Single-atom Cu anchored on Mo2C boosts nitrite electroreduction to ammonia

Cu single atoms on Mo 2 C (Cu 1 /Mo 2 C) are explored as an efficient catalyst for NO 2 − electroreduction to NH 3 , which arises from the creation of Cu–Mo dual-active centers to synergistically activate NO 2 − and promote the NO 2 − -to-NH 3 energetics.