Night view of Simon Fraser University from David Novitski

Studies of the conductivity of ionomer membranes are essential because of their use in electrochemical devices and the need for low ionic resistances. Accurate measurement of specific conductivity poses a significant challenge in terms of experimental methodology. A.C. impedance spectroscopy is being used in our laboratory as a means for measuring the conductivity. 

Our studies are leading to materials with interesting bicontinous morphologies in which a percolation network of ionic sites is encapsulated by non-ionic domains to yield mechanically robust materials with high proton conductivity. 

Conductivity of proton exchange membranes as a function of temperature. 

Morphologies (TEMs) of ionically-conducting block copolymers prepared at SFU