摘要
随着锂离子电池能量密度进一步提高,成本进一步降低,其应用领域越来越广泛,特别是最近几年来在电动汽车和储能领域的应用被寄予厚望。然而,锂离子电池的安全性是目前制约其应用领域扩展的主要瓶颈之一。锂离子电池的安全性归根结底取决于锂离子电池材料的热稳定性,本文综述了锂离子电池材料热稳定性的理解和提高方面的最新进展。过充、热箱、针刺、挤压和内短路是最为关键和具有代表性的安全测试项目,本文在结合本课题组研究成果的基础上讨论了影响这些安全测试项目的影响因素,并总结了改善锂离子电池安全性能的方法。
Application of lithium ion battery （LIB） has been widely extended as its energy density is improved and its cost is reduced. Especially in recent years, significant attention has been paid to application of LIB in electric vehicles and energy storage. However, safety performance of LIB is considered as one of the major barriers which impede the expansion of these application fields. Since safety performance of LIB is fundamentally determined by thermal stability of materials for lithium-ion battery, this paper reviews recent research progress in this field. Among all of the safety tests, overcharge, hot box, nail penetration, crush and internal short are usually considered to be critical ones. This paper discusses major factors influencing these safety tests based on research results obtained in the authors＇group. This paper also summarizes state-of-the-art approaches to improve safety performance of LIB in terms of battery materials, cell design and manufacturing.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2011年第2期401-409,共9页
Progress in Chemistry
基金
国家重点基础研究发展计划(973)项目(No.2007CB209700)资助
关键词
锂离子电池
热稳定性
安全性
过充
热箱
短路
lithium-ion battery
thermal stability
safety performance
overcharge
hot box
short circuit
