Enhanced wettability and thermal stability of polypropylene separators by organic-inorganic coating layer for lithium-ion batteries

被引：25
作者：
Chao, Chun-Ying [1 ]
Feng, Ye-Fei [2 ]
Hua, Kai [3 ]
Li, Hao [3 ]
Wu, Li-Jun [3 ]
Zhou, Yi-Sha [1 ]
Dong, Zhen-Wei [1 ]
机构：
[1] Xuchang Univ, Coll Adv Mat & Energy, Key Lab Micronano Mat Energy Storage & Convers He, Xuchang 461000, Henan, Peoples R China
[2] Great Southeast Co, Inst Lithium Battery Separators, Zhuji 311800, Zhejiang, Peoples R China
[3] Xuchang Univ, Coll Chem & Chem Engn, Xuchang 461000, Henan, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2018年 / 135卷 / 28期
基金：
中国国家自然科学基金;
关键词：
ceramic coating; lithium-ion battery; separator; thermal stability; wettability; POLYETHYLENE SEPARATORS; POLYMER ELECTROLYTE; POLYDOPAMINE; FLUORIDE; PARTICLES; TEMPERATURE; RESISTANCE; COPOLYMER; MEMBRANES;
D O I：
10.1002/app.46478
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Organic-inorganic coating polypropylene separators were developed by introducing SiO2 nanoparticles through sol-gel process, where polydopamine was used as an intermediate layer. Scanning electron microscopy results showed the coating layers have highly porous structure, which was beneficial for liquid electrolyte uptake. Compared with pristine polypropylene separator, the ceramic separators showed improved thermal stability, higher ionic conductivity, and lower interfacial impedance. The cells employing the ceramic separators delivers excellent discharge capacity (retention=75%) and coulombic efficiency up to 98% at 2 degrees C rate after 100 cycles. (C) 2018 Wiley Periodicals, Inc.
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页数：7
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