Sampath, S. and Choudhury, N.A. and Shukla, A.K.
(2009)
Hydrogel membrane electrolyte for electrochemical capacitors.
Journal of Chemical Sciences, 121 (5).
pp. 727-734.
ISSN 0974-3626
Abstract
Polymer electrolytes are known to possess excellent physicochemical properties that are very
useful for electrochemical energy systems. The mobility in polymer electrolytes is understood to be
mainly due to the segmental motion of polymer chains and the ion transport is generally restricted to the
amorphous phase of the polymer. Gel polymer electrolytes (GPE) that are formed using plastizicers and
polymers along with ionic salts are known to exhibit liquid-like ionic conductivity while maintaining the
dimensional stability of a solid matrix. In the present study, the preparation and characterization of
poly(vinyl alcohol)-based hydrogel membranes (PHMEs) as electrolytes for electrochemical capacitors
have been reported. Varying HClO4 dopant concentration leads to different characteristics of the capacitors.
The EC comprising PHME doped with 2 M HClO4 and black pearl carbon (BPC) electrodes has
been found to exhibit a maximum specific capacitance value of 97 F g–1, a phase angle value of 78°, and
a maximum charge–discharge coulombic efficiency of 88%.
Item Type: |
Article
|
Uncontrolled Keywords: |
Gel polymer electrolyte; hydrogel; supercapacitor; voltammetry; charge-discharge capacitance |
Subjects: |
Fuel Cells |
Divisions: |
UNSPECIFIED |
Depositing User: |
TTBD CECRI
|
Date Deposited: |
01 Apr 2012 17:47 |
Last Modified: |
01 Apr 2012 17:47 |
URI: |
http://cecri.csircentral.net/id/eprint/420 |
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