首页> 外文期刊>Journal of power sources >Investigation Of Ba_(1-x)sr_xco_(0.8)fe_(0.2)o_(3-δ) As Cathodes For Low-temperature Solid Oxide Fuel Cells Both In The Absence And Presence Of Co_2
【24h】

Investigation Of Ba_(1-x)sr_xco_(0.8)fe_(0.2)o_(3-δ) As Cathodes For Low-temperature Solid Oxide Fuel Cells Both In The Absence And Presence Of Co_2

机译:Co_2的存在与否均研究Ba_(1-x)sr_xco_(0.8)fe_(0.2)o_(3-δ)作为低温固体氧化物燃料电池阴极的研究

获取原文
获取原文并翻译 | 示例
       

摘要

Ba_(1-x)Sr_xCo_(0.8)Fe_(0.2)O_(3-δ) (BSCF)(0≤x≤ 1) composite oxides were prepared and tested as cathodes for low-temperature solid oxide fuel cells (SOFCs) both in the absence and presence of CO_2. It is found that the BSCF cathodes in the whole range of strontium doping levels show promising performance at 500-600 ℃ in the absence of CO_2, among which the SrCo_(0.8)Fe_(0.2)O_(3-δ) (SCF) cathode gives the highest power density while BaCo_(0.8)Fe_(0.2)0_(3-δ) (BCF) cathode shows the lowest performance. The impedance analysis reveals that both the ohmic resistance and polarization resistance of the fuel cell increases when the strontium content decreases. It is believed that the microstructure and electrical conductivity simultaneously affect the process of oxygen reduction. The presence of CO_2 deteriorates the BSCF performance by adsorbing on the cathode surface and thus obstructing the oxygen surface exchange reaction. The CO_2 exerts a more intense influence on BSCF with higher barium content.
机译:制备了Ba_(1-x)Sr_xCo_(0.8)Fe_(0.2)O_(3-δ)(BSCF)(0≤x≤1)复合氧化物并作为低温固体氧化物燃料电池(SOFC)的阴极进行了测试在没有CO_2的情况下研究发现,在不存在CO_2的情况下,整个锶掺杂水平在500-600℃下表现出良好的性能,其中SrCo_(0.8)Fe_(0.2)O_(3-δ)(SCF)阴极给出最高的功率密度,而BaCo_(0.8)Fe_(0.2)0_(3-δ)(BCF)阴极显示出最低的性能。阻抗分析表明,当锶含量降低时,燃料电池的欧姆电阻和极化电阻都增加。据信,微观结构和电导率同时影响氧还原的过程。 CO_2的存在通过吸附在阴极表面上而使BSCF性能下降,从而阻碍了氧表面交换反应。钡含量较高时,CO_2对BSCF的影响更大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号