The lithiated nickel-cobalt-aluminum oxide (Li[Ni_0.8Co_0.15Al_0.05]O₂, NCA) cathode has become commercialized because it provides high discharge capacity with long cycle life. To further increase the capacity of existing NCA cathodes, the fraction of Ni in the NCA cathode has been progressively increased; however, this approach is limited by the deterioration of capacity and safety concerns. Here, we report fundamental electrochemical performances of W-doped Li[Ni_0.95Co_0.04Al_0.01]O₂ cathode (W-NCA95) with columnar grains by introducing WS₂. The microstructure-modified W-NCA95 delivers a high initial capacity of 242 mAh g^–1 (0.1 C) and retains 77.4% of its initial capacity after 1000 cycles, compared to 14.5% for Li[Ni_0.95Co_0.04Al_0.01]O₂ cathode (NCA95). The superior cycling performances of the W-NCA95 cathode are attributed to the reduction of the anisotropic volume change and the unique long rod-shaped primary particles morphology. The proposed W-NCA95 cathode paves the way for the development of Ni-rich layered LiMO₂ cathodes that can exhibit high capacity, superior cycling stability, and improved thermal stability.

锂化的镍钴铝氧化物（Li [Ni _0.8 Co _0.15 Al _0.05 ] O ₂，NCA）阴极已经商业化，因为它提供了高放电容量和长循环寿命。为了进一步增加现有NCA阴极的容量，NCA阴极中Ni的比例已逐渐增加。但是，这种方法受到容量和安全问题恶化的限制。在这里，我们通过引入WS _2报告了具有柱状晶粒的掺W的Li [Ni _0.95 Co _0.04 Al _0.01 ] O ₂阴极（W-NCA95）的基本电化学性能。经过微结构修饰的W-NCA95具有242 mAh g ^–1（0.1 C）的高初始容量，并且在1000次循环后保留其初始容量的77.4％，而Li [Ni _0.95 Co _0.04 Al _0.01 ] O ₂则为14.5％。阴极（NCA95）。W-NCA95阴极优异的循环性能归因于各向异性体积变化的减少和独特的长棒状初级颗粒形态。提出的W-NCA95阴极为开发具有高容量，优异的循环稳定性和改善的热稳定性的富Ni层状LiMO ₂阴极铺平了道路。