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为开发新型固体氧化物燃料电池电解质材料，利用甘氨酸燃烧法制备了La、Sm、Ca共掺杂的CeO2基电解质材料Ce0.8La0.03Sm0.17-xCax O2-δ(x=0.00、0.04、0.06、0.08 mol)，并对其晶体结构、微观形貌以及离子电导率进行系统分析.结果显示，该类电解质材料经800℃烧结2 h后呈纯相(立方萤石结构)；当x=0.04 mol、温度为800℃时，其电导率达到最大值，为0.056 S·cm-1；该电解质陶瓷片经1 400℃烧结10 h后结构较为致密，仅有少量闭气孔存在.研究结果表明，Ce0.8La0.03Sm0.17-xCax O2-δ是一种有潜力的SOFC电解质材料.
Abstract：In order to develop a new electrolyte of solid oxide fuel cell (SOFC),the La,Sm and Ca co-doped ceria-based electrolyte materials Ce0.8La0.03Sm0.17-xCa_xO2-δ(x=0.00、0.04、0.06、0.08 mol) were prepared by glycine combustion method.The crystal structure,microstructure and ionic conductivity were analyzed systematically.The XRD results show that the pure phase of electrolyte material is formed after sintering at 800℃for 2 h,and the crystal structure is cubic fluorite structure.The conductivity reached a maximum value of 0.056 S·cm-1at 800 ℃ when x=0.04 mol.The SEM results show that the electrolyte ceramic sheet has a relatively dense structure with a few of closed pores after sintering at 1 400℃for 10 h.Preliminary results indicate that Ce0.8La0.03Sm0.17-xCa_xO2-δ is a promising electrolyte material of SOFC.
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基本信息:
DOI：10.20212/j.issn.1008-2441.2025.06.005
中图分类号:TB321;TM911.4
引用信息:
[1]孟祥伟,朱彦卓.Ce_(0.8)La_(0.03)Sm_(0.17-x)Ca_xO_(2-δ)电解质材料的制备及离子导电性能研究[J].鞍山师范学院学报,2025,27(06):29-35.DOI:10.20212/j.issn.1008-2441.2025.06.005.
基金信息:
广东省特色创新项目（2023KTSCX076）; 韩山师范学院校级科研项目（QD202108,QD202318）