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

Fu Yun Shih, Kuan-Zong Fung

Research output: Contribution to journalArticle

20 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

Fingerprint

Cathodes
cathodes
Annealing
Thin films
annealing
thin films
Temperature
temperature
Chitosan
Spin coating
Silicon
spinel
coating
interstitials
heat treatment
diffusion coefficient
Heat treatment
Ions
Crystals
lithium manganese oxide

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

Cite this

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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.",
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Effect of annealing temperature on electrochemical performance of thin-film LiMn2O4 cathode. / Shih, Fu Yun; Fung, Kuan-Zong.

In: Journal of Power Sources, Vol. 159, No. 1 SPEC. ISS., 13.09.2006, p. 179-185.

Research output: Contribution to journalArticle

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