期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 14, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201900504
关键词
flame retardance; lithium-ion batteries; Li-6; 75La(3)Zr(1); 75Ta(0); 25O(12); poly(vinylidene fluoride-co-hexafluoropropylene); trilayer separators
资金
- Fundamental Research Funds for the Chinese Central Universities [ZYGX2015Z003]
- Science & Technology Support Funds of Sichuan Province [2016GZ0151]
- National Natural Science Foundation of China [51702040, 51501030]
High-performance rechargeable lithium-ion batteries (LIBs) are central for electric vehicles and portable electronics. However, battery thermal runaway and explosion accidents in practical applications have aroused considerable debates on battery safety. The safety issues are directly associated with the flammable polyolefin separators and organic liquid electrolytes. Herein, a poly(vinylidene fluoride-co-hexafluoropropylene)/Li6.75La3Zr1.75Ta0.25O12/poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP/LLZTO/PVDF-HFP) trilayer separator with remarkable flammable retardancy and thermal stability is designed. The outer PVDF-HFP layers lead to compatible interfaces with battery electrodes, and the inner LLZTO layer enhances the thermal stability with subtle deformation at 300 degrees C. LiFePO4 half batteries assembled with the trilayer separator own a discharge capacity up to 153 mAh g(-1) at 0.5 C and capacity retention up to 95% over 200 cycles. This work provides a new avenue to safe and high-performance LIBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据