Structurally integrated asymmetric polymer electrolyte with stable Janus interface properties for high-voltage lithium metal batteries

被引：16

作者：

Chen, Silin ^{[1
]}

Ma, Shunchao ^{[2
]}

Liu, Zhenhua ^{[1
]}

Li, Yanan ^{[1
]}

Yin, Hongxing ^{[1
]}

Song, Huiyu ^{[1
]}

Zhang, Min ^{[1
]}

Xin, Mingyang ^{[1
]}

Sun, Liqun ^{[1
]}

Liu, Yulong ^{[1
]}

Xie, Haiming ^{[1
]}

Cong, Lina ^{[1
]}

机构：

[1] Northeast Normal Univ, Dept Chem, Natl & Local United Engn Lab Power Battery, Changchun 130024, Peoples R China

[2] Chinese Acad Sci, State Key Lab Electroanalyt Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2023年 / 638卷

基金：

中国国家自然科学基金;

关键词：

Polymer electrolytes; Interfaces; SEI; CEI layers; High-voltage; Lithium metal batteries; COMPOSITE ELECTROLYTE; SOLID-ELECTROLYTE; ION BATTERIES; STABILITY;

D O I：

10.1016/j.jcis.2023.01.125

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：

Solid-state polymer electrolytes are outstanding candidates for next-generation lithium metal batteries in the realm of high specific energy densities, high safeties and tight contact with electrodes. However, their applications are still hindered by the limitations that no single polymer is electrochemically stable with the oxidizing high-voltage cathode and the highly reductive Li anode, simultaneously. Herein, a bilayer asymmetric polymer electrolyte (SL-SPE) without accessional interface resistance that using poly (ethylene glycol) diacrylate (PEGDA) as a "bridge" to connect the sulfonyl (O@S = O)-contained oxidation -tolerated layer and polyether-derived reduction-tolerated layer (SPE), is proposed and synthesized by sequential two-step UV polymerizations. SL-SPE can provide widened electrochemical stability window up to 5 V, while simultaneously deploying a stable Janus interface property. Eventually, the superior high-voltage (4.4 V) cycling durability can be displayed in LiNi0.6Co0.2Mn0.2O2|SL-SPE|Li batteries. This finding provides a bran-new idea for designing multifunctional polymer electrolytes in the application of solid-state batteries.(c) 2023 Elsevier Inc. All rights reserved.

引用

页码：595 / 605

页数：11

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