A novel asymmetric pseudocapacitor based on poly(5,12-dihydrothieno [3 %26apos;,4 %26apos;:2,3][1,4]dioxocino[6,7-b]quinoxaline) coated graphite anode and poly(ethylenedioxythiophene) coated graphite cathode

作者：Gullu Mustafa^*; Yigit Deniz

来源：Synthetic Metals, 2012, 162(15-16): 1434-1442.

DOI：10.1016/j.synthmet.2012.05.028

• Pseudocapacitors
• Conducting polymers
• Polymer based supercapacitor

We report here, the supercapacitive performance of a novel conducting polymer, namely, poly(5,12-dihydrothieno[3%26apos;,4%26apos;:2,3][1,4]dioxocino[6,7-b]quinoxaline) (pTDQ), in an asymmetric n/p type pseudocapacitor cell. This novel polymer is coated on a graphite electrode and used in an asymmetric cell as a p-doped anode against poly(ethylenedioxythiophene) (pEDOT) coated graphite, an n-doped cathode. Supercapacitive performance of the asymmetric pseudocapacitor is evaluated by cyclic voltammetry (CV) and galvanostatic charge/discharge techniques in different supporting electrolyte-solvent systems. Performance tests show that this n/p type asymmetric pseudocapacitor has better supercapacitive performance; having the highest specific capacitance value of 213.7 F g(-1) in the presence of 0.1 M tetrabutylammonium tetrafluoroborate (Bu4NBF4) as supporting electrolyte. Besides, specific energy value of the asymmetric pseudocapacitor is calculated as 31.7 Wh kg(-1). AC impedance spectroscopy results strengthen the supercapacitance value of the asymmetric pseudocapacitor cell and indicate that the pseudocapacitor cell is more suitable for the low frequency range applications.

• 出版日期2012-9