Abstract
Nickel-rich cathode has received much attention due to its high energy density, high capacity, low cost and environmental friendliness. The existence of intercrystalline microcracks in NCM seriously affects the structural stability and integrity of the battery crystal surface. Irreversible phase transitions result in changes in lattice parameters, the interface side reactions severely corrode the crystal surface, and secondary particle heterogeneity leads to uneven reactions. Common amorphous microcracks include single crystal, gradient doping, etc. This review first introduced the microcrack mechanism of NCM, and then summarized two solutions: single crystal and gradient doping. Finally, we presented new views and insights, and hope to give enlightenment on the subsequent inhibition of intercrystal microcrack, and construct the reasonable structure of NCM cathode.
Funder
the National Science Foundation of China
Fuzhou Science and Technology Bureau Project of China
the Fujian Provincial University Industry Cooperation Project of China
the Leading (Key) Projects of Fujian Province
the National Science Foundation of Fujian Province
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
4 articles.
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