Formation and electromotive phenomena of hetero-junctions of oxide solid electrolytes
Katahira Koji; Yajima Tamotu; Koide Kunihiro; Yamamoto Kunji; Shimura Tetsuo; Iwahara Hiroyasu
Abstract:Formation of perovskite-type oxides on the surface of fluorite-type oxides by high temperature chemical reaction and their electrochemical properties were studied. A dense and tightly contacted thin layer of BaZrO3, SrZrO3, CaZrO3 and BaCeO3, SrCeO3-based solid solution could be formed on yttrium stabilized zirconia and yttrium doped ceria, respectively. The electromotive phenomena as an electrolyte of the gas cell using the ceramics behaved in a different manner from that of the non-coated cell. Using this character, new type hydrogen-sensing devices with the standard electrode of oxygen can be fabricated. Key Words:Hetero junction, Thin layer, Proton conductor, Perovokite, Fluorite, Concentration cell