(1. 廣西師范大學(xué) 化學(xué)化工學(xué)院，桂林 541004；
2. 右江民族醫(yī)學(xué)院 化學(xué)教研室，百色 533000)
摘 要: 以三維多孔泡沫銅為基底，采用化學(xué)鍍的方法制備鋰離子電池薄膜Sn負(fù)極材料。利用掃描電鏡、X射線衍射分析以及恒電流充放電測(cè)試等手段研究不同厚度薄膜Sn電極的形態(tài)、結(jié)構(gòu)和電化學(xué)行為。結(jié)果表明：化學(xué)鍍工藝制備的Sn電極表面的大量微孔和島狀突起不僅增大電極的表面積，而且顯著緩解電極在充放電過程中體積的變化；其中鍍層較薄的樣品C薄膜Sn電極的初始充電(脫鋰)容量為660.6 mA∙h/g，經(jīng)100次循環(huán)后，容量保持在299.5 mA∙h/g，具有較好的循環(huán)性能。
關(guān)鍵字: 錫薄膜；負(fù)極；泡沫銅；鋰離子電池
foam copper as anode material
（1. School of Chemical and Chemistry Engineering, Guangxi Normal University, Guilin 541004, China;
2. Department of Chemistry, Youjiang Medical College for Nationalities, Baise 533000, China）
Abstract:Three-dimensional porous Sn thin film electrodes were prepared by electroless deposition on foam copper. The microstructures and electrochemical performance of the electrodes were discussed by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and charge/discharge measurement. The results demonstrate that the porous framework and micro-holes have a great structure advantage in restricting severe volume changes of Sn thin film electrodes. The initial capacity of the thinner film electrode of sample C is 660.6 mA∙h/g. After 100 cycles, the capacity of sample C retains 299.5 mA∙h/g, showing good cycle performance.
Key words: Sn thin film; negative electrode; foam copper; lithium ion battery
