화학공학소재연구정보센터
Electrochimica Acta, Vol.277, 197-204, 2018
Surface redox on Li[Ni1/3Mn1/3Co1/3]O-2 characterized by in situ X-ray photoelectron spectroscopy and in situ Auger electron spectroscopy
This work applies in situ Auger electron spectroscopy and X-ray photoelectron spectroscopy to the study of surface redox on Li[Ni1/3Mn1/3Co1/3]O-2 during charging and overcharging. We observe that all three transition metals are surface redox active, and that oxygen oxidation occurs for voltages above approximate to 4.2 V O-2 loss above approximate to 4.7 V, mediated by carbon redox, leads to partial reduction of the transition metals at the surface during overcharging. Published by Elsevier Ltd.