The investigation of Ti-modified LiCoO2 materials for lithium ion battery

Jinpeng Yu, Zenghui Han, Xiaohong Hu, Hui Zhan, Yunhong Zhou, Xingjiang Liu

研究成果: Article査読

29 被引用数 (Scopus)

抄録

EDAX measurement reveals that the atomic ratio of Ti/(Ti + Co) is much higher than the mole feed ratios in the preparation for the LiCo 0.99Ti0.01O2 material. XPS observation further tells that in LiCo0.998Ti0.002O2 phase with quite low Ti amount, almost no Ti can enter into the LiCoO2 lattice, it is more inclined to enrich in the particle surface. Electrochemical examinations show that the cycling stability of LiCo0.998Ti 0.002O2 is as good as that of LiCoO2/LiCo 0.99Ti0.01O2 composite between 3.0 and 4.3 V, and the latter has a better rate performance. It is considered that the difference of the high rate performance between the Ti-modified LiCoO 2 materials is more likely to originate from the different particle characteristics, when their Ti amounts are low enough.

本文言語English
ページ(範囲)136-139
ページ数4
ジャーナルJournal of Power Sources
262
DOI
出版ステータスPublished - 2014 9 15

ASJC Scopus subject areas

  • 電子工学および電気工学
  • エネルギー工学および電力技術
  • 再生可能エネルギー、持続可能性、環境
  • 物理化学および理論化学

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