Improved performance of a MnO2@PANI nanocomposite synthesized on 3D graphene as a binder free electrode for supercapacitors
RSC Advances Pub Date: 2016-05-04 DOI: 10.1039/C6RA08665A
Abstract
In the current study, we have synthesized a binder free nickel foam graphene MnO2@PANI (MnO2@PANI/graphene) nanocomposite by simple hydrothermal method followed by in situ polymerization. The graphene grown on nickel foam is used as a 3D scaffold conducting substrate for binder free nanocomposite electrode synthesis. Morphological characterization of the nanocomposite reveals growth of the MnO2 intercalated PANI nanorods-like network. The electrochemical study demonstrates very interesting electrode activation phenomenon, i.e. increase in specific capacitance upto 1500 charge–discharge cycles. The activated MnO2@PANI/graphene nanocomposite exhibits a maximum specific capacitance of 1369 F g?1 at 3 A g?1 current density and excellent rate capability of more than 70% by varying current density from 3 A g?1 to 15 A g?1. The activated electrode displays good cyclic stability by retaining SC over 83% after 5000 cycles.
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Journal Name：RSC Advances
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CAS no.: 89640-58-4
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