In situ Mössbauer analysis of bacterial iron-oxide nano-particles for lithium-ion battery

Ryo Sakuma, Hideki Hashimoto, Tatsuo Fujii, Jun Takada, Naoaki Hayashi, Mikio Takano

Research output: Contribution to journalArticlepeer-review

Abstract

Nanometric amorphous iron-based oxides of bacterial origin show a great potential as an Fe3+/Fe0 conversion anode material for lithium-ion batteries. By means of in situ Mössbauer spectroscopy, chemical states of Fe ions were examined under the discharge-charge process of the bacterial iron-oxide electrode in a lithium-ion half-cell. As for the first discharge process, the successive reduction of Fe3+ → Fe2+ → Fe0 occurred in the electrode as a function of the cell voltage. While on the charge process, Fe0 in the electrode was oxidized directly to Fe3+ without going through Fe2+.

Original languageEnglish
Article number80
JournalHyperfine Interactions
Volume240
Issue number1
DOIs
Publication statusPublished - Dec 1 2019

Keywords

  • Biogenous iron oxides
  • Conversion electrode
  • Li-ion battery
  • Mössbauer spectroscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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