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1998 Fiscal Year Final Research Report Summary

High performance gas diffusion electrode of polymer electrolyte membrane fuel cells prepared by plasma polymerization

Research Project

Project/Area Number 08555215
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 工業物理化学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

OGUMI Zempachi  Graduate School of Engineering Kyoto University Prof., 工学研究科, 教授 (60110764)

Co-Investigator(Kenkyū-buntansha) UCHIMOTO Yoshiharu  Graduate School of Energy Science Kyoto University Assoc.Prof., エネルギー科学研究科, 助教授 (50193909)
Project Period (FY) 1996 – 1998
Keywordsplasma polymerization / fuel cell / ion exchange membrane / gas diffusion electrode / fluorine
Research Abstract

Polymer electrolyte membrane fuel cells (PEMFC) have attracted much attention for use of batteries of electric vehicles. In PEMFC, gas diffusion electrodes have been used, and it is necessary to enhance the contact areas between electrode and electrolyte for the improvement of performance of PEMFC.In this work, we have aimed the development of high performance gas diffusion electrodes by plasma polymerization. Followings are the results of this work :
1) Thin cation exchanger films fixed with sulfonic acid groups were prepared by plasma polymerization followed by hydrolysis of sulfonyl halide groups using benzenesulfonyl fluoride and benzenesulfonyl chloride, as starting material. Plasma polymer that formed at 3.5 W by using benzenesulfonyl fluoride after hydrolysis exhibits a cation-exchange capacity of 1.3 meq g^<-1>, which is comparable to those of commercially available cation exchange membranes.
2) Perfluorinated polymer electrolytes have been prepared by using trifluoromethane sulfonic acid as ion exchange resources and octafluorocyclobutane as polymer bone. The resultant polymer electrolyte contains much fluorine atoms, and the ionic conductivity was determined to be in the order of 10^<-5> S / cm.
3) By introducing Ar gas and water, the ionic conductivity of the resultant plasma polymer electrolytes was enhanced to be in the order of 10 -4 S / cm. This is probably due to the dilution of fluorine radicals prepared in plasma.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] A.Tasaka et al.: "Preparation of Functionally Gradient Fluorocarbon Polymer Films by Plasma Polymerization of NF_3 and Propylene" J.Polym.Sic,, Part A : polym.Chem.34. 193-198 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Minoru Inaba et al.: "Hydrogen Oxidation on Partially Immersed Nafion^<【○!R】>-Coated Electrodes" J.Electroanal.Chem.417. 105-111 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jun Maruyama et al.: "Influence of Nafion^<【○!R】> Film on the Kinetics of Anodic Hydrogen Oxidation" J.Electroanal.Chem.447. 201-209 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jun Maruyama et al.: "Rotating Ring-Disk Electrode Study on the Cathodic Oxygen Reduction at Nafion^<【○!R】>-coated Gold Electrode" J.Electroanal.Chem.458. 175-182 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akimasa Tasaka, Akiko Komura, Yoshiharu Uchimoto, Minoru Inaba, and Zempachi Ogumi: "Preparation of Functionally Gradient Fluorocarbon Polymer Films by Plasma Polymerization of NF_3 and Propylene" J.Polym.Sci, , Part A : Polym.Chem.34. 193-198 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Minoru Inaba, Masaharu Uno, Jun Maruyama, Akimasa, Tasaka, Katsumi Katakura and Zempachi Ogumi: "Hydrogen Oxidation on Partially Immersed Nafion^<<encircledR>>-Coated Electrodes" J.Electroanal.Chem.417. 105-111 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Jun Maruyama, Minoru Inaba, Katsumi Katakura, Zempachi Ogumi, and Zen-ichiro Takehara: "Influence of NafionR Film on the Kinetics of Anodic Hydrogen Oxidation" J.Electroanal.Chem.447(1/2). 201-209 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Jun Maruyama, Minoru Inaba, and Zempachi Ogumi: "Rotating Ring-Disk Electrode Study on the Cathodic Oxygen Reduction at Nafion^<<encircledR>>-coated Gold Electrode" J.Electroanal.Chem.458(1/2). 175-182 (1998)

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

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Published: 1999-12-08  

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