Synergistic effects at the interface of core–shell Cu 3 P@CoO heterojunctions for enhanced nitrate reduction to ammonia

Core–shell Cu 3 P@CoO heterojunction interfaces are proposed as a superb NO 3 RR electrocatalyst for ambient NH 3 synthesis, attaining a large NH 3 yield of 9201 µg h −1 cm −2 and a high FE of 92.4% at −0.4 V in an alkaline electrolyte.