Enhanced electrocatalytic performance of mesoporous Au-Rh bimetallic films for ammonia synthesis

Electrocatalysis nitrogen reduction reaction (NRR) is expected to achieve sustainable clean and sustainable NH 3 production. Owing to the chemical inertness of N 2 , the design of efficient catalysts is a critical issue. In this work, we propose micelle-assisted replacement method to in situ synthesize mesoporous Au 3 Rh film on Ni foam (mAu 3 Rh/NF). Because of the bimetallic mesoporous and binder-free structures, mAu 3 Rh/NF obtains high Faraday efficiency of 23.84% and NH 3 yield of 26.29 μg h −1 mg -1 cat. for NRR in 0.1 M Na 2 SO 4 at − 0.1 V, outperforming other counterparts with different Au/Rh ratios. This micelle-assisted synthesis method is universal to synthesize high-efficiency mesoporous noble films for NRR and beyond.