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

Seo Hee Ju, Hye Young Koo, Seung Kwon Hong, Eun Byul Jo, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

3 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 initial discharge capacities of the layered LiCo1-xMnxO2 (0 ≤ x ≤ 0.3) cathode particles decreased from 144 to 136 mAh g-1 when the ratios of Co/Mn components were changed from 1/0 to 0.7/0.3. The mean sizes of the spinel LiMn2-yCoyO4 (0 ≤ y ≤ 0.2) cathode particles decreased from 650 to 460 nm when the ratios of Mn/Co components were changed from 2/0 to 1.8/0.2. The initial discharge capacities of the LiMn2-yCoyO4 (0 ≤ y ≤ 0.2) cathode particles decreased from 119 to 86 mAh g-1 when the ratios of Mn/Co components were changed from 2/0 to 1.8/0.2.

Original languageEnglish
Pages (from-to)598-602
Number of pages5
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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