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Abstract Electrocatalytic NO reduction is regarded as an attractive strategy to degrade the NO contaminant into useful NH 3 , but the lack of efficient and stable electrocatalysts to facilitate such multiple proton‐coupled electron‐transfer processes impedes its applications. Here, we report on developing amorphous B 2.6 C supported on a TiO 2 nanoarray on a Ti plate (a‐B 2.6 C@TiO 2 /Ti) as an NH 3 ‐producing nanocatalyst with appreciable activity and durability toward the NO electroreduction. It shows a yield of 3678.6 μg h −1 cm −2 and a FE of 87.6 %, superior to TiO 2 /Ti (563.5 μg h −1 cm −2 , 42.6 %) and a‐B 2.6 C/Ti (2499.2 μg h −1 cm −2 , 85.6 %). An a‐B 2.6 C@TiO 2 /Ti‐based Zn−NO battery achieves a power density of 1.7 mW cm −2 with an NH 3 yield of 1125 μg h −1 cm −2 . An in‐depth understanding of catalytic mechanisms is gained by theoretical calculations.
Liang et al. (Fri,) studied this question.