摘要
简单综述了锂离子电池的基本原理和发展现状 ,对中国科学院物理研究所固体离子学课题组在纳米储锂材料方面的研究进展做了介绍 .用HRTEM等手段研究了纳米SnO、纳米Si以及纳米SnSb合金在Li入脱嵌过程中结构的变化 .着重介绍了一种具有纳米微孔的球形硬碳材料和纳米SnSb合金钉扎的复合负极材料 ,在高功率密度和高能量密度锂离子电池方面具有广阔应用前景 .
The principle and modern aspects of lithium ion batteries are briefly introduced. Then we summarize the research on nano-scaled materials for lithium storage in the Laboratory for Solid State Ionics, where the structural evolution of nano-SnO, nano-Si particles and nano-SnSb alloy during lithium insertion/extraction has been studied by high resolution transmission electron microscope. In addition, the electrochemical properties of hard carbon spherules (HCS) and nano-SnSb alloy pinned HCS composites are described. The large lithium storage capacity and cyclic capability of these materials make them promising candidates for the anode of lithium ion batteries.
出处
《物理》
CAS
北大核心
2002年第7期444-449,共6页
Physics
基金
国家"八六三"高技术计划 (批准号 :2 0 0 1AA32 0 30 1)资助项目
