Oxygen Evolution Reaction in Energy Conversion and Storage: Design Strategies Under and Beyond the Energy Scaling Relationship

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: April 28, 2022

The oxygen evolution reaction (OER) is the essential module in energy conversion and storage devices such as electrolyzer, rechargeable metal-air batteries regenerative fuel cells. adsorption scaling relations between intermediates, however, impose a large intrinsic overpotential sluggish kinetics on OER catalysts. Developing advanced electrocatalysts with high activity stability based non-noble metal materials still grand challenge. Central to rational design of novel high-efficiency catalysts development understanding quantitative structure-activity relationships, which correlate catalytic activities structural electronic descriptors. This paper comprehensively reviews benchmark descriptors for electrolysis, aiming give an in-depth origins electrocatalytic further contribute building theory electrocatalysis. Meanwhile, cutting-edge research frontiers proposing new paradigms crucial strategies circumvent relationship are also summarized. Challenges, opportunities perspectives discussed, intending shed some light concepts advance more efficient enhancing performance.

Language: Английский

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Revealing the role of interfacial water and key intermediates at ruthenium surfaces in the alkaline hydrogen evolution reaction

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

Published: Aug. 30, 2023

Ruthenium exhibits comparable or even better alkaline hydrogen evolution reaction activity than platinum, however, the mechanistic aspects are yet to be settled, which elucidated by combining in situ Raman spectroscopy and theoretical calculations herein. We simultaneously capture dynamic spectral evidence of Ru surfaces, interfacial water, *H *OH intermediates. surfaces exist different valence states potential range, dissociating water differently generating two distinct *H, resulting activities. The local cation tuning effect hydrated Na+ ion large work function high-valence Ru(n+) promote dissociation. Moreover, compared low-valence Ru(0) have more moderate adsorption energies for *OH. They, therefore, facilitate activity. Our findings demonstrate regulation state on intermediates, finally catalytic activity, provide guidelines rational design high-efficiency catalysts.

Language: Английский

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ZnIn2S4-based photocatalysts for photocatalytic hydrogen evolution via water splitting

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 475, P. 214898 - 214898

Published: Oct. 22, 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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Optimizing Hydrogen Binding on Ru Sites with RuCo Alloy Nanosheets for Efficient Alkaline Hydrogen Evolution

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 61(4)

Published: Nov. 25, 2021

Ruthenium (Ru)-based catalysts, with considerable performance and desirable cost, are becoming highly interesting candidates to replace platinum (Pt) in the alkaline hydrogen evolution reaction (HER). The binding at Ru sites (Ru-H) is an important factor limiting HER activity. Herein, density functional theory (DFT) simulations show that essence of Ru-H energy strong interaction between

Language: Английский

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Boosting Electrocatalytic Activity of Ru for Acidic Hydrogen Evolution through Hydrogen Spillover Strategy

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(4), P. 1330 - 1337

Published: March 16, 2022

Pristine Ru generally shows unsatisfying activity for the electrocatalytic hydrogen evolution reaction (HER). How to activate its HER through facile methodologies is very challenging. Recently, metal-supported electrocatalysts integrating metals with efficient adsorption and supports desorption delivered a high performance metal-to-support spillover process, where small metal–support work function difference (ΔΦ) was identified as criterion successful interfacial spillover. Herein, we demonstrate that strategy significantly boosts of by depositing Ru1Fe1 alloy on CoP (Ru1Fe1/CoP) ΔΦ 0.05 eV. Experimentally, Ru1Fe1/CoP (0.7 wt % loading) utilization 139.8 A/mgRu long-term durability in acid. Mechanism investigations authenticated guaranteed from thereafter boosted Ru.

Language: Английский

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Recent Advances in Engineered Ru‐Based Electrocatalysts for the Hydrogen/Oxygen Conversion Reactions

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(41)

Published: Sept. 1, 2022

Abstract The application of renewable energy conversion devices is considered as one the effective ways to alleviate shortage and environmental pollution. Designing electrocatalysts with excellent performance affordable price promising accelerate reaction process large‐scale application. At present, ruthenium (Ru)‐based nanomaterials have shown similar catalytic activity but superior demand compared commercial Pt/C. This undoubtedly makes Ru‐based a perfect candidate replace advanced Pt catalysts. Significant progress made in rational design electrocatalysts, an in‐depth understanding engineering strategies induced effects still at early stage. review summarizes modification for enhancing Ru, including surface structure, metal element, nonmetal size, bimetallic oxides, heterostructure strategies. Then electronic modulation generated by intramolecular intermolecular are elucidated. Further, engineered hydrogen oxygen reactions highlighted, correlations strategies, activity, pathways elaborated. Finally, challenges prospects presented future development practical nanomaterials.

Language: Английский

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Progress in the development of heteroatom-doped nickel phosphates for electrocatalytic water splitting

Journal of Colloid and Interface Science, Journal Year: 2021, Volume and Issue: 607, P. 1091 - 1102

Published: Sept. 16, 2021

Language: Английский

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Swapping Catalytic Active Sites from Cationic Ni to Anionic S in Nickel Sulfide Enables More Efficient Alkaline Hydrogen Generation

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(8)

Published: Jan. 9, 2022

Abstract Tuning active sites in catalyst design is the key to boosting intrinsic activity of hydrogen evolution reaction (HER). Cationic Ni has been widely established as an site nickel sulfide due relatively low Gibbs free energy adsorption ( Δ G H* ). However, one big unsettled issues whether S can be activated a more than NiS 2 . Herein, swapping catalytic from cationic anionic hierarchical structure consisting nanoflowers grown on dual‐phased ‐NiS foam (denoted /NiS ‐NiS) shown. A combined study theoretical calculations and X‐ray photoelectron spectroscopy analysis demonstrate remarkably antidromic electron transfer sites, therefore relieving species endowing higher at over site. The new exhibits superior HER performance, identified by doubling twofold increased turnover frequency value compared its pure counterpart (0.028 s −1 vs 0.015 applied overpotential 200 mV). electrode also demonstrates outstanding toward oxygen overall water splitting.

Language: Английский

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Strong electronic coupling between ruthenium single atoms and ultrafine nanoclusters enables economical and effective hydrogen production

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 312, P. 121378 - 121378

Published: April 6, 2022

Language: Английский

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