Development of NMC811@ZrO2 Core-Shell By Mechano-Fusion Process and Annealing Process for Next-Generation Lithium-Ion Batteries

Abstract

The application of advanced Ni-rich cathode materials in commercial lithium-ion batteries is increasing attention due to its high capacity. The Ni-rich lithium nickel manganese cobalt oxide (LiNi0.8Mn0.1Co0.1O2, NMC811) is a cathode material for the state-of-the-art lithium-ion battery due to its high specific energy, long cycle life, safety issue, and cost-effective. However, the challenges of NMC811 such as cation mixing, micro-crack, metal dissolution, and parasitic reaction urgently need to be overcome(1, 2). Both synergistic effects of the surface protection layer of NMC@ZrO2 core–shell structure using a solvent-free mechano-fusion process. Also, the doping concept of Zr4+ into the Li slab of its structure by the annealing process is of interest in this work. These two strategies can enhance the performance and life cycle of NMC811 batteries by addressing all of the issues of NMC811. REFERENCES T. Li, X.-Z. Yuan, L. Zhang, D. Song, K. Shi and C. Bock, Electrochemical Energy Reviews, 3, 43 (2020). W. Li, Journal of The Electrochemical Society, 167, 090514 (2020). Figure 1