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Article
Materials Science, Multidisciplinary
Jiawei Zhu et al.
Summary: The rational design of epitaxial heterostructures based on the growth of compatible phases with lattice similarity can enhance electrocatalytic activity. The charge transfer and reinforced electron conduction at the epitaxial heterointerface between Ru clusters and Ni3N substrate are studied through theoretical simulations, leading to optimized adsorption behaviors and reduced activation energy barriers. The defect-rich nanosheets with the epitaxially grown cRu-Ni3N heterointerface show remarkable bifunctional catalytic activity in electrocatalytic OER and HER, as well as in alkaline freshwater and seawater splitting.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Dan Li et al.
Summary: The synchronous dual-phase synthesis of crystalline Ag and amorphous NiCoMo oxides on nickel foam resulted in a highly efficient and stable OER electrocatalyst. The dense c-a interfacial sites effectively modulate the electronic structure of the interfacial sites and promote phase transition, enhancing catalytic performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Yuting Luo et al.
Summary: The electrochemical water splitting technology is crucial for achieving global carbon neutrality. High-performance electrocatalysts that can operate at high current densities are essential for the industrial implementation of this technology. Recent advancements in this field have led to the development of various catalysts designed specifically for high current densities (> 200 mA cm(-2)). This article discusses these recent advances and summarizes the key factors that influence the catalytic performance in high current density electrocatalysis, including catalyst dimensionality, surface chemistry, electron transport path, morphology, and catalyst-electrolyte interaction. It highlights the importance of a multiscale design strategy that considers these factors comprehensively for developing high current density electrocatalysts. The article also provides insights into the future directions of this emerging field.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shijie Shen et al.
Summary: This study achieves deep optimization of catalytic activity by constructing a crystalline-amorphous CoSe2/CoP heterojunction, optimizing the valence state and H adsorption of Co, and lowering the kinetic barrier of the hydrogen evolution reaction. The heterojunction shows competitive properties in acidic, neutral, and basic media.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
E. Vijayakuma et al.
Summary: The CoP-NC@NFP catalyst, derived from MOF with multiple active sites, exhibits excellent charge-transfer kinetics and electrocatalytic performance in water splitting, comparable to precious metal catalysts in alkaline electrolytes, with outstanding electrochemical durability. Furthermore, zinc-air batteries assembled with CoP-NC@NFP as the air-cathode demonstrate high power density and prolonged operational stability, suggesting potential for efficient multifunctional catalysts free of noble metals for clean energy production and storage.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Yao Yang et al.
Summary: This article provides a comprehensive review of the fundamentals of electrocatalysis in alkaline media and its applications in alkaline-based energy technologies. Nonprecious anion exchange membrane fuel cells offer a promising alternative to proton exchange membrane fuel cells for sluggish oxygen reduction reaction. The understanding of proton-coupled electron transfer and active sites has contributed to the development of high-performance and durable alkaline fuel cells.
Article
Chemistry, Multidisciplinary
Rui Qin et al.
Summary: This research successfully enhanced the electrochemical activity of oxygen and hydrogen in overall water splitting by designing and constructing ruthenium modified nickel diselenide nanosheet arrays. Experimental results show that the electrode exhibits excellent oxygen and hydrogen evolution performance in alkaline solution, with the active center during the OER process being captured.
Article
Chemistry, Multidisciplinary
Qianqian Li et al.
Summary: By utilizing a Ru doping and air-plasma treatment strategy, the improved HER performance of CoNi-LDH nanotube arrays was achieved, exhibiting superior overpotential and durability. This study demonstrates an effective avenue for developing high-performance HER electrocatalysts through intrinsic and extrinsic synergistic effects.
Article
Chemistry, Physical
Ding Chen et al.
Summary: This study unveils the catalytic activity trend of platinum-group metal silicides, with IrSi identified as the most efficient catalyst for the hydrogen evolution reaction (HER). Additionally, a molten salt-assisted synthesis strategy is successfully employed to synthesize various PGM silicides, validating its generality. Electrochemical evaluation demonstrates that IrSi exhibits excellent HER catalysis activity, surpassing commercial platinum catalysts.
Article
Chemistry, Physical
Haoqiang Song et al.
Summary: This study reports on a novel carbon dots-modified cobalt phosphide catalyst with excellent bifunctional performance for hydrogen production by water splitting. The urchin-shaped F-CDs/CoP crystals show superior HER/OER activity and long-term stability in an alkaline solution, providing important guidance for the development of water splitting for hydrogen production.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Pengyan Wang et al.
Summary: The swapping of catalytic active sites from cationic Ni to anionic S in a hierarchical structure has shown to significantly enhance the intrinsic activity of the hydrogen evolution reaction. The new catalyst exhibits superior performance with a doubling in the intrinsic activity and a twofold increased turnover frequency compared to its pure NiS2 counterpart. Additionally, the NiS2/NiS2-NiS electrode also demonstrates outstanding activity in the oxygen evolution reaction and overall water splitting.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yawei Feng et al.
Summary: The proposed self-powered electrochemical system converts blue energy from ocean waves into green energy via hydrogen fuel through triboelectric nanogenerator (TENG) devices and an electrolyzer. After optimization, the system can achieve high-efficiency hydrogen generation, demonstrating its potential towards carbon neutrality.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuan Chang et al.
Summary: The research shows that Se vacancies in PtSe2 can significantly enhance the efficiency of the hydrogen evolution reaction and also exhibit good catalytic properties for the oxygen evolution reaction. Defective PtSe2 produced via a chemical vapor deposition process is more efficient than Pt foils, indicating its potential for widespread applications.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Lingyun Guo et al.
Summary: This study successfully prepared a novel bifunctional electrode material for electrolytic water splitting, with low cost and high activity, which can achieve efficient water electrolysis in alkaline media. The electrode exhibited excellent stability and catalytic performance, providing a new design concept for efficient water splitting reactions.
Article
Chemistry, Multidisciplinary
Xu Luo et al.
Summary: This study proposes a novel self-sacrificing template strategy to realize the in situ growth of NiFe-based Prussian blue analogs (NiFe PBA) on Ni3S2. The resulting Ni3S2/Fe-NiPx composite exhibits excellent OER catalytic activity in alkaline seawater, outperforming most reported catalysts. Experimental and theoretical results confirm the significance of the Ni3S2/Fe-NiPx reconstruction system and the presence of Fe-Ni2P/FeOOH in OER activity.
Review
Electrochemistry
Huawei Bai et al.
Summary: Transition metal phosphides (TMPs) have attracted attention in electrocatalytic hydrogen production due to their multiple active sites and adjustable structures. However, the catalytic performance of pure TMPs in the hydrogen evolution reaction (HER) is not ideal. Atom doping engineering has the potential to enhance the kinetics of catalytic reactions by adjusting the electronic structure and Gibbs free energy. This review examines previous work on atom doping engineering, including the activity origin of doped TMPs, doping materials, methods, and the resulting HER properties.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Ding Chen et al.
Summary: Designing synergistic heterogeneous catalytic interfaces is crucial for developing highly efficient pH-universal electrocatalysts. By employing a molten salt-assisted catalytic synthesis scheme, a series of Ru-Ru2P heterostructure catalysts were successfully synthesized. These catalysts exhibit Pt-like hydrogen evolution reaction (HER) performance in different pH media and also show potential in seawater electrolysis for hydrogen production.
Article
Chemistry, Multidisciplinary
Libo Wu et al.
Summary: The study successfully synthesized a heterogeneous Ni2P-Fe2P microsheet electrocatalyst with superior catalytic activity and corrosion resistance, suitable for water and seawater electrolysis, demonstrating great potential. The catalyst has abundant active sites and a superior transfer coefficient, exhibiting performance even better than the currently reported best bifunctional catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Weidong Li et al.
Summary: The study investigated the effect of CoRu nanoalloys supported on carbon quantum dots on hydrogen generation, revealing excellent catalytic activity and stability. Additionally, theoretical calculations elucidated the optimal alloy electronic structure contributing to the remarkable catalytic performance of CoRu0.5/CQDs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Haoqiang Song et al.
Summary: This study introduces a composite material design with CoP nanoparticles doped with Ru single-atom sites supported on carbon dots (CDs) single-layer nanosheets, forming Ru1CoP/CDs. The catalyst shows high efficiency for the hydrogen evolution reaction over a wide pH range and excellent stability and activity. Through density functional theory calculations, it was revealed that the substituted Ru single atoms enhance catalytic performance by lowering the proton-coupled electron transfer energy barrier and promoting H-H bond formation. This research presents a new approach for developing carbon-based hybridization materials with integrated electrocatalytic performance for water splitting.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yuyan Song et al.
Summary: This paper presents the fabrication of Ru and Ni dual-metal doped CoP porous nanofibers as high-efficiency bifunctional electrocatalysts. Dual-metal doping can efficiently modulate the electronic structure, leading to enhanced activity and stability. The Ru, Ni-CoP porous nanofibers show excellent electrocatalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Hongqiang Xin et al.
Summary: This study demonstrates the excellent HER performance of P-defected Rh2P nanoparticles in both acidic and alkaline electrolytes, with particularly outstanding performance in alkaline conditions surpassing the Pt/C benchmark. First-principle calculations reveal that P-defected Rh2P nanoparticles have the closest H adsorption sites distance and lowest activation barrier, promoting subsequent H2 release.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Hongwei Gao et al.
Summary: The development of 3D self-supporting electrocatalysts plays a crucial role in the practical application of water electrolysis. This study successfully prepared a self-supporting transition metal phosphate catalyst with outstanding catalytic activity and durability in electrolysis of water.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Cheng-Fei Li et al.
Summary: This study demonstrates the efficient design of bifunctional catalysts using doping and vacancy double control strategy for the significant enhancement of hydrogen and oxygen evolution reactions. The Fe-doped Ni5P4/Fe-doped Ni(OH)2 hybrid nanosheets with rich oxygen vacancies show excellent catalytic performances with low overpotentials and cell voltage for water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Green & Sustainable Science & Technology
D. D. T. Ferraren-De Cagalitan et al.
Summary: Hydrogen fuel cells offer a clean and sustainable energy source, but must meet specific criteria. This paper examines the methods, challenges, and potential market for biohydrogen, highlighting its potential as an alternative source for hydrogen while emphasizing the need for further research in certain areas to make the hydrogen economy a viable reality.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Qiming Chen et al.
Summary: This study reports an interesting atom migration phenomenon induced by Kirkendall effect for the preparation of dual-metal TMPs as highly active non-precious metal OER electrocatalysts. The compositions and distributions of different metal phosphide phases on the surfaces of the electrocatalysts can be easily controlled by alloy precursors and phosphorization process, leading to optimized electrocatalytic performance.
Article
Chemistry, Physical
Papri Mondal et al.
Summary: This study successfully improved the catalytic performance of electrocatalysts by synthesizing silver permanganate nanoparticles doped with palladium, achieving extremely low overpotentials and small Tafel slopes, demonstrating excellent bifunctional activity. The optimal catalytic effect was observed at a temperature of 260 degrees Celsius.
Article
Chemistry, Physical
Chun-Lung Huang et al.
Summary: Twin boundaries significantly enhance the performance of copper-based catalysts, reducing overpotentials for electrolytic water splitting and improving stability. The formation of active (CuO2-)-O-III at low overpotentials enhances the efficiency of the oxygen evolution reaction, while geometric and electronic effects induced by the twin boundaries lead to a remarkable improvement in hydrogen evolution reaction activity.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Lei Wang et al.
Summary: This study successfully synthesized phase-controlled iron/nickel phosphides nanocrystals coated with porous P-doped carbon and anchored on P-doped graphene, optimizing their surface/interface electronic structures and achieving the highest electrocatalytic activity for hydrogen and oxygen evolution in alkaline media. These pure-phase phosphides nanohybrids showed exceptional performance as bifunctional catalysts for water splitting, surpassing mixed phase and monometallic counterparts and previously reported catalysts based on Pt/C or IrO2.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Physical
Changqing Li et al.
Summary: Producing hydrogen using anion exchange membrane water electrolysis is a promising approach to address the energy crisis, but further understanding and improvement of the technology is needed, including increasing power efficiency and reducing costs.
Article
Chemistry, Multidisciplinary
Jin Wang et al.
Summary: The Mo-NiPx/NiSy electrode exhibits low overpotentials and high activity in both hydrogen evolution and oxygen evolution reactions, demonstrating remarkable full water splitting performance comparable to commercial electrolysis.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Lishan Peng et al.
Summary: This study reveals the degradation mechanism of NiFe-LDH catalysts during alkaline OER and demonstrates that introducing cation vacancies can enhance both activity and stability. The introduction of cation vacancies reduces metal dissolution and surface phase formation, improving the long-term OER stability of NiFe-LDH.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Lijie Zhang et al.
Summary: The study developed sodium-decorated amorphous/crystalline RuO2 with rich oxygen vacancies as a pH-universal OER electrocatalyst, showing remarkable acid resistance and high catalytic stability. The introduction of Na dopant and oxygen vacancy in RuO2 was found to lower the energy barrier for OER by weakening the adsorption strength of the OER intermediates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Hui Su et al.
Summary: Novel bimetallic sulfide electrocatalysts with excellent HER and OER activity have been synthesized, outperforming most reported bifunctional metal sulfides. This is attributed to the introduction of Cu cation promoting the formation of high-valent Ni/Co sites, which enhances the intrinsic catalytic activity by modulating the d-band center of Co and reducing the adsorption energy of intermediates.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Ding Chen et al.
Summary: Pt-group metal (PGM) electrocatalysts have unique electronic structures and comprehensive properties that are crucial in electrocatalysis. Anion engineering can create a series of PGM compounds with promising prospects for improving electrocatalytic performance. By regulating the electronic structure, the anion-modulated strategy offers flexibility in constructing electrocatalysts with superior activity and stability for future green energy conversion systems.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Green & Sustainable Science & Technology
Meiling Yue et al.
Summary: This paper reviews the current progress and outlook of hydrogen technologies and their application in power systems, highlighting the importance of hydrogen in clean energy and pointing out the technical and economic challenges that need to be addressed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Dulan Wu et al.
Summary: This study introduces an ultralow Ru incorporated amorphous cobalt-based oxide catalyst for efficient and stable water electrolysis at high current densities, demonstrating its potential for industrial applications and exploring high-current-density water electrocatalysis by altering the catalyst crystallinity.
Article
Multidisciplinary Sciences
Xiaoyu Yan et al.
Summary: Electrochemical water splitting is a sustainable method for generating hydrogen, but traditional and emerging electrolyzers face efficiency and cost challenges. The membrane-free flow electrolyzer designed by the authors allows for efficient water splitting at high current densities. By combining the advantages of different electrolyzer concepts, the study paves the way for sustainable hydrogen generation.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Kai Ling Zhou et al.
Summary: Single-atom platinum immobilized NiO/Ni heterostructure acts as a highly efficient alkaline hydrogen evolution catalyst by enabling tunable binding abilities and enhancing water dissociation energy. Constructing hierarchical three-dimensional morphology further enhances the catalytic performance.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Shamraiz Hussain Talib et al.
Summary: This study investigates the electrocatalytic performance of single-atom catalysts supported on a phosphomolybdic acid (PMA) cluster for hydrogen evolution, oxygen evolution, and oxygen reduction reactions. The results show that Pt-1/PMA, Ru-1/PMA, V-1/PMA, and Ti-1/PMA exhibit decent catalytic performance for the HER, while Co-1/PMA and Pt-1/PMA are active and selective catalysts for the OER. Fe-1/PMA SAC is a promising electrocatalyst for the ORR.
Article
Chemistry, Physical
Dongmei Liu et al.
Summary: An efficient in situ etching strategy is employed to transform part of the pristine NiFe-MOF into active NiFe(OH)(x) and simultaneously induce the exposure of abundant defective areas, which not only facilitates the electron transfer efficiency for the oxygen evolution reaction (OER), but also enables the accessibility to further anchor Ru, leading to enhanced OER activity.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
M. A. Khan et al.
Summary: As the price of renewable electricity drops, water electrolysis for hydrogen production is being considered for decarbonization. However, there is currently limited economic and environmental incentive for further research and development in direct seawater electrolysis technology.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Physical
Lin Tian et al.
Summary: Electrochemical water splitting holds promise for producing high-density and green hydrogen, but the slow H2O dissociation process hinders industrial scale applications due to low H2O adsorption on catalyst surfaces. Efforts in exploring efficient approaches to fabricate electrocatalysts with appropriate H2O adsorption include defect engineering, interface engineering, and morphology design. Noble metal doping, particularly with metals like Ru, Rh, and Ir, plays a crucial role in optimizing the adsorption of reaction intermediates on catalyst surfaces, and has attracted significant research interest. This review highlights recent examples and mechanisms of noble metal doping in boosting water splitting electrocatalysis, along with challenges and future outlooks for practical applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Fuzhen Zhao et al.
Summary: A novel and simple strategy was developed to synthesize amorphous/amorphous Ni-P/Ni(OH)2 heterostructure nanotubes, which exhibit high catalytic activity and stability as HER catalyst, with significantly decreased energy barrier for hydrogen generation.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Juan Jian et al.
Summary: The study introduces K2Fe4O7 nanocrystals grown on a nickel foam as an electrocatalyst for hydrogen and oxygen evolution reactions, demonstrating excellent stability and high current densities. The nano-KFO material shows promising potential for large-scale hydrogen production due to its efficient electrocatalytic performance in water splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Physical
Yang Li et al.
ADVANCED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Hongbin Xu et al.
ADVANCED ENERGY MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Pengxia Ji et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
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Qijun Che et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
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Meijiao Qu et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Review
Chemistry, Multidisciplinary
Haojie Zhang et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Xiao Ren et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Ming Fang et al.
ADVANCED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Ding Chen et al.
ADVANCED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Jing Hu et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Zhen Qiu et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Bowei Zhang et al.
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Multidisciplinary
Qijun Che et al.
Article
Chemistry, Physical
Bao Zhang et al.