X-ray absorption near-edge structure study on positive electrodes of degraded lithium-ion battery

Masahiro Shikano, Hironori Kobayashi, Shinji Koike, Hikari Sakaebe, Yoshiyasu Saito, Hironobu Hori, Hiroyuki Kageyama, Kuniaki Tatsumi

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

18650-type cylindrical cells using LiNi1/3Mn 1/3Co1/3O2 (NMC) and hard carbon as positive and negative electrode material, respectively, were fabricated and degraded by cycle tests. The capacity of the cells remained more than 95% and 85% after cycle tests at 25 and 50 °C, respectively. After the cycle tests, Li-deficient cubic phase was observed on the surface of NMC. This phenomenon should be related to the degradation mechanism of this type of cell.

Original languageEnglish
Pages (from-to)6881-6883
Number of pages3
JournalJournal of Power Sources
Volume196
Issue number16
DOIs
Publication statusPublished - Aug 15 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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