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Rapid Fabrication of Electrodes for symmetrical solid oxide cells by Extreme Heat Treatment

Energy & Environmental Materials 2024年第5期7卷 353-360页

作者： Weiwei Fan Zhu Sun Manxi Wang Manxian Li Yuming Chen Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Department of Nuclear Science and Engineering Massachusetts Institute of Technology Cambridge School of Materials Science and Engineering Shanghai Jiao Tong University Zhangjiang Institute for Advanced Study (ZIAS) Shanghai Jiao Tong University College of Environmental Science and Engineering and College of Physics and Energy Fujian Normal University

symmetrical solid oxide cells （SSOCs） are very useful for energy generation and conversion. To fabricate the electrode of SSOC, it is very time-consuming to use the conventional approach. In this work, we design and develop a novel method, extreme heat treatment （EHT）, to rapidly fabricate electrodes for SSOC. We show that by using the EHT method, the electrode can be fabricated in seconds （the fastest method to date）, benefiting from enhanced reaction kinetics. The EHT-fabricated electrode presents a porous structure and good adhesion with the electrolyte. In contrast, tens of hours are needed to prepare the electrode by the conventional approach, and the prepared electrode exhibits a dense structure with a larger particle size due to the lengthy treatment. The EHT-fabricated electrode shows desirable electrochemical performance. Moreover, we show that the electrocatalytic activity of the perovskite electrode can be tuned by the vigorous approach of fast exsolution,deriving from the increased active sites for enhancing the electrochemical reactions. At 900℃, a promising peak power density of 966mWcm-2is reached. Our work exploits a new territory to fabricate and develop advanced electrodes for SSOCs in a rapid and high-throughput manner.

关键词： electrochemical performance extreme heat treatment perovskite electrode symmetrical solid oxide cells

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