Single-Ion Lithium Conducting Polymers with High Ionic Conductivity Based on Borate Pendant Groups

被引：53

作者：

Guzman-Gonzalez, Gregorio ^{[1
]}

Vauthier, Soline ^{[1
,2
]}

Alvarez-Tirado, Marta ^{[1
,2
]}

Cotte, Stephane ^{[2
]}

Castro, Laurent ^{[2
]}

Gueguen, Aurelie ^{[2
]}

Casado, Nerea ^{[1
]}

Mecerreyes, David ^{[1
,3
]}

机构：

[1] POLYMAT Univ Basque Country UPV EHU, Ave Tolosa 72, Donostia San Sebastian 20018, Spain

[2] Toyota Motor Europe Res & Dev 1, Adv Mat Res Battery & Fuel Cell, B-1930 Zaventem, Belgium

[3] Ikerbasque, Basque Fdn Sci, Bilbao 48011, Spain

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 07期

关键词：

Boron-Based Polymers; Lithium Batteries; Polymer Electrolytes; Polymerizable Boron-Lithium Salts; ELECTROLYTES; COPOLYMERS;

D O I：

10.1002/anie.202114024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A family of single-ion lithium conducting polymer electrolytes based on highly delocalized borate groups is reported. The effect of the nature of the substituents on the boron atom on the ionic conductivity of the resultant methacrylic polymers was analyzed. To the best of our knowledge the lithium borate polymers endowed with flexible and electron-withdrawing substituents presents the highest ionic conductivity reported for a lithium single-ion conducting homopolymer (1.65x10(-4) S cm(-1) at 60 degrees C). This together with its high lithium transference number tLi+ =0.93 and electrochemical stability window of 4.2 V vs Li-0/Li+ show promise for application in lithium batteries. To illustrate this, a lithium borate monomer was integrated into a single-ion gel polymer electrolyte which showed good performance on lithium symmetrical cells (<0.85 V at +/- 0.2 mA cm(-2) for 175 h).

引用

页数：5

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