2015 Fiscal Year Final Research Report
Electrode reaction mechanism analysis using hetero junction boundary length control between ionic conductors.
| Project/Area Number |
25289246
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
AMEZAWA KOJI 東北大学, 多元物質科学研究所, 教授 (90263136)
IGUCHI FUMITADA 東北大学, 工学研究科, 准教授 (00361113)
NAKAMURA TAKASHI 東北大学, 多元物質科学研究所, 助教 (20643232)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWADA Tatsuya 東北大学, 環境科学研究科, 教授 (10271983)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | パターン電極 / 固体酸化物形燃料電池 / 電極反応経路 / 酸化物空気極 / 二相界面反応 / 三相界面反応 |
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| Outline of Final Research Achievements |
Recently, composite SOFC (solid state fuel cells) cathodes between the mixed conducting oxides and electrolyte materials are widely examined due to the expectation of reaction site enhancement on triple phase boundary, However, evaluation of quantitative reactivity at triple phase boundary and the detail analysis of reaction process were not enough examined for the mix conducting cathodes. In this study, pattern electrode formation technologies is established to give a quantitative evaluation of activity at triple phase boundary by controlling of the triple phase boundary length and electrode area. As the results, it was found out that interfacial conductivity of La0.6Sr0.4CoO3-d(LSC) cathode on a CeO2 based oxide ionic conductor depended on the area specific triple phase boundary length below 873K. Additionally, it was also discovered that cathodic reaction sites of LSC cathode on a proton conducting electrolyte were mainly triple phase boundaries.
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| Free Research Field |
工学
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