Local structural change in Li2FeSiO4 polyanion cathode material during initial cycling

Titus Masese, Yuki Orikasa, Takuya Mori, Kentaro Yamamoto, Toshiaki Ina, Taketoshi Minato, Koji Nakanishi, Toshiaki Ohta, Cédric Tassel, Yoji Kobayashi, Hiroshi Kageyama, Hajime Arai, Zempachi Ogumi, Yoshiharu Uchimoto

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

To elucidate the Li+ extraction and insertion mechanism for Li2FeSiO4 nanoparticles, at the atomic scale, X-ray absorption spectroscopy (XAS) measurements at Fe and Si K-edges were performed. Fe K-edge XAS spectra suggest irreversible changes occurring in the local and electronic environment of iron which can be attributable to the characteristic shift in potential plateau during initial cycling of Li 2 - xFeSiO4 system. While the local environment around Fe atoms significantly changes upon initial cycling, the local SiO environment is mostly maintained. © 2013 Elsevier B.V.
Original languageEnglish (US)
Pages (from-to)110-114
Number of pages5
JournalSolid State Ionics
Volume262
DOIs
StatePublished - Sep 1 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

ASJC Scopus subject areas

  • General Materials Science
  • General Chemistry
  • Condensed Matter Physics

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