Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Renewable Energy Conversion and Storage Center, Nankai University, Tianjin, 300071, China.
Adv Mater. 2020 Jan;32(3):e1806326. doi: 10.1002/adma.201806326. Epub 2019 Apr 1.
Electrochemical water splitting is a promising technology for sustainable conversion, storage, and transport of hydrogen energy. Searching for earth-abundant hydrogen/oxygen evolution reaction (HER/OER) electrocatalysts with high activity and durability to replace noble-metal-based catalysts plays paramount importance in the scalable application of water electrolysis. A freestanding electrode architecture is highly attractive as compared to the conventional coated powdery form because of enhanced kinetics and stability. Herein, recent progress in developing transition-metal-based HER/OER electrocatalytic materials is reviewed with selected examples of chalcogenides, phosphides, carbides, nitrides, alloys, phosphates, oxides, hydroxides, and oxyhydroxides. Focusing on self-supported electrodes, the latest advances in their structural design, controllable synthesis, mechanistic understanding, and strategies for performance enhancement are presented. Remaining challenges and future perspectives for the further development of self-supported electrocatalysts are also discussed.
电化学水分解是一种有前途的可持续能源转化、存储和传输技术。寻找丰富的氢/氧析出反应（HER/OER）电催化剂，以高活性和耐久性替代基于贵金属的催化剂，对于可扩展的水电解应用至关重要。与传统的涂覆粉末形式相比，独立式电极结构由于动力学和稳定性得到增强而具有吸引力。本文通过选择硫属化物、磷化物、碳化物、氮化物、合金、磷酸盐、氧化物、氢氧化物和氢氧化物的例子，综述了开发基于过渡金属的 HER/OER 电催化材料的最新进展。重点介绍了自支撑电极的最新进展，包括其结构设计、可控合成、机理理解以及性能增强策略。还讨论了自支撑电催化剂进一步发展的遗留挑战和未来展望。
