聚丙烯腈
材料科学
电解质
锂(药物)
聚合物
热稳定性
聚合
化学工程
锂电池
电池(电)
复合材料
电极
有机化学
离子
离子电导率
离子键合
物理化学
功率(物理)
化学
内分泌学
工程类
物理
医学
量子力学
作者
Yuhan Lin,Jiahong Chen,Junli Zhu,Jiawei Zhong,Kaiming Yang,Honghao Deng,Junqiao Huang,Zhichuan Shen,Zhicong Shi
标识
DOI:10.1016/j.surfin.2023.102737
摘要
Replacing the liquid electrolytes with polymer electrolytes is an irresistible trend to meet the application requirement of lithium metal batteries. However, for obtaining a better cycling performance, traditional polymer electrolytes typically need to be operated at high temperature, which limits the commercialization of next-generation lithium metal batteries. Here, a flexible gel polymer electrolyte (TGD-TCGG-PAN) is constructed in polyacrylonitrile (PAN) porous spinning membrane via the in-situ free radical polymerization. At 30 °C, the lithium-ion conductivity and lithium-ion transference number of TGD-TCGG-PAN are 1.57 × 10−4 S cm−1 and 0.72, respectively. The LFP|TGD-TCGG-PAN|Li battery can cycle at 3C for more than 700 cycles with a capacity retention rate of 95.02%. Compared with commercial PE membrane, application of PAN makes the TGD-TCGG-PAN perform a better thermal stability. This new process is a viable way for lithium metal batteries using gel polymer electrolyte.
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