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Nanodiamond Converted Hollow Graphene Spheres as Electrodes for Supercapacitors

  • J. L. Li (a1), S. Su (a1), J. Li (a1) and H. Ye (a1)


A porous composite formed of hollow graphene spheres with opens in them and amorphous carbon containing nitrogen and oxygenated groups has been fabricated by annealing the mixture of nanodiamond and polyacrylonitrile (PAN). Electrochemical tests on the electrode made of this material show that it may be a promising electrode material for supercapacitors. The relatively high capacitance is mainly attributed to the small inner electrical resistance, the huge specific surface area and the remaining nitrogen and oxygenated groups from the PAN.


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