Recent advances of noble-metal-free bifunctional oxygen reduction and evolution electrocatalysts

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(13), P. 7745 - 7778

Published: Jan. 1, 2021

Bifunctional oxygen reduction and evolution constitute the core processes for sustainable energy storage. The advances on noble-metal-free bifunctional electrocatalysts are reviewed.

Language: Английский

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Recent Development and Future Perspectives of Amorphous Transition Metal‐Based Electrocatalysts for Oxygen Evolution Reaction

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(24)

Published: May 1, 2022

Abstract Oxygen evolution reaction (OER), as a relevant half for water splitting to address the energy crisis, has captured great deal of attention. However, this technology always been impeded by lack highly efficient and stable electrocatalyst. Amorphous materials, which possess long‐range disorder only short‐range order over few atoms, are often superior their crystalline counterparts in electrocatalysis owing more active sites, broader chemical composition range, structural flexibility. This review first introduces some assessment criteria OER then presents theoretical modeling mechanisms state‐of‐the‐art amorphous transition metal‐based electrocatalysts, involving oxides, hydroxides, sulfides, phosphides, borides, composites, well practical applications OER. Finally, recent development, existing challenges, future perspectives electrocatalysts discussed. paper offers valuable guidance designing applications.

Language: Английский

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Transition metal-based catalysts for electrochemical water splitting at high current density: current status and perspectives

Nanoscale, Journal Year: 2021, Volume and Issue: 13(30), P. 12788 - 12817

Published: Jan. 1, 2021

Current popular transition metal-based electrocatalysts developed for HER/OER in water splitting at high current density are critically reviewed and discussed.

Language: Английский

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Self-supported bimetallic phosphides with artificial heterointerfaces for enhanced electrochemical water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 304, P. 120914 - 120914

Published: Nov. 15, 2021

Language: Английский

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Halogen‐Doped Carbon Dots on Amorphous Cobalt Phosphide as Robust Electrocatalysts for Overall Water Splitting

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(14)

Published: Jan. 24, 2022

Abstract Designing a stable and efficient dual‐functional catalyst for the hydrogen evolution oxygen reactions (HER/OER) is of great significance to development production by water splitting. This work reports on novel halogen (X = F, Cl, Br)‐doped carbon dots modifying amorphous cobalt phosphide (X‐CDs/CoP), which can be tuned choice X‐CDs have urchin, Pinus bungeana , Albizia julibrissin type structures. The different characteristics various led formation mechanisms final As bifunctional catalyst, urchin‐shaped F‐CDs/CoP crystals achieve superior electrocatalytic performance, exhibiting excellent HER/OER activity sustained stability in an alkaline solution. For overall splitting, they provide current density 10 mA cm −2 require low cell voltage 1.48 V 1 M KOH. In addition, catalytic performance shows negligible degradation after 100 h, thus demonstrating long‐term cycling stability. Density functional theory calculations show that improved catalysts due coupling interface between CoP F‐CDs, optimizes hydrogen/oxygen adsorption energy accelerates splitting kinetics. provides guidance rational design transition metal electrocatalysts with outstanding performance.

Language: Английский

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Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(7)

Published: Dec. 9, 2022

Abstract Developing efficient and inexpensive electrocatalysts for the hydrogen evolution reaction (HER) is critical to commercial viability of electrochemical clean energy technologies. Transition metal phosphides (TMPs), with merits abundant reserves, unique structure, tunable composition, high electronic conductivity, are recognized as attractive HER catalytic materials. Nevertheless, electrocatalytic activity TMPs still limited by various thorough issues inherent performance bottlenecks. In this review, these carefully sorted, corresponding reasonable explanations solutions elucidated on basis origins TMPs. Subsequently, highly targeted multiscale strategies improve comprehensively presented. Additionally, scientific constructing high‐efficiency TMP‐based proposed. Finally, process, mechanism research, catalyst construction, their application expansion mentioned challenges future directions research field. Expectedly, review offers professional guidelines rational design practical catalysts.

Language: Английский

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“d‐Electron Complementation” Induced V‐Co Phosphide for Efficient Overall Water Splitting

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(38)

Published: Sept. 1, 2021

Abstract To generate “green hydrogen,” electrochemical water splitting is regarded as the most promising method, which requires highly efficient bifunctional electrocatalysts to accelerate hydrogen and oxygen evolution reactions (HER OER). Herein, a “d‐electron complementation” principle develop such candidates proposed. By taking advantage of filling characteristics 3d orbitals, vanadium‐cobalt phosphide (V‐CoP) synthesized. According X‐ray absorption fine structure photoelectron spectroscopy investigation, V can disorder coordination environment Co, leading increased/decreased charge density in Co(P)/Co(O). As result, V‐CoP shows impressive activity, only needs overpotentials 46 267 mV deliver 10 mA cm −2 for HER OER, respectively. Density functional theory calculations reveal that accelerated H 2 O dissociation process on VO x /CoO /CoP surface conversion kinetics V‐neighboring CoCo bridge site result promoted activity. Furthermore, up‐shifted d‐band center V‐CoOOH endows Co with lowered energy barrier OER. This work serves proof‐of‐concept application principle, be generalized guideline design novel catalysts.

Language: Английский

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Recent advances in rare-earth-based materials for electrocatalysis

Chem Catalysis, Journal Year: 2022, Volume and Issue: 2(5), P. 967 - 1008

Published: March 3, 2022

Language: Английский

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Interface engineering of S-doped Co2P@Ni2P core–shell heterostructures for efficient and energy-saving water splitting

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 439, P. 135743 - 135743

Published: March 11, 2022

Language: Английский

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Facet Engineering of Advanced Electrocatalysts Toward Hydrogen/Oxygen Evolution Reactions

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Feb. 16, 2023

The electrocatalytic water splitting technology can generate high-purity hydrogen without emitting carbon dioxide, which is in favor of relieving environmental pollution and energy crisis achieving neutrality. Electrocatalysts effectively reduce the reaction barrier increase efficiency. Facet engineering considered as a promising strategy controlling ratio desired crystal planes on surface. Owing to anisotropy, with different orientations usually feature facet-dependent physical chemical properties, leading differences adsorption energies oxygen or intermediates, thus exhibit varied activity toward evolution (HER) (OER). In this review, brief introduction basic concepts, fundamental understanding mechanisms well key evaluating parameters for both HER OER are provided. formation facets comprehensively overviewed aiming give scientific theory guides realize dominant planes. Subsequently, three strategies selective capping agent, etching coordination modulation tune summarized. Then, we present an overview significant contributions facet-engineered catalysts HER, OER, overall splitting. particular, highlight that density functional calculations play indispensable role unveiling structure–activity correlation between plane catalytic activity. Finally, remaining challenges provided future prospects designing advanced electrocatalysts discussed.

Language: Английский

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