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2001 Fiscal Year Final Research Report Summary

RESEARCH ON CERAMICS BATTERIES

Research Project

Project/Area Number 10555311
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 無機工業化学
Research InstitutionKOBE UNIVERSITY

Principal Investigator

KANNO Ryoji  KOBE UNIVERSITY, Science, Associate Professor, 理学部, 助教授 (90135426)

Co-Investigator(Kenkyū-buntansha) TAKEDA Yasuo  Mie University, Professor, 工学部, 教授 (60093051)
TAKANO Mikio  Kyoto University, Professor, 化学研究所, 教授 (70068138)
KAWAMOTO Yoji  KOBE UNIVERSITY, Science, Professor, 理学部, 教授 (00030776)
NITTA Yoshiaki  Matsushita electric co., Leader, 電池開発センター, 室長
NAKAMURA Tatsuya  Toda Kogyo ind., Resercher, 創造本部, 主任研究員
Project Period (FY) 1998 – 2000
KeywordsTHIO-LISICON / LITHIUM ION CONDUCTOR / LITHIUM SECONDARY BATTERY / ALL SOLID STATE CELL / 超イオン導電体
Research Abstract

The new crystalline material-family, the 'thio-LISICON' (Lithium SuperIonic CONductor), was found in the Li_2S-GeS_2-P_2S_s system. The solid solution at x = 0.75 in Li_<4-x>Ge_<1-2>P_2S_4 shows the highest conductivity of 2.2 x 10^<-3> Scm^<-1> at 25℃ amongst sintered ceramics, together with negligible electronic conductivity, high electrochemical stability, no reaction with lithium metal, and no phase transition up to 500℃. Its material-design concepts of changing constituent ions with various ionic radii, valence, and polarizability are studied.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] R.Kanno 他: "Synthesis of New Lithium Ionic Conductor, Thio-LISIOCON--Lithium Germanium Sulfide System"Solid State Ionics. 130(1-2). 97-103 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.Kanno 他: "The relationships between phase, structure and electrochemical properties for lithium manganese spinels"J.Power Sources. 81-82. 542-546 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.Kanno 他: "Synthesis and Structure of Lithium Manganese Oxide spinel, LiMn_2O_<4-δ>(0【less than or equal】δ【less than or equal】0.27)"J.Power Sources. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.K.B.Gover 他: "The role of nickel content on the structure and electrochemical properties of Li_x(Ni_yCo_<1-y>)O_2"J.Power Sources. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より

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Published: 2003-09-17  

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