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Electrodeposition Of Pyrrole And 3-(4-Tert-Butylphenyl)Thiophene Copolymer For Supercapacitor Applications, Binbin Yue, Caiyun Wang, Pawel Wagner, Yang Yang, Xin Ding, David L. Officer, Gordon G. Wallace

Faculty of Science, Medicine and Health - Papers: part A

The electropolymerization of pyrrole (Py), 3-(4-tert-butylphenyl)thiophene (TPT) monomer or the mixed Py and TPT monomers on stainless steel mesh substrate were performed in 1 M LiClO4/acetonitrile solution. A much lower potential of 0.75 V was required for the co-electropolymerization of Py and TPT, in sharp contrast to that of 1.20 V for poly(3-(4-tert-butylphenyl)thiophene) (PTPT) formation. The resultant homopolymers and copolymer were characterized with FESEM and FTIR, and assembled into supercapacitors to investigate their electrochemical performances. The copolymer electrode delivered the highest specific capacitance of 291 F g−1 at a scan rate of 5 mV s−1, in comparison with that of …