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Electrochemical Characterization of Chemically Synthesized Polythiophene Thin Films: Performance of Asymmetric Supercapacitor Device
Author(s) -
Patil B. H.,
Patil S. J.,
Lokhande C. D.
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400284
Subject(s) - polythiophene , cyclic voltammetry , materials science , supercapacitor , thin film , raman spectroscopy , electrochemistry , chemical engineering , scanning electron microscope , polymerization , thiophene , electrode , analytical chemistry (journal) , conductive polymer , nanotechnology , polymer , chemistry , organic chemistry , composite material , physics , engineering , optics
Polythiophene (PT) thin films have been prepared by chemical bath deposition (CBD) method at room temperature (300 K) via oxidative polymerization of thiophene using ammonium peroxodisulfate (APS) as an oxidizing agent. Globular particulates of PT are deposited on the stainless steel and glass substrates. The morphology and chain structure of PT are studied using scanning electron microscopy (SEM) and Raman spectroscopy techniques, respectively. The electrochemical behavior of PT electrode is studied using cyclic voltammetry and galvanostatic chargedischarge studies. PT thin film shows maximum specific capacitance of 300 F g −1 at 5 mV s −1 in 0.1 M LiClO 4 /PC electrolyte. The asymmetric device formed with PT and graphite shows supercapacitive properties useful in the power applications.