Ultra High Resolution Depth Resolved Analysis on High Temperature Nano-ionics Phenomena to Development of High Active Fuel Cell Electrode

对于高温电化学器件，讨论了电极或电极/电解液的阴极反应机理。特别讨论了钙钛矿型氧化物阴极/电解液的控速步骤。研究了高温电化学器件元件材料在高温电化学器件工作条件下的原位深度分辨X射线吸收光谱(XAS)测量。原位XAS分析结果表明，电极/电解液界面反应是决定反应速率的主要步骤。

For high temperature electrochemical devices, the cathode reaction mechanism for electrode or electrode/electrolyte are discussed. Especially, we discuss the rate-determining-step for the he perovskite-related oxides cathode/electrolyte. We investigated in situ depth resolved X-ray absorption spectroscopy (XAS) measurement for high temperature electrochemical devices component materials under the operating condition of high temperature electrochemical devices. The in situ XAS results clearly indicated that the rate-determining step is the reaction at electrode/electrolyte interface.