This work presents the electrochemical performance of Ni-rich Li[Ni_0.88Co_0.09Mn_0.03]O₂ (LNCM-88) synthesized by using pure and recycled MeSO₄ solutions and then surface-coated with Zeolite Socony Mobil-5 (ZSM-5). X-ray powder diffraction (XRD) patterns of uncoated and ZSM-5-coated LNCM-88 showed α-NaFeO₂ structures in the space group R3̅m. Based on the results, the uncoated LNCM-88 prepared from a pure solution exhibited better performance during the initial cycles. However, uncoated LNCM-88 produced from the mixed solution demonstrated greater long-term durability than the pure solution, retaining 93.5% of its initial capacity after 62 cycles. Additionally, coated (0.5 wt % ZSM-5) LNCM-88 yielded the highest initial charge capacity (241.8 mAh g^–1), discharge capacity (221.2 mAh g^–1), and initial Coulombic efficiency (93.8%). The ZSM-5 coating facilitated rapid Li⁺ diffusion, reduced cation mixing, and increased the lattice space, leading to enhanced performance. This study highlighted the significant benefits of ZSM-5 coating in improving the electrochemical performance of Ni-rich LNCM-88 cathode materials, making them promising candidates for advanced lithium-ion batteries.

中文翻译：

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用于增强锂离子电池中富镍 Li[Ni0.88Co0.09Mn0.03]O2 正极性能的 ZSM-5 涂层


这项工作展示了富镍Li[Ni _0.88 Co _0.09 Mn _0.03 ]O ₂ (LNCM-88)的电化学性能使用纯净和回收的 MeSO ₄ 溶液合成，然后表面涂覆沸石 Socony Mobil-5 (ZSM-5)。未涂层和 ZSM-5 涂层的 LNCM-88 的 X 射线粉末衍射（XRD）图显示空间群 R3̅m 中的 α-NaFeO ₂ 结构。根据结果​​，由纯溶液制备的未涂覆的 LNCM-88 在初始循环中表现出更好的性能。然而，由混合溶液生产的未涂层 LNCM-88 表现出比纯溶液更高的长期耐久性，在 62 个循环后保留了 93.5% 的初始容量。此外，涂覆的（0.5 wt% ZSM-5）LNCM-88 产生了最高的初始充电容量（241.8 mAh g ^–1 ）、放电容量（221.2 mAh g ^–1 ）和初始容量。库仑效率（93.8%）。 ZSM-5涂层促进了Li ⁺ 的快速扩散，减少了阳离子混合，并增加了晶格空间，从而提高了性能。这项研究强调了 ZSM-5 涂层在提高富镍 LNCM-88 正极材料电化学性能方面的显着优势，使其成为先进锂离子电池的有希望的候选材料。