Temperature dependent local structure of LiCoO2 nanoparticles determined by Co K-edge X-ray absorption fine structure

L. Maugeri, L. Simonelli, A. Iadecola, B. Joseph, M. Okubo, I. Honma, H. Wadati, T. Mizokawa, N. L. Saini

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    Temperature dependent Co K-edge extended X-ray absorption fine structure is used to investigate local disorder in LiCoO2 nanoparticles. We find that the nanostructuring has direct influence on the bondlength characteristics. The results reveal a substantial decrease in the force constant of Co-O bonds (the Co-O bonds becoming more flexible), while that for the Co-Co bonds showing hardly any change (or increases slightly) in LiCoO2 nanoparticles with respect to the bulk. Therefore, both random disorder and Co-O bondlength flexibility should be the factors to limit the battery characteristics of the LiCoO2 nanoparticles.

    Original languageEnglish
    Pages (from-to)272-276
    Number of pages5
    JournalJournal of Power Sources
    Volume229
    DOIs
    Publication statusPublished - 2013

    Keywords

    • LiCoO nanoparticles
    • Lithium-ion batteries
    • Local disorder
    • X-ray absorption spectroscopy

    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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