Synergistic Integration of MXene and Graphene with Ni3S2/Co9S8 Heterostructures into a Hierarchical Nanoarray for Ultrahigh-Capacity Supercapacitors
The pursuit of high-energy-density supercapacitors urgently demands materials that combine high specific capacity, fast charge/discharge capability, and stable operation under long-term cycling conditions. Nevertheless, typical transition-metal sulfides such as Ni3S2 and Co9S8, possess abundant faradaic redox active...