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Nanoscale. 2017 Nov 23;9(45):17710-17716. doi: 10.1039/c7nr06847f.

A three-dimensional graphene aerogel containing solvent-free polyaniline fluid for high performance supercapacitors.

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State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and School of Materials Science and Engineering, Wuhan University of Technology, 430070, Wuhan, China.


Conducting polymer based supercapacitors usually suffer from the difficulty of achieving high specific capacitance and good long-term stability simultaneously. In this communication, a long-chain protonic acid doped solvent-free self-suspended polyaniline (S-PANI) fluid and reduced graphene oxide (RGO) were used to fabricate a three-dimensional RGO/S-PANI aerogel via a simple self-assembled hydrothermal method, which was then applied as a supercapacitor electrode. This 3D RGO/S-PANI composite exhibited a high specific capacitance of up to 480 F g-1 at a current density of 1 A g-1 and 334 F g-1 even at a high discharge rate of 40 A g-1. An outstanding cycling performance, with 96.14% of the initial capacitance remaining after 10‚ÄČ000 charging/discharging cycles at a rate of 10 A g-1, was also achieved. Compared with the conventional conducting polymer materials, the 3D RGO/S-PANI composite presented more reliable rate capability and cycling stability. Moreover, S-PANI possesses excellent processability, thereby revealing its enormous potential in large scale production. We anticipate that the solvent-free fluid technique is also applicable to the preparation of other 3D graphene/polymer materials for energy storage.


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