| 锂离子电池硅/石墨/蔗糖碳复合负极材料的制备和电化学性能 |
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| 引用本文： | 李明齐.锂离子电池硅/石墨/蔗糖碳复合负极材料的制备和电化学性能[J].西华师范大学学报(哲学社会科学版),2010(1). |
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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; |
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| 基金项目： | 国家科技部重大项目(2006CB932703);;中科院创新工程项目(KJCX-YW-M01) |
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| 摘 要： | 以纳米硅(Si)、天然石墨(NG)和蔗糖为前驱体通过球磨和裂解制备了具有壳核结构的碳硅复合材料(Si/NG/DC).用X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)表征了复合材料的组成和形貌结构.恒电流充放电测试表明,Si/NG/DC复合材料表现出较好的电化学性能,它的最高可逆容量达730mA.h.g-1,在测试的45个循环中,从第二个循环开始,容量没有出现明显衰退.交流阻抗(EIS)测试表明,Si/NG/DC导电性的提高和电极结构在循环过程中的稳定性是其电化学性能改善的原因.
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| 关 键 词： | Si/NG/DC 阳极 锂离子电池 电化学性能 |
Preparation of Si/Graphite/Sucrose-Carbon Composite Material and its Electrochemical Property as Anode for Lithium-ion Battery |
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| LI Ming-qi.Preparation of Si/Graphite/Sucrose-Carbon Composite Material and its Electrochemical Property as Anode for Lithium-ion Battery[J].Journal of China West Normal University:Natural Science Edition,2010(1). |
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| Authors: | LI Ming-qi |
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| Affiliation: | College of Chemistry and Chemical Engineering;China West Normal University;Nanchong 637009;China |
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| Abstract: | Core-shell Si/NG/DC composite material comprising silicon(Si),natural graphite(NG)and sucrose-based disordered carbon(DC),was synthesized by high energy ball milling and pyrolysis,using silicon,graphite and sucrose as precursors.X-ray diffraction(XRD),scanning electron microscope(SEM)and transmission electron microscope(TEM)were used to characterize the compositions and morphology of the composite.Galvanostatic charge-discharge technique measurement shows that Si/NG/DC composite exhibits excellent electroch... |
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| Keywords: | Si/NG/DC anode Lithium-ion battery electrochemical property |
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