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中温固体氧化物燃料电池阴极材料Sr_(0.95)Y_(0.05)CoO_(3-δ)的制备及性能研究 被引量：3

Preparation and Performance of Sr_(0.95)Y_(0.05)CoO_(3-δ) Cathode Material for Intermediate-temperature Solid Oxide Fuel Cells
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摘要 采用柠檬酸—EDTA混合溶胶—凝胶法合成了中温固体氧化物燃料电池阴极材料Sr0.95Y0.05CoO3δ-(SYCO).结果表明SYCO为立方钙钛矿结构.SYCO的导电行为是金属导电,当温度为100℃时电导率达到最大,其值为837 S.cm-1,当温度为800℃时电导率达到最小,其值为247 S.cm-1.交流阻抗谱结果表明,电极反应的速率控制步骤主要是由电极上发生的电荷迁移引起的,其中SYCO电极在800℃时极化电阻为0.034Ω.cm2.进行了以电解质为支撑体的单电池性能测试,单电池在800℃时,功率密度达到306 mW/cm2. Cathode material Sr0.95Y0.05CoO3-δ（SYCO） for intermediate-temperature solid oxide fuel cell（IT-SOFC） was prepared by EDTA-ecitrate complexing sol-gel method.The sample had a cubic perovskite structure.It was metallic in nature and the maximum and minimum conductivities were 837 S·cm-1 at 100℃ and 247 S·cm-1 at 850℃.AC impedance spectroscopy measurements were used to study the SYCO cathode performance.The charge transfer process was found to be the main rate-limiting step of the electrode performance.The polarization resistance for the SYCO cathode was as low as 0.034 Ω·cm2 at 800℃.The electrolyte-supported fuel cell generated good performance with the maximum power density of 306 mW/cm2.
作者 孟祥伟 吕世权 张利英 张立夫 杨景海
机构地区 吉林师范大学物理学院 吉林省榆树市环城乡农机管理站 吉林省榆树市农机监理站
出处 《吉林师范大学学报（自然科学版）》 2011年第4期31-33,38,共4页 Journal of Jilin Normal University:Natural Science Edition
基金 吉林省教育厅"十一五"科学技术研究项目(20100145)
关键词 阴极 固体氧化物燃料电池 电导率 电化学性能 cathode solid oxide fuel cells electrical conductivities electrochemical performance
分类号 TM911.42 [电气工程—电力电子与电力传动]
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参考文献10

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同被引文献24

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吉林师范大学学报（自然科学版）
2011年 第4期

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