共沉淀法制备镍钴锰酸锂三元正极材料前驱体的研究

Study on Preparation of Precursors of Lithium Nickel-Cobalt-Manganate Ternary Cathode Materials by Coprecipitation

试验采用氢氧化钠共沉淀法制备镍钴锰酸锂三元电池正极材料。探究不同pH值、陈化时间、过锂量及煅烧温度对镍钴锰三元正极材料前驱体性能的影响。试验结果表明,反应pH值为11、陈化时间为1 h、过锂量为5%、煅烧温度为850℃时所制得的三元正极材料振实密度最高,同时通过SEM、XRD测试证实,其性能最优。实验结果对于制备镍钴锰酸锂三元正极材料前驱体具有一定参考价值。

The sodium hydroxide co-precipitation method was employed for the synthesis of lithium nickel cobalt manganese oxide ternary cathode material.The influence of various factors,including pH values,aging time,lithium content,and calcination temperature on the precursor's performance was investigated.Experimental results indicate that the highest tap density of the ternary cathode material is achieved at a reaction pH value of 11,an aging time of 1 hour,a lithium content of 5%,and a calcination temperature of 850℃.Additionally,SEM and XRD analyses confirm its optimal performance.These experimental findings provide valuable insights for the preparation of precursor materials for lithium nickel cobalt manganese oxide ternary cathodes.