Correlation between oxygen vacancy and mechanical properties in oxideunder chemical potential

化学势下氧化物中氧空位与机械性能的相关性

• 批准号: 20760061
• 负责人: SATO Kazuhisa
• 金额: $ 2.75万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760061/
• 关键词: 固体酸化物形燃料電池; 機能性酸化物; 酸素不定比性; 機械的特性; 電気化学的特性; 固体酸化物燃料電池; 酸素イオン導電体; 混合導電体; 化学ポテンシャル; 縦弾性係数; 破壊強度

For the commercialization of solid oxide fuel cell (SOFC), in addition to the electrical reliability, it is also important to ensure the mechanical reliability of SOFC. Thus, the establishment of a suitable mechanical testing method under various temperatures and oxygen partial pressure conditions is a prerequisite for the development of reliable SOFCs. This paper presents the experimental results of the investigation of elastic modulus and fracture strength on the SOFC components under reducing conditions. An in-situ mechanical testing method was developed in order to investigate the elastic modulus and fracture strength of solid oxide fuel cells components under high oxidizing/reducing environments. The elastic modulus was shown to change under reducing condition, and the behavior was most likely due to non-stoichiometry. It was demonstrated that the in-situ mechanical testing method enabled us to estimate the internal stress in the SOFC cell and stack.

对于固体氧化物燃料电池（SOFC）的商业化，除了电气可靠性外，确保SOFC的机械可靠性也很重要。因此，在各种温度和氧分压条件下建立合适的力学测试方法是开发可靠SOFCs的前提。本文给出了还原条件下SOFC构件弹性模量和断裂强度的实验研究结果。为了研究高氧化还原环境下固体氧化物燃料电池部件的弹性模量和断裂强度，建立了原位力学试验方法。在还原条件下，弹性模量发生了变化，这种行为很可能是由于非化学计量。结果表明，原位力学测试方法可以估计SOFC单元和堆叠的内应力。

项目成果

Defect structure analysis of B-site doped perocskite-type proton conducting oxide BaCeO3

B位掺杂钙钛矿型质子传导氧化物BaCeO3的缺陷结构分析

• 发表时间: 2008
• 期刊: Solid State Ionics 179
• 作者: Masatsugu Oishi;Satoshi Akoshima;Keiji Yashiro;Kazuhisa Sato;Junichiro Mizusaki;Tatsuya Kawada
• 通讯作者: Tatsuya Kawada

Defect structure analysis of B-site doped perovskite-type proton conducting oxide BaCeO3 Part1 : The defect concentration of BaCe0.9M0.1O3-δ(M=Y and Yb)

B位掺杂钙钛矿型质子导电氧化物BaCeO3的缺陷结构分析第1部分：BaCe0.9M0.1O3-δ(M=Y和Yb)的缺陷浓度

• 发表时间: 2009
• 期刊: Solid State Ionics 180
• 作者: Masatsugu Oishi;Satoshi Akoshima;Keiji Yashiro;Kazuhisa Sato;Junichiro Mizusaki;Tatsuya Kawada
• 通讯作者: Tatsuya Kawada

SOFCの信頼性評価のための機械的解析(Mechanical analysis for reliability evaluation of SOFC)

SOFC可靠性评估的力学分析

• 发表时间: 2008
• 作者: 佐藤一永;八代圭司;井口史匡;古山通久;雨澤浩史;寺田賢二郎;湯上浩雄;橋田俊之;水崎純一郎;川田達也
• 通讯作者: 川田達也

Effect of Y2O3 addition on the conductivity and elastic modulus of (CeO2)1 − x(YO1.5)x

• DOI: 10.1016/j.ssi.2009.06.003
• 发表时间: 2009-08
• 期刊: Solid State Ionics
• 影响因子: 3.2
• 作者: Kazuhisa Sato;Ken Suzuki;K. Yashiro;T. Kawada;H. Yugami;T. Hashida;A. Atkinson;J. Mizusaki

Chemically-induced stress of fuel cell laminate under oxidizing/reducing gradient condition

氧化/还原梯度条件下燃料电池层压板的化学诱导应力

• 发表时间: 2009
• 作者: N.Nakashima;S.Fujino;M.Tateiba;Y.Onoue;佐藤一永
• 通讯作者: 佐藤一永