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，保证SOFC的机械可靠性也很重要。因此，建立不同温度和氧分压条件下合适的机械测试方法是开发可靠的SOFC的先决条件。本文介绍了还原条件下 SOFC 部件的弹性模量和断裂强度研究的实验结果。开发了一种原位机械测试方法，以研究固体氧化物燃料电池组件在高氧化/还原环境下的弹性模量和断裂强度。弹性模量在还原条件下发生变化，这种行为很可能是由于非化学计量造成的。事实证明，现场机械测试方法使我们能够估计 SOFC 电池和电堆的内应力。

项目成果

Oxygen nonstoichiometry of the perovskite-type oxides BaCe0. 9M0. 1O3-δ(M:Y, Yb, Sm, Tb, and Nd)

钙钛矿型氧化物 BaCe0 1O3-δ(M:Y、Yb、Sm、Tb 和 Nd) 的氧非化学计量。

• 发表时间: 2008
• 作者: Masatsugu Oishi; Keiji Yashiro; Kazuhisa Sato; Junichiro Mizusaki; Naoto Kitamura; Koji Amezawa; Tatsuya Kawada; Yoshiharu Uchimoto
• 通讯作者: Yoshiharu Uchimoto

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
• 作者: Masatsugu Oishi; Satoshi Akoshima; Keiji Yashiro; Kazuhisa Sato; Junichiro Mizusaki; Tatsuya Kawada
• 通讯作者: Tatsuya Kawada

Design Concept for the High Temperature Photoelectronic Devices Using SrTiO3

使用 SrTiO3 的高温光电器件的设计理念

• 发表时间: 2009
• 作者: Fumimasa Horikiri; Kazuhisa Sato; Keiji Yashiro; Tatsuya Kawada; Junichiro Mizusaki
• 通讯作者: Junichiro 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: Kazuhisa Sato; Keiji Yashiro; Toshiyuki Hashida; Junichiro Mizusaki
• 通讯作者: Junichiro Mizusaki

Thermal and chemically induced stress of solid oxide fuel cell laminate under oxidizing / reducing gradient condition

氧化/还原梯度条件下固体氧化物燃料电池层压板的热应力和化学应力

• 发表时间: 2009
• 作者: Kazuhisa Sato; Keiji Yashiro; Toshiyuki Hashida; Junichiro Mizusaki
• 通讯作者: Junichiro Mizusaki