Boosting nitrogen reduction reaction by bio-inspired FeMoS containing hybrid electrocatalyst over a wide pH range

Abstract A facile preparation of bio-inspired and morphology controllable catalytic electrode FeS@MoS 2 /CFC , featuring a carbon fiber cloth (CFC) covered with FeS dotted MoS 2 nanosheets, has been established. Synergy between the CFC as a self-standing conductive substrate and the FeS nanoparticle dotted MoS 2 nanosheets with abundant active sites makes the noble-metal-free catalytic electrode FeS@MoS 2 /CFC highly efficient in nitrogen reduction reaction (NRR), with an ammonia production rate of 8.45 μg h −1 cm −2 and excellent long-term stability at −0.5 V in pH neutral electrolyte. Further electrolysis in acidic and alkaline electrolytes revealed the overall NRR catalytic activity of this electrode over a wide pH range.