Effect of annealing temperature on electrochemical performance of thin-film LiMn2O4 cathode

Fu Yun Shih, Kuan-Zong Fung

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Spinel LiMn2O4 thin-film cathodes were obtained by spin-coating the chitosan-containing precursor solution on a Pt-coated silicon substrate followed by a two-stage heat-treatment procedure. The LiMn2O4 film calcined at 700 °C for 1 h showed the highest Li-ion diffusion coefficient, 1.55 × 10-12 cm2 s-1 (PSCA measurement) among all calcined films. It is attributed to the larger interstitial space and better crystal perfection of LiMn2O4 film calcined at 700 °C for 1 h. Consequently, the 700 °C-calcined LiMn2O4 film exhibited the best rate performance in comparison with the ones calcined at other temperatures.

Original languageEnglish
Pages (from-to)179-185
Number of pages7
JournalJournal of Power Sources
Volume159
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Sep 13

All Science Journal Classification (ASJC) codes

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

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