Supercapacitors from Free-Standing Polypyrrole/Graphene Nanocomposites
Name
_system_appendPDF_proof_hi.pdf
Size
1.06 MB
Format
Adobe PDF
Checksum (MD5)
5b228d3830baa1cf2b8c90384565b2e9
Author(s)
de Oliveira, Helinando P.
Sydlik, Stefanie Arlene
Swager, Timothy M
Date Issued
April 2013
Journal
The Journal of Physical Chemistry C
Publisher
American Chemical Society (ACS)
Citation
De Oliveira, Helinando P., Stefanie A. Sydlik, and Timothy M. Swager. “Supercapacitors from Free-Standing Polypyrrole/Graphene Nanocomposites.” The Journal of Physical Chemistry C 117, no. 20 (May 23, 2013): 10270–10276.
Version
Author's final manuscript
Abstract
Interfacial/in situ oxidative polymerization of polypyrrole in the presence of functionalized graphene sheets produces high-quality composites for supercapacitors, as analyzed by electrochemical impedance spectroscopy and cyclic voltammetry analysis. The synergistic interaction induced by the growth of p-type polypyrrole on the surface of negatively charged carboxylate functionalized graphene sheets results in higher storage capacity than graphene-only or polymer-only films. The high conductivity of p-doped polypyrrole and high surface area of graphene promote high charge accumulation in capacitors. We report the optimization of the relative concentrations of carboxylate functionalized graphene in the polypyrrole matrix to maximize the composition’s capacitance to 277.8 F/g.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Chemistry
Koch Institute for Integrative Cancer Research at MIT
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/jp400344u
