| 花状Co5（O9．48H8．52）NO3的简易制备及其超级电容性能 |
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| 引用本文： | 郎俊伟,孔令斌,罗永春,康龙.花状Co5（O9．48H8．52）NO3的简易制备及其超级电容性能[J].兰州理工大学学报,2008,34(3). |
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| 作者姓名： | 郎俊伟 孔令斌 罗永春 康龙 |
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| 作者单位： | 兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州730050 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 采用简单沉淀方法制备出花状结构的Co5(O9.48H8.52)NO3,运用XRD、SEM、TEM、BET等方法对反应产物进行表征.结果表明,Co5(O9.48H8.52)NO3具有低结晶度的花状结构,孔径主要分布在4~40 nm,比表面积为77.22 m2/g.循环伏安、恒流充放电、交流阻抗和循环寿命测试均表明该材料具有良好的超级电容特性,单电极比容量可达368 F/g.
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| 关 键 词： | 超级电容器 Co5(O9.48H8.52)NO3 比电容 |
Facile approach to preparation of flower-like Co5(O9.48H8.52)NO3 and its super-capacitive performance |
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| LANG Jun-wei,KONG Ling-bin,LUO Yong-chun,KANG Long.Facile approach to preparation of flower-like Co5(O9.48H8.52)NO3 and its super-capacitive performance[J].Journal of Lanzhou University of Technology,2008,34(3). |
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| Authors: | LANG Jun-wei KONG Ling-bin LUO Yong-chun KANG Long |
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| Abstract: | The flower-like Co5(O9.48H8.52)NO3 was successfully synthesized with a facile chemical precipitation method. The as-prepared materials were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and BET specific surface area measurement,respectively.Structure characterizations indicated that the Co5(O9.48H8.52)NO3 possessed a flower-like structure with low crystallinity,it's pore diameter being 4~40 nm and specific surface area being 77.22 m2/g. It was shown by the test on its characteristics of cyclic voltammetry,chronopotentionmetry technology,AC impedance spectroscopy,and cyclic life that this material had excellent super-capacitive performance with a maximum specific capacitance of 368 F/g. |
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| Keywords: | supercapacitors Co5(O9 48H8 52)NO3 specific capacitance |
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