Fluorinated Nonflammable In Situ Gel Polymer Electrolyte for High-Voltage Lithium Metal Batteries

被引：20
作者：
Wang, Fuhe [1 ,2 ]
Zhong, Jun [3 ]
Guo, Yaqing [1 ]
Han, Qigao [2 ]
Liu, Honghao [2 ]
Du, Jinqiao [3 ]
Tian, Jie [3 ]
Tang, Shun [2 ]
Cao, Yuancheng [2 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
[3] Shenzhen Power Supply Co Ltd, Shenzhen 518001, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2023年 / 15卷 / 33期
关键词：
in situ polymerization; gel polymer electrolytes; lithium metal batteries; high voltage; fluorinated; ION; SAFE; CHALLENGES; ANODE;
D O I：
10.1021/acsami.3c05840
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Rechargeablelithium metal batteries (LMBs) offer excellent opportunitiesfor applications requiring high-energy-density battery systems. Sofar, it has received a lot of interest in pairing higher-energy-densityhigh-voltage nickel-rich cathodes. Here, fluorinated solvents wereused instead of the usual carbonate solvents to prepare gel polymerelectrolytes (FGPE) by in situ polymerization of polymers introducingthe fluorine-containing groups. Theoretically and experimentally,FGPE has proven to be ultra-compatible with the lithium metal anodeand LiNi0.8Co0.1Mn0.1O2 cathode. A stable plating/stripping process of over 2000 h can beachieved for symmetrical lithium cells using FGPE. The Li||FGPE||NCM811cell has a longer cycle life at a high voltage (4.5 V). In addition,the zero self-extinguishing time indicates that the FGPE has sufficientsafety. In summary, the design of this electrolyte provides ideasto improve the safety and energy density of LMBs.
引用
收藏
页码：39265 / 39275
页数：11
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