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This paper describes the construction of flexible symmetric and asymmetric supercapacitors made ofcarbon cloth, polyaniline and carbon nanotubes. The electrode materials (nanostructures of polyanilinecarbonnanotubes, PANI-CNT) were supported on carbon cloth acting as current collector. PANI-CNTnanostructures were synthesized through an oxidative polymerization process in the monomer (aniline)acid solution with the presence of a surfactant and the addition of multi-walled CNT. The CNT wereused with and without pretreatment. The cells electrolyte was H2SO4 0.5 M and the selected potentialrange was 1 V. In order to test their behavior, the different cells configurations were evaluated byelectrochemical techniques. Polyaniline nanostructures and polyaniline-carbon nanotubes nanocompositeswere used to make the negative and/or positive electrodes of the cell. The cathode in theasymmetric supercapacitors was always carbon cloth/carbon black. The behavior of the arrayed supercapacitorswas evaluated by cyclic voltammetry, between 0.0 and 1.0 V at different scan rates (10e100 mVs1), as well as with galvanostatic charge/discharge runs at current densities between 0.3 and6.7 mAcm2. At a constant current density of 0.3 mA cm2, a specific capacitance value of 1275 Fg1 wasobtained for a symmetric assembly using both electrodes prepared with polyaniline and carbon nanotubesnanocomposites. When the set was asymmetric, being the positive electrode made of polyanilineand carbon nanotubes nanocomposites, the specific capacitance value was 1566 Fg1. For the latter array,the specific power and energy density values were 125 Wkg1 and 217 Whkg1 at 0.25 Ag1, and 2502Wkg1 and 71 Whkg1 at 5.0 Ag1. These results suggest a good energy transfer capacity. Moreover,symmetric and asymmetric supercapacitors demonstrated a high stability over 1000 cycles obtaining acapacitance retention of more than 85%.