Effects of nanostructuring on the bond strength and disorder in V2O5 cathode material for rechargeable ion-batteries

Wojciech Olszewski, Irene Isturiz, Carlo Marini, Marta Avila, Masashi Okubo, Huiqiao Li, Haoshen Zhou, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli

    Research output: Contribution to journalArticle

    Abstract

    We have investigated the nanostructuring effects on the local structure of V2O5 cathode material by means of temperature dependent V K-edge X-ray absorption fine structure measurements. We have found that the nanostructuring largely affects V-O and V-V bond characteristics with a general softening of the local V-O and V-V bonds. The obtained bond strengths correlate with the specific capacity shown by the different systems, with higher capacity corresponding to softer atomic pairs. The present study suggests the key role of local atomic displacements in the diffusion and storage of ions in cathodes for batteries, providing important information for designing new functional materials.

    Original languageEnglish
    Pages (from-to)15288-15292
    Number of pages5
    JournalPhysical Chemistry Chemical Physics
    Volume20
    Issue number22
    DOIs
    Publication statusPublished - 2018 Jan 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Physical and Theoretical Chemistry

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    Olszewski, W., Isturiz, I., Marini, C., Avila, M., Okubo, M., Li, H., Zhou, H., Mizokawa, T., Saini, N. L., & Simonelli, L. (2018). Effects of nanostructuring on the bond strength and disorder in V2O5 cathode material for rechargeable ion-batteries. Physical Chemistry Chemical Physics, 20(22), 15288-15292. https://doi.org/10.1039/c8cp00716k