Proton conduction of new brownmillerite type compounds Ba2(Zn2/3B1/3)2O5 (B= Nb and Ta) and Ba2(Zn3/4W1/4)2O5
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In order to obtain high ionic conducting materials based on perovskite structure for the electrolyte of Solid Oxide Fuel Cells (SOFCs), Ba2(Zn2/3B1/3)2O5 (B= Nb and Ta) and Ba2(Zn3/4W1/4)2O5 systems were synthesized by solid state reaction. Powder X-ray diffraction analysis revealed that the samples with B = Nb and Ta in Ba2(Zn2/3B1/3)2O5 had a cubic and a hexagonal perovskite-type structures, respectively, and that Ba2(Zn3/4W1/4)2O5 had a cubic NaCl structure. These materials exhibited the uptake of large amount of H2O and the appearance of high proton conductivity.
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一般社団法人 日本MRS | 論文
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