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

17 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

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electric batteries
Cathodes
lithium
cathodes
solid state
composite materials
Composite materials
synthesis
solid phases
safety
ions
X ray photoelectron spectroscopy
examination
Scanning electron microscopy
cycles
scanning electron microscopy
Lithium-ion batteries
Hot Temperature

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

Cite this

Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries. / Yu, Jinpeng; Han, Zenghui; Hu, Xiaohong; Zhan, Hui; Zhou, Yunhong; Liu, Xingjiang.

In: Journal of Power Sources, Vol. 225, 01.03.2013, p. 34-39.

Research output: Contribution to journalArticle

Yu, Jinpeng ; Han, Zenghui ; Hu, Xiaohong ; Zhan, Hui ; Zhou, Yunhong ; Liu, Xingjiang. / Solid-state synthesis of LiCoO2/LiCo0.99Ti 0.01O2 composite as cathode material for lithium ion batteries. In: Journal of Power Sources. 2013 ; Vol. 225. pp. 34-39.
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AU - Han, Zenghui

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AU - Zhan, Hui

AU - Zhou, Yunhong

AU - Liu, Xingjiang

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AB - 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.

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