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Development for Three-Phase Fluidized Bed Fuel Cell System

Research Project

Project/Area Number 01850206
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 反応工学
Research InstitutionUniversity of Tokyo

Principal Investigator

YOSHIDA Kunio  University of Tokyo Dept. of Chem. Eng., Professor, 工学部, 教授 (70010808)

Co-Investigator(Kenkyū-buntansha) TSUTSUMI Atsushi  University of Tokyo Dept. of Chem. Eng., Lecturer, 工学部, 講師 (00188591)
山崎 量平  東京大学, 工学部, 助教授 (10023277)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥8,300,000 (Direct Cost: ¥8,300,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1990: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1989: ¥4,200,000 (Direct Cost: ¥4,200,000)
KeywordsAlkaline fuel cell / Fluidized-bed electrode / Three-phase fluidized bed / 三次元流動層電極 / 燃料電池 / 水素極特性 / 限界電流
Research Abstract

The conventional fuel cell design employs electrodes in the shape of plates, so that there is naturally a limit of current density. The structure of cell stuck is quite complex, and furthermore there is no scale-up merit. To overcome these disadvantages of conventional fuel cell systems, we applied a fluidized bed electrode to the fuel cell. The fluidized bed electrode has a larger electrode area per volume and can conveniently be scaled-up.
In this study, the performance of a fluidized-bed hydrogen electrode and a fluidized-bed oxygen electrode was investigated for an alkaline fuel cell. The effects of gas velocity, KOH concentration, type of electrode particles and size of collector electrode on the cell current were examined in the three-phase fluidized beds. In addition, the experiments were carried out to measure volumetric gas-liquid mass transfer coefficient.
In conclusion :
1) The fluidized-bed hydrogen electrode behaves nearly ideally. On the other hand, the fluidized-bad oxygen electrode does not behave ideally because of the catalytic decomposition of peroxyl ions.
2) The ohmic polarization is governed by the contact resistance between the collector electrode and the electrode particles.
3) The effects of particle size and solid concentration on mass transfer coefficients appeared differently in three types of reactors, which are classified by solid concentration profiles.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Tawatchai Charinpanitkul: "Gas-Liquid Mass Transfer in a Three-Phase Reactor." Proc.2nd Japanese/German Sympo.Bubble Columns. 201-206 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Atsushi Tsutsumi: ""Characteristics of Fluidized-Bed Electrode for Alkaline Fuel Cell"" AIChEJ.,. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Atshushi Tsutsumi: "Tomoko Suzuki and Kunio Yoshida Characteristics of Fluidized-Bed Electrode for Alkaline Fuel Cell" AIChE Annual Meeting, Los Angeles. 17-22. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tawatchai Charinpanitkul: "Atshushi Tsutsumi and Kunio Yoshida Mass Transfer in a Three-Phase Rractor" Proc. 2nd Japanese/German Sympo. Bubble Column. (Kyoto). 201 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tawatchai Charinpanitkul: "Gas-Liquid Mass Transfer in a Three-Phase Reactor." Proc.2nd Japanese/German Sympo.Bubble Columns. 201-206 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Atsushi Tsutsumi: "“Characteristics of Fluidized-Bed Electrode for Alkaline Fuel Cell"" AIChE J.,. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] A.Tsutsumi: "Characteristics of FluidizedーBed Electrode for Alkaline Fuel Cell" AIChE Symp.Ser.,. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Tawatchai Charinpanitkul: "GasーLiquid Mass Transfer in ThreeーPhase Reactors" 2nd Japanese/German Symp.“Bubble Column"'91 Kyoto. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 北原博幸: "管直管内気液=相流および気液固三相流のフロ-パタ-ン" 混相流. 3. 145-154 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2019-02-15  

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