Polypyrrole-Covered MnO 2 as Electrode Material for Hydrid Supercapacitor

MnO 2 has been studied as hybrid electrode material in aqueous asymmetric supercapacitor. It possesses the advantages of low cost, sufficiently high specific capacitance, and environmentally friendly nature. We studied the blend formed by electrochemical polymerization of pyrrole monomer (Py) deposi...

Full description

Saved in:
Bibliographic Details
Published in:ECS transactions 2013-04, Vol.50 (43), p.79-84
Main Authors: Bahloul, Ahmed, Nessark, B, Briot, Emmanuel, Groult, Henri, Mauger, Alain, Julien, Christian M
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:MnO 2 has been studied as hybrid electrode material in aqueous asymmetric supercapacitor. It possesses the advantages of low cost, sufficiently high specific capacitance, and environmentally friendly nature. We studied the blend formed by electrochemical polymerization of pyrrole monomer (Py) deposited onto MnO 2 particles. The composite material (PPy/MnO 2 ) has been characterized by different methods including cyclic voltammetry, chronoamperometry, X-ray diffractometry and BET measurements. At a constant current density 2 mA cm −2 the specific capacitance was calculated from galvanostatic charge-discharge cycling tests. It has been demonstrated that the asymmetric supercapacitor using (PPy/MnO 2 ) composite material has high specific capacitance of 141.6 F g −1 compared with 73.7 F g −1 for MnO 2 .
ISSN:1938-5862
1938-6737
DOI:10.1149/05043.0079ecst