中文摘要：

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.

英文摘要：

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.