Abstract

Abstract The interface between a lithium anode and a polymer solid electrolyte was investigated by means of the complex impedance technique. The interfacial resistance was found to result mainly from a charge transfer process having an activation energy of 0.77 eV, which is in agreement with that reported in a previous work. The change in interfacial resistance during the temperature cycle was interpreted in terms of a reduction in contact area at the interface. The interfacial capacitance showed a maximum at the melting point of PEO. This maximum was explained in terms of the carrier concentration.

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