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无机材料学报

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2007 , Vol. 22 >Issue 5: 885 - 888

DOI: https://doi.org/10.3724/SP.J.1077.2007.00885

研究论文

固体氧化物燃料电池梯度复合阴极材料的制备及性能研究

  • 李艳 ,
  • 吕#[72] ,
  • 王洪涛 ,
  • 王月花
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  • 1. 中国矿业大学物理系, 徐州 221008; 2. 哈尔滨工业大学凝聚态科学与技术研究中心, 哈尔滨 150001

收稿日期: 2006-10-16

  修回日期: 2006-11-30

  网络出版日期: 2007-09-20

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Preparation and Performance of Grade-layer Composite Cathode for SOFCs

  • LI Yan ,
  • LU Zhe ,
  • Wang Hong-Tao ,
  • Wang Yue-Hua
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  • 1. Department of Physics, China University of Mining and Technology, Xuzhou 221008, China; 2. Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China

Received date: 2006-10-16

  Revised date: 2006-11-30

  Online published: 2007-09-20

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摘要

用喷涂方法在Ce0.8Sm0.2O1.9(SDC)电解质上制备梯度复合阴极, 通过X射线衍射(XRD)测试, 确定了复合材料Sm0.5Sr0.5CoO3(SSC)-Ce0.8Sm0.2O1.9(SDC)的物相组成; SEM结果表明, 阴极呈现多孔的微结构, 且与电解质表面接触良好. 每层材料的热膨胀系数随着SSC含量的增加而增大, 而电阻率随着SSC含量的增加而下降. 对梯度复合阴极材料的电化学性能进行了测试, 结果表明: 梯度复合阴极材料具有比单层SSC阴极材料更好的电化学活性.

关键词： 固体氧化物燃料电池; 梯度复合; 阴极; SSC

本文引用格式

李艳 , 吕#[72] , 王洪涛 , 王月花 . 固体氧化物燃料电池梯度复合阴极材料的制备及性能研究[J]. 无机材料学报, 2007 , 22(5) : 885 -888 . DOI: 10.3724/SP.J.1077.2007.00885

Abstract

The cathode on Ce0.8Sm0.2O1.9 (SDC) electrolyte was fabricated by a spray method. The composite phases in these materials of Sm0.5Sr0.5CoO3(SSC)-Ce0.8Sm0.2O1.9(SDC) were proved by X-ray diffraction. The microstructure shows that cathode contacts well with electrolyte and there are many pores in the cathode. The results of thermal expansion and resistance measurements show that thermal expansion coefficient increases with the increasing of SSC, whereas the resistance decreases. The results of electrochemical measurement show that the grade-layer composite cathode has better performance than single-layer SSC cathode.

Key words： solid oxide fuel cell; grade-layer composite; cathode; SSC

参考文献

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