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Development of Ultra High-Temperature Oxide Proton Conductive Solid Electrolyte

Research Project

Project/Area Number 09450278
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Metal making engineering
Research InstitutionNagoya Institute of Technology

Principal Investigator

FUKATSU Norihiko  Nagoya Institute of Technology, Faculty of Engineering, Associate Professor., 工学部, 助教授 (80029355)

Co-Investigator(Kenkyū-buntansha) OHASHI Teruo  Nagoya Institute of Technology, Faculty of Engineering, Professor., 工学部, 教授 (70024263)
KURITA Noriaki  Nagoya Institute of Technology, Faculty of Engineering, Research Associate., 工学部, 助手 (20292401)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 1999: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1998: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1997: ¥9,000,000 (Direct Cost: ¥9,000,000)
Keywordsalumina / hydrogen solubility / proton conduction / solid electrolyte / IR absorption / isotope effect / hydrogen sensor / electrical conductivity / 酸化物 / スピネル / プロトン電導
Research Abstract

The defect structure of the conventional proton conductor CaZrO3(+In) in the high temperature region was studied in detail at first. According to the results, a new method to compensate the effect of the oxide ion conduction, which become remarkable in higher temperature range, was developed. The prototype hydrogen sensor system designed adopting this method was made and tested in the laboratory and the practical plant. The high performance of the system as the monitoring tool for the metal melting process was confirmed.
In order to find the proton conductor usable in higher temperatures, the behavior of hydrogen in the single crystal of magnesium aluminate spinel was studied. From the existence of OH stretching vibration observed in the IR absorption spectrum, the dissolution of hydrogen into the alumina-rich spinel as the type of proton was ascertained. The chemical diffusion coefficient of hydrogen determined from the dissolution rate was found far smaller than those of conventional … More perobskite-type proton conductors. As the H/D isotope effect in the electrical conductivity was not observed, it was confirmed that the contribution of the movement of the dissolved proton to the electrical conduction was very small.
From the consideration on the curious phenomena observed concerning the extra high hydrogen solubility of molten aluminum, the possibility of alumina-base proton.conductor was suggested. Therefore, the hydrogen dissolution into the single crystal of Mg-doped alpha alumina was studied extensively. From the result of IR absorption, hydrogen was confirmed to dissolve as a movable proton. A clear H/D isotope effect was observed in the electrical conductivity measurement. And the predominancy of the proton conduction was ascertained. Using Mg doped sintered polycrystalline alumina, the proton transport number was determined by EMF method. The determined value in hydrogen atmosphere was more than 0.5 even at the temperature l473K.It was found that Mg-doped alpha alumina was the best material as a proton conducting solid electrolyte for high temperature use. The performance of the hydrogen sensor using this electrolyte was also tested and good results were obtained. Less

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] 栗田典明 他: "プロトン導電性固体電解質を用いた溶融銅中の水素活量の連続測定"資源と素材. 113. 45-51 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] N.Fukatsu et al.: "Hydrogen sensor for molten metals usable up to 1500K"Solid State Ionics. 113-115. 219-227 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] N.Fukatsu et al.: "Role of the Oxide Film formed on the Surface of Molten Aluminum as a Membrane for Chemical Pumping of Hydrogen"Electrochemistry. 68. 709-712 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 武津典彦,栗田典明: "α-アルミナ中の水素の化学拡散"固体イオニクス研究会資料. 26. 28-40 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 栗田典明 他: "α-Al_2O_3中のプロトン伝導"固体イオニクス討論会講演要旨集. 26. 190-191 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] N.Fukatsu et al.: "Incorporation of Hydrogen into Magnesium Aluminate Spinel"International Conference on Solid State Ionics, SSI 2001. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Noriaki KURITA, Norihiko FUKATSU, Akira NAITO, Kunihiro KOIDE and Teruo OHASHI: "The Continuous Measurement of Hydrogen Activities in Molten Copper using Proton-Conductive Solid Electrolyte"Shigen-to-Sozai. Vol.113. 45-51 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Norihiko FUKATSU, Noriaki KURITA, Kunihiro KOIDE and Teruo OHASHI: "Hydrogen sensor for molten metals usable up to 1500K"Solid State Ionics. Vol.113-115. 219-227 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Norihiko FUKATSU, Noriaki KURITA, Naoyuki ISHIHARA, Nariyuki. OKABAYASHI and Teruo. OHASHI: "Role of the Oxide Film formed on the Surface of Molten Aluminum as a Membrane for Chemical Pumping of Hydrogen"Electrochemistry. Vol.68. 709-712 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Norihiko FUKATSU and Noriaki KURITA: "Chemical Diffusion of Hydrogen in Alpha Alumina"Proceedings of Symposium of Solid State Ionics Society of Japan. Vol.26. 28-40 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Noriaki KURITA, Norihiko FUKATSU, Teruo OHASHI, Shingo YAMAMOTO and Yuichirou OKA: "Protonic Conduction in Alpha Alumina"Extended Abstract of the Symposium on Solid Ionics in Japan. Vol.26. 190-191 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Norihiko FUKATSU, Noriaki KURITA, Hiroyuki SHIGA, Yasuto MURAI and Teruo OHASHI: "Incorporation of Hydrogen into Magnesium Aluminate Spinel"International Conference on Solid State Ionics, SSI 2001. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 栗田典明 他: "銅および銅亜鉛合金の凝固時における溶存ガスの挙動"資源・素材'99(京都) 企画発表資料. D-4. 97-100 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 栗田典明 他: "溶融銅用水素センサーの動作原理"資源・素材'99(京都) 企画発表資料. D-4. 101-104 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 栗田典明 他: "溶融銅用水素センサーの構造と評価試験"資源・素材'99(京都) 企画発表資料. D-4. 105-108 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 栗田典明 他: "溶融銅用水素センサーの現場試験のまとめと総合評価"資源・素材'99(京都) 企画発表資料. D-4. 124-128 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 栗田典明 他: "プロトン導電性固体電解質CaZr_<0.9>In_<0.1>O_<3-d>を用いた溶融銅用水素センサーの実用化試験"固体イオニクス討論会講演要旨集. 25. 23-24 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 藤原嗣典: "溶融銅中におけるFe基耐熱合金の耐食条件の決定"日本金属学会秋期大会講演概要集. 125. 518-518 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N.Fukatsu et al.: "Hydrogen sensor for molten metal usable upto 1500K" Solid State Ionics. 115. 219-227 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 栗田典明 他: "電気化学的手法を用いた液体銅合金の水素の活量係数の測定" 資源・素材学会春季大会講演集. 122-122 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 栗田典明 他: "焼結アルミナを電解質としたガス濃淡電池の起電力" 電気化学会第65大会講演要旨集. 331-331 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 村井康人 他: "水素を含んだMg_<1-x>Al_2O_<4-d>の電気化学的特性" 日本金属学会秋期大会講演概要. 169-169 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 栗田典明 他: "α-Al_2O_3中のプロトン伝導" 第24回固体イオニクス討論会講演概要集. 47-48 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 熊 岳平 他: "CaZr_<0.98>In_<0.02>O_<3-d>を電解質としたガス濃淡電池の直流分極特性" 電気化学会秋期大会講演要旨集. 214-214 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 栗田典明: "電気化学的方法による液体Ag-Pd合金の水素溶解度の決定" 日本金属学会秋期大会講演概要. 121. 475-475 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 宮本展宏: "溶融アルミニウムへの水素溶解における表面酸化膜の役割" 日本金属学会秋期大会講演概要. 121. 469-469 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 栗田典明: "ZrをドープしたCaIn_2O_4の安定領域" 電気化学会秋季大会講演要旨集. 2127-2127 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Fukatu: "Hydrogen Sensor for Molten Metals Usable up to 1500K" 11th International Conference on Solid State Ionics Extended Abstracts. 149-149 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 武津典彦: "1500Kまで使用可能な溶融金属用水素センサー" 固体イオニクス討論会講演要旨集. 23. 171-172 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 栗田典明: "焼結アルミナを電解質としたガス濃淡電池の起電力" 電気化学会春季大会講演要旨集. (発表予定). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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