INVESTIGATION OF IONIC CONDUCTIVITY IN TRACK-ETCHED NANOPOROUS POLYIMIDE MEMBRANES USING A MICROWAVE TECHNIQUE

摘要

The in situ characterization of membranes for fuel cell applications is a rather complex and time-consuming procedure. It is therefore interesting to develop simple, short, and reproducible characterization tests and to limit in situ measurement only to the most promising materials. In this paper, a new characterization method is proposed to extract the DC ionic conductivity of track-etched nanoporous polyimide membranes from microwave measurements.