Preparation and electrochemical properties of glass-modified LiCoO2 cathode powders

Seung Ho Choi, Jung Hyun Kim, You Na Ko, Kwang Min Yang, Yun Chan Kang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Pure LiCoO2 nanopowders and those coated with lithium boron oxide (LBO) glass are prepared directly using high-temperature flame spray pyrolysis. Prior to post-treatment, the LiCoO2 powders with nanometer-size particles have low discharge capacities and poor cycle properties, irrespective of the amount of glass material. Post-treatment at 500 C does not improve these properties significantly; however, the LBO glass-modified LiCoO2 powders post-treated at 600 and 700 C demonstrates good cycle performance. The discharge capacity of the 5 wt% glass-modified LiCoO2 powders post-treated at 600 C with a mean particle size of 120 nm, decreases from 122 to 109 mAh g1 after 50 cycles, with a capacity retention of 89%. The capacity retentions of the pure and 2, 5, and 10 wt% glass-modified LiCoO2 powders post-treated at 700 C are 86, 96, 98, and 98% after 50 cycles, respectively.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalJournal of Power Sources
Volume244
DOIs
Publication statusPublished - 2013

Keywords

  • Flame spray pyrolysis
  • Glass material
  • Lithium cobaltate
  • Nanoparticles

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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