Cobalt/aluminum co-substitution in a LiNi0.9Mn0.1O2 layered cathode for improving kinetics

Abstract

We report the improved kinetic mechanism of a nickel-rich LiNi_0.84Mn_0.10Co_0.03Al_0.03O₂ cathode. The important role of Co/Al in inhibiting cation disorder to increase the lithium ion diffusion rate is revealed. Impressively, it retains an excellent capacity retention of 76.8% after 200 cycles under the high-rate condition (5C).