Abstract
Decorating metallic nanoparticles on the surface of oxide support is a promising approach to tailor the catalytic activity of perovskite. Here, for the first time using thermal shock to rapidly fabricate nanoparticle‐decorated materials (NDMs) is proposed. Low‐cost and size‐tailorable carbon paper is used as the heating source during the thermal shock. It is reported that by thermal shock technique, only ≈13 s including heating and treating time is needed to fabricate the exsolution‐based NDMs (the fastest method to date). Benefitted by the sufficiently provided driving force and the short treating time, as compared to the product prepared by the conventionally furnace‐based method, higher particle density and smaller particle size of the exsolved catalysts are acquired for the thermal shock fabricated NDM, giving rise to a fascinating improvement (12‐fold) of the electrochemical performance. This work develops a new technique to rapidly fabricate NDMs in an economic and high‐throughput manner, profoundly improving the flexibility of the application of exsolution‐based materials in electrochemical devices.
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