Mesoporous Carbon-Tin Nanocomposites as Anode Materials for Li-ion Battery

查看全文 作　　者：Z. [1]W.Zhao;[1,2]Z.P.Guo;P. [3]Yao;[1,2]H.K.Liu 机构地区：[1]Institute for Superconducting and Electronic Materials, University of Wollongong, NSW 2522, Australia;[2]ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia;[3]Centre for Analysis and Measurement, Tianjin University, Tianjin 300072, China 出　　处：《Journal of Materials Science & Technology》索引2008年第24卷第4期,共4页 基　　金：the Australian Research Council(ARC)through ARC Centre of Excellence funding(CE0561616). 摘　　要：A new mesoporous carbon-tin(MC-Sn)nanocomposite has been successfully prepared via a two-step method. From the transmission electron microscopy(TEM)observations,the tin nanoparticles were decorated on the as-prepared mesoporous carbons.The mesoprous structure of the carbon can effectively buffer the volume changes during the Li-Sn alloying and de-alloying cycles.The as-prepared MC/Sn nanocomposite electrodes exhibited extremely good cycling stability,with the specific capacity of Sn in the composite electrode calculated to be 959.7 mAh·g^(-1),which amounts to an impressive 96.9% of the theoretical value(990 mAh·g^(-1)).The reversible capacity after 200 cycles is 96.1% of the first cycle reversible capacity,i.e.,the capacity fade rate is only 0.0195% per cycle,which is even better than that of commercial graphite-based anodes. 关 键 词：中孔碳 功能材料 技术性能 实验研究