Synthesis of a highly efficient 3D graphene–CNT–MnO 2 –PANI nanocomposite as a binder free electrode material for supercapacitors

A nanocomposite exhibits an electrode activation phenomenon, i.e. an increase in SC up to the first 1500 CD cycles, and thus demonstrates a maximum SC of 3037 F g −1 at 8 A g −1 , and good cyclic stability with a capacitance retention of 83% over 12 000 cycles.