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Application of Conducting Polymers Having Unusual Doping Properties for Energy Conversion

Research Project

Project/Area Number 11650845
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 InstitutionHiroshima University

Principal Investigator

KITANI Akira  Faculty of Engineering, Hiroshima University, Associate Professor, 工学部, 助教授 (70034395)

Co-Investigator(Kenkyū-buntansha) ITO Sotaro  Faculty of Engineering, Hiroshima University, Professor, 工学部, 教授 (90034404)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsConducting polymer / n-Type doping / Self-doping / Secondary battery / Fuel cell / 導電性稿分子
Research Abstract

In the present study, following three types of polymer electrodes were prepared electrochemically to develop new conductive polymer electrodes having unusual doping properties for energy conversion. These electrodes are applicable to secondary batteries and direct methanol fuel cells.
1. Properties of polyanilines having oxyethylene units (negative electrode of secondary battery) Electrochemical behaviors and properties of poly-(N-3, 6, 9-trioxadecyl)-aniline (poly-NTDAn) were also studied and compared with those of Poly-N-(3, 6-dioxaheptyl) aniline . The reversibility of electrochemical n-type doping-undoping reaction was much improved for poly-NTDAn, which has three oxyethylene units at N position. The molecular weight of poly-NTDAn was high (1,100,000), and the conductivity value was 0.9 mS/cm.
2. Properties of self-doped polyaniline composites (positive electrode of secondary battery) Electroactive poly-aniline-2, 5-disulfonic acid (poly-ADSA) was used as a bulky dopant of polyaniline (PAn) to develop highly electroactive polymer electrodes. PAn/poly-ADSA composite was prepared by dopant exchange. The redox charge of resulting composite increased up to 120% of the value of untreated PAn by the electrochemical doping of electroactive poly-ADSA.The specific capacity was determined to be 98 Ah/kg, which is comparable to that of PAn.
3. Properties of Pt/polyaniline composite electrodes (negative electrode of fuel cell) Electrocatalytic oxidation of methanol on Pt modified polyaniline electrodes was investigated to develop highly active composite electrodes for direct methanol fuel cells. Pt/polyaniline modified carbon electrodes showed higher catalytic activity towards oxidation of methanol than Pt deposited carbon electrodes. The effect of kind of protonic acids used in the electrochemical preparation of polyaniline on the oxidation current of methanol was studied. Largest oxidation current was obtained for polyanilines prepared in sulfuric acid solutions.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report

Research Products

(23 results)

All Other

All Publications (23 results)

  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline / Polyaniline-sulfonic Acid Composites"Synth.Metals. 102. 1171-1172 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Properties of Polyanilies Containing Oxyethylene Units"Synth.Metals. 102. 1173 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline / Poly (aniline-2,5-disulfonic Acid) Composites"Electrochemistry. 67(12). 1262-1263 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrocatalytic Oxidation of Methanol on Platinum Modified Polyaniline Electrodes"Synth.Metals. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrochemical Preparation and Properties of Polyanilines Containing Oxyethylene Units"Abstr.11th Australasian Electrochem.Conf.. 122-123 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrocatalytic Oxidation of Methanol at Pt Particles Dispersed Polyaniline Electrodes"Abstr.Int.Symp.Electrochem.Ordered Interfaces. 45 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline/Polyaniline-sulfonic Acid Composites"Synth.Metals. 102. 1171-1172 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Properties of Polyanilines Containing Oxyethylene Units"Synth.Metals. 102. 1173 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline/Poly (aniline-2, 5-disulfonic Acid) Composites"Electrochemistry. 67(12). 1262-1263 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrocatalytic Oxidation of Methanol on Platinum Modified Polyaniline Electrodes"Synth.Metals. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrochemical Preparation and Properties of Polyanilines Containing Oxyethylene Units"Abstr.11th Australasian Electrochem.Conf.. 122-123 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani: "Electrocatalytic Oxidation of Methanol at Pt Particles Dispersed Polyaniline Electrodes"Abstr.Int.Symp.Electrochem.Ordered Interfaces. 45. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akira Kitani : "Electrocatalytic Oxidation of Methanol on Platinum Modified Polyaniline Electrodes"Synth.Metals. (in press). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Akira Kitani : "Electrochemical Preparation and Properties of Polyanilines Containing Oxyethylene Units"Abstr.11th Australasian Electrochem.Conf.. 122-123 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Akira Kitani: "Electrocatalytic Oxidation of Methanol at Pt Particles Dispersed Polyaniline Electrodes"Abstr.Int.Symp.Electrochem.Ordered Interfaces. 45 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Akira kitani: "Electrosynthesis of Self-doped Polyanilines from Sulfonated Aniline Derivatives "Abstr.2000 Int.Symp.Org.Reac.Tokyo. 262-263 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 木谷晧: "ポリアニリン/ポリアニリンスルホン酸複合体の電気化学的挙動"電気化学会第67回大会講演要旨集. 3M21 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline/Polyaniline-sulfonic Acid Composites"Synth.Metals. 102. 1171-1172 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Akira Kitani: "Properties of Polyanilines Containing Oxyethylene Units"Synth.Metals. 102. 1173 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Akira Kitani: "Electrochemical Behaviors of Polyaniline/Poly(aniline-2,5-disulfonic Acid)Composites"Electrochemistry. 67(12). 1262-1263 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Akira Kitani: "Electrosynthesis and Properties of Self-doped Poly(aniline-2,5-disulfonic Acid)"Ext.Abstr.50th Int.Soc.Electrochem.Meeting. 3B37 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Akira Kitani: "Electrochemical,Optical and Electrical Properties Polyanilines Containing Oxyethylene Units"Ext.Abstr.196th ECS and 1999 ECSJ Joint Int.Meeting. 2217 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 木谷 晧: "アニリンジスルホン酸を用いる自己ドープ型ポリアニリンの電解合成と性質"日本化学会第77秋季年会講演予稿集. 22 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-03-31   Modified: 2016-04-21  

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