| 碳包覆空心Fe3O4纳米粒子作为锂离子电池负极材料的电化学性能研究 |
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| 引用本文： | 孙杰,赵东林,刘辉,景磊,迟伟东,沈曾民.碳包覆空心Fe3O4纳米粒子作为锂离子电池负极材料的电化学性能研究[J].功能材料,2012,43(15):2027-2030. |
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| 作者姓名： | 孙杰 赵东林 刘辉 景磊 迟伟东 沈曾民 |
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| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室,碳纤维及功能高分子教育部重点实验室,北京100029 |
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| 基金项目： | 国家自然科学基金资助项目，国家高技术研究发展计划(863计划)资助项目 |
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| 摘 要： | 以二茂铁为铁源,石油渣油为碳源,通过加压热解和空气氧化制备了碳包覆空心Fe3O4纳米粒子。采用X射线衍射(XRD)、透射电镜(TEM)以及高倍透射电镜(HRTEM)等测试方法对样品的形貌和结构进行表征。采用恒流充放电和交流阻抗方法测试碳包覆空心Fe3O4纳米粒子作为锂离子电池负极材料的电化学性能。在电流密度为0.2mA/cm2时,首次放电比容量高达1294.7mAh/g,30次循环之后其放电比容量为392.1mAh/g;电流密度为1mA/cm2时,首次放电比容量为216.3mAh/g,30次循环之后其放电比容量为113mAh/g。
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| 关 键 词： | 锂离子电池 碳包覆空心Fe3O4纳米粒子 负极材料 电化学性能 |
Electrochemical performance of carbon encapsulated hollow Fe3O4 nanoparticles as anode material for lithium-ion batteries |
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| SUN Jie,ZHAO Dong-lin,LIU Hui,JING Lei,CHI Wei-dong,SHEN Zeng-min.Electrochemical performance of carbon encapsulated hollow Fe3O4 nanoparticles as anode material for lithium-ion batteries[J].Journal of Functional Materials,2012,43(15):2027-2030. |
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| Authors: | SUN Jie ZHAO Dong-lin LIU Hui JING Lei CHI Wei-dong SHEN Zeng-min |
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| Affiliation: | (State Key Laboratory of Chemical Resource Engineering,Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | Carbon encapsulated hollow Fe3O4 nanoparticles have been successfully synthesized via co-carbonization and oxidation in the air.The morphologies and structural features of the sample were investigated by X-ray diffraction(XRD),transmission electron microscope(TEM) and high-resolution TEM(HRTEM).The electrochemical performance testing showed that the first reversible specific capacity of the carbon encapsulated hollow Fe3O4 nanoparticles was as high as 1294.7mAh/g at a current density of 0.2mA/cm2.After 30 cycles the reversible specific capacity was still maintained at 392.1mAh/g.Even at a high current density of 1mA/cm2,the first reversible specific capacity was 216.3mAh/g and remained at 113mAh/g after 30 cycles. |
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| Keywords: | lithium ion batteries carbon encapsulated hollow Fe304 nanoparticles anode material electrochemicalperformance |
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