Method for adjusting ORR selectivity of cobalt monatomic carbon-based catalyst and application

The invention belongs to the field of preparation and application of new materials, and provides a method for adjusting ORR selectivity of a cobalt monatomic carbon-based catalyst and application of the method, post-adjustment is carried out on an existing Co-N-C four-electron ORR catalyst, a Co-N4 active site with four-electron activity is rapidly recombined into low-coordination Co-N2 through a mode of low-temperature heat treatment with oxygen-containing molecules, and the low-coordination Co-N2 is subjected to high-temperature heat treatment with oxygen-containing molecules. Meanwhile, rich epoxy groups are introduced into a second coordination layer, an active site electronic structure and an intermediate adsorption behavior are optimized at a molecular level, adjustment of a catalytic path from 4 electrons to an optimal 2 electron path is realized, and synthesis of a high-selectivity electrochemical H2O2 production catalyst is realized. 本发明属于新材料制备及应用领域，本发明提供了一种调节钴单原子碳基催化剂ORR选择性的方法及应用，对已有的Co-N-C四电子ORR催化剂