Large-scale utilization of hydrogen energy is considered as the key to resolve the problem of ever-increasing environmental pollution and energy shortage in today's world. As such, using renewable energy and renewable materials for hydrogen production by water electrolysis has become a research hotspot in the field of hydrogen energy in recent years. Wood, as the most widely sourced and renewable biomass material, has a rich pore structure, numerous hydroxyl groups, excellent mechanical properties, corrosion resistance and modifiable properties. These merits enable wood as a potential candidate for the substrate of self-supporting catalytic electrodes in water electrolysis. However, there is currently a lack of a comprehensive summary of the working mechanism and essential properties of wood-based catalysts for water electrolysis. Here, we provide an overview of the current status, design, construction, and characterization of wood-based catalytic electrodes, including strategies for pretreatment and loading of active sites. Furthermore, we discuss the potential of wood-based catalytic electrodes for large-scale water electrolysis at high current density and propose solutions for industrial-scale implementation. We also explore the future development and challenges of wood-based catalysts in the field of water electrolysis.

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用于大规模制氢的木质催化电极的兴起

氢能的大规模利用被认为是解决当今世界日益严重的环境污染和能源短缺问题的关键。因此，利用可再生能源和可再生材料电解水制氢已成为近年来氢能领域的研究热点。木材作为来源最广泛、可再生的生物质材料，具有丰富的孔隙结构、众多的羟基、优异的机械性能、耐腐蚀性和可改性性能。这些优点使木材成为水电解中自支撑催化电极基材的潜在候选者。然而，目前对水电解木质催化剂的工作机理和基本性能缺乏全面的总结。在这里，我们概述了木质催化电极的现状、设计、构造和表征，包括活性位点的预处理和负载策略。此外，我们讨论了木质催化电极在高电流密度下大规模水电解的潜力，并提出了工业规模实施的解决方案。我们还探讨了木质催化剂在水电解领域的未来发展和挑战。