The new strategies of introducing lithium ions into nickel‑manganese‑cobalt carbonate resulting in LiNi_0.6Mn_0.2Co_0.2O₂ (NMC622) cathode material for Li-ion batteries were described. The proposed novel method is based on the co-precipitation of nickel‑manganese‑cobalt carbonate followed by wet impregnation with solutions of selected lithium salts (hydroxide, acetate or nitrate). The results of detailed characterization studies using nitrogen physisorption, TGA-MS, PXRD, SEM and DLS analysis indicate that wet impregnation using different lithium salts formed cathode materials of well-ordered layered structure with chemical composition and microstructure similar to that obtained using solid state reaction method. Galvanostatic cell cycling revealed promising electrochemical activity of all the NMC622 materials prepared using the proposed method. The first cycle discharge capacities of the materials obtained using lithium hydroxide, acetate, nitrate and carbonate are 177, 181, 180 and 187 mAh g⁻¹at 0.05C rate to 4.4 V vs. Li/Li⁺, whereas the discharge capacity retentions are 88, 91, 93 and 91% at 0.5C rate after 30 cycles, respectively. The best performance in the range of 0.1C-10C rates exhibited the cathode materials synthesized by wet impregnation method using lithium acetate and lithium nitrate as Li ions precursor.

将锂离子引入碳酸镍锰钴合金中产生LiNi _0.6 Mn _0.2 Co _0.2 O ₂的新策略描述了用于锂离子电池的（NMC622）正极材料。所提出的新方法基于镍-锰-钴碳酸盐的共沉淀，然后用选定的锂盐（氢氧化物，乙酸盐或硝酸盐）溶液湿法浸渍。使用氮的物理吸附，TGA-MS，PXRD，SEM和DLS分析进行的详细表征研究的结果表明，使用不同的锂盐进行的湿法浸渍形成的阴极材料具有良好的层状结构，其化学组成和微观结构与固态反应相似方法。恒电流细胞循环揭示了使用所提出的方法制备的所有NMC622材料的有希望的电化学活性。使用氢氧化锂，醋酸盐，^{− 1}在0.05C速率至4.4 V vs. Li / Li ^+时为^-1，而在30个循环后在0.5C速率下的放电容量保持率分别为88％，91％，93％和91％。在0.1C-10C速率范围内的最佳性能表现出采用乙酸锂和硝酸锂作为锂离子前体的湿法浸渍法合成的正极材料。