析氧反应中单原子催化剂的研究进展

Research Progress on Single Atom Catalysts inOxygen Evolution Reaction

析氧反应是电解水技术的半反应之一,但其缓慢的反应动力学影响着整个电解水过程,并限制了电解水的能量转换效率和整体化学反应速率.为解决这个问题,开发高效、经济的析氧反应电催化剂一直是研究人员努力的方向.目前,具有100%原子利用率、高稳定性和优异活性的单原子催化剂在析氧反应过程中发挥着显著作用.对单原子催化剂的不同制备方法(原子层沉积法与电化学还原沉积法等)和单原子催化剂常用的载体材料(多孔有机框架与石墨烯等)进行了总结和分析,并在此基础上对其未来的发展提出展望,以期能为单原子催化剂的研究者们提供一定的参考和研究思路.

Oxygen evolution reaction is one of the half reactions of water electrolysis technology,but its slow reaction kinetics greatly affects the whole process of water electrolysis,and limits the energy conversion efficiency of water electrolysis and the overall reaction rate.In order to solve this problem,the development of efficient and economical electrocatalysts for oxygen evolution reaction has been what the researchers aim to achieve.At present,single atom catalysts with 100%atomic utilization,high stability and excellent activity play a significant role in the process of oxygen evolution reaction.In this review,different preparation methods of single atom catalysts(atomic layer deposition,electrochemical reduction deposition,etc.)are classified and summarized based on the research history of single atom catalysts in oxygen evolution reaction.At the same time,the commonly used carrier materials(porous organic framework,graphene,etc.)for single atom catalysts are summarized and analyzed in this review.Finally,the prospect of its future development is put forward in order to provide some reference and research ideas for the researchers of single atom catalysts.