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Effect of Cation Substitution on the Formation of Microcracks in Ni-Rich Layered Oxides

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Transmission electron microscopy is used to study the formation of microcracks in agglomerated particles of positive electrode (cathode) materials based on Ni-rich layered oxide LiNi0.6Mn0.2Co0.2O2. The effect the magnesium cation additive has on the stability of the material against the accumulation of structural defects and formation of cracks upon prolonged galvanostatic cycling is demonstrated and a mechanism of stress relaxation is proposed.

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ACKNOWLEDGMENTS

The authors thank the Skoltech Advanced Imaging Core Facility (AICF) for giving us access to their scientific equipment.

Funding

This work was supported by the Russian Science Foundation, project no. 23-73-30003.

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Corresponding author

Correspondence to A. M. Abakumov.

Additional information

Translated by E. Bondareva

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Moiseev, I.A., Golubnichiy, A.A., Pavlova, A.P. et al. Effect of Cation Substitution on the Formation of Microcracks in Ni-Rich Layered Oxides. Bull. Russ. Acad. Sci. Phys. 87, 1449–1454 (2023). https://doi.org/10.3103/S1062873823703471

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  • DOI: https://doi.org/10.3103/S1062873823703471

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