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Reduction of atmospheric nitrogen to ammonia is essential for maintaining the global biogeochemical nitrogen cycle.In this study,we attempt to prepare self-supported interconnected nanoporous Au film on Ni foam(pAu/NF)as a binder-free electrocatalyst for nitrogen reduction reaction(NRR)by a facile electrodepositon method.The pAu/NF consists of abundant interconnected nanoporous structures in the entire Au film.