Electrochemically formed thin film polyaniline (PANI) anode and lead dioxide (PbO2) cathode, obtained from sulfuric acid solution, for potential applications as electrode materials in PANI vertical bar H2SO4 vertical bar PbO2 aqueous based rechargeable power sources, have been studied using cyclic voltammetry and galvanostatic techniques. Based on the investigations of half cell reactions, the simulation of the charge/discharge characteristic of the possible cell has been done. (C) 2008 Elsevier B.V. All rights reserved.