Chemical Prelithiation of Negative Electrodes in Ambient Air for Advanced Lithium-Ion Batteries

被引：138

作者：

Wang, Gongwei ^{[1
,3
]}

Li, Feifei ^{[1
]}

Liu, Dan ^{[2
]}

Zheng, Dong ^{[1
]}

Luo, Yang ^{[1
]}

Qu, Deyu ^{[2
]}

Ding, Tianyao ^{[1
]}

Qu, Deyang ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA

[2] Wuhan Univ Technol, Dept Chem Chem Engn & Life Sci, 122 Luoshi Rd, Wuhan 430070, Hubei, Peoples R China

[3] Wuhan Univ, Dept Chem, Wuhan 430072, Hubei, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 09期

关键词：

lithium-ion batteries; negative electrode; prelithiation; ambient air; biphenyl; HIGH-CAPACITY; HIGH-ENERGY; ANODE; NANOPARTICLES; CELLS;

D O I：

10.1021/acsami.8b19416

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study reports an ambient-air-tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp)/tetrahydrofuran (THF) solution as the prelithiation reagent. Key to this strategy are the relatively stable nature of 1 M Li-Bp/THF in ambient air and the unique electrochemical behavior of Bp in ether and carbonate solvents. With its low redox potential of 0.41 V vs Li/Li+, Li-Bp can prelithiate various active materials with high efficacy. The successful prelithiation of a phosphrous/carbon composite electrode and the notable improvement in its initial Coulombic efficiency (CE) demonstrates the practicality of this strategy.

引用

页码：8699 / 8703

页数：5

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