Characterizing Solid Electrolyte Interphase on Sn Anode in Lithium Ion Battery

Authors

Daniel M. Seo, University of Rhode Island
Cao Cuong Nguyen, University of Rhode Island
Benjamin T. Young, University of Rhode Island
David R. Heskett, University of Rhode IslandFollow
Joseph C. Woicik
Brett L. Lucht, University of Rhode IslandFollow

Document Type

Article

Date of Original Version

2015

Abstract

Tin (Sn) nanoparticle electrodes have been prepared and battery cycling performance has been investigated with 1.2 M LiPF₆ in ethylene carbonate (EC) / diethyl carbonate (DEC) electrolyte (1:1, w/w) with and without added vinylene carbonate (VC) or fluoroethylene carbonate (FEC). Incorporation of either VC or FEC improves the capacity retention of Sn nanoparticle electrodes although incorporation of VC also results in a significant increase in cell impedance. The best electrochemical performance was observed with electrolyte containing 10% of added FEC. In order to develop a better understanding of the role of the electrolyte in capacity retention and solid electrolyte interface (SEI) structure, ex-situ surface analysis has been performed on cycled electrodes with infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Hard XPS (HAXPES). The ex-situ analysis reveals a correlation between electrochemical performance, electrolyte composition, and SEI structure.

Citation/Publisher Attribution

Seo, D. M., Nguyen, C. C., Young, B. T., Heskett, D. R., Woicik, J. C., & Lucht, B. L. (2015). Characterizing Solid Electrolyte Interphase on Sn Anode in Lithium Ion Battery. J. Electrochem. Soc., 162(13), A7091-7095. doi: 10.1149/2.0121513jes

Available at: http://dx.doi.org/10.1149/2.0121513jes

Creative Commons License

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

Comment

Daniel M. Seo, Brett L. Lucht and Cao Cuong Nguyen are in the Department of Chemistry.

Benjamin T. Young and David R. Heskett are in the Department of Physics.