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Ionic conductivity and dielectric studies of acid doped cellulose acetate propionate solid electrolyte for supercapacitor
Author(s) -
Sudhakar Yethadka Narahari,
Krishna Bhat Denthaje,
Selvakumar Muthu
Publication year - 2016
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24243
Subject(s) - materials science , electrolyte , supercapacitor , ethylene glycol , ionic conductivity , conductivity , dielectric , chemical engineering , cellulose acetate , cyclic voltammetry , capacitance , analytical chemistry (journal) , cellulose , electrode , chemistry , organic chemistry , electrochemistry , optoelectronics , engineering
Phosphoric acid doped cellulose acetate propionate (CAP) consisting of poly(ethylene glycol) (PEG) as plasticizer was investigated. Ionic conductivities and dielectric studies were carried at different temperature with varying concentration of H 3 PO 4 using AC impedance method. The highest conductivity was 8.1 × 10 −4 S cm −1 at 343 K and a long tail was featured in dielectric studies indicating good capacitance nature of the electrolyte. Interactions between added constituents were observed in FTIR and differential scanning calorimetry studies. Thin and compact fabricated supercapacitor demonstrated specific capacitance of 64 F g −1 using cyclic voltammetry. Furthermore, the supercapacitor properties like AC impedance and charge‐discharge were studied. Stability was up to 96% at 1000th cycle. POLYM. ENG. SCI., 56:196–203, 2016. © 2015 Society of Plastics Engineers