锂离子二次电池多孔集流体的制备与应用  

Fabrication and Application of Porous Current Collector for Lithium Ion Batteries

作　　者：罗政 梁杰铬 袁斌[1] LUO Zheng, LIANG Jiege, YUAN Bin(School of Materials Science and Engineering, South China University of Technology, Guangzhou 51064)

机构地区：[1]华南理工大学材料科学与工程学院,广州510640

出　　处：《材料导报》2018年第A01期16-20,27,共6页Materials Reports

基　　金：国家自然科学基金(51571090);广东省自然科学基金重大基础培育项目(2017B030308001)

摘　　要：金属基负极材料具有超高的理论容量,是新一代锂离子二次电池理想的负极材料。但是,金属基负极材料在充放电过程中会产生严重的体积膨胀,从而导致负极材料的粉化和脱落,使其循环性能迅速恶化。采用多孔集流体能够充分利用三维连通的孔隙和高的比表面积来显著提高锂离子二次电池的循环性能和能量密度,是缓解金属基负极材料体积膨胀的有效方法之一。本文总结了近年来微米多孔、纳米多孔和双尺度多孔集流体的制备方法及其在锂离子二次电池中的应用。Metal-based anodes are the ideal anode materials for the next generation lithium ion batteries because of their ultrahigh theoretical capacity.However,metal-based anodes suffer from huge volume expansion during cycling,which would lead to the pulverization and peeling of the electrodes.Adopting porous current collector is thought to be an effective way to accommodate the volume expansion of metal anode materials because it can greatly improve the cycling performance and energy density of lithium ion batteries by making full use of the pores and the high specific surface area.In this paper,the preparation of micro-porous,nano-porous or bimodal porous current collectors and its applications in lithium ion batteries are summarized.

关 键 词：多孔集流体 金属基负极材料 锂离子二次电池 

分 类 号：TG146[一般工业技术—材料科学与工程]