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 language | English |
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Pages (from-to) | 900-903 |
Number of pages | 4 |
Journal | Solid State Ionics |
Volume | 180 |
Issue number | 11-13 |
DOIs | |
Publication status | Published - 2009 Jun 22 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Materials Science
- Condensed Matter Physics