Construction of fusiform Co3O4 for supercapacitors

Abstract

A novel fusiform Co3O4 has been successfully synthesized by a solvothermal method. The fusiform structure can be synergistically determined by various characterization methods (such as XRD, XPS, SEM and TEM). Owing to the special morphology of fusiform Co3O4, it achieves specific capacitances of 544.3 F g-1 at the current densities of 0.5 A g-1 in a three-electrode system, exhibiting excellent cycling stability with a specific capacitance retention of 81.9% after 2000 cycles at a current density of 20 A g-1. *Correspondence to: Weiwei Kang, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, PR China, E-mail: weiweikangwell@163.com