Chinese Journal of Catalysis ›› 2027, Vol. 92: 65-86.DOI: 10.1016/S1872-2067(26)65280-1

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Engineering electrocatalysts for industrial-current-density alkaline hydrogen evolution: Design principles and future perspectives

Panyong Kuanga,c,*(), Zhenrui Nia, Sihan Chena, Weilai Yub,*()   

  1. a Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430078, Hubei, China
    b Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
    c Inner Mongolia Institute of Technology, China University of Geosciences, Ordos 017010, Inner Mongolia, China
  • Received:2026-07-14 Accepted:2026-09-14 Online:2026-12-05 Published:2026-10-30
  • Contact: *E-mail: kuangpanyong@cug.edu.cn (P. Kuang),
    weilaiyu@ust.hk (W. Yu).
  • About author:Panyong Kuang (China University of Geosciences) received his Ph.D. degree in 2019 and completed his postdoctoral research in 2021 at Wuhan University of Technology under the supervision of Prof. Jiaguo Yu. In 2021, he joined the Laboratory of Solar Fuel at China University of Geosciences (Wuhan). From 2023 to 2024, he was a visiting scholar at Cardiff University, under the supervision of Prof. Graham J. Hutchings. His research focuses on the precise synthesis and structural regulation of supported, heterostructured, and low-loading noble-metal-based catalysts for electrochemical energy conversion, including water splitting and carbon dioxide reduction. He has published more than 50 SCI-indexed papers and has been recognized among the World’s Top 2% Scientists (2023-2025). He serves as a young editorial board member of Rare Metals, Acta Physico-Chimica Sinica, and Chinese Journal of Rare Metals, and is a member of the Chinese Energy Society and the Energy Conversion and Storage Committee of the Wuhan Energy Society.
    Weilai Yu is an Assistant Professor in the Department of Chemistry at the Hong Kong University of Science and Technology (HKUST). His research program aims at seamlessly integrating fundamental electrochemistry, surface science, and functional material-interface design toward developing next-generation technologies for energy conversion and storage, aided by an interdisciplinary approach that combines high-throughput and autonomous experimentation with artificial intelligence. He received his B.S. and Ph.D. in Chemistry from Wuhan University and the California Institute of Technology (Caltech), respectively. Prior to joining HKUST, he was an Assistant Professor of Chemical Engineering and Applied Chemistry at the University of Toronto and a Postdoctoral Scholar in Chemical Engineering at Stanford University. His notable academic recognitions include the Electrochemical Society (ECS) Battery Division Postdoctoral Research Award (2025) and selection as a Young Scientist at the Lindau Nobel Laureate Meeting (2022). He currently serves as a Community Editorial Board Member of Materials Horizons, a flagship journal of the Royal Society of Chemistry (RSC).
  • Supported by:
    National Key Research and Development Program of China(2022YFB3803600);National Natural Science Foundation of China(22272153);National Natural Science Foundation of China(22479132);National Natural Science Foundation of China(22005232);National Natural Science Foundation of China(22238009);National Natural Science Foundation of China(U23A20102);National Natural Science Foundation of China(W2512051);National Natural Science Foundation of China(22361142704)

Abstract:

Renewable electricity-powered water electrolysis is a cornerstone technology for sustainable hydrogen (H2) production and future carbon-neutral energy systems. However, realizing economically viable large-scale H2 production requires electrocatalysts capable of sustaining high activity and long-term durability at industrial current densities, where intensified mass transport limitations, rapid gas evolution, and accelerated catalyst degradation fundamentally alter reaction kinetics and device performance. Recent advances in alkaline hydrogen evolution reaction (HER) electrocatalysts have demonstrated that efficient industrial-current-density operation relies not only on intrinsic catalytic activity but also on the synergistic optimization of catalyst architecture, interfacial mass transport, bubble dynamics, and structural stability. In this review, we provide a comprehensive overview of recent progress in alkaline HER electrocatalysts from the perspectives of morphological and interfacial engineering, intrinsic activity regulation, and durability enhancement, while establishing the relationships among catalyst structure, reaction kinetics, mass transport, gas evolution, and long-term operational stability. We further discuss challenges in bridging laboratory-scale catalyst development with practical water electrolysis, including interfacial microenvironment regulation, catalyst-layer engineering, standardized performance evaluation, and dynamic operation under renewable-energy-driven conditions. Finally, we highlight emerging design principles and future opportunities for developing highly efficient and durable HER electrocatalysts for practical green hydrogen production.

Key words: Hydrogen evolution reaction, Industrial current density, Morphological and interfacial engineering, Intrinsic activity engineering, Durability engineering