High-capacity and high-power nickel-based cathode materials have become the principal candidates for a lithium-ion energy storage system powering electrified transportation units. With high nickel content, the cathodes are of great interest for delivering the desired specific energy and energy density. However, the cells still suffer from fast capacity decay and low thermal-abuse tolerance to high voltage. At the highly delithiated state, the damage in the cell is mainly from severe parasitic reactions, including the oxygen evolution reaction in the cathode and oxidization of the organic electrolyte. These side reactions rapidly weaken the system's rate capacity and cyclability. Solutions are being sought to provide safe operation and practical application. Three strategies have proven to be encouraging choices: surface coating, a core-shell structure, and a concentration gradient structure. For each strategy, the material architecture, fabrication procedure, operation principle, advances, and challenges are discussed in this review. The prospects for further developments are also summarized.

高容量和高功率的镍基正极材料已成为为电动运输单元提供动力的锂离子储能系统的主要候选材料。由于镍含量高，因此阴极对于传递所需的比能和能量密度非常感兴趣。然而，电池仍然遭受快速的容量衰减和对高压的低热滥用耐受性的困扰。在高度脱锂状态下，电池中的损坏主要来自严重的寄生反应，包括阴极中的氧释放反应和有机电解质的氧化。这些副反应会迅速削弱系统的速率能力和可循环性。正在寻求提供安全操作和实际应用的解决方案。事实证明，以下三种策略是令人鼓舞的选择：表面涂层，核-壳结构和浓度梯度结构。对于每种策略，本文都会讨论材料的结构，制造程序，操作原理，进展和挑战。还总结了进一步发展的前景。