SURFACE TREATMENTS OF LI1-XO4 SPINELS FOR IMPROVED ELEVATED-TEMPERATURE PERFORMANCE(XMN2)

In this paper, we introduce the use of surface treatments to improve t he elevated temperature storage characteristics of the Li1+xMn2-xO4 sp inel in Li-ion batteries. Two approaches are introduced, the first con sists of the application of an inorganic lithium berate glass composit ion to the surface, the second utilizes an acetylacetone complexing ag ent. All surface treatments were found to improve the elevated tempera ture performance of the Li1+xMn2-xO4 spinel to some degree. Results ar e discussed with respect to the active failure mechanisms.