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锂离子电池Sn-Co-Zn合金负极材料电沉积及其储锂性能; Electrodeposition and Electrochemical Properties of Ternary Sn-Co-Zn Alloy Electrodes as Anodes for Lithium-Ion Batteries
常玉清 ; 黄令 ; 孙世刚
2010
关键词锂离子电池 负极 Sn-Co-Zn合金电极 电沉积 电化学成核与生长 Lithium-ion battery Anode Sn-Co-Zn alloy electrode Electrodeposition Electrochemical nucleation and growth
英文摘要运用电沉积技术制备出Sn-CO-zn合金电极材料.采用X射线衍射(Xrd)和扫描电子显微镜(SEM)分析了该合金材料的相结构和表面形貌.通过循环伏安和电位阶跃实验研究了Sn-CO-zn合金的电沉积机理,实验表明,Sn-CO-zn合金电沉积按扩散控制连续成核和三维生长方式进行.Xrd结果表明,该合金由COSn3、CO3Sn2和zn组成.电化学性能测试表明:Sn-CO-zn合金电极首次放电(脱锂)容量达751MAH·g-1,首次循环的库仑效率为88%;30周循环之后放电容量为510MAH·g-1.该Sn-CO-zn合金电极良好的电化学储锂性能可能归因于材料的多相结构.; A ternary Sn-Co-Zn alloy film was successfully prepared by electrodepositi on copper foil.Electrochemical deposition of the Sn-Co-Zn alloy was studied by cyclic voltammetry (CV) and chronoamperometry (CA).The structure and electrochemical performance of the electroplated Sn-Co-Zn alloy electrodes were also investigated in detail.The CV and CA results revealed that the initial deposition kinetics of the Sn-Co-Zn alloy corresponds to a model that includes a three-dimensional progressive nucleation and diffusion controlled growth.XRD results showed that the electrodeposited Sn-Co-Zn alloy consists of CoSn3,Co3Sn2,and Zn phase.Electrochemical tests indicated that at the first cycle,the discharge capacity (desertion) and columbic efficiency are measured 751 mAh·g-1 and 88%,respectively,at the 30th cycle,the Sn-Co-Zn alloy electrodes still delivered a discharge capacity of 510 mAh·g-1.The good lithium storage performance of the Sn-Co-Zn electrode is ascribed to multi-phase structure of the electrode.; 国家自然科学基金(20773102);国家基础研究重大项目计划(973)(2009CB220102)资助----
语种zh_CN
内容类型期刊论文
源URL[http://dspace.xmu.edu.cn/handle/2288/106378]  
专题化学化工-已发表论文
推荐引用方式
GB/T 7714
常玉清,黄令,孙世刚. 锂离子电池Sn-Co-Zn合金负极材料电沉积及其储锂性能, Electrodeposition and Electrochemical Properties of Ternary Sn-Co-Zn Alloy Electrodes as Anodes for Lithium-Ion Batteries[J],2010.
APA 常玉清,黄令,&孙世刚.(2010).锂离子电池Sn-Co-Zn合金负极材料电沉积及其储锂性能..
MLA 常玉清,et al."锂离子电池Sn-Co-Zn合金负极材料电沉积及其储锂性能".(2010).
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