高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (3): 501.

• 研究论文 • 上一篇    下一篇

NiO晶粒尺寸对SOFC阳极电化学性能的影响

王金霞1,4, 纪媛1, 许大鹏1, 贺天民1, 王巍然1, 周险峰1, 苏文辉1,2,3   

  1. 1. 吉林大学稀土固体物理研究中心, 凝聚态物理系, 长春 130023;
    2. 哈尔滨工业大学凝聚态科学与技术研究中心, 哈尔滨 150001;
    3. 中国科学院国际材料物理中心, 沈阳 110015;
    4. 中国环境管理干部学院, 秦皇岛 066004
  • 收稿日期:2003-01-13 出版日期:2004-03-24 发布日期:2004-03-24
  • 通讯作者: 苏文辉(1936年出生),男,博士生导师,从事固体稀土氧化物燃料电池及其它新能源的开发应用研究.
  • 基金资助:

    国家发展计划委员会;吉林省计划委员会重点公关项目(批准号;85-715-21-02)资助

Influence of Size of NiO on the Electrochemical Properties for SOFC Anodes

WANG Jin-Xia1,4, JI Yuan1, XU Da-Peng1, HE Tian-Min1, WANG Wei-Ran1, ZHOU Xian-Feng1, SU Wen-Hui1,2,3   

  1. 1. Center for Rare Earth Solid States Physics, Deparment of Condensed Matter Physics, Jilin University, Changchun 130023, China;
    2. Center For Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;
    3. International Center for Materials Physics, Academia Sinica, Shenyang 110015, China;
    4. The Environmental Managemental Institute of China, Qinhuangdao 066004, China
  • Received:2003-01-13 Online:2004-03-24 Published:2004-03-24

PDF (PC)

被引次数

17

摘要： 用溶胶凝胶法合成了具有高比表面积的纳米粒子NiO,用固相合成法制备了NiO-YSZ复合材料.阻抗谱测试表明,含纳米尺寸NiO的复合材料的极化电阻更小,电导率更高.以质量分数为55%的NiO-YSZ为阳极材料,并将其封接成单电池.结果表明,含纳米尺寸NiO的复合阳极制成的单电池,其输出功率更高,短路电流更大.通过减小NiO晶粒尺寸,可增大阳极三相反应界面长度,并获得性能优良的阳极材料.

关键词: 溶胶凝胶法, 三相反应区, SOFC, 阳极

Abstract: Nanometric NiO with a high specific surface area was synthesized by sol-gel method. NiO-YSZ anode materials were prepared by solid state reaction and their impedance spctra were measured. The analysis results show that NiO-YSZ anode materials with nanometric oxide NiO have a smaller polarization resistance Rp, higher conductivity than those with original powder NiO. The single cell with the anode of nanometric NiO-YSZ in 55% mass fraction has a higher power density and higher current density than that of the cell with the anode of original power NiO-YSZ in the same mass fraction. These demonstrate that the optimization of the anode can be obtained by increasing the three phase boundary(TPB) line among Nickel, YSZ and Hydrogen, which can be achieved by decreasing the size of the NiO.

Key words: Sol-gel method, Three-phase boundaries, SOFC, Anode.

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