| Preparation and properties of Ce0.8Ca0.2O1.8 anode material by glycine-nitrate process |
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| 作者姓名： | 刘荣辉 马文会 王华 杨斌 戴永年 |
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| 作者单位： | [1]Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China [2]National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China |
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| 基金项目： | 国家自然科学基金;云南省自然科学基金 |
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| 摘 要： | Ce0.8Ca0.2O1.8（CDC82） anode material was prepared by glycine-nitrate process（GNP）. Thermogravimetric（TG） analysis and differential scanning calorimetric（DSC） methods were adopted to characterize the reaction process of CDC82 material. X-ray diffractometry（XRD）, scanning electron microcopy（SEM）, direct current four probe （four-probe DC） and temperature process reduce（TPR） techniques were adopted to characterize the properties of CDC82 material. After the precursor was sintered at 750℃ for 4 h, CDC82 material with pure-fluorite structure and nanometer size was obtained. The total conductivity of CDC82 changes little with temperature in air at 50-850℃, and the maximum value is 0.04 S/cm at 750 ℃. The total conductivity wholly becomes larger when the atmosphere changes from air to hydrogen, which greatly increases with increasing temperature and reaches the maximum value of 1.09 S/cm at 850 ℃. Some impurities such as CeMg and La203 exist after the mixture of CDC82 anode and La1-xSrxGa1-yMgyO3-δ （LSGM） electrolyte material is sintered at 1 200 ℃ for 15 h. The CDC82 material as anode material has excellent catalytic property for hydrogen and methane.
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| 关 键 词： | 阳极材料 甘氨酸-硝酸盐处理 传导率 化学相容性 催化性能 |
| 收稿时间： | 8 October 2006 |
| 修稿时间： | 2006-10-082007-05-28 |
Preparation and prop erties of Ce0.8Ca0.2O1.8 anode material by glycine-nitrate process |
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| LIU Rong-hui,MA Wen-hui,WANG Hua,YANG Bin,DAI Yong-nian.Preparation and properties of Ce0.8Ca0.2O1.8 anode material by glycine-nitrate process[J].Transactions of Nonferrous Metals Society of China,2007,17(4):874-879. |
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| Authors: | LIU Rong-hui MA Wen-hui WANG Hua YANG Bin DAI Yong-nian |
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| Affiliation: | 1. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China; 2. National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | Ce0.8Ca0.2O1.8 (CDC82) anode material was prepared by glycine-nitrate process(GNP). Thermogravimetric(TG) analysis and differential scanning calorimetric(DSC) methods were adopted to characterize the reaction process of CDC82 material. X-ray diffractometry(XRD), scanning electron microcopy(SEM), direct current four probe (four-probe DC) and temperature process reduce(TPR) techniques were adopted to characterize the properties of CDC82 material. After the precursor was sintered at 750 °C for 4 h, CDC82 material with pure-fluorite structure and nanometer size was obtained. The total conductivity of CDC82 changes little with temperature in air at 50–850 °C, and the maximum value is 0.04 S/cm at 750 °C. The total conductivity wholly becomes larger when the atmosphere changes from air to hydrogen, which greatly increases with increasing temperature and reaches the maximum value of 1.09 S/cm at 850 °C. Some impurities such as CeMg and La2O3 exist after the mixture of CDC82 anode and La1-xSrxGa1-yMgyO3-δ (LSGM) electrolyte material is sintered at 1 200 °C for 15 h. The CDC82 material as anode material has excellent catalytic property for hydrogen and methane. |
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| Keywords: | Ce0 8Ca0 2O1 8 anode material glycine-nitrate process conductivity chemical compatibility catalytic property |
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