In situ evaluation of potential distribution in high temperature electrochemical devices

在实验条件下，研究了高温电化学器件中反应原子的化学势分布，如固体氧化物燃料电池（SOFCs）中的氧化学势。研究结果首次明确了SOFC混合导电多孔阴极的氧势分布和有效反应面积。并以SOFC多孔阴极为模型，从热力学和动力学的角度研究了这种化学势分布对器件性能和耐久性的影响。

The chemical potential distribution of the reactive atomic species in high temperature electrochemical devices, such as the oxygen chemical potential in solid oxide fuel cells (SOFCs), was experimentally evaluated under device operating conditions. As results, we succeeded for the first time to clarify the oxygen potential distribution and the effective reaction area in the SOFC mixed-conducting porous cathode. Influences of such a chemical potential distribution on the device performance and durability were also investigated from the thermodynamic and kinetic points of view, taking the SOFC porous cathode as a model case.