Abstract
The electrochemical behaviour of the polymer-based cell Pb/(PEO) 40. Pb(ClO 4) 2/Pb has been investigated over the temperature range 20–160°C by means of impedance spectroscopy and dc polarization methods. The bulk resistance and the charge transfer resistance display a linear trend in an Arrhenius plot. The transference numbers have been evaluated by an electrochemical method, and compared with those obtained from a preliminary experiment with Tubandt's method. These measurements indicate that both cations and anions are mobile, with a transference number for Pb 2+ lower than 0.1 between 70 and 130°C.
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