In devices such as high-temperature solid oxide fuel cells, the gas/solid interface has significant impact on electrode reaction performance and device life. Therefore, the precise regulation and in situ characterization of the high-temperature gas/solid electrochemical interface is a core direction of material research and development in new energy devices. This paper reviews the development process of the preparation and regulation of high-temperature gas/solid interfaces applied to the basic research of high-temperature electrochemistry and device fields, and summarizes the necessity of developing in situ dynamic characterization of high-temperature gas/solid interface and the development status of in situ characterizations in recent years, and points out the challenges of more refined high-temperature gas/solid interface. Combined with the current multidisciplinary development direction, this paper proposes to improve the accuracy of interface control to the atomic scale in future research, develop more in situ characterization methods which are suitable for high-temperature gas/solid interfaces, and combine the use of new data science research methods such as machine learning in the future.

interface study  /  ultra-precision preparation  /  in situ measurement