2018)

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Towards High-Efficiency Hydrogen Production through insitu Formation of Well-Dispersed Rhodium Nanoclusters

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CHEMSUSCHEM (2018)

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Precision and correctness in the evaluation of electrocatalytic water splitting: revisiting activity parameters with a critical assessment

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ENERGY & ENVIRONMENTAL SCIENCE (2018)

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ACo(2)O(4) (A=Ni, Zn, Mn) nanostructure arrays grown on nickel foam as efficient electrocatalysts for oxygen evolution reaction

Yaqiong Gong et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2018)

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Shrinking the Hydrogen Overpotential of Cu by 1 V and Imparting Ultralow Charge Transfer Resistance for Enhanced H-2 Evolution

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Anchoring and space-confinement effects to form ultrafine Ru nanoclusters for efficient hydrogen generation

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Activation of the MoSe2 basal plane and Se-edge by B doping for enhanced hydrogen evolution

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Steel: The Resurrection of a Forgotten Water-Splitting Catalyst

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ACS ENERGY LETTERS (2018)

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Well-Defined Ru Nanoclusters Anchored on Carbon: Facile Synthesis and High Electrochemical Activity toward Alkaline Water Splitting

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Stabilizing the oxygen vacancies and promoting water-oxidation kinetics in cobalt oxides by lower valence-state doping

Jinsong Wang et al.

NANO ENERGY (2018)

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Energy Level Engineering of MoS2 by Transition-Metal Doping for Accelerating Hydrogen Evolution Reaction

Yi Shi et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Reactive Fe-Sites in Ni/Fe (Oxy)hydroxide Are Responsible for Exceptional Oxygen Electrocatalysis Activity

Michaela Burke Stevens et al.

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Al-Doped CoP nanoarray: a durable water-splitting electrocatalyst with superhigh activity

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NANOSCALE (2017)

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A Flexible Electrode Based on Al-Doped Nickel Hydroxide Wrapped around a Carbon Nanotube Forest for Efficient Oxygen Evolution

Francesco Malara et al.

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Iron hydroxyphosphate and Sn-incorporated iron hydroxyphosphate: efficient and stable electrocatalysts for oxygen evolution reaction

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Self-assembled two-dimensional copper oxide nanosheet bundles as an efficient oxygen evolution reaction (OER) electrocatalyst for water splitting applications

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Enhancing electrocatalytic total water splitting at few layer Pt-NiFe layered double hydroxide interfaces

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NANO ENERGY (2017)

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Evolution of layered double hydroxides (LDH) as high performance water oxidation electrocatalysts: A review with insights on structure, activity and mechanism

Sengeni Anantharaj et al.

MATERIALS TODAY ENERGY (2017)

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A Zn-doped Ni3S2 nanosheet array as a high-performance electrochemical water oxidation catalyst in alkaline solution

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CHEMICAL COMMUNICATIONS (2017)

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Integrated Energy Aerogel of N,S-rGO/WSe2/NiFe-LDH for Both Energy Conversion and Storage

Xiaowei Xu et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Molybdenum Carbide-Based Electrocatalysts for Hydrogen Evolution Reaction

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CHEMISTRY-A EUROPEAN JOURNAL (2017)

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Influence of Electrolyte Cations on Ni(Fe)OOH Catalyzed Oxygen Evolution Reaction

Jeremie Zaffran et al.

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Highly Active and Stable Iridium Pyrochlores for Oxygen Evolution Reaction

Dmitry Lebedev et al.

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Enhanced electrocatalytic hydrogen evolution performance of MoS2 ultrathin nanosheets via Sn doping

Cuicui Du et al.

APPLIED CATALYSIS A-GENERAL (2017)

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Electrocatalysis for the oxygen evolution reaction: recent development and future perspectives

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MOF-Derived Zn-Doped CoSe2 as an Efficient and Stable Free-Standing Catalyst for Oxygen Evolution Reaction

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ACS APPLIED MATERIALS & INTERFACES (2016)

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Water oxidation catalysis: an amorphous quaternary Ba-Sr-Co-Fe oxide as a promising electrocatalyst for the oxygen-evolution reaction

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Earth-Abundant Heterogeneous Water Oxidation Catalysts

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Recent advances in transition metal phosphide nanomaterials: synthesis and applications in hydrogen evolution reaction

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Transition metal based layered double hydroxides tailored for energy conversion and storage

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Unprotected and interconnected Ru-0 nano-chain networks: advantages of unprotected surfaces in catalysis and electrocatalysis

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Pt Nanoparticle Anchored Molecular Self-Assemblies of DNA: An Extremely Stable and Efficient HER Electrocatalyst with Ultralow Pt Content

Sengeni Anantharaj et al.

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Recent Trends and Perspectives in Electrochemical Water Splitting with an Emphasis on Sulfide, Selenide, and Phosphide Catalysts of Fe, Co, and Ni: A Review

Sengeni Anantharaj et al.

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Effects of Intentionally Incorporated Metal Cations on the Oxygen Evolution Electrocatalytic Activity of Nickel (Oxy)hydroxide in Alkaline Media

Lisa J. Enman et al.

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Design principles for hydrogen evolution reaction catalyst materials

Dusan Strmcnik et al.

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Contributions to activity enhancement via Fe incorporation in Ni-(oxy) hydroxide/borate catalysts for near-neutral pH oxygen evolution

Adam M. Smith et al.

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Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis

Wesley T. Hong et al.

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Design and Synthesis of Highly Active Al-Ni-P Foam Electrode for Hydrogen Evolution Reaction

Jose Luis Lado et al.

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A Review of Phosphide-Based Materials for Electrocatalytic Hydrogen Evolution

Peng Xiao et al.

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A mini review of NiFe-based materials as highly active oxygen evolution reaction electrocatalysts

Ming Gong et al.

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Amorphous Molybdenum Sulfides as Hydrogen Evolution Catalysts

Carlos G. Morales-Guio et al.

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Hierarchical ZnxCo3-xO4 Nanoarrays with High Activity for Electrocatalytic Oxygen Evolution

Xijun Liu et al.

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Nickel-Iron Oxyhydroxide Oxygen-Evolution Electrocatalysts: The Role of Intentional and Incidental Iron Incorporation

Lena Trotochaud et al.

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The intensification technologies to water electrolysis for hydrogen production - A review

Mingyong Wang et al.

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Developments and perspectives of oxide-based catalysts for the oxygen evolution reaction

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Tuning Nanoparticle Catalysis for the Oxygen Reduction Reaction

Shaojun Guo et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2013)

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Nanostructured metal chalcogenides: synthesis, modification, and applications in energy conversion and storage devices

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Commentary: The Materials Project: A materials genome approach to accelerating materials innovation

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Enhancing the Alkaline Hydrogen Evolution Reaction Activity through the Bifunctionality of Ni(OH)2/Metal Catalysts

N. Danilovic et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2012)

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Trends in activity for the water electrolyser reactions on 3d M(Ni,Co,Fe,Mn) hydr(oxy)oxide catalysts

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A review of polymer electrolyte membrane fuel cells: Technology, applications, and needs on fundamental research

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Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces

Isabela C. Man et al.

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On the applicability of empirical heat transfer models for hydrogen combustion engines

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Noble metal nanomaterials: Controllable synthesis and application in fuel cells and analytical sensors

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Enhancing Hydrogen Evolution Activity in Water Splitting by Tailoring Li+-Ni(OH)2-Pt Interfaces

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Recent progress in alkaline water electrolysis for hydrogen production and applications

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Hydrogen production through sorption-enhanced steam methane reforming and membrane technology: A review

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Exergy analysis of hydrogen production via steam methane reforming

Adam P. Simpson et al.

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Production of hydrogen for fuel cells by steam reforming of ethanol over supported noble metal catalysts

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