Oxygen functional groups improve the energy storage performances of graphene electrochemical supercapacitors
Graphene is a promising electrode material for supercapacitors due to its superior physical
and chemical properties, but the influence of its oxygen functional groups on capacitive
performance still remains somewhat uncertain. In this work, graphene sheets with different
oxygen content have been prepared through thermal reduction in argon. Furthermore,
oxidation and pore-forming treatment of graphene annealed at 800° C are also performed to
explore the important effect of oxygen functional groups. The effects of disorder degree …
and chemical properties, but the influence of its oxygen functional groups on capacitive
performance still remains somewhat uncertain. In this work, graphene sheets with different
oxygen content have been prepared through thermal reduction in argon. Furthermore,
oxidation and pore-forming treatment of graphene annealed at 800° C are also performed to
explore the important effect of oxygen functional groups. The effects of disorder degree …
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