高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (7): 1227.

• 研究论文 • 上一篇    下一篇

甘氨酸-硝酸盐法制备中温SOFC电解质及电极材料

纪媛1, 刘江1, 贺天民1, 丛立功1, 苏文辉1,2,3   

  1. 1. 吉林大学稀土固体物理研究中心和凝聚态物理研究中心, 无机合成与制备化学国家重点实验室, 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
  • 收稿日期:2001-09-08 出版日期:2002-07-24 发布日期:2002-07-24
  • 通讯作者: 纪媛(1974年出生),女,在职博士生,从事固体氧化物燃料电池研究.E-mail:hly@mail.jlu.edu.cn E-mail:hly@mail.jlu.edu.cn
  • 基金资助:

    国家发展计划委员会、吉林省计划委员会重点攻关项目(批准号:85-715-21-02);国家科技部863项目(批准号:2001AA323090)资助

Electrolyte and Electrode Materials of Intermedium-temperature SOFC Prepared by Glycine-nitrate Process

JI Yuan1, LIU Jiang1, HE Tian-Min1, CONG Li-Gong1, SU Wen-Hui1,2,3   

  1. 1. Center for Rareearth Solid State Physics and Solid State Physics, State Key Lab of Inorganic Synthesis and Preparative Chemistry, 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, Chinese Academy of Sciences, Shenyang 110015, China
  • Received:2001-09-08 Online:2002-07-24 Published:2002-07-24

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被引次数

69

摘要： 采用一种新的燃烧合成陶瓷粉末的方法--甘氨酸-硝酸盐法合成中温SOFC所有元件的初始粉体,电池的电解质材料是(CeO2)x(SmO1.5)1-x(x=0.9,0.85,0.8),阳极材料是掺(CeO2)0.8(SmO1.5)0.2(SDC)的NiO,阴极材料是SDC与La0.6Sr0.4Fe0.8Co0.2O3的复合材料.其中以(CeO2)0.9(SmO1.5)0.1为电解质的单电池性能最好,在750℃时短路电流密度为0.5A/cm2,最大功率密度达0.104W/cm2.通过SEM结果分析,掺杂摩尔分数20%SmO1.5的电解质晶界非常明显,而掺杂10%的电解质晶界有很强的融合消失的趋势.

关键词: 甘氨酸-硝酸盐法, IT-SOFC, (CeO2)0.9(SmO1.5)0.1, 阴极, 阳极

Abstract: By using a new combustion synthesis method, the glycine nitrate process, all the nano-size materials were prepared for a single solid oxide fuel cell(SOFC), in which(CeO2) x (SmO1.5)1-x (x=0.9, 0.85, 0.8) were used as the electrolytes, La0.6Sr0.4Fe0.8Co0.2O3with 50% samaria doped ceria(SDC) was selected as the cathode material, and a SDC-NiO-Ni composite powder was used as the anode material. In this study, the performance of the SOFCwas obtained up to 750 ℃, the maximum power density of 0.104 W/cm2and a short circuit current density of 500 mA/cm2of the cell was achieved at 750 ℃ by using (CeO2)0.9(SmO1.5)0.1electrolyte. The inferior SOFCperformance of the (CeO2)0.8(SmO1.5)0.2electrolyte was due to the physical discontinuity at the clearly grain boundary and could effectively introduce barriers to ionic conduction in reducing atmosphere, while the (CeO2)0.9(SmO1.5)0.1electrolyte′s boundary tends to be merged.

Key words: Glycine nitrate process, Intermedium temperature SOFC, (CeO2)0.9(SmO1.5)0.1, Cathode, Anode

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