SbS nanoparticles anchored on SnO nanofibers: a high-performance hybrid electrocatalyst toward ammonia synthesis under ambient conditions.

Herein, we report a novel transition-metal-based electrocatalyst, Sb2S3 nanoparticles, which exhibits electrocatalytic activity toward ammonia synthesis under ambient conditions. These Sb2S3 nanoparticles are further anchored on SnO2 nanofibers, which act as an active substrate to prevent them from aggregation while enhancing the electrocatalytic activity. The obtained Sb2S3@SnO2 nanofibers deliver excellent ammonia yield (22.0 μg h-1 mgcat-1) and faradaic efficiency (15.1%) at -0.4 V vs. RHE in 0.1 M Na2SO4.