| 锂离子电池Si_(1.81)Co_(0.6)Cr_(0.6)Zn_(0.2)/MGS复合负极材料的制备与性能 |
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| 引用本文： | 李明齐.锂离子电池Si_(1.81)Co_(0.6)Cr_(0.6)Zn_(0.2)/MGS复合负极材料的制备与性能[J].吉林化工学院学报,2010,27(2):10-13. |
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| 作者姓名： | 李明齐 |
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| 作者单位： | 西华师范大学,化学化工学院,四川,南充,637002 |
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| 基金项目： | 国家科技部重大项目，四川省教育厅项目 |
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| 摘 要： | 采用两步高能球磨法制备了一种新的锂离子电池硅基复合负极材料Si1.81Co0.6Cr0.6Zn0.2/MGS.用X射线衍射(XRD)和扫描电镜(SEM)表征了材料的组成和形貌结构.电化学测试表明,Si1.81Co0.6Cr0.6Zn0.2/MGS作锂离子电池负极材料有较好的电化学性能:首次可逆容量为561 mAh.g-1,50个循环后,可逆容量的保持率为91%.Si1.81Co0.6Cr0.6Zn0.2/MGS循环性能的改善归因于电极结构在循环过程中的稳定性.
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| 关 键 词： | Si1.81Co0.6Cr0.6Zn0.2/MGS 复合材料 负极 锂离子电池 电化学性能 |
Preparation and electrochemical properties of Si1.81Co0.6Cr0.6Zn0.2/MGS/MGS as anode material for Li-ion batteries |
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| LI Ming-qi.Preparation and electrochemical properties of Si1.81Co0.6Cr0.6Zn0.2/MGS/MGS as anode material for Li-ion batteries[J].Journal of Jilin Institute of Chemical Technology,2010,27(2):10-13. |
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| Authors: | LI Ming-qi |
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| Affiliation: | LI Ming-qi(College of Chemistry and Chemical Engineering,China West Normal University,Nanchong 637002,China) |
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| Abstract: | A new Si-based composite material（Si1.81Co0.6Cr0.6Zn0.2/MGS） as anode for lithium-ion batteries was prepared by two-step high energy ball milling（HEBM） technique.X-ray diffraction（XRD） and scanning electron microscope（SEM） were used to examine the compositions and morphology of the composite material.Electrochemical measurement indicates that Si1.81Co0.6Cr0.6Zn0.2/MGS displays good electrochemical properties.The initial reversible capacity is 561 mAh·g-1 and 91% of it may be maintained after 50 cycles.The improvement of Si1.81Co0.6Cr0.6Zn0.2/MGS in cycle performance should be attributed to the structural stability of electrode. |
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| Keywords: | Si1 81Co0 6Cr0 6Zn0 2/MGS |
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