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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.

Author information

1
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. cxiong@whut.edu.cn yangql@whut.edu.cn.

Abstract

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.

PMID:
29130462
DOI:
10.1039/c7nr06847f

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