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The methodology of PEM conductivity measurements is discussed for examples of literature data and results of the experiments, carried out in this study. It is shown here that a simple two-electrode cell proposed in this work, operated at frequencies of 1 to 10 7 Hz reproducibly gives a response typical for a solid electrolyte, and therefore is easily rationalised in terms of equivalent circuits...
Comparative studies of membranes prepared using different solvents, have shown that the casting solvent plays a significant role, affecting their proton conductivity and mechanical strength. It has been found that using DMF strongly decreases the membrane conductivity in comparison with other solvents studied. The 1 H NMR results yield an insight into the mechanism of this effect, evidencing...
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