| SnO2/SiO2复合材料的合成与电化学性能 |
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| 引用本文： | 吴诗德,魏伟,李超. SnO2/SiO2复合材料的合成与电化学性能[J]. 郑州轻工业学院学报(自然科学版), 2011, 26(1): 43-46 |
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| 作者姓名： | 吴诗德 魏伟 李超 |
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| 作者单位： | 郑州轻工业学院,河南省表界面科学重点实验室,河南,郑州,450002 |
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| 基金项目： | 国家自然科学基金项目(20871107); 河南省杰出青年科学基金项目(0612002700); 河南省教育厅自然科学研究计划项目(2009A150031) |
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| 摘 要： | 采用溶胶凝胶法制备了纳米SiO2微球,并在其表面包覆了一层SnO2.用X射线衍射仪及透射电镜对其进行了晶相和形貌分析.结果显示:SnO2被成功地包覆在SiO2表面,且包覆物保持了SiO2微球原有的分散性.将样品制备成锂离子电池负极材料,充放电测试表明:该种材料具有较好的电化学循环性能.与溶胶凝胶法制备的纯SnO2相比,尽管复合材料的首次充放电容量稍低,但经过20次循环后,复合材料的充放电容量分别高出105.6%和80.7%,说明用该方法制备的复合材料具有较好的应用前景.
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| 关 键 词： | 溶胶凝胶法 SnO2/SiO2 包覆 分散性 电化学循环性能 |
Synthesis and electrochemical property of SnO2/SiO2 composite |
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| WU Shi-de,WEI Wei,LI Chao. Synthesis and electrochemical property of SnO2/SiO2 composite[J]. Journal of Zhengzhou Institute of Light Industry(Natural Science), 2011, 26(1): 43-46 |
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| Authors: | WU Shi-de WEI Wei LI Chao |
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| Affiliation: | (He′nan Province Key Lab.of Surface and Interface Sci.,Zhengzhou Univ.of Light Ind.,Zhengzhou 450002,China) |
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| Abstract: | Nano-SiO2 microspheres were synthesized via sol-gel process,then SnO2 particles was coated on.The prepared composite was characterized by X ray diffraction and transmission electron microscopy,results showed that SnO2 was successfully coated on the surface of SiO2,and the composite still preserved the original good dispersion of SiO2 microsphere.The composite was then used as lithium ion battery anode material and its electrochemical property was tested,date showed that the composite had an excellent cycle ... |
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| Keywords: | sol-gel process SiO2/SnO2 coat dispersion electrochemical cycle performance |
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