We provide in-depth insight into the electrochemical capacitive behaviour of multidimensional poly(3,4-ethylenedioxythiophene) (PEDOT) nanotubes (mPNTs) with unique surface substructures, such as nanonodules and nanorods (NR). NRs-mPNT had a capacitance of 153 F g^-1 in acidic electrolyte. They showed a 17% increase in specific capacitance when coupled to another pseudocapacitive component, namely, manganese dioxide (MnO₂). MnO₂-mPNTs were further tested in both symmetric and asymmetric cell configurations without using binders or conductive fillers.The asymmetric MnO₂-mPNTs (+)//RGO-CNFs ( ) cell exhibited better performances than other asymmetric or symmetric cells of the MnO₂-mPNTs/RGO-CNFs combination in terms of specific capacitance, cycling stability, and coulombic efficiency.