| 中温固体氧化物燃料电池阴极材料Nd2-xSrxCuO4的制备与性能研究 |
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| 引用本文： | 郝举红,李 强,孙丽萍,赵 辉,霍丽华.中温固体氧化物燃料电池阴极材料Nd2-xSrxCuO4的制备与性能研究[J].无机化学学报,2009,25(10):1818-1822. |
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| 作者姓名： | 郝举红 李 强 孙丽萍 赵 辉 霍丽华 |
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| 作者单位： | 黑龙江大学化学化工与材料学院,功能无机材料化学省部共建教育部重点实验室,哈尔滨,150080 |
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| 基金项目： | 新世纪优秀人才支持计划基金、黑龙江省骨干教师，黑龙江省教育厅科学技术研究项目 |
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| 摘 要： | 采用固相法合成了类钙钛矿结构的中温固体氧化物燃料电池(IT-SOFC)阴极材料Nd2-xSrxCuO4(简称NSC,x=0.0～0.1).通过XRD和SEM对材料进行了表征.结果表明该阴极材料与电解质Ce0.9Gd0.1O1.9(CGO)在1 000℃烧结4 h后不发生化学反应,具有良好的化学相容性;且烧结后二者之间能形成良好的接触界面.利用交流阻抗谱研究了电极的性能.发现随着Sr掺杂量的增加,极化电阻逐渐减小,其中Nd1.93Sr0.07CuO4在空气中的极化电阻最小,750℃时仅为0.14 Ω·cm2.700℃时,电极反应的速率控制步骤为电极上发生的电荷转移过程.
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| 关 键 词： | 中温固体氧化物燃料电池 类钙钛矿结构氧化物 |
Synthesis and Performance of Nd2-xSrxCuO4 Cathode Materials for IT-SOFC |
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| HAO Ju-Hong,LI Qiang,SUN Li-Ping,ZHAO Hui and HUO Li-Hua.Synthesis and Performance of Nd2-xSrxCuO4 Cathode Materials for IT-SOFC[J].Chinese Journal of Inorganic Chemistry,2009,25(10):1818-1822. |
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| Authors: | HAO Ju-Hong LI Qiang SUN Li-Ping ZHAO Hui and HUO Li-Hua |
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| Institution: | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080,Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080,Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080,Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080 and Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080 |
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| Abstract: | Perovskite-type cathode materials Nd_(2-x)Sr_xCuO_4 (NSC) for intermediate temperature solid oxide fuel cell (IT-SOFC) were prepared with the conventional solid state reaction methods. These powders were characterized by XRD and SEM. The results showed that NSC has no reaction with Ce_(0.9)Gd_(0.1)O_(1.9) (CGO) at 1 000 ℃ in air and the electrode formed good contact with the electrolyte after sintered at 1 000 ℃ for 4 h. The electrochemical performance of the cathode was investigated using AC impedance spectroscopy. The polarization resistance decreased with the doping of strontium in the lattice. The optimum value of Nd_(1.93)Sr_(0.07)CuO_4 resulted in 0.14 Ω·cm~2 area specific resistance (ASR) at 750 ℃ in air. The charge transfer process was the rate-limiting step of the electrode reactions at 700 ℃ in air. |
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| Keywords: | Nd2-xSrxCuO4 |
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