静电纺丝技术在锂离子动力电池中的应用  

Application of Electrospinning Technique in Power Lithium-Ion Batteries

作　　者：龚雪[1] 杨金龙[1] 姜玉林[1] 木士春[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《化学进展》2014年第1期41-47,共7页Progress in Chemistry

基　　金：国家重点基础研究发展计划(973)项目(No.2012CB215504);国家自然科学基金项目(No.51372186)资助~~

摘　　要：锂离子动力电池,作为动力源,要求其具有较高的比容量、倍率性能、热稳定性及优异的循环性能。静电纺丝技术是一种新型纳米纤维制备技术,因其制备的纳米纤维膜具有比表面积大和孔隙率高等特点,近年来在锂离子电池领域得到了广泛应用,有望成为大幅改善锂离子动力电池性能的关键技术。基于锂离子动力电池的特性,当前静电纺丝技术主要用于制备高孔隙率的纳米纤维膜、高分子共混膜及无机-高分子复合膜等隔膜材料以提高隔膜的机械性能和热稳定性;此外,静电纺丝技术还被用于改善磷酸铁锂等聚阴离子型正极材料及石墨负极材料的电化学性能。本文还针对上述研究中存在的问题,提出了未来静电纺丝技术在锂离子动力电池中应用的可改进的研究方案。As a power source,the power lithium-ion battery requires high capacity density,high rate capacity, good thermal stability as w ell as excellent cyclic stability. Electrospinning technique（ EST）,as a novel solution of preparing nanofibers,has been applied in lithium-ion batteries,such as separators w ith high surface area and porosity,to greatly enhance the electrochemical performance of pow er lithium-ion batteries. EST is mainly used for the preparation of high porosity nanofiber membrane,polymer blending membrane and inorganic-polymer composite membrane in order to improve the mechanical properties and thermal stabilities of separators. In addition,the obtained nanofiber materials using EST at cathodes or anodes can enhance the electrochemical performance. At last,the existing problems and the corresponding improvements of the regarding studies are pointed out.

关 键 词：静电纺丝 锂离子动力电池 纳米纤维 隔膜 负极 正极 

分 类 号：O46[理学—电子物理学] TM912.9[理学—物理]