Abstract
From EMF measurements it can be concluded that there is no significant electronic conductivity in KHF 2. In the relatively good conducting high temperature β-phase the following transport numbers are found: t K≈0,25 and t F≈0,75 while t H≈0 as was concluded from changes in chemical composition on electrolysis in Hittorf-Tubandt type experiments. From current-time characteristics it follows that in the low-conducting low temperature α-phase, the proton is the only mobile charge carrier in this phase, i.e. t H≈1. It also proved that the d.c. conductivity of single crystals measured with hydrogen permeable electrodes coincides with the zero-frequency conductivity found by extrapolation of a.c. data.
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