Regulative electronic redistribution of CoTe2/CoP heterointerfaces for accelerating water splitting

Article Chemistry, Physical

Ni-nanoclusters hybridized 1T-Mn-VTe2 mesoporous nanosheets for ultra-low potential water splitting

Uday Narayan Pan et al.

Summary: The study developed NiNCs-1T-Mn-VTe2 NS, a catalyst with excellent performance in water-splitting at ultra-low potential, indicating that sufficient Mn doping and intercalation contribute to enhancing ECWS efficiency.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Multidisciplinary

Hydrogen Spillover-Bridged Volmer/Tafel Processes EnablingAmpere-Level Current Density Alkaline Hydrogen EvolutionReaction under Low Overpotential

Huai Qin Fu et al.

Summary: This study presents a new approach for water-alkaline electrolysis hydrogen production, which enables the operation at ampere-level current densities under low overpotentials with the use of hydrogen spillover-bridged water dissociation/hydrogen formation processes and synergistically hybridized catalysts. Mechanistic insights critical to enable ampere-level current density operation are revealed through experimental and theoretical studies.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Surface self-reconstruction of telluride induced by in-situ cathodic electrochemical activation for enhanced water oxidation performance

Peng Guo et al.

Summary: In this study, a unique electrochemical surface engineering method was used to develop telluride-based catalysts. By adjusting the D-band center of the active site, the catalyst showed enhanced adsorption of intermediates and optimized the pathway for the oxygen evolution reaction. The catalyst achieved a stable current density with an ultralow overpotential in 1 M KOH.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Multidisciplinary

Tuning the Interface of Co1-XS/Co(OH)F by Atomic Replacement Strategy toward High-Performance Electrocatalytic Oxygen Evolution

Qian Lin et al.

Summary: Needled-like heterostructure Co1-xS/Co(OH)F catalysts with excellent OER catalytic performance were successfully fabricated. The advantages of this catalyst design include increased active sites, optimized adsorption and desorption energy in the OER process, and the enhanced local electric field effect of the needle-like structure.

ACS NANO (2022)

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Article Chemistry, Multidisciplinary

Deciphering the Space Charge Effect of the p-n Junction between Copper Sulfides and Molybdenum Selenides for Efficient Water Electrolysis in a Wide pH Range

Mingzheng Gu et al.

Summary: Researchers designed and synthesized a core-shell structure material CuS@MoSe2, which greatly improves electron transfer and conductivity through the space charge effect and has abundant active interfaces. The material exhibits good electrocatalytic performance in water oxidation.

ACS NANO (2022)

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Article Multidisciplinary Sciences

Reversible hydrogen spillover in Ru-WO3-x enhances hydrogen evolution activity in neutral pH water splitting

Jiadong Chen et al.

Summary: In this study, the integration of Ru nanoparticles on oxygen-deficient WO3-x was found to greatly enhance the activity of hydrogen evolution reaction. Oxygen-deficient WO3-x has a large capacity for storing protons, which increases the hydrogen coverage on the surface of Ru nanoparticles.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Boosting the Stability of Oxygen Vacancies in α-Co(OH)2 Nanosheets with Coordination Polyhedrons as Rivets for High-Performance Alkaline Hydrogen Evolution Electrocatalyst

Li-Wen Jiang et al.

Summary: This study demonstrates an effective strategy to stabilize alpha-Co(OH)(2) under harsh alkaline electrochemical conditions by using MoO42- ions to stabilize oxygen vacancies and improve the stability and efficiency of hydrogen evolution reaction (HER).

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

Mott-Schottky heterostructure induce the interfacial electron redistribution of MoS2 for boosting pH-universal hydrogen evolution with Pt-like activity

Zemin Sun et al.

Summary: This study successfully optimized the electronic structure of sulfur sites and enhanced proton adsorption properties under various pH conditions by constructing a pH-universal adaptability Mo-MoS2 MSH structure.

NANO ENERGY (2022)

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Article Chemistry, Physical

Synergistic effect of dual active sites over Ru/a-MoC for accelerating alkaline hydrogen evolution reaction

Xueliang Fan et al.

Summary: This paper presents the development of a Ru/alpha-MoC catalyst with dual active sites, demonstrating excellent alkaline HER activity and superior performance through multiple structural characterizations.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Electrochemistry

Magic hybrid structure as multifunctional electrocatalyst surpassing benchmark Pt/C enables practical hydrazine fuel cell integrated with energy-saving H2 production

Ziyun Li et al.

Summary: This study presents a rational design of a hybrid catalyst structure with low Pt loading, which demonstrates superior multifunctional catalytic activity for various electrochemical reactions in alkaline conditions. Theoretical calculations reveal that the metal-carbon hybrid plays a crucial role in modulating kinetic behavior and achieving the energetic requirements for multiple electrocatalysis. The catalyst shows inspiring practical utility for sustainable H2 production.

ESCIENCE (2022)

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Article Electrochemistry

Phosphated IrMo bimetallic cluster for efficient hydrogen evolution reaction

Xu Guo et al.

Summary: In this study, phosphated IrMo bimetallic clusters supported by macroporous nitrogen-doped carbon were developed as highly efficient alkaline HER catalysts. By tuning the electronic structure and utilizing atom synergies, these catalysts improved the adsorption and desorption abilities of the reactant and product, resulting in low overpotential and high mass activity even with a small amount of Ir. The multilevel design strategy demonstrated in this study effectively improves noble metal atom efficiency.

ESCIENCE (2022)

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Article Chemistry, Multidisciplinary

Stable and Highly Efficient Hydrogen Evolution from Seawater Enabled by an Unsaturated Nickel Surface Nitride

Huanyu Jin et al.

Summary: A novel unsaturated nickel surface nitride catalyst has been developed for efficient and stable hydrogen electrocatalytic production in alkaline seawater. The catalyst shows lower overpotential compared to traditional metal nitrides and can effectively generate hydronium ions in high-pH electrolyte.

ADVANCED MATERIALS (2021)

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Article Chemistry, Physical

In-situ construction of lattice-matching NiP2/NiSe2 heterointerfaces with electron redistribution for boosting overall water splitting

Lei Yang et al.

Summary: Constructing heterostructure of NiP2/NiSe2 electrocatalysts with optimized interface and electron redistribution can significantly enhance catalytic performance towards water splitting, showing promising potential for future development of efficient and durable catalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

All-pH Stable Sandwich-Structured MoO2/MoS2/C Hollow Nanoreactors for Enhanced Electrochemical Hydrogen Evolution

Feilong Gong et al.

Summary: A novel design of MoO2/MoS2/C hollow nanoreactors with high electrocatalytic efficiency for hydrogen evolution over all pH values is reported. The introduction of sulfur vacancies on MoO2 substrates and the design of defective carbon shells enhance the stability of the electrocatalysts in acidic and alkaline media, showing potential for durable hydrogen evolution. The vacancy engineering can regulate the band structures, electron density differences, total density of states, and adsorption-dissociation ability of H* and H2O over the entire pH range, providing insights for the rational development of practical pH-universal electrocatalysts.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Physical

Modulation of Volmer step for efficient alkaline water splitting implemented by titanium oxide promoting surface reconstruction of cobalt carbonate hydroxide

Ling Yuan et al.

Summary: The in-situ surface reconstruction on a composite between cobalt carbonate hydroxide and titanium oxide can facilitate the Volmer step, resulting in a highly efficient electrocatalyst for alkaline hydrogen evolution reaction (HER). Experimental characterization and density functional theory calculation reveal that the activated composite exhibits excellent electrocatalytic performance in alkaline media.

NANO ENERGY (2021)

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Article Electrochemistry

Ni2P/NiMoP heterostructure as a bifunctional electrocatalyst for energy-saving hydrogen production

Tongzhou Wang et al.

Summary: An effective approach is introduced in this study to replace the anodic oxygen evolution reaction with a urea oxidation reaction, significantly decreasing the cell voltage for hydrogen production. The Ni2P/NiMoP catalyst shows impressive activity for both hydrogen evolution and oxygen evolution during hydrogen production. The introduction of urea results in a significant reduction in oxidation voltage, and the two-electrode electrolyzer with Ni2P/NiMoP catalyst exhibits excellent long-term durability.

ESCIENCE (2021)

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Review Chemistry, Multidisciplinary

Atomic heterointerface engineering overcomes the activity limitation of electrocatalysts and promises highly-efficient alkaline water splitting

Qiucheng Xu et al.

Summary: Alkaline water splitting for hydrogen production is a low-cost and scalable method that requires highly efficient electrocatalysts to decrease the barriers of hydrogen and oxygen evolution reactions. Atomic heterointerface engineering is a promising strategy to overcome the intrinsic activity limitation of electrocatalysts.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary