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A study on aging-induced conductivity-decrease mechanism in stabilized zirconia through optical property measurements

Research Project

Project/Area Number 20760468
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Structural/Functional materials
Research InstitutionKyoto University

Principal Investigator

HACHIYA Kan  Kyoto University, 大学院・エネルギ-科学研究科, 助教 (90314252)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsイオン結晶 / 格子欠陥 / 燃料電池 / 物性実験 / セラミックス
Research Abstract

Stabilized zirconia is one of the most promising solid electrolyte in solid oxide fuel cell. Nevertheless, it suffers aging-induced conductivity decrease, time-dependent degradation at its high operating temperature. Suppression of the effect is known to be achieved by adding scandium or indium oxides. On the other hand, oxygen vacancies diffusing in ionic conduction reflect their structural changes in the electronic structures, which are confirmed by photoluminescence spectra. This research project investigates degradation and suppression mechanism of aging in oxides through optical property measurements.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (8 results)

All 2010 2009 2008

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (4 results)

  • [Journal Article] Photoluminescence properties of scandia-stabilized zirconia Transactions of the Materials Research2010

    • Author(s)
      Kan Hachiya, Junya Kondoh
    • Journal Title

      Society of Japan Vol35

      Pages: 39-42

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence properties of scandia-stabilized zirconia2010

    • Author(s)
      Kan Hachiya, Junya Kondoh
    • Journal Title

      Transactions of the Materials Research Society of Japan 35

      Pages: 39-42

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Susumu Yoshikawa Plasma emission and surface reduction of titanium dioxides by microwave irradiation2009

    • Author(s)
      Taro Sonobe, Tomohiko Mitani, Naoki Shinohara, Kan Hachiya
    • Journal Title

      Japanese Journal of Applied Physics Vol.48

      Pages: 1-7

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Plasma emission and surface reduction of titanium dioxides by microwave irradiation2009

    • Author(s)
      Taro Sonobe, Tomohiko Mitani, Naoki Shinohara, Kan Hachiya, Susumu Yoshikawa
    • Journal Title

      Japanese Journal of Applied Physics 48

    • NAID

      40016844228

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] エネルギー機能酸化物における欠陥の電子構造と光学特性2009

    • Author(s)
      蜂谷寛
    • Organizer
      2009年度第1回関西電気化学研究会
    • Place of Presentation
      京都府宇治市京都大学宇治キャンパス木質ホール
    • Year and Date
      2009-07-04
    • Related Report
      2009 Final Research Report
  • [Presentation] エネルギー機能酸化物における欠陥の電子構造と光学特性2009

    • Author(s)
      蜂谷寛
    • Organizer
      2009年度第1回 関西電気化学研究会
    • Place of Presentation
      京都大学宇治キャンパス木質ホール
    • Year and Date
      2009-07-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Photoluminescence properties of scandiastabilized zirconia2008

    • Author(s)
      Kan Hachiya, Junya Kondoh
    • Organizer
      The IUMRS-ICA 2008 Conference
    • Place of Presentation
      名古屋市名古屋国際会議場
    • Year and Date
      2008-12-09
    • Related Report
      2009 Final Research Report
  • [Presentation] Photoluminescence properties of scandia-stabilized zirconia2008

    • Author(s)
      Kan Hachiya and Junya Kondoh
    • Organizer
      The IUMRS-ICA 2008 Conference
    • Place of Presentation
      名古屋市
    • Year and Date
      2008-12-09
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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