Cited by 15Electrocatalysts for Energy ConversionFuel Cells and Related MaterialsCO2 Reduction Techniques and Catalysts

Progress of Amorphous Catalysts for an Acidic Oxygen Evolution Reaction

Wei, Liaokuo, Yang, Fulin, Cai, Weiwei, Feng, Ligang·2025·Energy & Fuels

Abstract

The pursuit of efficient and durable electrocatalysts for an acidic oxygen evolution reaction (OER) is crucial to advancing proton-exchange membrane water electrolysis (PEMWE) toward sustainable hydrogen production. Amorphous catalysts, with their short-range order and long-range disorder, offer significant advantages over crystalline counterparts, such as abundant active sites and adaptive reconstruction capabilities. In light of the significant advances in amorphous materials for acidic OER electrocatalysis, herein, we aim to provide a comprehensive review of the fundamental principles, synthetic methodologies, and catalytic innovations in this rapidly evolving field. First, fundamental structural and mechanistic differences between amorphous and crystalline materials are analyzed, highlighting how amorphous structures enhance charge transfer and reaction kinetics. Subsequently, the typical synthetic methods for amorphous catalysts are categorized, emphasizing the precise control over metastable amorphous phases. Recent advances in both noble-metal-based and non-noble-metal-based amorphous catalysts are then discussed, highlighting performance in acidic electrolytes and the impact of regulation strategies. Finally, current challenges are outlined, including scalable precise synthesis, atomic-scale active site identification, surface reconstruction visualization, and industrial PEMWE validation. This review offers a roadmap for designing high-performance amorphous electrocatalysts toward an acidic OER in PEMWE.

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Crossref · 10.1021/acs.energyfuels.5c02796

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Authors
Wei, L., Yang, F., Cai, W., & Feng, L.
Affiliations
Kunming University of Science and Technology (CN)
Corresponding author
Feng, Ligang
Venue
Energy & Fuels
Published
2025-07-12
Volume
39
Issue
29
Pages
14007-14027
ISSN
  • 0887-0624 (ISSN-L)
  • 1520-5029
OpenAlex
W4412364437
Cited by
15
References
172
Citations by year
2026: 11 · 2025: 4
FWCI
2.06
Type
journal article
Language
en
Open access
closed
Locations
Energy & Fuels (publishedVersion)
Funders
  • National Natural Science Foundation of China (22102105, 22272148)
  • Xingdian Talent Program of Yunnan Province (KKXX202551001)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
Keywords
amorphous electrocatalysts, acidic oxygen evolution reaction, proton exchange membrane water electrolysis, hydrogen production, noble metal-free catalysts, non-noble metal catalysts, surface reconstruction, charge transfer, active site identification, catalyst stability

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