Poly(3,4-ethylenedioxypyrrole) Enwrapped Bi2S3 Nanoflowers for Rigid and Flexible Supercapacitors

Mukkabla, R and M, Deepa and Srivastava, A K (2015) Poly(3,4-ethylenedioxypyrrole) Enwrapped Bi2S3 Nanoflowers for Rigid and Flexible Supercapacitors. Electrochimica Acta, 164. pp. 171-181. ISSN 0013-4686

Text
mmc1.pdf - Supplemental Material
Restricted to Registered users only
Download (598kB) | Request a copy

Abstract

A hybrid material composed of poly(3,4-ethylenedioxypyrrole) or (PEDOP) enwrapped Bi2S3 nanoflowers was synthesized for the first time for use as supercapacitor electrodes. The Bi2S3 nanoflowers were enveloped by a sheath of PEDOP, during the course of electropolymerization and uniform coatings of PEDOP/Bi2S3 hybrid were deposited on rigid and flexible current collectors. Asymmetric supercapacitors were constructed using the PEDOP/Bi2S3 hybrid and graphite (Gr) as working and counter electrodes. The electrochemical specific capacitance of the hybrid based cell (201 F g−1) was found to be 3.58 times greater than that of the pristine polymer (56 F g−1), at the same current density of 1 A g−1. The PEDOP/Bi2S3-Gr cell delivered energy and power densities of 100.5 Wh kg−1 and 0.5 kW kg−1 respectively. The Bi2S3 nanoflowers also furnish a robust support to PEDOP, which was reflected in an excellent rate capability, for the hybrid sustains high currents, without incurring a significant loss in capacitance, and good durability upon repeated switching between doped and dedoped states. A flexible supercapacitor was also fabricated with the PEDOP/Bi2S3 hybrid and it delivered a capacitance of 329 F g−1 (at 0.4 A g−1), thus indicating the promise the hybrid holds for realizing scalable, but lightweight high performance supercapacitors.

[error in script]

IITH Creators:

IITH Creators	ORCiD
M, Deepa	UNSPECIFIED

Item Type:

Article

Additional Information:

XRD patterns and Raman spectra of polymer, Bi2S3 and hybrid, SC values of cells, charge-discharge performance of a Gr-Gr cell and FE-SEM images of the graphite electrode, C-fabric, PEDOP/Bi2S3 coated C-fabric electrodes are available.

Uncontrolled Keywords:

conducting polymer; electrochemical; hybrid; metal sulfide; pseudocapacitor

Subjects:

Chemistry

Divisions:

Department of Chemistry

Depositing User:

Team Library

Date Deposited:

18 Feb 2015 08:57

Last Modified:

18 Oct 2017 07:22