Electrical phenomena in a hydrogen-containing heterogeneous system palladium-strontium cerate-barium-yttrium hydrocuprate

The proton conductivity of barium-yttrium hydrocuprate HxYBa2Cu3O7 + y (x l ess than or equal to 2, -0.1 less than or equal to y less than or equal to 0.1) was determined for the first time. The proton conductivity (10(-6) S c m(-1) at 470 K, with an activation energy of -0.6 eV) accounts for 0.1% of the total dc conductivity. Owing to the proton conductivity of strontium ce rate (HzSrCe0.9Y0.1O3 , z < 0.1) and hydrocuprate layers in the Pd/cerate/h ydrocuprate/cerate/Pd sandwich structure, this heterogeneous system exhibit s the properties of an electric accumulator with emf = 0.6-1.2 V. (C) 2000 MAIK "Nauka/Interperiodica".