Nickel-rich layered oxides have drawn sustainable attentions for lithium ion batteries owing to their higher theoretical capacities and lower cost. However, nickel-rich layered oxides also have exposed several defects for commercial application, such as uncontrollable ordered layered structure, which leads to higher energy barrier for Li⁺ diffusion. In addition, suffering from structural mutability, the bulk nickel-rich cathode materials likely trigger overall volumetric variation and intergranular cracks, thus obstructing the lithium ion diffusion path and shortening the service life of the whole device. Herein, we report well-ordered layered LiNi_0.8Co_0.1Mn_0.1O₂ submicron spheroidal particles via an optimized co-precipitation and investigated as LIBs cathodes for high-performance lithium storage. The as-fabricated LiNi_0.8Co_0.1Mn_0.1O₂ delivers high initial capacity of 228 mAh g^–1, remarkable energy density of 866 Wh kg^–1, rapid Li ion diffusion coefficient (10^–9 cm² s^–1) and low voltage decay. The remarkable electrochemical performance should be ascribed to the well-ordered layered structure and uniform submicron spheroidal particles, which enhance the structural stability and ameliorate strain relaxation via reducing the parcel size and shortening Li-ion diffusion distance. This work anticipatorily provides an inspiration to better design particle morphology for structural stability and rate capability in electrochemistry energy storage devices.

富镍层状氧化物因其较高的理论容量和较低的成本而引起了锂离子电池的可持续关注。但是，富镍层状氧化物也暴露出了一些商业应用中的缺陷，例如不可控的有序层状结构，这导致了Li ⁺扩散的更高的能垒。另外，由于结构可变性，大量的富镍阴极材料可能触发整体的体积变化和晶间裂纹，从而阻碍了锂离子的扩散路径并缩短了整个装置的使用寿命。在此，我们报告了层状有序的LiNi _0.8 Co _0.1 Mn _0.1 O ₂亚微米球形颗粒经过优化的共沉淀，并作为高性能锂存储的LIB阴极进行了研究。制成的LiNi _0.8 Co _0.1 Mn _0.1 O ₂可提供228 mAh g ^–1的高初始容量，卓越的866 Wh kg ^–1能量密度，快速的Li离子扩散系数（10 ^–9 cm ² s ^–1））和低电压衰减。出色的电化学性能应归因于层状结构良好和均匀的亚微米球形颗粒，它们通过减小包裹尺寸和缩短锂离子扩散距离而增强了结构稳定性并改善了应变松弛。这项工作有望为更好地设计颗粒形态提供灵感，以提高电化学能量存储设备的结构稳定性和速率能力。