Facet Engineering of Advanced Electrocatalysts Toward Hydrogen/Oxygen Evolution Reactions DOI Creative Commons
Changshui Wang, Qian Zhang, Bing Yan

et al.

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

Non-iridium-based electrocatalyst for durable acidic oxygen evolution reaction in proton exchange membrane water electrolysis DOI
Zhenyu Wu, Feng-Yang Chen, Boyang Li

et al.

Nature Materials, Journal Year: 2022, Volume and Issue: 22(1), P. 100 - 108

Published: Oct. 20, 2022

Language: Английский

Citations

531
Status and perspectives of key materials for PEM electrolyzer DOI Creative Commons
Kexin Zhang, Xiao Liang, Lina Wang

et al.

Deleted Journal, Journal Year: 2022, Volume and Issue: 1, P. e9120032 - e9120032

Published: Sept. 8, 2022

Proton exchange membrane water electrolyzer (PEMWE) represents a promising technology for the sustainable production of hydrogen, which is capable efficiently coupling to intermittent electricity from renewable energy sources (e.g., solar and wind). The with compact stack structure has many notable advantages, including large current density, high hydrogen purity, great conversion efficiency. However, use expensive electrocatalysts construction materials leads costs limited application. In this review, recent advances made in key PEMWE are summarized. First, we present brief overview about basic principles, thermodynamics, reaction kinetics PEMWE. We then describe cell components their respective functions, as well discuss research status such membrane, electrocatalysts, electrode assemblies, gas diffusion layer, bipolar plate. also attempt clarify degradation mechanisms under real operating environment, catalyst degradation, plate layer degradation. finally propose several future directions developing through devoting more efforts materials.

Language: Английский

Citations

323
Electrochemical Water Splitting: Bridging the Gaps Between Fundamental Research and Industrial Applications DOI Open Access
Hainan Sun, Xiaomin Xu, Hyunseung Kim

et al.

Energy & environment materials, Journal Year: 2022, Volume and Issue: 6(5)

Published: May 28, 2022

Electrochemical water splitting represents one of the most promising technologies to produce green hydrogen, which can help realize goal achieving carbon neutrality. While substantial efforts on a laboratory scale have been made for understanding fundamental catalysis and developing high‐performance electrocatalysts two half‐reactions involved in electrocatalysis, much less attention has paid doing relevant research larger scale. For example, few such researches done an industrial Herein, we review very recent endeavors bridge gaps between applications electrolysis. We begin by introducing fundamentals electrochemical then present comparisons testing protocol, figure merit, catalyst interest, manufacturing cost industry‐based water‐electrolysis research. Special is tracking surface reconstruction process identifying real catalytic species under different conditions, highlight significant distinctions corresponding mechanisms. Advances designs industry‐relevant electrolysis are also summarized, reveal progress moving practical forward accelerating synergies material science engineering. Perspectives challenges electrocatalyst design strategies proposed finally further lab‐scale large‐scale electrocatalysis applications.

Language: Английский

Citations

320
Efficient Alkaline Water/Seawater Hydrogen Evolution by a Nanorod‐Nanoparticle‐Structured Ni‐MoN Catalyst with Fast Water‐Dissociation Kinetics DOI
Libo Wu, Fanghao Zhang, Shaowei Song

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(21)

Published: April 1, 2022

Achieving efficient and durable nonprecious hydrogen evolution reaction (HER) catalysts for scaling up alkaline water/seawater electrolysis is desirable but remains a significant challenge. Here, heterogeneous Ni-MoN catalyst consisting of Ni MoN nanoparticles on amorphous nanorods that can sustain large-current-density HER with outstanding performance demonstrated. The hierarchical nanorod-nanoparticle structure, along large surface area multidimensional boundaries/defects endows the abundant active sites. hydrophilic helps to achieve accelerated gas-release capabilities effective in preventing degradation during water electrolysis. Theoretical calculations further prove combination effectively modulates electron redistribution at their interface promotes sluggish water-dissociation kinetics Mo Consequently, this requires low overpotentials 61 136 mV drive current densities 100 1000 mA cm-2 , respectively, 1 m KOH stable operation 200 h constant density or 500 . This good also works well seawater electrolyte shows toward overall ultralow cell voltages.

Language: Английский

Citations

278
Surface Design Strategy of Catalysts for Water Electrolysis DOI

Binghui Zhou,

Ruijie Gao, Ji‐Jun Zou

et al.

Small, Journal Year: 2022, Volume and Issue: 18(27)

Published: June 6, 2022

Abstract Hydrogen, a new energy carrier that can replace traditional fossil fuels, is seen as one of the most promising clean sources. The use renewable electricity to drive hydrogen production has very broad prospects for addressing and environmental problems. Therefore, many researchers favor electrolytic water due its green low‐cost advantages. reaction comprises oxygen evolution (OER) (HER). Understanding OER HER mechanisms in acidic alkaline processes contributes further studying design surface regulation catalysts. catalysts are mainly reviewed defects, doping, alloying, reconstruction, crystal structure, heterostructures. Besides, recent overall splitting also reviewed. Finally, this review paves way rational synthesis materials highly efficient electrocatalysis.

Language: Английский

Citations

272
Water splitting performance of metal and non-metal-doped transition metal oxide electrocatalysts DOI

Ahmed H. Al-Naggar,

Nanasaheb M. Shinde,

Jeom-Soo Kim

et al.

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 474, P. 214864 - 214864

Published: Oct. 12, 2022

Language: Английский

Citations

252
Eliminating over-oxidation of ruthenium oxides by niobium for highly stable electrocatalytic oxygen evolution in acidic media DOI Creative Commons
Hai Liu, Zhuang Zhang,

Jinjie Fang

et al.

Joule, Journal Year: 2023, Volume and Issue: 7(3), P. 558 - 573

Published: March 1, 2023

Language: Английский

Citations

250
Recent advances in proton exchange membrane water electrolysis DOI
Ruiting Liu, Zheng‐Long Xu, Fumin Li

et al.

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(16), P. 5652 - 5683

Published: Jan. 1, 2023

This review scrutinizes recent progress in PEMWE system including mechanisms, the correlation among structure-composition–performance, manufacturing, design and operation protocols. The challenges perspectives for applications are proposed.

Language: Английский

Citations

244
Unraveling oxygen vacancy site mechanism of Rh-doped RuO2 catalyst for long-lasting acidic water oxidation DOI Creative Commons
Yi Wang, Rong Yang, Yajun Ding

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: March 14, 2023

Exploring durable electrocatalysts with high activity for oxygen evolution reaction (OER) in acidic media is of paramount importance H2 production via polymer electrolyte membrane electrolyzers, yet it remains urgently challenging. Herein, we report a synergistic strategy Rh doping and surface vacancies to precisely regulate unconventional OER path the Ru-O-Rh active sites Rh-RuO2, simultaneously boosting intrinsic stability. The stabilized low-valent catalyst exhibits remarkable performance, an overpotential 161 mV at 10 mA cm-2 retention 99.2% exceeding 700 h 50 cm-2. Quasi situ/operando characterizations demonstrate recurrence reversible species under working potentials enhanced durability. It theoretically revealed that Rh-RuO2 passes through more optimal lattice mediated mechanism-oxygen vacancy site mechanism induced by interaction defects rate-determining step *O formation, breaking barrier limitation (*OOH) traditional adsorption mechanism.

Language: Английский

Citations

237
Switching the Oxygen Evolution Mechanism on Atomically Dispersed Ru for Enhanced Acidic Reaction Kinetics DOI
Yixin Hao, Sung‐Fu Hung, Wen‐Jing Zeng

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(43), P. 23659 - 23669

Published: Oct. 23, 2023

Designing stable single-atom electrocatalysts with lower energy barriers is urgent for the acidic oxygen evolution reaction. In particular, atomic catalysts are highly dependent on kinetically sluggish acid-base mechanism, limiting reaction paths of intermediates. Herein, we successfully manipulate steric localization Ru single atoms at Co3O4 surface to improve by precise control anchor sites. The delicate structure design can switch mechanism from lattice (LOM) optimized adsorbate (AEM). embedded into cation vacancies reveal an that activates proton donor-acceptor function (PDAM), demonstrating a new catalytic pathway circumvent classic scaling relationship. Steric interactions intermediates anchored Ru-O-Co interface played primary role in optimizing intermediates' conformation and reducing barrier. As comparison, confined sites exhibit process. result, atom spatial position presents 100-fold increase mass activity 36.96 A gRu(ads)-1 4012.11 gRu(anc)-1 1.50 V. These findings offer insights behavior.

Language: Английский

Citations

237