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.13 The in situ XAFS analysis of Cu1/Au catalyst[53] （A） The least-squares curve-fitting analysis of operando EXAFS spectra at the Cu K-edge； （B） corresponding Re［k3χ（k）］ oscillations； （C） Cu K-edge XANES experimental spectra of the sample under ex situ condition and -0.6 V and the calculated spectra for Cu atoms at the corner， edge， （100） plane， and （111） plane and corresponding configurations； （D） schematic for the coordination number of Cu atoms at different sites； （E） schematic for the surface migration of single Cu atoms under working conditions. Copyright 2020， American Chemical Society.