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Electrochemical Synthesis and Characterization of Interpenetrating Networks of Conducting Polymers for Enhanced Charge Storage
Author(s) -
Admassie Shimelis,
Elfwing Anders,
Inganäs Olle
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201500533
Subject(s) - materials science , characterization (materials science) , electrochemistry , polymer , conductive polymer , electrochemical energy storage , nanotechnology , charge (physics) , chemical engineering , supercapacitor , composite material , electrode , chemistry , physics , quantum mechanics , engineering
A supercapacitor electrode consisting of an interpenetrating network of poly(aminoanthraquinone) (PAAQ) and poly(3,4‐ethylenedioxythiophene) (PEDOT) is synthesized by a simple two‐step galvanostatic deposition and characterized by electrochemical methods. By electrodepositing PEDOT on top of PAAQ, it is possible to access the quinones in PAAQ and as a result the specific capacitance of PAAQ increases from 90 to 383 F g −1 and also significantly improves the charge‐storage capacity from 25 to 106 mAh g −1 at a discharge current of 1 A g −1 . These values are also significantly higher than most reported values for PEDOT and hybrids. Moreover, the hybrid material shows excellent stability with 91% of the initial capacitance being retained after 2000 cycles at a discharge rate of 2 A g −1 .