Mesoporous Au₃Pd Film on Ni Foam: A Self-Supported Electrocatalyst for Efficient Synthesis of Ammonia

As a promising alternative approach to industrial N₂ fixation process, electrocatalytic N₂ reduction reaction (NRR) can achieve efficient, sustainable, and eco-friendly ammonia production under ambient conditions. Developing efficient NRR catalysts is critical for the electrochemical ammonia synthesis. Herein, self-supported mesoporous Au₃Pd film on Ni foam (mAu₃Pd/NF) has been in situ synthesized via a micelle-assisted replacement strategy. Combination of bimetallic compositions, interconnected mesoporous structure, and binder-free characteristic, the mAu₃Pd/NF shows a superior NRR performance in 0.1 M Na₂SO₄. This micelle-assisted replacement route is very important to construct efficient self-supporting mesoporous films for the NRR and other fields.