Title

Inhibition of electrolyte oxidation in lithium ion batteries with electrolyte additives

Document Type

Conference Proceeding

Date of Original Version

12-1-2010

Abstract

The incorporation of additives designed to sacrificially react on the surface of cathode materials of lithium ion batteries has been investigated. Addition of low concentrations of various additives to 1 M LiPF6 in 1:1:1 EC/DEC/DMC improves the capacity retention of Li/Li1.17Mn0.58Ni0.25O2 cells cycled to 4.9 V vs Li. Surface analysis of the cathode materials (XPS and IR) suggest that structure of the cathode surface film is modified by the presence of the additives resulting in a decrease in detrimental electrolyte oxidation reactions on the cathode surface. Film forming mechanisms and structures will be discussed.

Publication Title

ACS National Meeting Book of Abstracts

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