Loading…

A simple and controllable nanostructure comprising non-conductive poly(vinylidene fluoride) and graphene nanosheets for supercapacitor

An effective method was used to Ioidal suspensions of highly reduced graphene produce stable and homogeneous coloxide (RGO) in N,N-dimethylformamide (DMF) without the assistance of dispersing agents. According to the results of general characterization, relatively pure graphene sheets with the morph...

Full description

Saved in:
Bibliographic Details
Published in:材料科学前沿:英文版 2012, Vol.6 (2), p.149-159
Main Author: Jing SUN Ling-Hao HE Qiao-Ling ZHAO Li-Fang CAI Rui SONG Yong-Mei HAO Zhi MA WeiHUANG
Format: Article
Language:English
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An effective method was used to Ioidal suspensions of highly reduced graphene produce stable and homogeneous coloxide (RGO) in N,N-dimethylformamide (DMF) without the assistance of dispersing agents. According to the results of general characterization, relatively pure graphene sheets with the morphology of single layer or few-layer structure were obtained. Then nanocomposite powders of RGO and poly (vinylidene fluoride) (PVDF) were prepared by vacuum filtration of the mixed dispersions of both components. The nanocomposites exhibit a high-frequency capacitative response with small equivalent series resistance (ESR) at 0.4Q, a nearly rectangular cyclic voltammogram and possess a rapid current response as electrodes for supercapacitor in 5mol/L KOH electrolyte. Furthermore, after 600 galvanostatic charge/ discharge cycles, the supercapacitor still performs a very high stability and efficiency of capacitance.
ISSN:2095-025X
2095-0268