Electrochemical properties of iodine-containing lithium manganese oxide spinel

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

    Research output: Contribution to journalArticlepeer-review

    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 Sept 18

    Bibliographical note

    Funding Information:
    We gratefully acknowledge financial support for this work by the Ministry of Education and Human Resources Development (BK-21) and the Korea Science and Engineering Foundation (KOSEF R01-2001-00045).

    Copyright:
    Copyright 2008 Elsevier B.V., All rights reserved.

    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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