Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu∥LiFePO4 Cells

被引：37
作者：
Brown, Zachary L. [1 ]
Jurng, Sunhyung [1 ]
Lucht, Brett L. [1 ]
机构：
[1] Univ Rhode Isl, Dept Chem, Kingston, RI 02881 USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2017年 / 164卷 / 09期
关键词：
LI-ION BATTERIES; METAL ANODE; PROPYLENE CARBONATE; ELECTROCHEMICAL-BEHAVIOR; RECHARGEABLE BATTERIES; ENERGY-STORAGE; SEI; FILM; SPECTROSCOPY; DEPOSITION;
D O I：
10.1149/2.0021712jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of vinylene carbonate (VC) on the plating/stripping of lithium was investigated using Cu|| LiFePO4 cells. These cells allow for easy fabrication and in-situ generation of lithium, with no excess lithium to influence performance. Addition of VC to the electrolyte improves both capacity retention and efficiency. IR and XPS spectroscopy of the surface of the plated lithium suggests the presence of a significant amount of poly(VC) when the electrolyte (1.2 M LiPF6 in ethylene carbonate (EC): ethyl methyl carbonate (EMC) (3: 7, vol)) contains 5% of added VC. This suggests employing additives that generate polymeric species on the surface of lithium improves plating/stripping performance in carbonate electrolytes. (C) The Author(s) 2017. Published by ECS. All rights reserved.
引用
收藏
页码：A2186 / A2189
页数：4
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