Publication number: 20130216938
Abstract: The material according to the invention is based on a material having the composition Ln6WO12 with a defect fluorite structure in which the cations, at least partially, have been substituted in a defined manner in the A and/or B position. It has the following composition: Ln1-xAx)6(W1-yBy)zO12-? where Ln=an element from the group (La, Pr, Nd, Sm), A=at least one element from the group (La, Ce, Pr, Nd, Eu, Gd, Tb, Er, Yb, Ca, Mg, Sr, Ba, Th, In, Pb), B=at least one element from the group (Mo, Re, U, Cr, Nb), 0?x?0.7 and 0?y?0.5, wherein, however, either x or y>0, 1.00?z?1.25 and 0???0.3. The mixed proton-electron conducting material exhibits an improved mixed conductivity, good chemical stability as well as good sintering properties, and can be used in particular as a material for a hydrogen-separating membrane or as a electrolyte at higher temperatures.
Type:
Application
Filed:
June 28, 2011
Publication date:
August 22, 2013
Applicants:
UNIVERSIDAD POLITECNICA DE VALENCIA, FORSCHUNGSZENTRUM JULICH GMBH
Inventors:
Wilhelm Albert Meulenberg, Mariya Ivanova, Hans Peter Buchkremer, Detlev Stoever, Jose Manuel Serra Alfaro, Sonia Escolastico