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

Authors

Zachary L. Brown, University of Rhode Island
Sunhyung Jurng, University of Rhode Island
Brett L. Lucht, University of Rhode IslandFollow

Document Type

Article

Date of Original Version

2017

Department

Chemistry

Abstract

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.

Citation/Publisher Attribution

Brown, Z. L., Jurng, S., & Lucht, B. L. (2017). Investigation of the Lithium Solid Electrolyte Interphase in Vinylene Carbonate Electrolytes Using Cu||LiFePO₄ Cells. J. Electrochem. Soc., 164(9), A2186-A2189. doi: 10.1149/2.0021712jes

Available at: http://dx.doi.org/10.1149/2.0021712jes

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 License.