Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries

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

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We have fabricated a micron-sized LiCoO2/LiCo 0.99Ti0.01O2 composite successfully by solid-phase synthesis, its core-shell structure has been proved by SEM and XPS observation. Electrochemical examinations show that comparing with LiCoO 2 and LiCo0.99Ti0.01O2, the obtained LiCoO2/LiCo0.99Ti0.01O2 composite presents greatly enhanced cycling stability as well as rate capability. In addition, DSC measurement indicates that LiCoO2/LiCo 0.99Ti0.01O2 has a better thermal safety than LiCoO2. It is considered that all the improvement should be explained by the particular core-shell morphology of the LiCoO2/LiCo 0.99Ti0.01O2 sample.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalJournal of Power Sources
Volume225
DOIs
Publication statusPublished - 2013 Mar 1

Keywords

  • Core-shell structure
  • Layered compound
  • Lithium batteries
  • Solid-phase synthesis

ASJC Scopus subject areas

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

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