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http://dx.doi.org/10.7473/EC.2012.47.4.292

Electrochemical Properties of Activated Carbon Capacitor Adopting a Proton-conducting Hydrogel Polymer Electrolyte  

Latifatu, Mohammed (Division of Applied Chemistry and Biotechnology, Hanbat National University)
Kim, Kwang Man (Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI))
Kim, Yong Joo (Division of Applied Chemistry and Biotechnology, Hanbat National University)
Ko, Jang Myoun (Division of Applied Chemistry and Biotechnology, Hanbat National University)
Publication Information
Elastomers and Composites / v.47, no.4, 2012 , pp. 292-296 More about this Journal
Abstract
An electric double-layer capacitor (ELDC) of activated carbon electrode is prepared using a proton-conducting hydrogel polymer electrolyte, which is composed of poly(vinyl alcohol), silicotungstic acid, $H_3PO_4$, and deionized water. A solid film by evaporating the hydrogel polymer electrolyte is also prepared for comparison. The hydrogel polymer electrolyte also acts as a separator with the thickness of about $80{\mu}m$ and the room-temperature ionic conductivity of $10^{-2}S\;cm^{-1}$. The EDLC containing the symmetric electrodes of activated carbon shows the specific capacitance of $58F\;g^{-1}$ at $100mV\;s^{-1}$ with a good cycle life, implying that the hydrogel polymer electrolyte is very promising for use in EDLCs.
Keywords
electric double-layer capacitor; activated carbon electrode; polymer electrolyte; electrochemical properties;
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