Comparative studies on ZnO-coated and uncoated LiCoO2 cycled at various rates and temperatures

Seok Min Moon, Wonyoung Chang, Dong Jin Byun, Joong Kee Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Modification by surface coating of cathode materials is one of the preferred methods to achieve improved electrochemical performance, especially at a high-charge cut-off voltage. In this study, ZnO-coated LiCoO2 powders were prepared by plasma-enhanced chemical vapor deposition (PE-CVD). In our previous work [1], the roles of ZnO coating in the capacity retention of LiCoO2 during high-voltage cycling in the range of 3.0 V-4.5 V and the thermal stability of the charged LiCoO2 electrode were investigated as a function of the coating amount. This study confirms the positive effect of ZnO coating on cyclic performances of LiCoO2, in particular at various C-rates and operating temperatures. In addition, the structural stability of the LiCoO2 materials coated with different amount of ZnO during cycling was investigated using cyclic voltammetry.

Original languageEnglish
JournalCurrent Applied Physics
Volume10
Issue number4 SUPPL.
DOIs
Publication statusPublished - 2010 Nov 1

Fingerprint

coatings
Coatings
Coated materials
Temperature
cycles
temperature
structural stability
Electric potential
Plasma enhanced chemical vapor deposition
operating temperature
Powders
Cyclic voltammetry
high voltages
Cathodes
Thermodynamic stability
thermal stability
cut-off
cathodes
vapor deposition
Electrodes

Keywords

  • Cathode materials
  • Lithium-ion batteries
  • Plasma-enhanced chemical vapor deposition
  • Structural stability
  • Zinc oxide coating

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Comparative studies on ZnO-coated and uncoated LiCoO2 cycled at various rates and temperatures. / Moon, Seok Min; Chang, Wonyoung; Byun, Dong Jin; Lee, Joong Kee.

In: Current Applied Physics, Vol. 10, No. 4 SUPPL., 01.11.2010.

Research output: Contribution to journalArticle

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