Improvement of capacity fading resistance of LiMn2O4 by amphoteric oxides

Sung Bin Park, Ho Chul Shin, Wan Gyu Lee, Won Il Cho, Ho Jang

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The capacity fading of LiMn2O4 is improved by adding amphoteric oxides such as Al2O3, ZnO, SnO2, and ZrO2 to the cathode slurry. The effectiveness of the amphoteric oxides on the fade resistance of LiMn2O4 is compared by measuring the capability of scavenging hydrofluoric acid (HF) in the electrolyte by the oxides using a pH meter and by BET surface analysis. Results suggest that the capacity fading is determined by the reactivity of oxides with HF and the effective surface-area of the oxide particles when they were mixed in the slurry. Zinc oxide is the most effective of the oxides in scavenging HF.

Original languageEnglish
Pages (from-to)597-601
Number of pages5
JournalJournal of Power Sources
Volume180
Issue number1
DOIs
Publication statusPublished - 2008 May 15

Keywords

  • Amphoteric oxide
  • Capacity fading hydrofluoric acid scavenging
  • Coating
  • LiMnO
  • Lithium-ion battery

ASJC Scopus subject areas

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

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