Fine cathode particles prepared by solid-state reaction method using nano-sized precursor particles

Seo Hee Ju, Yun Chan Kang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Fine-sized Li-Co-Mn-O cathode particles with various ratios of cobalt and manganese components were prepared by conventional solid-state reaction method using the nano-sized precursor particles. The nano-sized precursor particles of cobalt and manganese components were prepared by spray pyrolysis. The LiCo1-xMnxO2 (0.1 ≤ x ≤ 0.3) particles had finer size than that of the pure LiCoO2 particles. Manganese component disturbed the growth of the LiCo1-xMnxO2 cathode particles prepared by solid-state reaction method. The pure LiCoO2 cathode particles had high initial discharge capacity of 144 mAh g-1. However, the initial discharge capacities of the LiCo1-xMnxO2 (0.1 ≤ x ≤ 0.3) cathode particles decreased with increasing the contents of the manganese component. The discharge capacities of the LiMn2-yCoyO4 (0 ≤ y ≤ 0.2) cathode particles decreased abruptly with increasing the contents of the cobalt component. The pure LiMn2O4 cathode particles had the initial discharge capacities of 119 mAh g-1.

Original languageEnglish
Pages (from-to)1161-1166
Number of pages6
JournalJournal of Power Sources
Volume174
Issue number2
DOIs
Publication statusPublished - 2007 Dec 6
Externally publishedYes

Keywords

  • Cathode particle
  • Lithium cobaltate
  • Lithium manganate
  • Spray pyrolysis

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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