Developing efficient stable oxygen electrode materials in reversible SOFC/SOECs by grain boundary engineering

通过晶界工程开发可逆 SOFC/SOEC 中高效稳定的氧电极材料

• 批准号: 17J02103
• 负责人: CHEN TING
• 金额: $ 1.09万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2017
• 资助国家: 日本
• 起止时间: 2017-04-26 至 2019-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17J02103/
• 关键词: oxygen surface exchange; thin films; oxygen electrodes; optical absorption; in situ crystallization; crystallinity; degradation; grain boundary

The impact of microstructure on oxygen surface exchange kinetics for different thin film oxygen electrodes (Perovskite, Fluorite and Ruddlesden-Popper structures) in R-SOCs have been investigated via an in situ optical transmission relaxation approach. The crystallization could enhance k of perovskite and RP-perovskite materials, but not for fluorite structure. Such results guide ways to optimize oxygen electrode processing for high efficient performance of oxygen electrodes, whic has been published in ACS Appl. Mater. Interfaces, 11, 9, 9102-9116 (2019). Another work of “Modifying grain boundary ionic/electronic transport in nano-Sr- and Mg- doped LaGaO3-δ by sintering variations” has also seen submitted to the Journal of The Electrochemical Society.

通过原位光透射弛豫方法研究了R-SOC中不同薄膜氧电极（Peroxide、Fluorite和Ruddlesden-Popper结构）的微结构对氧表面交换动力学的影响。晶化可以提高钙钛矿和RP-钙钛矿材料的k值，但对萤石结构没有影响。这些结果指导了优化氧电极工艺以实现氧电极的高效性能的方法，该方法已发表在ACS Appl. Mater上。Interfaces，11，9，9102-9116（2019）。另一项工作“通过烧结变化改变纳米Sr和Mg掺杂的LaGaO 3-δ中的晶界离子/电子输运”也已提交给电化学学会杂志。

项目成果

Understanding the role of microstructure on oxygen surface exchange kinetics via in situ optical absorption relaxation: Sr(Ti,Fe)O3 as a case study

通过原位光吸收弛豫了解微观结构对氧表面交换动力学的作用：以 Sr(Ti,Fe)O3 为例

• 发表时间: 2017
• 作者: T. Chen;G.F. Harrington;K. Sasaki;and N.H. Perry
• 通讯作者: and N.H. Perry

The impact of in situ crystallization on oxygen surface exchange kinetics of mixed conducting thin film oxygen electrodes

原位结晶对混合导电薄膜氧电极氧表面交换动力学的影响

• 发表时间: 2018
• 作者: Ting Chen;George F. Harrington;Kazunari Sasaki;and Nicola H. Perry
• 通讯作者: and Nicola H. Perry

Towards efficient solid oxide cell electrodes by understanding oxygen surface exchange kinetics

通过了解氧表面交换动力学实现高效的固体氧化物电池电极

• 发表时间: 2018
• 作者: T. Chen;G.F. Harrington;K. Sasaki;and N.H. Perry
• 通讯作者: and N.H. Perry

Impact of microstructure and crystallinity on surface exchange kinetics of strontium titanium iron oxide perovskite by in situ optical transmission relaxation approach

• DOI: 10.1039/c7ta04940d
• 发表时间: 2017-11-28
• 期刊: JOURNAL OF MATERIALS CHEMISTRY A
• 影响因子: 11.9
• 作者: Chen, Ting;Harrington, George F.;Perry, Nicola H.
• 通讯作者: Perry, Nicola H.

Microstructures and stability studies of oxygen surface exchange kinetics on Sr(Ti,Fe)O3 oxygen electrodes by in-situ optical absorption relaxation

原位光吸收弛豫研究Sr(Ti,Fe)O3氧电极氧表面交换动力学的微观结构和稳定性

• 发表时间: 2017
• 作者: T. Chen;G.F. Harrington;K. Sasaki;and N.H. Perry
• 通讯作者: and N.H. Perry