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Elucidation of the electrolyte volatile phenomenon of MCFC by the visualization technique

Research Project

Project/Area Number 18560217
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionOsaka Prefectural College of Technology

Principal Investigator

SUGIURA Kimihiko  Osaka Prefectural College of Technology, Dept. of Industrial Systems Engineering Mechanical Systems Course, Associate Professor (00249814)

Co-Investigator(Kenkyū-buntansha) TANIMOTO Kazumi  National Institutes of Advanced Industrial Science and Technology, Kansai, Section Sub-leader (60357473)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,950,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2006: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsFuel Cell / New Energy / Hydrougn / General Energy
Research Abstract

Volatilization of molten salt is one of the factors to control the performance of Molten Carbonate Fuel Cells (MCFC). The power of MCFC deteriorates for which the long time operation of MCFC causes the depletion of the electrolyte and this electrolyte volatile matter blocks exhaust pipe. However, most researchers are not interested in this problem in spite of serious problem. One of the reasons is that it is difficult to analyze it because the carbonate is strong alkalinity. Therefore, we proposed the method by which an electrolyte volatile phenomenon in the cell can be observed by a non-contact image measurement technique. We use MCFC single cell's frame which has an observation window and an irradiation window. As a result, we elucidate the volatile phenomenon of (Li+K)/CO_3. Although the volatile matters of (Li+K)/CO_3 in anode are produced with a cellular reaction, (Li+K)/CO_3 in cathode is hardly volatiled with cell reaction. Moreover, we elucidate the electrolyte volatile phenomenon of (Li+Na)/CO_3. Although the volatile matter with cell reaction cannot be observed, the volatile matter which does not depend on the cell reaction was sometimes confirmed. Generally, (Li+Na)/CO_3 electrolyte is hardly volatile more than (Li+K)/CO_3 electrolyte. We confirmed the advantage of (Li+Na)/CO_3 electrolyte by observing the inside cell by a non-contact image measurement technique under the cell operating condition. However, a large amount of electrolytes that originated in the leakage from the wet seal part are discharged beginning immediately after operation and lasting until about one week later on the Li/Na electrolyte. Therefore, because the Li/Na electrolyte hardly permeates into the pores of an electrode, a poor assembly accuracy of the gap between an electrode and a separator, an overfilling of electrolyte and a large flow-rate immediately after start-up should be avoided.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (8 results)

All 2008 2007 2006

All Journal Article (6 results) (of which Peer Reviewed: 2 results) Presentation (2 results)

  • [Journal Article] Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC2008

    • Author(s)
      K.Sugiura, M.Soga, M.Yamauchi, K.Tanimoto
    • Journal Title

      ECS Transactions-2007 Fuel Cell Seminar & Exposition Volume12,issue1

      Pages: 355-361

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC2008

    • Author(s)
      K. Sugiura, M. Saga, M. Yamauchi, K. Tanimoto
    • Journal Title

      ECS Transactions-2007 Fuel Cell Seminar & Exposition Volume12, Issue1

      Pages: 355-361

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC2008

    • Author(s)
      K. Sugiura, M. Soga, M. Yamauchi, K. Tanimoto
    • Journal Title

      ECS Transactions-2007 Fuel Cell Seminar & Exposition Volume12(掲載決定)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison between volatile phenomenon of(Li+Na)/CO_3 and volatile phenomenon of(Li+K)/CO_3 by visualization technique in MCFC2006

    • Author(s)
      T.Yodo, K.Sugiura, M.Yamauchi, K.Tanimoto
    • Journal Title

      Proceedings of Fuel Cells Science and Technology in Italy

    • Related Report
      2006 Annual Research Report
  • [Journal Article] MCFCの電解質揮発現象のその場観察2006

    • Author(s)
      谷本一美, 杉浦公彦, 山内慎
    • Journal Title

      第13回燃料電池シンポジウム講演論文集

      Pages: 219-222

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Visualization of Electrolyte Volatile Phenomenon IN DIR-MCFC2006

    • Author(s)
      K.Sugiura, T.Yodo, M.yamauchi, K.Tanimoto
    • Journal Title

      Journal of Power Sources 157

      Pages: 739-744

    • Related Report
      2006 Annual Research Report
  • [Presentation] Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC -An electrolyte leakage from a wet seal part by visualization technique-2007

    • Author(s)
      K. Sugiura, M. Soga, M. Yamauchi, K. Tanimoto
    • Organizer
      2007 Fuel Cell Seminar Antonio
    • Place of Presentation
      Samn Antonio
    • Year and Date
      2007-10-19
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC-An electrolyte leakage from a wet seal part by visualization technique-2007

    • Author(s)
      K.Sugiura, M.Soga, M.Yamauchi, K.Tanimoto
    • Organizer
      Fuel Cell Seminar 2007
    • Place of Presentation
      San Antonio in USA
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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