Real space mapping of Li-ion transport in amorphous Si anodes with nanometer resolution

Nina Balke, Stephen Jesse, Yoongu Kim, Leslie Adamczyk, Alexander Tselev, Ilia N. Ivanov, Nancy J. Dudney, Sergei V. Kalinin

    Research output: Contribution to journalArticlepeer-review

    227 Scopus citations

    Abstract

    The electrical bias driven Li-ion motion in silicon anode materials in thin film battery heterostructures is investigated using electrochemical strain microscopy (ESM), which is a newly developed scanning probe microscopy based characterization method. ESM utilizes the intrinsic link between bias-controlled Li-ion concentration and molar volume of electrode materials, providing the capability for studies on the sub-20 nm scale, and allows the relationship between Li-ion flow and microstructure to be established. The evolution of Li-ion transport during the battery charging is directly observed.

    Original languageEnglish
    Pages (from-to)3420-3425
    Number of pages6
    JournalNano Letters
    Volume10
    Issue number9
    DOIs
    StatePublished - Sep 8 2010

    Keywords

    • Li-ion battery
    • scanning probe microscopy
    • thin films

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