Electrochemical properties of iodine-containing lithium manganese oxide spinel

Chi Hwan Han, Young Sik Hong, Hyun Sil Hong, Keon Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Iodine-containing, cation-deficient, lithium manganese oxides (ICCD-LMO) are prepared by reaction of MnO2 with LiI. The MnO2 is completely transformed into spinel-structured compounds with a nominal composition of Li1-δMn2-2δO4Ix. A sample prepared at 800 °C, viz. Li0.99Mn1.98O4I0.02, exhibits an initial discharge capacity of 113 mA h g-1 with good cycleability and rate capability in the 4-V region. Iodine-containing, lithium-rich lithium manganese oxides (ICLR-LMO) are also prepared by reaction of LiMn2O4 with LiI, which results in a nominal composition of Li1+xMn2-xO4Ix. Li1.01Mn1.99O4I0.02 shows a discharge capacity of 124 mA h g-1 on the first cycle and 119 mA h g-1 a on the 20th cycle. Both results indicate that a small amount of iodine species helps to maintain cycle performance.

Original languageEnglish
Pages (from-to)176-180
Number of pages5
JournalJournal of Power Sources
Volume111
Issue number1
DOIs
Publication statusPublished - 2002 Sep 18

Keywords

  • Iodine-containing
  • Lithium manganese oxide
  • 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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