首页> 外文期刊>Heat Transfer Engineering >Structural Features and Transport Properties of La(SrJFe_(1-x)Ni_xO_(3-δ)-Ce_(0.9)Gd_(0.1)O_(2-δ)Nanocomposites-Advanced Materials for IT SOFC Cathodes
【24h】

Structural Features and Transport Properties of La(SrJFe_(1-x)Ni_xO_(3-δ)-Ce_(0.9)Gd_(0.1)O_(2-δ)Nanocomposites-Advanced Materials for IT SOFC Cathodes

机译:La(SrJFe_(1-x)Ni_xO_(3-δ)-Ce_(0.9)Gd_(0.1)O_(2-δ)纳米复合材料的结构特征和输运性质-用于IT SOFC阴极的先进材料

获取原文
获取原文并翻译 | 示例
           

摘要

Mixed ionic-electronic conducting nanocomposites comprising complex oxides - perovskite (lanthanum-strontium nickelate-ferrite [LSFN]) and gadolinium-doped ceria (GDC) have been prepared via ultrasonic dispersion of nanocrystalline powders of LSFN_x and GDC in organic solvent with addition of surfactant, followed by drying and sintering up to 1300℃. Their structural and surface properties have been studied by x-ray diffraction, ultraviolet-visible (UV-vis) electron spectroscopy, transmission electron microscopy with elemental analysis, and x-ray photoelectron spectroscopy. Results of impedance spectroscopy, oxygen isotope exchange, O_2 temperature-programmed desorption, weight, and conductivity relaxation experiments have revealed a strong positive effect of perovskite-fluorite nanodomain interfaces in composite on the oxygen mobility and reactivity. Testing in wet H_2/air feeds for a button-size cell with functionally graded LSFN_(0.4)-GDC cathode layer supported on a thin YSZ layer covering Ni/YSZ cermet has demonstrated high and stable performance, promising for the practical application in the intermediate temperature range.
机译:通过在有机溶剂中添加表面活性剂,将LSFN_x和GDC纳米晶体粉末超声分散在有机溶剂中,制备了包含复合氧化物钙钛矿(镧锶镍铁氧体[LSFN])和掺-二氧化铈(GDC)的混合离子电子导电纳米复合材料。 ,然后干燥并烧结至1300℃。它们的结构和表面性质已通过X射线衍射,紫外可见(UV-vis)电子光谱,具有元素分析的透射电子显微镜和X射线光电子能谱进行了研究。阻抗谱,氧同位素交换,O_2温度程序解吸,重量和电导率弛豫实验的结果表明,复合物中钙钛矿-萤石纳米域界面对氧迁移率和反应性具有很强的积极作用。在湿H_2 /空气进料中对纽扣型电池进行测试,该纽扣型电池具有功能梯度LSFN_(0.4)-GDC阴极层,该阴极层支撑在覆盖Ni / YSZ金属陶瓷的YSZ薄层上,具有较高的性能和稳定的性能,有望在中间体中实际应用温度范围。

著录项

  • 来源
    《Heat Transfer Engineering》 |2013年第12期|904-916|共13页
  • 作者单位

    Boreskov Institute of Catalysis SB RAS, pr. Lavrentieva, 5, Novosibirsk 630090, Russia;

    Tomsk State University, Tomsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia;

    Institute of Solid State Chemistry and Mechanochemistry of SB RAS, Novosibirsk, Russia;

    Institute of Solid State Chemistry and Mechanochemistry of SB RAS, Novosibirsk, Russia;

    Environmental Earth Science Department, Eastern Connecticut State University, Willimantic, Connecticut, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
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