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Isotope Effects of Hydrogen Ion Transport in SrCeO_3(+Y_2O_3) and its Applications

Research Project

Project/Area Number 63550490
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 金属精錬・金属化学
Research InstitutionNagoya Institute of Technology, Faculty of Engineering

Principal Investigator

FUKATSU Norihiko  Nagoya Inst. Tech., Faculty of Eng., Associate Professor, 工学部, 助教授 (80029355)

Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1989: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1988: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordssolid electrolyte / proton conductor / solid electrochemistry / isotope effect / heavy water / isotope separation / high temperature water electrolysis
Research Abstract

A research on the isotope effects in transport of hydrogen through the solid electrolyte SrCe_<0.95>Yb_<0.05>O_<3-6> was performed and the following results were obtained.
1. On the measurement of electrical conductivity, an isotope effect was observed in the conditions where the proton conduction is dominant. The ratio of conductivity of proton to deuteron was ROO<2> which is normal difference estimated from the theory of classical kinetics.
2. The solubility of hydrogen was measured by Sieverts method. The value was found very large compared to other oxides. The isotope effect in the solubility of hydrogen was not detected.
3. The chemical diffusion coefficient was obtained from the solubility measurements. The isotope effect was also not detected. It was considered that the effect was reduced by the mechanism of ambipolar diffusion with oxygen ion vacancy.
4. A new mechanism of solution of hydrogen was found in the condition of low oxygen chemical potential with the measurements of thermal desorption analysis.
5. The permeation of hydrogen through the thin wall of the sample with and without electrolysis was studied and its phenomena was analyzed based on the model of defects. The ratio of permeated light hydrogen to heavy one was found 1.9 without electrolysis and was found 3.5 with electrolysis. These large isotope effects are not explained from the difference of their mobilities. The difference of the speed of electrode reaction was suggested as the reason of these phenomena.
The possibility of this electrolyte as the material of membrane for the separation of isotope of hydrogen was ascertained from above results.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 武津典彦: "SrCe_<0.95>Yb_<0.05>O_<3-δ>固体電解質の非化学量論性と欠陥構造" 第15回固体イオニクス討論会講演要旨集. 15. 23-24 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 中島一嘉: "プロトン導電性酸化物SrCe_<0.95>Yb_<0.05>O_<3-δ>への水素の溶解機構" 日本金属学会昭和63年度秋期大会講演概要集. 103. 445-445 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 武津典彦: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>O_<3-δ>の電気伝導度の雰囲気依存性" 日本金属学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Norihiko FUKATU: "Transport Phenomena in Proton Conducting Solid Electrolyte SrCe_<0.95>Yb_<0.05>HδO_<3-γ>" Extended Abstracts,7th International Conference on Solid State Ionics(Hakone,Japan). 332-332 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 出川英孝: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>HδO_<3-γ>中での物質移動" 日本金属学会春期大会講演概要(1990.4). 106. 449-449 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 山田みすず: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>HδO_<3-γ>の雰囲気による組成変化" 日本金属学会春期大会講演会概要(1990.4). 106. 449-449 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 武津典彦: "高温型酸化物プロトン導電体の物性と応用" 日本金属学会会報.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Fukatsu, K.Nakajima and T.Ohashi: "Nonstoichiometry and Defect Structure of Solid Electrolyte SrCe_<0.95>Yb_<0.05>O_<3-delta>." Extn'd Abs., 15th Sympo. Solid State Ionics in Japan, Vol.15, p.23(1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] K.Nakajima, N.Fukatsu and T.Ohashi: "Mechanism of Solution of Hydrogen into Proton Conducting Oxide SrCe_<0.95>Yb_<0.05>O_<3-delta>." Extn'd Abs., 103rd Meeting of Japan Institute of Metals, Vol.103, p.445(1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Fukatsu, H.Kato, H.Masuoka and T.Ohashi: "Atmosphere Dependency of Electrical Conductivity of SrCe_<0.95>Yb_<0.05>O_<3-delta>." Journal of Japan Institute of Metals.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Fukatsu, M.Yamada and T.Ohashi: "Transport Phenomena in Proton Conducting Solid Electrolyte SrCe_<0.95>Yb_<0.05>H_<gamma>O_<3-delta>." Extn'd Abs., 7th Int. Conf. on Solid State Ionics (Hakone Japan), p.332(1989).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Degawa, N.Fukatsu, M.Yamada and T.Ohashi: "Mass Transport in Proton Conducting Solid Electrolyte SrCe_<0.95>Yb_<0.05>H_<gamma>O_<3-delta>." Extn'd Abs., 106th Meeting of Japan Institute of Metals, Vol.106, p.449(1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Yamada, N.Fukatsu, H.Degawa and T.Ohashi: "Compositional Change of Proton Conducting Solid Electrolyte SrCe_<0.95>Yb_<0.05>H_<gamma>O_<3-delta>." Extn'd Abs., 106th Meeting of Japan Institute of Metals, Vol.106, p.449(1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Fukatsu: "Properties and Applications of High Temperature Type Oxide Proton Conductor." Bulletin of Japan Institute of Metals.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 武津典彦: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>O_<3-γ>の電気伝導度の雰囲気依存性" 日本金属学会誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] Norihiko FUKATSU: "Transport Phenomena in Proton Conducting Solid Electrolyte SrCe_<0.95>Yb_<0.05>HδO_<3-γ>" Extended Abstracts,7th International Conference on Solid State Ionics (Hakone,Japan). 332-332 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 出川英孝: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>HδO_<3-γ>中での物質移動" 日本金属学会春期大会講演概要(1990.4). 106. 449-449 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 山田みすず: "プロトン導電性固体電解質SrCe_<0.95>Yb_<0.05>HδO_<3-γ>の雰囲気による組成変化" 日本金属学会春期大会講演概要(1990.4). 106. 449-449 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 武津典彦: 第15回固体イオンクス討論会講演要旨集. 15. 23-24 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 中島一嘉: 日本金属学会昭和63年度秋期大会講演概要集. 103回. 445- (1988)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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