Augmenting electrochemical performance of nickel-rich NMC for lithium-ion batteries by combining material synthesis modification and redistribution of transition metal ion concentration

Modification of synthesis approach and material surface are well known to be elegant straightforward routes to augment the electrochemical performance of cathode materials for lithium-ion batteries. In this study, we combined the co-precipitation method modification and surface modification of material by redistributing the transitions metal ions content to synthesis nickel-rich NMC (Li1.0Ni0.8Mn0.1Co0.1O2, NMC811 M). The pristine NMC811, and NMC811 M both exhibit high energy storage capacity with initial discharge specific capacity up to approximately 220 mAh g−1 at a current density of 10 mA g−1. The achieved results also indicate that, the NMC811 M with transition metal ion content redistribution is of better capacity retention than the pristine NMC811, it maintains approximately 73 of its original capacity after 100 cycles corresponding to a specific capacity of 153 mAh g−1. This work provides a simple but effective approach dedicated to significantly enhancing the electrochemical performance of nickel-rich NMC, and thus paves a way towards high performance battery electrodes. © 2023 Elsevier Ltd