Electroreduction of nitrite (NO ) to ammonia (NH ) provides a sustainable approach to yield NH , whilst eliminating NO contaminants. In this study, Ni nanoparticles strutted 3D honeycomb-like porous carbon framework (Ni@HPCF) is fabricated as a high-efficiency electrocatalyst for selective reduction of NO to NH . In 0.1 M NaOH with NO , such Ni@HPCF electrode obtains a significant NH yield of 12.04 mg h mg and a Faradaic efficiency of 95.1 %. Furthermore, it exhibits good long-term electrolysis stability.
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