For the first time, motion of the ions of polymer gel electrolytes separated by an irradiated porous membrane has been studied with a desktop set-up. Two polymer gel electrolytes, viz., lithium polymer gel electrolyte and magnesium gel electrolyte, have been synthesized and separated by a porous PET (polyethylene terephthalate) film. The I-V behavior of such a system has been found to exhibit chaotic motion. The chaotic motion of ions is influenced by parameters such as, pore size, pore shape, concentration of electrolytes, applied voltage etc. By choosing pore size as one of the parameters, chaotic motion has been trapped using a modified Sprott circuit. The value of Lyapunov exponent has confirmed the chaotic behavior of the electrochemical system. (C) 2012 Elsevier B.V. All rights reserved.