Ni-rich layered oxides are potential cathode candidate’s materials for Li-ion batteries due to their low cost and high energy density. However, it is difficult to reproducibly prepare uniformly distributed element and well-controlled morphology of Ni-rich layered oxide particles. This study develops a continuous microfluidic reaction process to synthesize spherical carbonate precursors (Ni_0.6Mn_0.2Co_0.2CO₃). The as-synthesized LiNi_0.6Co_0.2Mn_0.2O₂ materials exhibit well-defined microsphere morphology, uniform particles size distribution, better thermal stability and homogeneous transition metal distribution, due to the excellent mixing, well mass and heat transfer rate during the microfluidic reaction. Moreover, the as-prepared LiNi_0.6Co_0.2Mn_0.2O₂ materials achieve higher initial capacity, excellent electrochemical reversibility and capacity retention than that of the samples prepared by traditional co-precipitation. Therefore, our results demonstrate that microfluidic reaction is a simple and effective synthesis technology for preparing Ni-rich layered cathode.

富镍层状氧化物因其低成本和高能量密度而成为锂离子电池潜在的阴极候选材料。然而，难以再现地制备均匀分布的元素和富镍层状氧化物颗粒的形态得到良好控制。这项研究开发了一种连续的微流体反应过程，以合成球形碳酸盐前体（Ni _0.6 Mn _0.2 Co _0.2 CO ₃）。合成后的LiNi _0.6 Co _0.2 Mn _0.2 O ₂由于在微流体反应过程中具有出色的混合，良好的质量和传热速率，因此这些材料具有良好的微球形态，均匀的粒径分布，更好的热稳定性和均匀的过渡金属分布。此外，所制备的LiNi _0.6 Co _0.2 Mn _0.2 O ₂材料比传统共沉淀制备的样品具有更高的初始容量，优异的电化学可逆性和容量保持性。因此，我们的结果表明，微流体反应是制备富镍层状阴极的一种简单有效的合成技术。