An urchin-like Co-doped NiS2/C nanorod array with enriched sulfur vacancies for asymmetric supercapacitors

Co-NiS 2 /C is prepared by one-step carbonization/sulfurization of Co-NiBTC. Its Co-doping, sulfur vacancies, carbon framework, porosity and urchin-like morphology enable active faradaic reactions and enhanced electrochemical performance.