The performance of a polymer redox supercapacitor based on poly(dithie
no[3,4-b : 3',4'-d] thiophene) in liquid and in polymer gel electrolyt
e was tested for capacity, energy density, power density and self-disc
harge. The results are very promising and demonstrate the viability of
a symmetric supercapacitor based on an n- and p-doped electronically
conducting polymer.