Year: 2000
Type: article
Abstract: Crystal stmctures of(Ba1 江＆)21n205耀(∬＝0．00，0．20，0．30，0。40，0．50)were analyzed and electrical conductivity were measure(1．The Rietveld results for(Ba1一ズL磁)21n205＋ズ(劣＝0．20，0．40)revealed that these oxides belonging to cubic P窺3吻space group．This result indicate(1that the oxide ion vacImcies distribute rImdomly in the cubic perovskite type structure．The electrical conductivities of(Ba1一πL衡)21n205÷x(卑二〇．20，0．40，0．50)did not show a sharp discontinuity・because the disorder phase of defective perovskite type stmcture was st＆bilized at low temperature by doping m3＋cations．The o】dde ion trImsference number of the(Ba1 江aκ)21n205耀determine(l by blocking method is l．00． K砂防醜 Brownmillerite，Perovskite，Oxide Ion，Crystal Structure l Intro(luction Recently，a sign雌αmt amount of work has been devoted to solid oxi〔1e fhel cells (SOFCs)an(i steam electrolyzers u廿Hzing oxide ion con(1uctors as elech・olyte。1・2)When the operating temperature is reduce(1 to inte㎜ediate-temperature range (700-800℃)， SOFCs could be constmcted by less costly materials for interconnectors，for exanlple alloys，an〔1technical advantages such as increase of reliability an(11ifeUme will be attained。
Source: Electrochemistry
Authors: Yoshiharu UCHIMOTO, Takeshi YAO, Hiromitsu TAKAGI, Toru INAGAKI, Hiroyuki YOSHIDA
Institutions: Kyoto University, Kansai Electric Power (Japan)
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2989488397