• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Compact hydrogen reformer system utilizing microplasmas

Research Project

Project/Area Number 15360147
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionTokyo Institute of Technology

Principal Investigator

ISHII Shozo  Tokyo Institute of Technology, Graduate School of Engineering, Professor, 大学院・理工学研究科, 教授 (40016655)

Co-Investigator(Kenkyū-buntansha) MICHIBATA Hideo  Tokyo Electric Power Company R & D Center, Researcher, エネルギー・環境研究所, 主任研究員
IBUKA Shinji  Tokyo Institute of Technology, Graduate School of Engineering, Assistant Professor, 大学院・理工学研究科, 助手 (70262277)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥15,700,000 (Direct Cost: ¥15,700,000)
Fiscal Year 2004: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2003: ¥13,600,000 (Direct Cost: ¥13,600,000)
Keywordsreformer / microplasma / hydrogen / methane / portable electronic equipments / 水素生成 / メタン改質 / プラズマ化学 / メタン転換率 / 水素選択率 / 非平衡プラズマ / 大気圧プラズマ / 半導体パワーデバイス
Research Abstract

The aim of our research is to develop a compact hydrogen reformer for fuel cells supplying the electric power of portable electronic equipments. We proposed a methane conversion in microplasmas at atmospheric pressure. The discharge develops between the electrodes, one of which is a thin nozzle of methane flow with a diameter of 190μm. High efficiency decomposition is expected because methane is placed directly in the plasma region. The structure of counter electrode was mesh or plate. The frequency of the power supply was changed from 500Hz to 2kHz. Filamentary discharges developed at the same position of electrodes. With increasing the frequency or decreasing the methane flow-rate, the methane conversion increased. We obtained the maximum conversion of 38.5%. Solid-state carbon is deposited on the electrodes, which were bridged within a couple of minutes for high-frequency discharge over 2kHz. As a result, the discharge was interrupted. In comparison with mesh and plane electrodes, the methane conversion for the mesh electrodes was higher when the flow rate was high. The carbon deposition on the mesh electrode was suppressed because of high gas flow. Hydrogen yield increased and was 26.3% at the maximum when the methane conversion increased. Selectivity to hydrogen is approximately 30% that is independent on the methane conversion, methane flow rate, frequency of the power supply, and shape of the counter electrode. Methane discharge in saturated vapor was done to suppress the carbon deposition. Although the effect of vapor was evident, no appreciable improvement was obtained.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (24 results)

All 2005 2004 Other

All Journal Article (20 results) Publications (4 results)

  • [Journal Article] Atmospheric dc discharges with miniature gas flow as microplasma generation method2005

    • Author(s)
      Takuma Yokoyama
    • Journal Title

      Journal of Physics D : Applied Physics 38

      Pages: 1684-1689

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] メタンのマイクロプラズマ中水蒸気改質による水素生成2005

    • Author(s)
      角田 礼央
    • Journal Title

      平成17年電気学会全国大会講演論文集 1

      Pages: 194-194

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Discharge Characteristic Dependence on Electrodes in Microplasmas2005

    • Author(s)
      T.Yokoyama
    • Journal Title

      Plasma Science Symposium 2005/The 22^<nd> Symposium on Plasma Processing

      Pages: 269-270

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Generation and Control Techniques for Microplasmas2005

    • Author(s)
      Shozo Ishii
    • Journal Title

      Plasma Science Symposium 2005/The 22^<nd> Symposium on Plasma Processing

      Pages: 743-744

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Hydrogen production by steam reforming of methane utilizing microplasmas2005

    • Author(s)
      Reo Tsunoda
    • Journal Title

      2005 Annual Meeting Record IEE Japan

      Pages: 194-194

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Discharge Characteristic Dependence on Electrodes in Microplasmas2005

    • Author(s)
      T.Yokoyama
    • Journal Title

      Plasma Science Symposium 2005/The 22nd Symposium on Plasma Processing

      Pages: 269-270

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Generation and Control Techniques for Microplasmas2005

    • Author(s)
      Shozo Ishii
    • Journal Title

      Plasma Science Symposium 2005/The 22nd Symposium on Plasma Processing

      Pages: 743-744

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] メタンのマイクロプラズマ中水蒸気改質による水素生成2005

    • Author(s)
      角田礼央
    • Journal Title

      平成17年電気学会全国大会講演論文集 1

      Pages: 194-194

    • Related Report
      2004 Annual Research Report
  • [Journal Article] マイクロプラズマの生成と制御2005

    • Author(s)
      石井彰三
    • Journal Title

      プラズマ科学シンポジウム2005/第22回プラズマプロセシング研究会

    • Related Report
      2004 Annual Research Report
  • [Journal Article] マイクロギャップにおけるパルス絶縁破壊特性2004

    • Author(s)
      椎名 淳
    • Journal Title

      電気学会基礎・材料・共通部門大会講演論文集

      Pages: 300-300

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 微小電極間における放電特性2004

    • Author(s)
      椎名 淳
    • Journal Title

      電気学会プラズマ研究会資料 PST-04-10

      Pages: 19-24

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 細管からのガス流中の放電を用いたマイクロプラズマ生成2004

    • Author(s)
      横山 拓馬
    • Journal Title

      平成16年電気学会全国大会講演論文集 1

      Pages: 231-231

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 微小電極間における絶縁破壊特性2004

    • Author(s)
      角田 礼央
    • Journal Title

      平成16年電気学会全国大会講演論文集 1

      Pages: 228-228

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] メタンガス流を用いたマイクロプラズマによる水素生成2004

    • Author(s)
      角田 礼央
    • Journal Title

      電気学会プラズマ研究会資料 PST-04-96

      Pages: 1-5

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Breakdown characteristics of micro-gap under pulsed applied Voltage2004

    • Author(s)
      Jun Shiina
    • Journal Title

      Proc.of 2004 Annual Conf.of Fundamentals and Materials Society IEE Japan

      Pages: 300-300

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Discharge characteristics of micro-gap electrodes2004

    • Author(s)
      Jun Shiina
    • Journal Title

      The Papers of Technical Meeting on Plasma Science and Technology, IEE Japan

      Pages: 19-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Microplasma generation utilizing electrical discharge in gas flow from small nozzle2004

    • Author(s)
      Takuma Yokoyama
    • Journal Title

      2004 Annual Meeting Record IEE Japan

      Pages: 231-231

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Gas breakdowns characteristics of maicro-gap electrodes2004

    • Author(s)
      Reo Tsunoda
    • Journal Title

      2004 Annual Meeting Record IEE Japan

      Pages: 228-228

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Hydrogen generation utilizing microplasma in methane gas flow2004

    • Author(s)
      Reo Tsunoda
    • Journal Title

      The Papers of Technical Meeting on Plasma Science and Technology, IEE Japan

      Pages: 1-5

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] メタンガス流を用いたマイクロプラズマによる水素生成2004

    • Author(s)
      角田礼央
    • Journal Title

      電気学会研究会資料 PST-04-96

      Pages: 1-5

    • Related Report
      2004 Annual Research Report
  • [Publications] 椎名淳: "微小電極間における放電特性"電気学会プラズマ研究会. PST-04-10. 19-24 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 横山拓馬: "細管からのガス流中の放電を用いたマイクロプラズマ生成"平成16年電気学会全国大会講演論文集. 1. 231 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 椎名淳: "マイクロギャップにおけるパルス絶縁破壊特性"電気学会基礎・材料・共通部門大会講演論文集. 1. 300 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 角田礼央: "微小電極間における絶縁破壊特性"平成16年電気学会全国大会講演論文集. 1. 228 (2004)

    • Related Report
      2003 Annual Research Report

URL: 

Published: 2003-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi