电沉积锡锑合金负极的制备及电化学性能  

Fabrication and electrochemical performance of Sn-Sb alloy anode prepared by electrodeposition

作　　者：姜前蕾[1] 贾梦秋[1] 薛锐生[1] 石祥锐[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《电源技术》2013年第2期200-203,共4页Chinese Journal of Power Sources

摘　　要：为了改善锂离子电池用Sn-Sb合金负极的循环稳定性并提高其首次库仑效率,采用电化学共沉积法在Cu集流体上制备了锂离子电池用Sn-Sb合金薄膜负极材料。通过能量散射光谱(EDS)、X射线衍射光谱法(XRD)、扫描电子显微镜法(SEM)及恒电流充放电实验,研究了电流密度和电沉积时间对Sn-Sb合金相组分、结构、颗粒形貌和电化学性能的影响。电化学测试表明:在电流密度为5 mA/cm2,沉积时间为30 min时,得到的产物中金属间化合物(Sn-Sb相)的含量最高,所制备电极的电化学性能较好。In order to improve the cycle stability and enhance its initial Coulomb efficiency of Sn-Sb alloy for lithium ion battery anodes, Sn-Sb alloy thin film was prepared by electrodeposition onto copper foil collector. The effects of the electrodeposition current and time conditions on the phase composition, structure, particle morphology and electrochemical performance of SnSb alloy were characterized by EDS, XRD, SEM and constant current charge-discharge experiments. The content of intermetallic （SnSb phase） is the highest in the product prepared with a current density of 5 mA/cm2 for 30 min, and the electrochemical measurements show that the prepared electrode exhibits a preferable electrochemical property.

关 键 词：电化学沉积 SN-SB合金 锂离子电池 负极 

分 类 号：TM912.9[电气工程—电力电子与电力传动]