Experimental and theoretical investigations on 4,5-dimethyl-[1,3]dioxol-2- one as solid electrolyte interface forming additive for lithium-ion batteries

Authors

Mengqing Xu, South China Normal University
Liu Zhou, University of Rhode Island
Lidan Xing, South China Normal University
Weishan Li, South China Normal University
Brett L. Lucht, University of Rhode Island

Document Type

Article

Date of Original Version

9-1-2010

Abstract

4,5-Dimethyl-[1,3]dioxol-2-one (DMDO) was used as a novel electrolyte additive for lithium-ion batteries. The effect of DMDO on the formation of the solid electrolyte interface (SEI) on anode and cathode of MCMB/LiNi 0.8Co0.2O2 cells was investigated via a combination of electrochemical methods, X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations. It is found that cells with electrolyte containing 2% DMDO have better capacity retention than cells without DMDO and this improved performance is ascribed to the assistance of DMDO in forming better SEIs on anode and cathode. DMDO-decomposition products are identified experimentally on the surface of the anode and cathode and supported by theoretical calculations. © 2010 Elsevier Ltd. All rights reserved.

Publication Title, e.g., Journal

Electrochimica Acta

Volume

55

Issue

22

Citation/Publisher Attribution

Xu, Mengqing, Liu Zhou, Lidan Xing, Weishan Li, and Brett L. Lucht. "Experimental and theoretical investigations on 4,5-dimethyl-[1,3]dioxol-2- one as solid electrolyte interface forming additive for lithium-ion batteries." Electrochimica Acta 55, 22 (2010): 6743-6748. doi: 10.1016/j.electacta.2010.05.096.