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Elucidation of new cathode materials using mechanically nano-dispersed and super critical processing techniques

Research Project

Project/Area Number 25630264
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Physical properties of metals/Metal-base materials
Research InstitutionKyoto University

Principal Investigator

FUKUNAGA TOSHIHARU  京都大学, 原子炉実験所, 教授 (60142072)

Co-Investigator(Kenkyū-buntansha) MORI Kazuhiro  京都大学, 原子炉実験所, 准教授 (40362412)
ONODERA Yohei  京都大学, 原子炉実験所, 助教 (20531031)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsナノ分散 / 負極材料 / 電池特性 / X線回折 / 中性子回折 / 原子構造 / リチウム二次電池 / イオン伝導 / 中性子散乱 / X線回折 / 非弾性散乱 / PDF解析
Outline of Final Research Achievements

In this study, we are planning to create a new cathode material with high capacity, high output and high safety for solid-state lithium-ion batteries. Porous cathode materials with dispersed nano-silicon particles have been tried to synthesize by mechanical milling and super-critical processing techniques. The nano-silicon-dispersed materials produced by mechanical milling were investigated to clarify the size and segregation of the silicon particles by neutron small scattering method. The production of porous graphite materials has been successful by using the super-critical processing technique with CO2 gas. The visualization of conduction pathways and stable site of lithium ions in the structure was succeeded by combining reverse Monte Carlo (RMC) modeling and the bond valence sum (BVS) method based on the synchrotron X-ray and time-of-flight neutron diffraction data.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (11 results)

All 2014 2013 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (7 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Visualization of conduction pathways in a lanthanum lithium titanate superionic conductor synthesized by rapid cooling2014

    • Author(s)
      K. Mori, S. Tomihira, K. Iwase, and T. Fukunaga
    • Journal Title

      Solid State Ionics

      Volume: 268 Pages: 76-81

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Structural origin of ionic conductivity for Li7P3S11 metastable crystal by neutron and X-ray diffrcation2014

    • Author(s)
      Y. Onodera, K. Mori, T. Otomo, H. Arai, Y. Uchimoto, Z. Ogumi, and T. Fukunaga
    • Journal Title

      J. Phys.: Conf. Ser.

      Volume: 502

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Visualization of conduction pathways in lithium superionic conductors: Li2S-P2S5 glasses and Li7P3S11 glass-ceramic2013

    • Author(s)
      K. Mori, T. Ichida, K. Iwase, T. Otomo, S. Kohara, H. Arai, Y. Uchimoto, Z. Ogumi, Y. Onodera, and T. Fukunaga
    • Journal Title

      Chem. Phys. Lett.

      Volume: 584 Pages: 113-118

    • DOI

      10.1016/j.cplett.2013.08.016

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Li2S-P2S5系超イオン伝導ガラスのリチウムイオン伝導経路評価2014

    • Author(s)
      延壽寺啓悟、森一広、福永俊晴
    • Organizer
      日本中性子科学会第14回年会
    • Place of Presentation
      北海道立道民活動センター( 札幌市 )
    • Year and Date
      2014-12-11 – 2014-12-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 中性子回折によるLi-Ge-P-S系ガラス/結晶のイオン伝導空間解析2014

    • Author(s)
      笠井拓矢、小野寺陽平、森一広、福永俊晴
    • Organizer
      日本中性子科学会第14回年会
    • Place of Presentation
      北海道立道民活動センター( 札幌市 )
    • Year and Date
      2014-12-11 – 2014-12-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] Na-P-S系超イオン伝導体におけるイオン伝導空間の解析2014

    • Author(s)
      小野寺陽平、中島広志、森一広、大友季哉、福永俊晴
    • Organizer
      日本金属学会2014年秋期講演大会
    • Place of Presentation
      名古屋大学( 名古屋市 )
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Li2S-P2S5系超イオン伝導ガラスのリチウムイオン分布と可動経路2014

    • Author(s)
      延壽寺啓悟、森一広、市田智晴、小野寺陽平、福永俊晴
    • Organizer
      日本金属学会2014年秋期講演大会
    • Place of Presentation
      名古屋大学( 名古屋市 )
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] 非晶質系固体電解質のリチウムイオン伝導経路の視覚化2014

    • Author(s)
      森一広、市田智晴、小野寺陽平、福永俊晴
    • Organizer
      日本セラミックス協会第27回秋季シンポジウム
    • Place of Presentation
      鹿児島大学( 鹿児島市 )
    • Year and Date
      2014-09-09 – 2014-09-11
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Li2S-P2S5系超イオン伝導ガラスのリチウムイオン可動空間の視覚化2013

    • Author(s)
      森一広、市田智晴、冨平昌吾、小野寺陽平、福永俊晴
    • Organizer
      日本中性子科学会第13回年会
    • Place of Presentation
      さわやかちば県民プラザ
    • Related Report
      2013 Research-status Report
  • [Presentation] 急冷処理を施したLi3xLa2/3-xTiO3の中距離構造およびLiイオン可動空間の予測2013

    • Author(s)
      冨平昌吾、森一広、福永俊晴、Joan Siewenie
    • Organizer
      日本金属学会 2013年秋期講演大会
    • Place of Presentation
      金沢大学
    • Related Report
      2013 Research-status Report
  • [Remarks] 福永研究室

    • URL

      http://www.rri.kyoto-u.ac.jp/FukunagaLab/

    • Related Report
      2014 Annual Research Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

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