BR- IONIC-CONDUCTIVITY FOR PBBR2-BASED SOLID-ELECTROLYTE

The electrical conductivity of (1 - x)PbBr2 . xKBr solid electrolytes is enhanced on increasing x to x = 0.02. The maximum conductivity, 2.7 x 10(-6) S . cm(-1) at 298 K was obtained for x = 0.02. The transfere nce number for the Br- ion is almost equal to 1, which was determined by the Tubandt's method, dc conductivity with Au electrodes, and the e lectromotive force of a Br-2 gas concentration cell. The Ba-based syst em, (1 - x)BaBr2 . xKBr solid electrolyte, has a lower conductivity co mpared with that for the Pb-based system.