高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

Ba1-xPrxCoO3阴极材料在中温SOFC中的应用

王金霞1, 姚瑛1, 许大鹏2, 苏文辉2   

    1. 宁波工程学院电子与信息工程学院, 宁波 315016;
    2. 吉林大学物理学院凝聚态物理系, 长春 130023
  • 收稿日期:2007-03-09 修回日期:1900-01-01 出版日期:2007-11-10 发布日期:2007-11-10
  • 通讯作者: 王金霞

Application of Ba1-xPrxCoO3 Cathode Materials in IT-SOFC

WANG Jin-Xia1 *, YAO Ying1, XU Da-Peng2, SU Wen-Hui2   

    1. School of Electronic and Information Engeering, Ningbo University of Technology, Ningbo 315016, China;
    2. Deparment of Condensed Matter Physics, Jilin University, Changchun 130021, China
  • Received:2007-03-09 Revised:1900-01-01 Online:2007-11-10 Published:2007-11-10
  • Contact: WANG Jin-Xia

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摘要： 采用湿化学法合成系列阴极材料Ba1-xPrxCoO3(x=0.3, 0.4, 0.5, 0.6). TG-DTA和烧结曲线测试结果表明, 在950 ℃时样品发生相变, 形成了晶相. 样品的SEM结果显示, Pr离子掺杂到一定量时, 将抑制晶粒长大, 减少阴极的孔洞率. 单电池测量结果表明, 用x=0.5的阴极材料制成的单电池表现出最好的输出特性, 具有最大短路电流密度和最大输出功率密度, 是掺杂Y的BaCeO3基电解质的一种优化配比阴极材料.

关键词: 中温固体氧化物燃料电池(IT-SOFC), 阴极, 热重-差热, 烧结曲线

Abstract: Cathode materials Ba1-xPrxCoO3(x=0.3, 0.4, 0.5, 0.6) were prepared with wet chemical method. TG-DTA and sintering curves show that the materials were crystallized in a single perovskite phase at around 950 ℃. The SEM images show that the prohibition of the particle growth and the decrease of the hole ratio were produced when the increase of Pr ions dopant to a certain quantity. The results of the single cell tests show that the fuel cell with the cathodes x=0.5 have the best output performance and the greatest short current density and the maximum output power density, so it has more proper ratio than the other samples and fit Y3+-doped BaCeO3 based solid electrolyte material perfectly.

Key words: IT-SOFC, Cathode, TG-DTA, Sintering Curve

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