UV-Cured Interpenetrating Networks of Single-ion Conducting Polymer Electrolytes for Rechargeable Lithium Metal Batteries

被引：31

作者：

Guan, Tianyun ^{[1
]}

Rong, Zhuolin ^{[1
]}

Cheng, Fangyi ^{[2
]}

Zhang, Wangqing ^{[1
,3
]}

Chen, Jun ^{[2
]}

机构：

[1] Nankai Univ, Coll Chem, Inst Polymer Chem, Key Lab Funct Polymer Mat,Minist Educ, Tianjin 300071, Peoples R China

[2] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

[3] Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China

来源：

ACS APPLIED ENERGY MATERIALS | 2020年 / 3卷 / 12期

基金：

美国国家科学基金会;

关键词：

single lithium-ion; polymer electrolytes; interpenetrating polymer networks; IPN; lithium metal batteries; lithium ion transference number;

D O I：

10.1021/acsaem.0c02483

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report a facile, in situ method to prepare interpenetrating networks of single-ion conductive polymer electrolytes (IN-SCPEs) for solid-state lithium metal batteries. IN-SCPEs were synthesized by first mixing lithium 4-styrenesulfonyl-(trifluoromethylsulfonyl)imide, poly(ethylene glycol) methyl ether acrylate, poly(ethylene glycol) dimethacrylate, and ethylene carbonate to form cross-linked polymer gel networks and then exposing the composite to ultraviolet (UV) light to initiate radical polymerization. The in situ formed interpenetrating polymer networks ensures high mechanical strength and thermal stability of IN-SCPEs, reduces the activation energy of Li+ conduction, and simultaneously improves the room-temperature ionic conductivity (1.9 x 10(-4) S cm(-1)), Li-ion transfer number (0.90) and electrochemical window (5.3 V). The synthesized IN-SCPEs enable dendrite-free cycling of Li metal anode and stable cycling of LiFePO4 vertical bar IN-SCPEs vertical bar Li cell with low polarization at room temperature.

引用

页码：12532 / 12539

页数：8

共 66 条

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