Synthesis and characterization of the novel nanocomposite Co(OH)2/graphene as supercapacitor materials

Abstract Co(OH) 2 –graphene composite was prepared through a simultaneous hydrothermal method. The structure, morphology and electrochemical performance of the obtained samples were systematically investigated by means of X-ray diffraction and transmission electron microscopy. Furthermore, cyclic voltammetry measurements showed that the Co(OH) 2 –graphene electrode material had an excellent electrochemical capacitance.