Hybrid nanocomposites were prepared on the basis of polyaniline (PAn) and polypyrrole (PPy) with functionalized multiwall carbon nanotubes (CNTs). It was shown that the method of functionalization of the CNT and the nature of the polymer have a substantial effect on the structure and electrochemical characteristics of the synthesized nanocomposites. It was established that the conductivity and the capacity characteristics of the PPy/CNT nanocomposites are determined largely by the content of carbon nanotubes, whereas for the PAn/CNT materials they are also determined by the method of functionalization of the CNT. It was shown that the highest capacity (366 and 294 F/g) is characteristic of the nanocomposites based on PAn and CNT (N-CNT) functionalized with the surface catalyst Aliquat 336.In recent years electrically conducting polymers (ECPs) have attracted considerable interest as electrode materials for the creation of various energy-converting devices and supercapacitors in particular thanks to their inherent conductivity and their ability to undergo reversible redox transitions [1,2]. At the same time the main drawback of supercapacitors based on ECPs is their relatively low stability during repeated charge/discharge cycles since they can lose their conductivity as a result of volume changes that occur during cycling [3]. On the other hand, the electrochemical activity of the ECP is limited to a specific range of potentials, and this can give rise to their degradation during over-oxidation.Along with ECPs promising materials for the creation of a new generation of supercapacitors are carbon nanotubes (CNTs), which have a fairly large surface area, relatively high conductivity, and excellent mechanical characteristics [4]. Compared with ECPs, however, they have appreciably lower specific capacity [4,5]. In view of this the creation of new composite nanomaterials based on ECPs and CNTs for the electrodes of supercapacitors that would combine the best characteristics of both components may prove extremely attractive [1,3,6].On account of their insolubility simple mechanical mixing of the CNT and ECP does not give the desired results since the CNTs are not uniformly dispersed in the polymeric matrix (also because the initial CNTs are present in the form of bundles) 204