Analysis of Peroxide Formation during Charge and Discharge in Co-doped Li2O Cathode of Lithium Ion Battery by Raman Spectroscopy

作者：Shimada Yuta; Hibino Mitsuhiro^*; Ogasawara Yoshiyuki^*; Yamaguchi Kazuya; Kudo Tetsuichi; Okuoka Shin ichi; Ono Hironobu; Yonehara Koji; Sumida Yasutaka; Mizuno Noritaka

来源：Chemistry Letters, 2018, 47(6): 776-779.

DOI：10.1246/cl.180164

• Co-doped Li2O
• Lithium ion battery
• Raman spectroscopy

We performed Raman spectroscopy of Co-doped Li2O (CDL), a cathode material for lithium-ion batteries. During the charge process of CDL, the spectra showed a new peak at 790 cm(-1), assignable to peroxide. The charge range where the peak was observed coincided with the range where oxygen gas was generated from the reaction of the charged CDL with water using platinum as catalyst. The peak was reduced and disappeared during discharge. This indicated the formation/ decomposition of peroxide in CDL during charge/discharge.

• 出版日期2018-6