Nonstoichiometric Y-substituted SrTiO3 materials as anodes for solid oxide fuel cells

作者：Ma Qianli^*; Tietz Frank; Stoever Detlev

来源：Solid State Ionics, 2011, 192(1): 535-539.

DOI：10.1016/j.ssi.2010.03.027

• Ceramic
• Y-substituted strontium titanate
• Perovskite
• Solid oxide fuel cells
• Anode material
• Electrical conductivity

Nonstoichiometric yittrium-substituted SrTiO3 samples with a nominal composition of SrxY0.07TiO3 +/-delta (x = 0.87-1.01) and Sr0.895Y0.07TixO3-delta (x = 1.00-1.20) were prepared and investigated. Phase impurities were found in samples with too high A-site or B-site deficiency. The electrical properties of the samples sintered in reducting atmosphere at different temperatures were analyzed with a view to their potential use as anode materials for solid oxide fuel cells (SOFCs). The redox properties of selected samples were investigated in detail. Samples with small A-site deficiency were considered to be the best candidates for SOFC anode materials.

• 出版日期2011-6-16