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Investigation of cation-exchanged vanadium pentoxide xerogels as the cathode materials for lithium rechargeable battery

Research Project

Project/Area Number 12650816
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 工業物理化学
Research InstitutionKeio University

Principal Investigator

MIURA Takashi  Faculty of Science and Technology, Department of Applied Chemistry, Keio University, Professor, 理工学部, 教授 (50051917)

Co-Investigator(Kenkyū-buntansha) KATAYAMA Yasushi  Faculty of Science and Technology, Department of Applied Chemistry, Keio University, Assistant Professor, 理工学部, 専任講師 (50286639)
岸 富也  慶應義塾大学, 理工学部, 教授 (50051412)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordsvanadium pentoxide / xerogel / cation-exchange / sodium / calcium / lanthanum / rechargeable lithium battery
Research Abstract

Cation-exchanged vanadium pentoxide xerogels (VXG) have been prepared and investigated as the cathode materials for rechargeable lithium battery. The protons included in original VXG could be exchanged to sodium (Na^+), calcium (Ca^<2+>) and lanthanum (La^<3+>). The interlayer distances of these cation-exchanged VXG's were larger than that of original VXG. Removal of water molecules in the cation-exchanged VXG's resulted in shrinkage of the interlayer distances. The interlayer distances of the dehydrated cation-exchanged VXG's were 〜0.89 nm since the ionic radii of Na^+, Ca^<2+> and La^<3+> are close to each other.
Thin film electrodes of the cation-exchanged VXG's were prepared to perform the electrochemical insertion of lithium. The extent of lithium inserted electrochemically into the cation-exchanged VXG's was larger than that for original VXG, probably due to the enlargement of the interlayer distance, which may enhance the diffusion of lithium in VXG. The largest extent of lithium was observed for La-exchenaged VXG since the number of lithium accommodating sites was the largest in other cation-exchanged VXG's.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] Mayumi Kamata, Gaku Oriji, Yasushi Katayama, Takashi Miura, Tomiya Kishi: "Lithium insertion behavior of ε-Cu_<0.9>V_2O_5"Solid State Ionics. 146. 95-100 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mayumi Kamata, Gaku Oriji, Yasushi Katamaya, Takashi Miura, and Tomiya Kishi: "Lithium insertion behavior of ε-Cu_<0.9>V_2O_5"Solid State Ionics. 146. 95-100 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mayumi Kamata, Gaku Oriji, Yasushi Katamaya, Takashi Miura, Tomiya Kishi: "Lithium insertion behavior of ε-Cu_<0.9>V_2O_5"Solid State Ionics. 146. 95-100 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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