Sulfur dots–graphene nanohybrid: a metal-free electrocatalyst for efficient N2-to-NH3 fixation under ambient conditions

Sulfur dots–graphene nanohybrids act as an efficient electrocatalyst for the conversion of N₂ to NH₃ in 0.5 M LiClO₄, achieving a high NH₃ yield of 28.56 μg h⁻¹ mg_cat.⁻¹ and a Faradaic efficiency of 7.07% at −0.85 V vs. RHE.