High-performance electrochemical nitrate reduction to ammonia under ambient conditions using NiFe 2 O 4 nanosheet arrays

NiFe 2 O 4 /CC is a highly active electrocatalyst for the conversion of nitrate to ammonia under ambient conditions, achieving a remarkably high faradaic efficiency of 96.6% and a large yield of 10.3 mg h −1 cm −2 in 0.1 M PBS with 0.1 M NaNO 3 .