Ionic conductivity and dielectric studies of acid doped cellulose acetate propionate solid electrolyte for supercapacitor
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Date
2016
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John Wiley and Sons Inc
Abstract
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<inf>3</inf>PO<inf>4</inf> 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.
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Keywords
Capacitance, Cellulose, Cyclic voltammetry, Differential scanning calorimetry, Electric impedance, Electric impedance measurement, Electrolytic capacitors, Ionic conductivity, Supercapacitor, Volatile fatty acids, AC impedance method, Acid doped, Cellulose acetate propionate, Dielectric studies, FTIR, High conductivity, Long tail, Poly(ethylene glycol)(PEG), Property, Specific capacitance, Solid electrolytes
Citation
Polymer Engineering and Science, 2016, 56, 2, pp. 196-203