▎ 摘　　要

We synthesized Co(OH)(2)/graphene composites from graphite without a graphene oxide (GO) step. The Co(OH)(2)/graphene composite exhibited a specific capacitance of 960 F g(-1) at a current density of 10 A g(-1). In addition, after 5000 cycles of charge/discharge operation, the Co(OH)(2)/graphene composite maintained its initial specific capacitance value of 93.4% at a current density of 30 A g(-1).