摘要
本论文向聚偏氟乙烯-六氟丙烯中添加磷酸铁锂纳米颗粒制备得到PVDF-HFP/LFP复合隔膜材料。通过这种掺杂改性,提升了隔膜的吸液率,湿润性,热稳定性,以此提升电池的放电比容量和循环性能。电池正极使用经过碳包覆的磷酸铁锂材料,负极使用金属锂片,通过制备的不同隔膜组装电池探究磷酸铁锂纳米颗粒的添加对PVDF-HFP隔膜性能的影响,并研究了不同比例的磷酸铁锂纳米颗粒对聚合物隔膜的影响。
This paper researches polyvinylidene fluoride-hexafluoropropylene/lithium iron phosphate composite diaphragm that made of adding lithium iron phosphate to polyvinylidene fluoride-hexafluoropropylene.Adding lithium iron phosphate to polyvinylidene fluoride-hexafluoropropylene promotes fluid absorption,wettability and thermal stability of the diaphragm.The specific discharge capacity and cycle performance of the battery were improved by this method.Lithium iron phosphates coated by carbons are used as positive electrode and lithium metal plates are used as negative electrode.The effects of the addition of lithium iron phosphate particle on the performance of polyvinylidene fluoride-hexafluoropropylene/lithium iron phosphate membrane is investigated by preparing different membrane assembly cells.And the effects of different quality lithium iron phosphate particle on polymer membrane is also studied.
作者
赵虔
李胜虎
陈祥瑞
李安明
王鑫宇
罗畅
郑乔天
吴修龙
肖丹
ZHAO Qian;LI Sheng-hu;CHENG Xiang-rui;LI An-ming;WANG Xin-yu;LUO Chang;ZHENG Qiao-tian;WU Xiu-long;XIAO Dan(College of mechanical engineering,Chengdu University,Chendu 610106,China;Research Center of Nano Energy and Catalytic Materials,Chengdu University,Chendu 610106,China;College of Chemistry,Sichuan University,Chengdu 610064,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2020年第7期1260-1266,共7页
Chemical Research and Application
基金
四川省粉末冶金工程技术研究中心开放基金项目(基金号:SC-FMYJ2019-09)。
关键词
锂离子电池
聚合物隔膜
聚偏氟乙烯-六氟丙烯
磷酸铁锂
lithium-ion batteries
polymeric separator
polyvinylidene fluoride-hexafluoropropylene
lithium iron phosphate
