摘要
橄榄石型磷酸铁锂(LFP)作为锂离子电池正极材料,具有良好的电化学性能、平稳的充放电平台、稳定的充放电结构,而且无毒、无污染、安全性能好、循环寿命长、原材料来源广泛。然而由于其本身结构的缺陷,导致其倍率性能低下,这将直接影响该材料在动力汽车市场的应用。改善其倍率性能的方法主要有离子掺杂、表面包覆、合成纳米材料。以这几类改性方法为主线,综述了近年来LFP倍率性能改善的研究进展。
Olivine-type lithium iron phosphate(LFP)was used as cathode material of lithium ion battery due to its good electrochemical performance,such as stable charging and discharging platform and steady structure during cycling of Li ions.What's more,it had high safety,non-toxic and polluting-free,as well as long cycle life and rich raw material.However,there was a instinct drawback of olive structure that baffles the marketization of LEP in the field of electrical vehicle,and that was the poor rate performance.The main approaches to improve rate performance of LEP include ion doping,surface coating,nanocrystallization,ect.On the base of improved approaches mentioned above,the methods in enhancing rate performance of LFP were reviewed in recent years.
作者
王旭峰
冯志军
张华森
丛欣泉
曾佑鹏
WANG Xu-feng;FENG Zhi-jun;ZHANG Hua-sen;CONG Xin-quan;ZENG You-peng(School of Materials Science and Engineering, Nanchang HangKong University, Nanchang Jiangxi 330063, China)
出处
《电源技术》
CAS
CSCD
北大核心
2017年第8期1202-1205,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金项目(51302131)
关键词
锂离子电池
正极材料
磷酸铁锂
倍率性能
lithium ion battery
cathode material
lithium iron phosphate
rate performance