...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of power sources >Investigation into the effect of molybdenum-site substitution on the performance of Sr_2Fe_(1.5)Mo_(0.5)O_(6-δ) for intermediate temperature solid oxide fuel cells
【24h】

Investigation into the effect of molybdenum-site substitution on the performance of Sr_2Fe_(1.5)Mo_(0.5)O_(6-δ) for intermediate temperature solid oxide fuel cells

机译：钼位替代对中温固体氧化物燃料电池Sr_2Fe_（1.5）Mo_（0.5）O_（6-δ）性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, niobium doping is evaluated as a means of enhancing the electrochemical performance of a Sr_2Fe_(1.5)Mo_(0.5)O_(6-δ) (SFM) perovskite structure cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs) applications. As the radius of Nb approximates that of Mo and exhibits +4/+5 mixed valences, its substitution is expected to improve material performance. A series of Sr_2Fe_(1.5)Mo_(0.5-x)Nb_xO_(6-δ) (x = 0.05, 0.10, 0.15, 0.20) cathode materials are prepared and the phase structure, chemical compatibility, microstructure, electrical conductivity, polarization resistance and power generation are systematically characterized. Among the series of samples, Sr_2Fe_(1.5)Mo_(0.4)Nb_(0.10)O_(6-δ) (SFMNb_(0.10)) exhibits the highest conductivity value of 30 S cm~(-1) at 550 ℃, and the lowest area specific resistance of 0.068 Ω cm~2 at 800 ℃. Furthermore, an anode-supported single cell incorporating a SFMNb_(0.10) cathode presents a maximum power density of 1102 mW cm~(-2) at 800 ℃. Furthermore no obvious performance degradation is observed over 15 h at 750 ℃ with wet H_2 (3% H_2O) as fuel and ambient air as the oxidant. These results demonstrate that SFMNb shows great promise as a novel cathode material for IT-SOFCs.
机译：在本文中，评估了铌掺杂作为增强Sr_2Fe_（1.5）Mo_（0.5）O_（6-δ）（SFM）钙钛矿结构正极材料的电化学性能的手段，该材料用于中温固体氧化物燃料电池（IT-SOFC） ）应用程序。由于Nb的半径近似于Mo的半径，并且具有+ 4 / + 5的混合价，因此有望替代它来改善材料性能。制备了一系列Sr_2Fe_（1.5）Mo_（0.5-x）Nb_xO_（6-δ）（x = 0.05，0.10，0.15，0.20）阴极材料，并对其相结构，化学相容性，微观结构，电导率，极化电阻和系统地表征了发电。在这一系列样品中，Sr_2Fe_（1.5）Mo_（0.4）Nb_（0.10）O_（6-δ）（SFMNb_（0.10））在550℃时具有30 S cm〜（-1）的最高电导率值，并且800℃时的最小面积电阻率为0.068Ωcm〜2。此外，掺有SFMNb_（0.10）阴极的阳极支撑的单电池在800℃时的最大功率密度为1102 mW cm〜（-2）。此外，以湿H_2（3％H_2O）为燃料，周围空气为氧化剂，在750℃下经过15 h，未观察到明显的性能下降。这些结果表明，SFMNb作为IT-SOFC的新型阴极材料具有广阔的前景。

著录项

  • 来源
    《Journal of power sources》 |2014年第25期|759-765|共7页
  • 作者

    Mingyue Hou; Wang Sun; Pengfa Li; Jie Feng; Guoquan Yang; Jinshuo Qiao; Zhenhua Wang; David Rooney; Jinsheng Feng; Kening Sun;

  • 作者单位

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    School of Chemistry and Chemical Engineering, Queen's University, Belfast, Northern Ireland BT9 5AG, United Kingdom;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

    Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, People's Republic of China;

  • 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

    Solid oxide fuel cell; Cathode; Perovskite; Substitution;

    机译：固体氧化物燃料电池;阴极;钙钛矿;代换;

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