2007 Volume 75 Issue 12 Pages 958-963
One of the poly (aminoquinoxaline) compounds series, poly (2,3-dithienyl-5-aminoquinoxaline), P(AQX-06) has high potential as an electrochemical capacitor electrode materials. In the tetraethylammonium tetrafluoroborate (TEABF4) acetonitrile media, P(AQX-06)/carbon felt electrode showed electrochemical redox activity at potential window between −1.8 and 1.5 V vs. Ag wire. First, specific capacity of P(AQX-06) was lower level, but it gradually rose to reach at 134 Ah kg−1 (210 Fg−1) after 3,600 cycling. Such high capacity was maintained after further 2,000 cycling. The charge utilization of P(AQX-06)/carbon felt electrode showed 62%, which is higher level than other conductive polymer materials. By SEM analysis, a lot of pores are observed on the surface of the electrode after the cycling.
