Decomposition of La₂NiO₄ in Sm_0.2Ce_0.8O₂-La₂NiO₄ composites for solid oxide fuel cell applications

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• 作者：Deniz Cetinp>ap> ; Sophie Poizeaup>bp> ; John Pietrasp>bp> ; Srikanth Gopalanp>ap>p> ; p>p>cp>p> ; p>p>sgopalan@bu.edup>
• 关键词：Lanthanum nickelate ; Samarium doped ceria ; Phase decomposition ; Solid oxide fuel cells ; Composite cathodes
• 刊名：Solid State Ionics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：300
• 期：Complete
• 页码：91-96
• 全文大小：1486 K
• 卷排序：300

文摘

The stability of La2NiO4 + δ (LNO) is examined in LNO-doped ceria composites. XRD patterns show that LNO decomposes in the composites upon calcination at 1300 °C. The decomposition product, namely La2O3, dissolves in the ceria phase. Coefficients of thermal expansion confirm the decomposition of the LNO phase. Low LNO volume fractions in these composites are not suitable for SOFCs.