Although LiNi_0.8Co_0.15Al_0.05O₂ (NCA) has various merits such as a high discharge capacity of ~ 195 mAh g⁻¹, improved stability, and low cost, intergranular cracks in the NCA structure can suppress the electronic/ionic motion in the cathode. Thus, in this study, to minimize crack portions in the NCA cathode, we synthesized dense NCA cathode materials using micelle structures controlled with pluronic acid (F127) and polyvinyl alcohol (PVA) as polymer templates and evaluated the electrochemical performance in LIBs using coin-type cells. We found that all the as-prepared samples showed the LiNiO₂-based structures doped with Co and Al. With an increasing amount of PVA, the 1st particles can be more agglomerated during heating and thus increase the size of the 2nd particles. Consequently, a significantly dense NCA structure consisting of less cracked 2nd particles can be prepared in the presence of F127 and PVA. In particular, the NCA cathode prepared with an optimal ratio of F127 to PVA exhibited the best electrochemical properties, i.e., high capacity and superior cycle life.

尽管LiNi _0.8 Co _0.15 Al _0.05 O ₂（NCA）具有各种优点，例如〜195 mAh g ^-1的高放电容量，提高的稳定性和低成本，但NCA结构中的晶间裂纹可以抑制电子中的电子/离子运动。阴极。因此，在这项研究中，为了最大程度地减少NCA阴极中的裂纹部分，我们使用了以普鲁尼克酸（F127）和聚乙烯醇（PVA）控制的胶束结构作为聚合物模板来合成致密的NCA阴极材料，并使用硬币硬币法评估了LIB中的电化学性能。类型单元格。我们发现所有制备的样品均显示LiNiO ₂钴和铝掺杂的铁基结构。随着PVA含量的增加，第一颗粒在加热过程中会更结块，从而增加第二颗粒的​​尺寸。因此，可以在F127和PVA的存在下制备由较少裂纹的第二颗粒组成的非常致密的NCA结构。特别地，以F127与PVA的最佳比例制备的NCA阴极表现出最佳的电化学性质，即高容量和优异的循环寿命。