Zheng Weiqiong, Zhu Ran, Wu Huijuan, Ma Tian, Zhou Hongju, Zhou Mi, He Chao, Liu Xikui, Li Shuang, Cheng Chong
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China.
Angew Chem Int Ed Engl. 2022 Oct 10;61(41):e202208667. doi: 10.1002/anie.202208667. Epub 2022 Sep 5.
Single-atom sites (SASs) are commonly stabilized and influenced by neighboring atoms in the host; disclosing the structure-reactivity relationships of SASs in water electrolysis is one of the grand challenges originating from the tremendous wealth of support materials with complex structures. Through a multidisciplinary view of the design principles, synthesis strategies, characterization techniques, and theoretical analysis of structure-performance correlations, this timely Review is dedicated to summarizing the most recent progress in tailoring bond microenvironments on different supports and discussing the reaction pathways and performance advantages of different SAS structures for water electrolysis. The essence and mechanisms of how SAS structures influence electrocatalysis and the critical requirements for future developments are discussed. Finally, the challenges and perspectives are also provided to stimulate the practical, widespread utilization of SAS catalysts in water-splitting electrolyzers.
单原子位点（SASs）通常在主体中由相邻原子稳定并受其影响；揭示水电解中SASs的结构-反应性关系是源于具有复杂结构的大量载体材料所带来的重大挑战之一。通过从设计原则、合成策略、表征技术以及结构-性能相关性的理论分析等多学科视角出发，本及时的综述致力于总结在不同载体上定制键微环境的最新进展，并讨论不同SAS结构用于水电解的反应途径和性能优势。探讨了SAS结构影响电催化的本质和机制以及未来发展的关键要求。最后，还提出了挑战和展望，以促进SAS催化剂在水电解槽中的实际广泛应用。
