XAFS技术在单原子电催化中的应用

汪思聪, 庞贝贝, 刘潇康, 丁韬, 姚涛

Application of XAFS Technique in Single-atom Electrocatalysis

WANG Sicong, PANG Beibei, LIU Xiaokang, DING Tao, YAO Tao

Fig.9 Illustration of single⁃atom Ru electrocatalyst for OER[41] （A） HAADF-STEM image of single-atom Ru； （B） magnified image of （A）； （C） in situ SR-IR spectra of Ru-N-C catalyst； （D） Operando EXAFS spectra and first-shell fitting curves for Ru-N-C at different applied voltages from the open circuit condition to 1.5 V during OER； （E） Operando XANES spectra for Ru-N-C during OER； （F） schematic of the whole OER mechanism on Ru-N-C catalyst in the acidic electrolyte. The balls in gray， blue， red， white， and light green represent C， N， O， H， and Ru atoms， respectively. Copyright 2019， Springer-Nature.