锂离子电池锡合金负极薄膜材料制备及性能  

Preparation and performance of tin alloy film anode materials for lithium-ion battery

作　　者：王连邦[1] 褚君尉[1] 张品杰[1] 姚金翰[1] 马淳安[1] 

机构地区：[1]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《浙江工业大学学报》2012年第5期473-476,共4页Journal of Zhejiang University of Technology

基　　金：国家973计划项目前期研究专项(2007CB216409);国家自然科学基金资助项目(20506024)

摘　　要：采用化学沉积的方法在铜箔上制备锡薄膜,通过改变沉积条件,制得三种不同厚度和结构的锡合金负极材料.运用XRD、SEM、充放电和循环伏安等多种方法对电极结构和性能进行表征和研究.研究表明:沉积时间为10min的锡薄膜负极材料具有四方晶系结构,其表面由尺寸在4μm左右的合金颗粒构成,颗粒有大小均匀的孔洞结构,增加了电极的比表面积.该锡薄膜电极具有较高的容量,在0.01～1.00V电压区间内,电极的首次放电容量为885.7mAh/g,循环100周后放电容量仍保持在460mAh/g以上.Tin thin-film electrodes were prepared lithium-ion battery. There were three samples depend on different deposited conditions. Their studied by X-ray diffration, scanning electron by electroless plating on copper foil as anode of with different thickness and structure obtained structure and properties were characterized and microscopy, charging/discharging test, cyclic voltammetry. The tin-thin film deposited for 10 minutes exhibited a structure of tetragonal crystal. The tin-thin film was composed of tin particles with the size of around 4 μm,and the tin particle was full of similar holes, which enhanced the specific furface area of electrode. The tinthin film electrode showed high charge-discharge capacity. At potential of 0.01-1.00 V, The first discharge capacity of the tin-thin film electrode was 885. 7 mAh/g, its discharge capacity remained over 460 mAh/g after 100 cycles.

关 键 词：锂离子电池 化学镀 负极材料 锡薄膜 

分 类 号：TM911.18[电气工程—电力电子与电力传动]