Ru/Ir‐Based Electrocatalysts for Oxygen Evolution Reaction in Acidic Conditions: From Mechanisms, Optimizations to Challenges

Advanced Science, Journal Year: 2024, Volume and Issue: 11(21)

Published: March 19, 2024

Abstract The generation of green hydrogen by water splitting is identified as a key strategic energy technology, and proton exchange membrane electrolysis (PEMWE) one the desirable technologies for converting renewable sources into hydrogen. However, harsh anode environment PEMWE oxygen evolution reaction (OER) involving four‐electron transfer result in large overpotential, which limits overall efficiency production, thus efficient electrocatalysts are needed to overcome high overpotential slow kinetic process. In recent years, noble metal‐based (e.g., Ru/Ir‐based metal/oxide electrocatalysts) have received much attention due their unique catalytic properties, already become dominant acidic OER process applied commercial devices. these still face thorny problem conflicting performance cost. this review, first, metal briefly classified according forms existence, mechanisms outlined. Then, focus on summarizing improvement strategies with respect activity stability over years. Finally, challenges development prospects discussed.

Language: Английский

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Modulation Strategies for the Preparation of High‐Performance Catalysts for Urea Oxidation Reaction and Their Applications

Small, Journal Year: 2023, Volume and Issue: 19(45)

Published: July 11, 2023

Abstract Compared with the traditional electrolysis of water to produce hydrogen, urea‐assisted hydrogen has significant advantages and received extensive attention from researchers. Unfortunately, urea oxidation reaction (UOR) involves a complex six‐electron transfer process leading high overpotential, which forces researchers develop high‐performance UOR catalysts drive development splitting. Based on mechanism literature research, this review summarizes strategies for preparing highly efficient catalysts. First, is introduced characteristics excellent are pointed out. Aiming at this, following modulation proposed improve catalytic performance based summarizing various literature: 1) Accelerating active phase formation reduce initial potential; 2) Creating double sites trigger new mechanism; 3) adsorption promoting C─N bond cleavage ensure effective conduct UOR; 4) Promoting desorption CO 2 stability prevent catalyst poisoning; 5) electron overcome inherent slow dynamics 6) Increasing or surface area. Then, application in electrochemical devices summarized. Finally, current deficiencies future directions discussed.

Language: Английский

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High-Performance MoP-Mo₂C/C Heterogeneous Nanoparticle Catalysts for Alkaline Hydrogen Evolution and Oxidation Reactions

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(5), P. 1678 - 1685

Published: March 27, 2024

The slow kinetics of the alkaline hydrogen evolution reaction (HER) and oxidation (HOR) must be upgraded to achieve a renewable cycle. Transition metal phosphides transition carbides exhibit excellent activity toward diverse catalytic reactions. synthesis MoP-Mo2C heterogeneous nanoparticles coated with porous carbon network (MoP-Mo2C/C) via one-step heat treatment was reported, which exhibited low overpotential at 10 mA cm–2 (102.1 mV), Tafel slope (53.1 mV dec–1), stability (96 h) for HER. In addition, MoP-Mo2C/C performance HOR, an exchange current density 1.40 cm–2. Density functional theory simulations indicated that electronic structure optimized, its Gibbs free energy approximately zero, is origin fast kinetics. This work provides promising strategy designing high-performance bifunctional electrocatalysts.

Language: Английский

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Heterogeneous strategy constructing a built-in electric field: CoP/FeP bifunctional electrode for overall water splitting

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 152084 - 152084

Published: May 9, 2024

Language: Английский

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Heterostructured electrocatalysts for the oxygen evolution reaction

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 18832 - 18865

Published: Jan. 1, 2024

This review focuses mainly on the overall facilitating effect of heterostructures OER process. The fabrication heterostructured electrocatalysts and relationship between their structures electrocatalytic properties are discussed.

Language: Английский

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Advancements in transition bimetal catalysts for electrochemical 5-Hydroxymethylfurfural (HMF) oxidation

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 98, P. 24 - 46

Published: June 24, 2024

Language: Английский

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The future of alkaline water splitting from the perspective of electrocatalysts-seizing today's opportunities

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216190 - 216190

Published: Sept. 5, 2024

Language: Английский

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Dual Doping in Precious Metal Oxides: Accelerating Acidic Oxygen Evolution Reaction

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1582 - 1582

Published: Feb. 13, 2025

Developing a highly active and stable catalyst for acidic oxygen evolution reactions (OERs), the key half-reaction proton exchange membrane water electrolysis, has been one of most cutting-edge topics in electrocatalysis. A dual-doping strategy optimizes electronic environment, modifies coordination generates vacancies, introduces strain effects through synergistic effect two elements to achieve high catalytic performance. In this review, we summarize progress dual doping RuO2 or IrO2 OERs. The three main mechanisms OERs are dicussed firstly, followed by detailed examination development history catalysts, from experimentally driven systems machine learning (ML) theoretical screening systems. Lastly, provide summary remaining challenges future prospects, offering valuable insights into

Language: Английский

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Blocking oxygen evolution reaction for efficient organic electrooxidation coupling hydrogen production by using layered double hydroxide rich in active oxygen

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 333, P. 122808 - 122808

Published: April 25, 2023

Language: Английский

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Recent Advances in Transition Metal Phosphide Nanocatalysts for H2 Evolution and CO2 Reduction

Catalysts, Journal Year: 2023, Volume and Issue: 13(7), P. 1046 - 1046

Published: June 28, 2023

Green hydrogen energy has captivated researchers and is regarded as a feasible option for future energy-related aspirations. The emerging awareness of renewable energy-driven generation carbon dioxide reduction calls the use unconventional schematic tools in fabrication nanocatalyst systems. Transition metal phosphides are state-of-art, cost-effective, noble-metal-free materials that have been comprehensively examined sustainable applications. Recent reports on these advanced functional cemented their candidature high-performance catalytic systems production conversion into value-added chemical feedstock. Bimetallic NiCoP (238.2 mmol g−1 h−1) exhibits top-notch competence toward photocatalytic HER reveals application pristine class TMPs, whereas heterostructured Ni2P/CdS was found to be fit photochemical CO2 reduction, well HER. On other hand, Ni2P recently ascertained an efficient electrocatalytic system CO2RR A wide array physicochemical modulations, such compositional structural engineering, defect generation, facet control, used improving efficiency transition phosphide nanostructures. In this review, we succinctly discuss proficiency green via electrochemical pathways. We detail significance properties brief readers about synthetic advancements without deviating from our goal summarizing recent achievements

Language: Английский

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