甘氨酸-硝酸盐法制备Ce_(0.8)Gd_(0.2)O_(1.85)阳极材料的研究Preparation Research of Ce_(0.8)Gd_(0.2)O_(1.85) Anode Materials by Glicine Nitrate Method
陈秀华;刘荣辉;马文会;王华;
摘要(Abstract)：
采用甘氨酸-硝酸盐法制备了Ce0.8Gd0.2O1.85(GDC82)阳极材料。用TGA-DSC对前驱体物料烧结过程进行分析。用XRD,SEM,直流四探针法,TPR等技术对材料的性能进行表征。前驱体物料经燃烧后,900℃下烧结4 h后,得到单一萤石结构的材料。在50850℃范围内,GDC82材料在空气气氛下的电导率整体较小,且随温度的升高变化不大,在850℃为0.05 S.cm-1。GDC82在H2气氛下的总电导率整体增加,且随温度的升高而迅速增加,850℃达到0.4 S.cm-1。GDC82与电解质材料La1-xSrxGa1-yMgyO3-δ(LSGM)混合物在1200℃下烧结15 h后,有少量MgCe杂相生成。GDC82与La1-xSrxCr1-yMnyO3-δ(LSCM)阳极材料化学相容性较好。GDC82对氢气和甲烷具有较好的催化氧化效果。
关键词(KeyWords)： Ce0.8Gd0.2O1.85;甘氨酸-硝酸盐;导电性能;催化性能
基金项目(Foundation): 国家自然科学基金(50204007)项目;; 云南省中青年学术技术带头人后备人才(2005PY01-33)项目
作者(Authors): 陈秀华;刘荣辉;马文会;王华;
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