Zheng Ruixue, Meng Qinglei, Zhang Li, Ge Junjie, Liu Changpeng, Xing Wei, Xiao Meiling
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China.
Chemistry. 2023 Feb 24;29(12):e202203180. doi: 10.1002/chem.202203180. Epub 2022 Dec 27.
Electrochemical production of hydrogen peroxide (H O ) via two-electron oxygen reduction reaction (ORR) process is emerging as a promising alternative method to the conventional anthraquinone process. To realize high-efficiency H O electrosynthesis, robust and low cost electrocatalysts have been intensively pursued, among which Co-based catalysts attract particular research interests due to the earth-abundance and high selectivity. Here, we provide a comprehensive review on the advancement of Co-based electrocatalyst for H O electroproduction. The fundamental chemistry of 2-electron ORR is discussed firstly for guiding the rational design of electrocatalysts. Subsequently, the development of Co-based electrocatalysts involving nanoparticles, compounds and single atom catalysts is summarized with the focus on active site identification, structure regulation and mechanism understanding. Moreover, the current challenges and future directions of the Co-based electrocatalysts are briefly summarized in this review.
通过两电子氧还原反应（ORR）过程电化学生产过氧化氢（H₂O₂）正成为一种有前途的替代传统蒽醌法的方法。为了实现高效的H₂O₂电合成，人们一直在积极寻求坚固且低成本的电催化剂，其中钴基催化剂因其储量丰富和高选择性而吸引了特别的研究兴趣。在此，我们对用于H₂O₂电生产的钴基电催化剂的进展进行全面综述。首先讨论两电子ORR的基础化学，以指导电催化剂的合理设计。随后，总结了钴基电催化剂的发展，包括纳米颗粒、化合物和单原子催化剂，重点是活性位点识别、结构调控和机理理解。此外，本综述还简要总结了钴基电催化剂目前面临的挑战和未来方向。
