Multiphasic 1T@2H MoSe2 as a highly efficient catalyst for the N2 reduction to NH3

The NH 3 is generally synthesized by the traditional Haber–Bosch method, which is energy-consuming and releases a lot of CO 2 . Electrocatalytic fixation of N 2 is highlighted as a carbon-free route to generate NH 3 by the nitrogen reduction reaction (NRR), but strongly demands highly efficient and durable electrocatalysts. Herein, we propose the multiphasic 1T@2H-MoSe 2 as a highly active NRR catalyst for the first time, which exhibits excellent activity for the NRR with a NH 3 yield of 19.91 ± 0.89 μg h −1 mg cat . −1 and a FE of 2.82% ± 0.1% at −0.6 V in 0.1 M Na 2 SO 4 . Moreover, a good durability is also demonstrated.