Facile synthesis of Ni<sub>3sub>S<sub>2sub> and Co<sub>9sub>S<sub>8sub> double-size nanoparticles decorated on rGO for high-performance supercapacitor electrode materials
A facile and cost-effective way was developed to produce rGO/Ni3S2/Co9S8 composite. Ni3S2 and Co9S8 double-size nanoparticles were decorated on rGO sheets. rGO/Ni3S2/Co9S8 composite electrode presents excellent capacitive performance.