NiO／Ce0.8Sm0.2O1.9阳极材料制备及单电池性能

材料科学与工程学报, 2012, 30(6): 924-927.

NiO／Ce0.8Sm0.2O1.9阳极材料制备及单电池性能

方海燕 ^1, , 程继贵 ^2, , 杨俊芳 ^3, , 李明玲 ^4,

1.安徽巢湖学院化学化工与生命科学学院,安徽巢湖238000

2.合肥工业大学材料科学与工程学院。安徽合肥230009

3.合肥工业大学材料科学与工程学院。安徽合肥230009

4.安徽巢湖学院化学化工与生命科学学院,安徽巢湖238000

基金项目: 安徽省科技攻关资助项目(2008AKKG033) 低维材料及其应用技术教育部重点实验室开放基金资助项目(DWKF0802) 安徽省自然科学基金资助项目(070414186)

关键词：中温固体氧化物燃料电池 , NiO , Ce0 , 8Sm0 , 2O2 , 9 , 阳极材料 , 柠檬酸燃烧法 , 电化学性能

Preparation and Characterization of NiO/Ce0.8Sm0.2O1.9 Anode Material and Single Cell

Keywords： [Key words] solid oxide fuel cell (IT-SOFC) , NiO/Ce0.8Sm0.2O1.9 , anode materials , citric acid-nitratecombustion method , electrochemical performance ,

本文采用柠檬酸燃烧法制备了柠檬酸与金属离子摩尔比（MRCM）为1．5的NiO／Ce0.8Sm0.2O1.9（NiO／SDC）粉体，对其相组成和形貌等进行了表征。以NiO／SDC为阳极原料，共压法制备了SOFC单电池，对其电化学性能性能进行测试。结果表明，用柠檬酸燃烧法成功制备出NiO／Ce0.8Sm0.2O1.9（NiO／SDC）粉体，NiO／SDC粉体中NiO与SDC晶体的粒度分别为10．39nm和7．01nm，粉体的分散性好，比表面积大。所制备的单电池在800℃测试温度下开路电压为0．721V，最大输出功率密度可达224．2mW／cm2。本试验的初步实验结果表明，以柠檬酸燃烧法制备的NiO／Ce0.8Sm0.2O1.9（NiO／SDC）粉体为原料制备的阳极材料所构建的SOFC单电池表现出较好的电池性能，为阳极材料的研究开拓了新的发展方向。．

NiO/Ce0.8Sm0.2O1.9 (NiO/SDC) composite powder was prepared by a citric acid-nitrate combustion method in which the molar ratio of citric acid to metal ion (MRCM) was set 1.5. The phase composition and particle size of the powder were determined by X-ray diffraction and transmission electron microscope. Solid oxide fuel monocell with the NiO/SDC as anode was fixed up and tested on a home-made fuel cell testing device to investigate its electrochemical performance. The powder was well dispered and with high specific area. The respectively. The average particle sizes of NiO and SDC in the powder single cell can achieve the highest power density of were found 10.39nm and 7.01nm, 224.2mW/cm2 and an open circuit voltages of 0. 721V at 800℃. These results suggest that the SOFC monocell made with NiO/Ce0.8Sm0.2O1.9 (NiO/SDC) powder as the anode has a good cell performance, and the whole process may be a new direction for the study of anode materials.

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