固体氧化物燃料电池La0.7Sr0.3Cr0.5Mn0.5O3-δ-SDC复合阳极性能研究

稀土, 2013, 34(3): 7-12.

固体氧化物燃料电池La0.7Sr0.3Cr0.5Mn0.5O3-δ-SDC复合阳极性能研究

安雷 ^1, , 张玢 ^2, , 郜建全 ^3, , 赵文广 ^4, , 安胜利 ^5,

1.内蒙古科技大学材料与冶金学院,内蒙古包头014010

2.内蒙古科技大学材料与冶金学院,内蒙古包头014010

3.东北大学材料与冶金学院,辽宁沈阳114010

4.内蒙古科技大学材料与冶金学院,内蒙古包头014010

5.内蒙古科技大学材料与冶金学院,内蒙古包头014010

基金项目: 内蒙古自然科学基金资助项目(2010ZD04) 国家自然科学基金项目资助(50664004)

关键词： SOFC , LSCM , SDC , 复合阳极 , 钙钛矿结构

Performance of Solid Oxide Fuel Cell with La0.7Sr0.3Cr1-xMnxO3-δ-SDC Anode

AN Lei ^1, , ZANG Bin ^2, , GAO Jian-quan ^3, , ZHAO Wen-guang ^4, , AN Sheng-li ^5,

1.内蒙古科技大学材料与冶金学院,内蒙古包头014010

2.内蒙古科技大学材料与冶金学院,内蒙古包头014010

3.东北大学材料与冶金学院,辽宁沈阳114010

4.内蒙古科技大学材料与冶金学院,内蒙古包头014010

5.内蒙古科技大学材料与冶金学院,内蒙古包头014010

Keywords： SOFC , LSCM , SDC , composite anode , perovskite structure

利用溶胶-凝胶法制备了La0.7Sr0.3Cr0.5Mn0.5O3-δ (LSCM)阳极粉体.X射线衍射(XRD)分析结果显示,在1000℃下焙烧4h处理后,粉体为单一的钙钛矿相结构.应用单向压力成型方法、空气中1450℃下烧结8h制备了Ce0.8Sm0.2O1.9(SDC)为电解质片,应用丝网印刷方法在SDC电解质两侧分别涂覆La0.7 Sr0.3 Cr0.5 Mn0.5 O3-δ阳极和Pr0.6Sr0.4Co0.8Fe0.2O3-δ-SDC(PSCF-SDC)复合阴极,组成电解质支撑型固体氧化物燃料单电池.扫描电镜(SEM)观察显示,制备的电解质致密,阳极和阴极孔隙大小分布均匀,阳极厚度约为20μm,阴极厚度为10μm.用湿氢气作燃料,在800℃下获得的最大输出功率为232.84 mW/cm2,短路电流为919.84 mA/cm2.为了提高LSCM阳极材料催化活性,阳极中掺入少量SDC构成复合阳极.La0.7Sr0.3Cr0.5Mn0.5 O3-δ-10％ SDC复合阳极的单电池输出功率明显提高,最大输出功率为340 mW/cm2.

参考文献

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