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Preparation of Dendrimer-Sulfur Composites and their Application to Positive Active Material for Lithium Secondary Battery

Research Project

Project/Area Number 13680579
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field エネルギー学一般
Research InstitutionYamaguchi University

Principal Investigator

TSUTSUMI Hiromori  Yamaguchi University Department of Applied Chemistry and Chemical Engineering Associate Professor, 工学部, 助教授 (90211383)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsDisulfide / Positive Active Material / Dendrimer / Organosulfur compound / Lithium / Secondary Battery / Lipoid Acid / リポ酸 / リボ酸 / ジスルフイド / リチウムニ次電池 / 硫黄 / 充放電
Research Abstract

A higher-power and thinner secondary battery will reduce the weight of potable electrical equipment, such as a cellular telephone and portable computer. Organosulfur compounds, such as 2, 5-dimercapto-1, 3, 4-thiadiazole (DMcT), which have polymerizable sulfur groups, are one of the most promising candidates of positive active materials for a high-energy storage secondary battery. We prepared new-type disulfide polymers that have a hyperbranch backbone and cyclic disulfide structures at the terminal of each branches. Their electrochemical behavior in an organic electrolyte and possibility as positive active material were investigated. Branched polyesters with cyclic disulfide structure were prepared from branched polyester and lipoic acid which has cyclic disulfide moiety. The structure of the polymers was identified from the results of FTIR, NMR, and MALDI-TOFF MASS spectroscopy. The electrodes with the hyperbranch polymers in the organic electrolyte solution (for example, the electrolyte solution form propylene carbonate, 1, 2-dimethoxyethane, and LiClO_4) showed electrochemical responses based on the cyclic disulfide. The redox potential and behavior of the disulfide bonds in the hyperbranch polymer depended on its branched structure. The capacity of the test cell with the positive electrode based on the compound was 27.9 - 54.8 Ah kg^<-1>.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] Hiromori Tsutsumi 他3名: "Preparation of Hyperbranch Polymer with Cyclic Disulfide and its Application to Positive Active Material of Secondary Battery"Transactions of the Materials Research Society of Japan. (掲載予定)(未定). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 堤 宏守(分担執筆): "次世代型リチウム二次電池"株式会社 エヌ・ティー・エス. 457 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiromori Tsutsumi, Tomoyuki akagawa, Kenjiro Onimura, Tsutomu Oishi: "Prepration of Hyperbranch Polymer with Cyclic Disulfide and its Application to Positive Active Material of Secondary Battery"Transactions of the Material Research Society of Japan. (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiromori Tsutsumi, Tomoyuki Nakagawa, Kenjiro Onimura, Tsutomu Oishi: "Preparation of Hyperbranch Polymer with Cyclic Disulfide and its Application to Positive Active Material of Secondary Batter"Abstract of the 14th Symposium of the Materials Research Society of Japan. 152. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiromori Tsutsumi: "Lithium Secondary Batteries for Next Generation in: Gel Electrolytes for Lithium Batteries"N.T.S.. 239-257

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiromori Tsutsumi 他3名: "Preparation of Hyperbranch Polymer with Cyclic Disulfide and its Application to Positive Active Material of Secondary Battery"Transactions of the Materials Research Society of Japan. (掲載予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 堤 宏守(分担執筆): "次世代型リチウム二次電池"株式会社エヌ・ティー・エス(未定). (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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