High-rate performance of a bacterial iron-oxide electrode material for lithium-ion battery

Ryo Sakuma, Hideki Hashimoto, Genki Kobayashi, Tatsuo Fujii, Makoto Nakanishi, Ryoji Kanno, Mikio Takano, Jun Takada

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Lithium-ion discharge/charge properties of a nanometric amorphous iron-based oxide material of bacterial origin, L-BIOX, in a voltage range of 1.5-4.0 V were studied. X-ray absorption fine structure measurements confirmed that Fe3+ Fe2+ reactions dominate in this voltage range. Cycle characteristics with a capacity exceeding 70 mAh/g at a current rate of 1670 mA/g are considerably higher than those achieved by known simple iron-oxides such as α-Fe2O3.

Original languageEnglish
Pages (from-to)414-417
Number of pages4
JournalMaterials Letters
Volume139
DOIs
Publication statusPublished - Jan 15 2015

Keywords

  • Biogenous iron oxides
  • Energy storage and conversion
  • Iron-oxidizing bacteria

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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