QQ客服 官方微博 反馈留言

	一种新型凝胶态聚合物电解质的制备和性能; Preparation and Performances of a Novel Gel Polymer Electrolyte
	唐定国 ; 刘建红 ; 慈云祥 ; 其鲁
	2005
关键词	凝胶态聚合物电解质 新戊二醇二丙烯酸酯 互穿聚合物网络 热聚合 聚合物锂离子二次电池 gel polymer electrolyte noepentyl glycol diacrylate interpenetrating polymer network thermal polymerization polymer lithium-ion batteries
英文摘要	采用一种新型胶联剂新戊二醇二丙烯酸酯(noepentyl glycol diacrylate,NPGDA)和聚偏氟乙烯-六氟丙烯(poly(vinylidenefluoride-co-hexafluoropropylene),PVDF-HFP),液态电解液组成电解质混合溶液,然后加入引发剂并加热引发聚合反应制备了一种具有互穿聚合物网络结构的凝胶态聚合物电解质,可以用于制备聚合物锂离子二次电池.考察了不同PVDF-HFP/NPGDA质量比对凝胶态聚合物电解质性能的影响.结果表明,PVDF-HFP/NPGDA质量比可以影响凝胶态聚合物电解质的结构形貌、电化学特性以及聚合物锂离子二次电池的性能.研究发现,当m(PVDF-HFP)/m(NPGDA)=1:1时制备的凝胶态聚合物电解质具有较高的离子电导率和电化学稳定窗口,室温下分别为6.99×10-3S·cm-1和4.8V(vs Li+/Li),以其为电解质制备的聚合物锂离子二次电池具有较好的电化学性能.; A novel gel polymer electrolyte (GPE) based on noepentyl glycol diacrylate (NPGDA) and poly(vinylidene fluofide-co-hexafluoropropylenen) (PVDF-HFP) was prepared by a thermal polymerization method. GPE with a stable interpenetrating polymer network (IPN) structure was used to assemble polymer lithium-ion batteries. The influence of PVDF-HFP/NPGDA mass ratios on the characteristics of GPE was studied by scanning electron microscopy, linear sweep voltammetry and electrochemical impedance spectroscopy. The results show that PVDF-HFP/NPGDA mass ratio greatly affects the performances of GPE, such as surface morphology and ionic conductivity. When the mass ratio between PVDF-HFP and NPGDA is 1:1, GPE boasts a high ionic conductivity of 6.99 x 10(-3) S.cm(-1) and an electrochemical stability window of 4.8 V(vs Li+/Li) at 25 degrees C. The polymer lithium-ion batteries based on GPE also present excellent performances, such as high rate capability and discharge voltage plateau, good temperature reliability, and excellent cycling.; 北京市科委科研项目; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000233313800014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 5; 11; 1263-1268; 21
语种	中文
出处	万方 ; SCI ; http://d.g.wanfangdata.com.cn/Periodical_wlhxxb200511014.aspx
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/80572]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	唐定国,刘建红,慈云祥,等. 一种新型凝胶态聚合物电解质的制备和性能, Preparation and Performances of a Novel Gel Polymer Electrolyte. 2005-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。