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首页> 外文期刊>Journal of power sources >Low-temperature preparation by polymeric complex solution synthesis of Cu-Gd-doped ceria cermets for solid oxide fuel cells anodes: Sinterability, microstructures and electrical properties
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Low-temperature preparation by polymeric complex solution synthesis of Cu-Gd-doped ceria cermets for solid oxide fuel cells anodes: Sinterability, microstructures and electrical properties

机译：通过聚合物络合物溶液合成的Cu-Gd掺杂的二氧化铈金属陶瓷用于固体氧化物燃料电池阳极的低温制备：烧结性，微观结构和电性能

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摘要

A homogeneous dispersion of fine CuO in a gadolinia-doped ceria (CGO) ceramic matrix by the polymeric organic complex solution method has been achieved. Highly sinterable powders were prepared by this method after calcining the precursor at 600 ℃ and attrition milled. The powders consist of individual particles of few tens of nanometer in size with a low agglomeration state. The isopressed compacts were sintered in air at 1000 ℃ and reducing in N_2 90%-H_2 10% atmosphere to form Cu-CGO cermets. The microstructures showed a uniform distribution of porous metallic Cu particles surrounded by microp-orous spaces. The influence of Cu content in Cu-CGO cermets on the electrode performance has been investigated in order to create the most suitable microstructure. The electrical properties of Cu-CGO cermets have been also studied using impedance spectroscopy, in the temperature range form 150 to about 700 ℃ in argon atmosphere. These measurements determined a high value of electrical conductivity at 700 ℃, similar to that corresponded to pure metallic cupper.
机译：通过聚合有机络合物溶液方法，已实现了细氧化铜在a掺杂二氧化铈（CGO）陶瓷基质中的均匀分散。通过在600℃下煅烧前体并进行研磨磨碎后，通过这种方法可制备出高度可烧结的粉末。这些粉末由几十纳米大小的低凝聚态的单个颗粒组成。将等压成型的压块在空气中于1000℃烧结，然后在N_2 90％-H_2 10％的气氛中还原，以形成Cu-CGO金属陶瓷。微观结构显示出多孔金属铜颗粒的均匀分布，周围被微孔空间包围。为了形成最合适的微观结构，已经研究了Cu-CGO金属陶瓷中Cu含量对电极性能的影响。 Cu-CGO金属陶瓷的电学性质也已通过阻抗光谱研究，在氩气中150至约700℃的温度范围内。这些测量确定了在700℃时的高电导率值，类似于纯金属铜的电导率值。

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  • 来源
    《Journal of power sources》 |2010年第9期|2800-2805|共6页
  • 作者

    J. Tartaj; V. Gil; A. Moure;

  • 作者单位

    Instituto de Ceramica y Vidrio (CSIC), Electroceramics Department, Kelsen 5,28049 Madrid, Spain;

    rnInstituto de Ciencia de Materiales de Aragon, Universidad de Zaragoza-CSIC, Pedro Cerbuna 12, E-50009 Zaragoza, Spain;

    rnInstituto de Ceramica y Vidrio (CSIC), Electroceramics Department, Kelsen 5,28049 Madrid, Spain;

  • 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 cells; anodes; composite materials; chemical synthesis;

    机译：固体氧化物燃料电池;阳极;复合材料;化学合成;

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