电解质
聚合物
材料科学
金属
剥离(纤维)
相间
化学工程
电池(电)
限制电流
电镀(地质)
电化学
无机化学
化学
电极
物理化学
复合材料
冶金
功率(物理)
物理
量子力学
地球物理学
生物
工程类
遗传学
地质学
作者
Jialong Fu,Zhuo Li,Xiaoyan Zhou,Zhiyong Li,Xin Guo
出处
期刊:Chemsuschem
[Wiley]
日期:2023-05-24
卷期号:16 (14)
被引量:2
标识
DOI:10.1002/cssc.202300038
摘要
Unstable interface between highly reductive Li metal and a conventional liquid electrolyte leads to uncontrollable Li dendrites and Li pulverization, thus limiting the practical applications of Li metal batteries with high energy density. Herein, a fluorinated quasi-solid polymer electrolyte is synthesized to stabilize Li metal via the C-F/LiF enriched solid electrolyte interphase (SEI) derived from the fluorinated polymer skeleton. Benefiting from the homogenized ion plating/stripping process guided by lithophilic C-F and rapid Li+ transportation assisted by LiF, Li dendrites and Li pulverization are suppressed. As a result, the Li||Li symmetrical cell with the fluorinated quasi-solid polymer electrolyte remains stable over 1400 h at a current density of 0.3 mA cm-2 . LiNi0.8 Co0.1 Mn0.1 O2 ||Li battery delivers a long-term cycling performance, where the capacity retains 87.77 % of its initial state after 300 cycles at 0.5 C in the voltage range from 2.8 to 4.4 V.
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