Lu Zhang, Jinhua Huang, Kyrrilos Youssef
2014
Citations
0
Influential Citations
10
Citations
Journal
Journal of The Electrochemical Society
Abstract
A novel electrolyte additive, 3-oxabicyclo[3.1.0]hexane-2,4-dione (OHD), has been discovered and evaluated in Li1.1(Mn1/3 Ni1/3Co1/3)0.9O2/graphite cells under elevated temperature. When an appropriate amount of OHD is used, the cell capacity retention is improved from 60% (Gen 2 electrolyte alone) to 82% (Gen 2 electrolyte plus OHD) after 200 cycles with no obvious impedance increase. The amount of OHD added is the key to achieving the superior cell performance. The effect of OHD additive was investigated by means of electrochemical analysis, fourier transform infrared spectroscopy, scanning electron microscopy, and density functional theory computation.