Cathode performance of Co-doped Li2O with specific capacity (400 mAh/g) enhanced by vinylene carbonate

Hiroaki Kobayashi, Mitsuhiro Hibino, Yuki Kubota, Yoshiyuki Ogasawara, Kazuya Yamaguchi, Tetsuichi Kudo, Shin Ichi Okuoka, Hironobu Ono, Koji Yonehara, Yasutaka Sumida, Noritaka Mizuno

研究成果: Article査読

12 被引用数 (Scopus)

抄録

A Co-doped Li2O (CDL) was synthesized using a planetary ball mill and examined as a cathode material for lithium-ion batteries. When vinylene carbonate, which is often employed as an additive in an electrolyte, was used not only as an additive in the electrolyte but also as a treatment agent for CDL, the specific capacity of CDLwas greatly enhanced and the charge-discharge cycles with specific charging and discharging capacities of 400 mAh/g could be repeated for more than 50 times. Co K-edge XANES spectroscopy and quantitative analysis of peroxide species revealed that the redox reactions of cobalt ions, formation/neutralization of O 2p electron holes, and generation/annihilation of peroxide species occurred during the charge-discharge process.

本文言語English
ページ(範囲)A750-A753
ジャーナルJournal of the Electrochemical Society
164
4
DOI
出版ステータスPublished - 2017
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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