Effect of chitosan on deposition of LiCoO2 thin film for Li-ion batteries

C. T. Ni, K. Z. Fung

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Deposition of LiCoO2 thin film using chitosan-added precursor solution was found to be a cost-effective way to fabricate cathode for Li-ion thin film batteries. The structures and electrochemical performance of such LiCoO2 cathode were characterized by using an X-ray diffracotmeter (XRD), FTIR and charge-discharge tests. After annealing at ca. 500 °C, the results of XRD showed that the LiCoO2 gel started to crystallize and showed hexagonal phase with a space group of R3̄m. The enhanced stability of the precursor solution by the addition of chitosan is attributed to the complexation between metal ions and the -NH2 groups of chitosan.The electrochemical behaviour for the deposited films calcined at 700 °C for 4 h was also characterized by charge-discharge test. The result revealed that the film deposited from chitosan-containing precursor solution possesses an initial discharge capacity of 129 mAh g- 1.

Original languageEnglish
Pages (from-to)900-903
Number of pages4
JournalSolid State Ionics
Volume180
Issue number11-13
DOIs
Publication statusPublished - 2009 Jun 22

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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