Electrochemical nitrite (NO) reduction is a potential and sustainable route to produce high-value ammonia (NH), but it requires highly active electrocatalysts. Herein, Cu nanoparticles anchored on a TiO nanobelt array on a titanium plate (Cu@TiO/TP) are reported as a high-efficiency electrocatalyst for NO-to-NH conversion. The designed Cu@TiO/TP catalyst exhibits outstanding catalytic performance toward the NORR, with a high NH yield of 760.5 μmol h cm (237.7 μmol h mg) and an excellent faradaic efficiency of 95.3% in neutral solution. Meanwhile, it also presents strong electrochemical stability during cyclic tests and long-term electrolysis.
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