Electrolyte Design for Silicon-Based Li-Ion Battery Guided by Chemical Reactivity of Solvents with a Model Silicon Anode

被引：0
|
作者：
Woods, Eliot F. [1 ]
Wu, Dezhen [1 ]
Robertson, Lily A. [1 ]
Liu, Haoyu [1 ]
Key, Baris [1 ]
Vaughey, John T. [1 ]
Zhang, Zhengcheng [1 ,2 ]
机构：
[1] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA
[2] Univ Chicago, Pritzker Sch Mol Engn, Chicago, IL 60637 USA
来源：
ACS APPLIED ENERGY MATERIALS | 2024年 / 7卷 / 19期
关键词：
Chemical Reactivity; CarbonateElectrolytes; Trimethylsilyl Lithium; Silicon AnodeInterface; New Electrolyte Design; RING-OPENING POLYMERIZATION; FLUOROETHYLENE CARBONATE; ETHYLENE CARBONATE; PERFORMANCE; INTERPHASE;
D O I：
10.1021/acsaem.4c01955
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：
The use of a model compound trimethylsilyllithium was demonstrated to study the chemical reactions of electrolyte with as a principal guide to design electrolyte for silicon-based Li-ion battery. Me3Si- anion initiates ring-opening polymerization of EC leading to the formation of poly(ethylene ether carbonate), which subsequently defragments into oligomers and dissolves in electrolyte. FEC was found to react differently, generating LiF and vinylene carbonate (VC). Further reaction of VC with Me3SiLi generated poly(hydroxymethylene), which is a nonsoluble polymer and the critical SEI component. The insights from this study have guided the new electrolyte design for the Si-based battery.
引用
收藏
页码：8294 / 8300
页数：7
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