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