Inhibition of electrolyte oxidation in lithium ion batteries with electrolyte additives
Document Type
Article
Date of Original Version
10-22-2009
Abstract
The incorporation of additives designed to sacrificially react on the surface of cathode materials in lithium ion batteries has been investigated. Addition of low concentrations of either 2,5-dihydrofuran or γ -butyrolactone to 1 M LiPF6 in 1:1:1 ethylene carbonate/diethyl carbonate/dimethyl carbonate improves the capacity retention of Li/Li 1.17Mn0.58Ni0.25O2 cells cycled at 4.9 V vs Li. A surface analysis of the cathode materials (X-ray photoelectron spectroscopy and IR) suggests that the 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. © 2009 The Electrochemical Society.
Publication Title, e.g., Journal
Electrochemical and Solid-State Letters
Volume
12
Issue
12
Citation/Publisher Attribution
Yang, Li, and Brett L. Lucht. "Inhibition of electrolyte oxidation in lithium ion batteries with electrolyte additives." Electrochemical and Solid-State Letters 12, 12 (2009). doi: 10.1149/1.3238486.
