| 中温固体氧化物燃料电池复合阴极材料的性能 |
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| 引用本文： | 陈秀华,张徐民,林航异,于洁,马文会. 中温固体氧化物燃料电池复合阴极材料的性能[J]. 中山大学学报(自然科学版), 2009, 48(Z2) |
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| 作者姓名： | 陈秀华 张徐民 林航异 于洁 马文会 |
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| 作者单位： | 1. 云南大学物理科学技术学院材料科学与工程系,云南,昆明,650091
2. 昆明理工大学真空冶金国家工程实验室,云南,昆明,650093 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划 |
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| 摘 要： | 利用甘氨酸法合成复合材料La0.6Sr0.4Co0.2Fe0.8O3-δ-Ce0.8Ca0.2O1.9,该材料作为中温固体氧化物燃料电池的阴极材料被研究,XRD、SEM-EDS、O2-TPD等被用于检测材料的各种性能.得到优化的合成温度是1 100 ℃,在该温度条件下晶粒的平均粒径为400 nm,而且所合成的样品的元素比与所设计的化学计量比吻合.LSCF70-CDC的电导率在700℃温度下最高.氧的解吸结果表明结构中存在着几种不同类型的氧.
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| 关 键 词： | 复合阴极 电导率 中温固体氧化物燃料电池 |
Performance of LSCF-CDC Composite Cathode Materials for IT-SOFC |
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| CHEN Xiuhua,ZHANG Xumin,LIN Hangsheng,YU Jie,MA Wenhui. Performance of LSCF-CDC Composite Cathode Materials for IT-SOFC[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2009, 48(Z2) |
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| Authors: | CHEN Xiuhua ZHANG Xumin LIN Hangsheng YU Jie MA Wenhui |
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| Abstract: | Composite materials La0.6 Sr0.4 Co0.2 Fe0.8 03-δ - Ce0.8Ca0.2O1.9 (LSCF-CDC) were prepared by glycine nitrate process (GNP) and researched as cathode for intermediate temperature SOFC (IT-SOFC), Performance of the materials are measured via dif-ferent methods coming from X-ray powder diffraction (XRD), scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDS), temperature programmed oxygen desorption curves (O2-TPD). The optimum sintering temperature is 1 100 ℃. The av-erage grain size is about 400 nm at 1100℃ and the ratio of elements is in accord with the needed stoiehiometry. The electrical conduc-tivity of LSCF70-CDC (the mole ratio of LSCF and CDC with 7: 3) is the highest at about 700 ℃. The oxygen desorption result sug-gests that there are several types of oxygen in the structure. |
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| Keywords: | LSCF-CDC LSCF-CDC composite cathode electrical conductivity IT-SOFC |
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