Study on nanometric amorphous iron oxide of bacterial origin as Li-ion battery cathode

2013 Fiscal Year Final Research Report

• Project/Area Number: 23360309
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Okayama University
• Principal Investigator: TAKADA Jun 岡山大学, 自然科学研究科, 教授 (60093259)
• Co-Investigator(Kenkyū-buntansha): FUJII Tatsuo 岡山大学, 大学院・自然科学研究科, 教授 (10222259) ; NAKANISHI Makoto 岡山大学, 大学院・自然科学研究科, 助教 (10284085) ; KUSANO Yoshihiro 倉敷技術科学大学, 芸術学部, 教授 (40279039) ; KANNO Ryouji 東京工業大学, 総合理工学研究科(研究院), 教授 (90135426)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Keywords: ナノ酸化鉄 / 微生物由来 / Liイオン二次電池 / 正極材 / アモルファス / 充放電容量 / サイクル特性 / 充放電機構

Research Abstract

We studied the discharge-charge properties of Li+ ions of nanometric amorphous iron oxide of bacterial origin for use as Li-ion battery cathode. This material was found to have the unique nanostructure. The iron oxide showed excellent cycle characteristics in a voltage range of 1.5-4.0 V at high current rate. X-ray absorption fine structure measurement revealed that the Fe3+ Fe2+ reaction is predominant in these discharge-charge processes.

Research Products

• [Journal Article] Initial parallel arrangement of extracellular fibrils holds a key for sheath frame construction by Leptothrix sp. strain OUMS1 (2013)
  • Author(s): H. Ishihara, T. Suzuki, H. Hashimoto, H. Kunoh, and J. Takada
  • Journal Title: Minerals Volume: 3 Pages: 73-81
  • Peer Reviewed
• [Journal Article] Amorphous structure of iron oxide of bacterial origin (2012)
  • Author(s): H. Hashimoto, T. Fujii, S. Kohara, H. Asaoka, Y. Kusano, Y. Ikeda, M. Nakanishi, Y. Benino, T. Nanba, J. Takada
  • Journal Title: Materials Chemistry and Physics Volume: vol.137 Pages: 571-575
  • DOI: 10.1016/j.matchemphys.2012.10.002
  • Peer Reviewed
• [Journal Article] Structural and spatial associations between Fe, O, and C in network structure of Leptothrix ochracea sheath surface (2011)
  • Author(s): T. Suzuki, H. Hashimoto, H. Ishihara, T. Kasai, H. Kunoh and J. Takada
  • Journal Title: Applied and Environmental Microbiology Volume: 77(21) Pages: 7873-7875
  • Peer Reviewed
• [Presentation] Characterization of Iron Oxide Microtubule Consisting of Amorphous Nanoparticles Produced by Iron Oxidizing Bacteria, Leptothrix ochracea (2014)
  • Author(s): R. Sakuma, H. Hashimoto, Y. Kusano, Y. Ikeda, M. Nakanishi, T. Fujii, M. Takano, J. Takada
  • Organizer: Euro Bio-inspired Materials
  • Place of Presentation: Kongresshotel Potsdam, Germany
  • Year and Date: 20140318-21
• [Presentation] Structural analysis of amorphous iron oxide produced by an iron-oxidizing bacterium, Leptothrix ochracea (2013)
  • Author(s): H. Hashimoto, T. Fujii, Y. Benino, T. Nanba, M. Nakanishi, J. Takada, S. Kohara, Y. Kusano, Y. Ikeda
  • Organizer: Light and Particle Beams in Materials Science 2013
  • Place of Presentation: Tsukuba, Japana
  • Year and Date: 20130829-31
• [Presentation] Characterization of Microtubule Material Consisting of Iron Oxide Nanoparticle Produced by Bacteria (2013)
  • Author(s): R. Sakuma, H. Hashimoto, H. Asaoka, Y. Kusano, H. Kunoh, Y. Ikeda, M. Seno, M. Nakanishi, T. Fujii, M. Takano, J. Takada
  • Organizer: The 11th International Conference on Ferrites (ICF11)
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 20130415-19
• [Presentation] 古くて新しい酸化鉄材料の新展開-備中吹屋ベンガラ, 備前焼緋襷模様, そして微生物が作る酸化鉄- (2013)
  • Author(s): 高田潤
  • Organizer: 日本機械学会2013年度年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2013-09-10
  • Invited
• [Book] Pan Stanford Publishing, Handbook of Metal Biotechnology : Application for Environmental Conservation and Sustainability(eds M. Ike, M. Yamashita, & S. Soda) (2012)
  • Author(s): J. Takada and H. Hashimoto
  • Total Pages: 139-148
• [Remarks]
  • URL: http://achem.okayama-u.ac.jp/iml/takadalab/index.html
• [Patent(Industrial Property Rights)] 正極活性物質およびその利用 (2012)
  • Inventor(s): 高田潤, 藤井達生, 中西真
  • Industrial Property Rights Holder: 岡山大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特許第5082095号
  • Acquisition Date: 2012-09-14