| Sn-Sb-Co复合负极材料的制备及性能 |
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| 引用本文： | 李求忠,陈峰,游东宏,陈震.Sn-Sb-Co复合负极材料的制备及性能[J].福建师范大学学报(自然科学版),2010,26(6). |
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| 作者姓名： | 李求忠 陈峰 游东宏 陈震 |
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| 作者单位： | 1. 宁德师范学院化学系,福建,宁德,352100
2. 宁德师范学院化学系,福建,宁德,352100;福建师范大学化学与材料学院,福建,福州,350108 |
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| 摘 要： | 采用化学还原共沉积法制备了Sn-Sb-Co复合材料,用SEM对其形貌进行表征.根据充放电曲线、循环伏安曲线和交流阻抗谱,探讨了材料的嵌/脱锂行为.热处理后的Sn-Sb-Co复合材料呈不均匀粒状的无定形态结构;Sn-Sb-Co复合电极首次充、放电比容量分别为618,1 325 mAh/g,第20循环的可逆比容量为390 mAh/g,库仑效率为92%.
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| 关 键 词： | 锂离子电池 Sn-Sb-Co复合材料 电化学性能 交流阻抗 |
Synthesis and Performance of Sn-Sb-Co Composite Anode Material |
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| LI Qiu-zhong,CHEN Feng,YOU Dong-hong,CHEN Zhen.Synthesis and Performance of Sn-Sb-Co Composite Anode Material[J].Journal of Fujian Teachers University(Natural Science),2010,26(6). |
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| Authors: | LI Qiu-zhong CHEN Feng YOU Dong-hong CHEN Zhen |
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| Institution: | LI Qiu-zhong1,CHEN Feng1,YOU Dong-hong1,CHEN Zhen1,2(1.Department of Chemistry,Ningde Normal University,Ningde 352100,China,2.College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350108,China) |
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| Abstract: | The Sn-Sb-Co composite material was prepared by chemical reductive co-precipitation method.The morphology was characterized by SEM.The lithium insertion-extraction was studied by the charge-discharge curves,cyclic voltammetry curves and AC(Alternating Current) impedance plots.The result showed that the Sn-Sb-Co composite material had an asymmetrical grainy and amorphous structure.The first charge-discharge specific capacities of Sn-Sb-Co composite electrode were 618 mAh/g and 1 325 mAh/g,respectively.The re... |
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| Keywords: | Li-ion battery Sn-Sb-Co composite material electrochemical performance AC impedance |
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