The stabilization of electrolytes for rechargeable lithium batteriesRecent experimental studies of Li secondary cells are reviewed, focusing on (1) the novel anion lithium trifluoromethanesulfonyl imide (LTI) and (2) the use of KO2 and KOH additives to stabilize the electrolyte. Sample data are presented in tables and graphs and briefly characterized. The charging limits of LTI were found to compare favorably with those of LiAsFe6/THF and 2-MeTHF. Significant improvements were also obtained with the additives, but the results were erratic, with 2-3-fold variations among identical preparations. These differences are tentatively attributed to Li-film inhomogeneities and reactions of O2(-) with the solvent and impurities, especially in the cathode pores.
Document ID
19910054833
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dominey, L. A. (Covalent Associates, Inc. Woburn, MA, United States)
Goldman, J. L. (Covalent Associates, Inc. Woburn, MA, United States)
Koch, V. R. (Covalent Associates, Inc. Woburn, MA, United States)
Nanjundiah, C. (Covalent Associates, Inc. Woburn, MA, United States)