Synthesis of a highly efficient 3D graphene–CNT–MnO2–PANI nanocomposite as a binder free electrode material for supercapacitors

摘要: Graphene based nanocomposites have been investigated intensively, as electrode materials for energy storage applications. In the current work, a graphene–CNT–MnO2–PANI (GCM@PANI) nanocomposite has synthesized on 3D graphene grown nickel foam, highly efficient binder free material supercapacitors. Interestingly, specific capacitance of increases up to first 1500 charge–discharge cycles, and is thus referred an activation process. The activated GCM@PANI exhibits extraordinary galvanostatic 3037 F g−1 at density 8 A g−1. excellent cyclic stability with retention 83% over 12 000 high rate capability by retaining 84.6% 20 structural electrochemical analysis suggests that astonishing performance might be attributed growth novel PANI nanoparticle layer synergistic effect CNT/MnO2 nanostructures.