Li[sub 2+x]Mn[sub 0.91]Cr[sub 1.09]O[sub 4] Cathode Materials for Li-Ion Cells

Abstract

A new series of cathode materials was prepared from the reaction of and by heat‐treatment at for 3, 6, and . The length of the heat‐treatment significantly influenced the capacity, with longer heat‐treatment times resulting in smaller capacities. phases heat‐treated for showed the highest discharge capacity of at the rate cycled between 4.5 and . Tests of in cells showed an initial capacity of at the rate, and relatively good rate capability from the to the rate between 4.5 and . ©2000 The Electrochemical Society