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Conducting polymer‐based electrochemical redox supercapacitors using proton and lithium ion conducting polymer electrolytes
Author(s) -
Hashmi S. A.,
Latham R. J.,
Linford R. G.,
Schlindwein W. S.
Publication year - 1998
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199809)47:1<28::aid-pi3>3.0.co;2-c
Subject(s) - polypyrrole , materials science , supercapacitor , cyclic voltammetry , electrolyte , conductive polymer , lithium (medication) , capacitance , redox , polymer , electrochemistry , ethylene glycol , polymer capacitor , inorganic chemistry , electrolytic capacitor , electrode , polymer chemistry , chemical engineering , chemistry , composite material , polymerization , medicine , engineering , metallurgy , endocrinology
Polypyrrole‐based solid‐state redox supercapacitors have been constructed using proton and lithium ion conducting polymer electrolytes: poly(vinyl alcohol) (PVA)–H 3 PO 4 , and poly(ethylene oxide) (PEO)–LiCF 3 SO 3 plasticized with poly(ethylene glycol) (PEG). The capacitors have been characterized using a.c. impedance, cyclic linear sweep voltammetry and galvanostatic charge–discharge methods. Redox capacitors based on polypyrrole show large values of capacitance (about 1·5–5·0 mFcm ‐2 ) (equivalent to a single electrode capacitance of 40–84 Fg ‐1 of polypyrrole) for both the electrolytes. The values of capacitance have been found to be stable up to 1000 charge–discharge cycles between 0 and 1·0 V. © 1998 Society of Chemical Industry