| 高性能锂离子电池SiO/C复合负极材料研究 |
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| 引用本文： | 余德馨,杨学林,石长川,张鹏昌.高性能锂离子电池SiO/C复合负极材料研究[J].三峡大学学报(自然科学版),2011,33(5):80-83. |
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| 作者姓名： | 余德馨 杨学林 石长川 张鹏昌 |
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| 作者单位： | 三峡大学机械与材料学院,湖北宜昌,443002 |
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| 基金项目： | 国家自然科学基金，教育部科学技术研究重点项目，);湖北省教育厅产学研合作重大项目 |
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| 摘 要： | 以SiO为硅源,柠檬酸为碳源,通过高能球磨和高温热解制备了一种循环性能优异的锂离子电池SiO/C复合负极材料.采用X-射线衍射仪（XRD）、扫描电子显微镜（SEM）对复合材料的物相和形貌进行了表征.具有孔状结构的柠檬酸热解碳对纳米SiO不仅具有良好的包覆效果,也能有效缓冲电化学嵌脱锂过程中硅颗粒释放出来的体积变化.电化学性能测试表明,SiO/C复合负极材料电极循环100次后容量仍高达803.1mA.h/g,容量保持率为89%.
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| 关 键 词： | 一氧化硅 柠檬酸 负极 锂离子电池 |
High-performance SiO/C Composite Anode Material for Lithium Ion Battery |
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| Yu Dexin,Yang Xuelin,Shi Changchuan,Zhang Pengchang.High-performance SiO/C Composite Anode Material for Lithium Ion Battery[J].Journal of China Three Gorges University(Natural Sciences),2011,33(5):80-83. |
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| Authors: | Yu Dexin Yang Xuelin Shi Changchuan Zhang Pengchang |
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| Institution: | Yu Dexin Yang Xuelin Shi Changchuan Zhang Pengchang(College of Mechanical & Material Engineering,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | SiO/C composite anode material with high capacity,high cycling stability for lithium ion battery is synthesized by high-energy mechanical milling and subsequent heat treatment using silicon-monoxide and citric acid as raw materials.The phase composition and micro morphology of the composite material are investigated by the X-ray diffractometer(XRD) and scanning electron microscope(SEM),indicating nano-sized SiO particles was coated by pyrolytic carbon with porous feature.SiO/C composite electrode presents e... |
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| Keywords: | silicon-monoxide citric acid anode lithium ion battery |
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