氧化铁-氧化锡-碳复合纳米带的合成及其在锂电池中的应用  

Synthesis of iron oxide-ton oxide-carbon composite nanobelts and their applications in lithium-ion batteries

作　　者：陆君[1] 彭卿[1] 李亚栋[1] 

机构地区：[1]清华大学化学系,北京100084

出　　处：《科学通报》2013年第31期3213-3219,共7页Chinese Science Bulletin

基　　金：国家自然科学基金重点项目(21231005)资助

摘　　要：铁基和锡基材料是两类颇有潜力的锂离子电池负极材料,其复合纳米结构是近年来锂电池负极材料研究的热点之一.本工作以-FeOOH纳米带为前驱体,通过简单的Na2SnO3水解反应以及葡萄糖热分解反应实现氧化铁-氧化锡-碳(Fe-Sn-C)复合纳米带材料的构筑.与参照样的性能对比发现,Fe-Sn-C复合纳米带不但具有Fe基和Sn基材料的脱嵌锂的电化学活性,而且具有较小的电荷转移电阻,因而显示出优异的倍率特性以及较好的容量保持能力.Fe- and Sn-based oxides have been regarded as promising candidates as anode for lithium-ion batteries. Recently, nanostructures composed of Fe- and Sn-based oxides composites have attracted much attention and intensively investigated. Composite nanobelts with carbon, Fe- and Sn-based oxides have been obtained with α-FeOOH nanobelts as the precursor, and applying Na2SnO3 hydralysis and gluocuse thermal decomposition reactions. Comparing with counterparts, the composite nanobelts with carbon, Fe- and Sn-based oxides delivered excellent rate capability and outstanding cycling stability, due to electrochemical reactivity of Fe- and Sn-based oxides and reduced charge transfer resistance.

关 键 词：锂离子电池 负极 氧化铁 氧化锡 纳米带 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]