摘要
探讨不同的搅拌频率、不同的固含量对三元前驱体合成因素的影响,通过共沉淀反应过程中梯次降低搅拌频率和调控反应过程中浆料的固含量,制备了高球形度、高振实密度、粒度分布适中的超高镍三元前驱体Ni_(0.95)Co_(0.04)Mn_(0.01)(OH)_(2)。结果表明:以38 Hz开机,然后以每12 h下调3 Hz的速度梯次降低搅拌频率至20 Hz,并且将固含量控制在300 g/L,既可以保证高球形度、高振实密度,减少球粘连,又可以避免前驱体产生裂纹和碎球,制备出了高球形度、颗粒分布均匀的超高镍三元前驱体。
The effects of different stirring frequencies and different solid content on the synthesis of ternary precursor were discussed.By decreasing the stirring frequency step by step and regulating solid content of reaction slurry during the co-precipitation reaction,a ternary precursor Ni_(0.95)Co_(0.04)Mn_(0.01)(OH)_(2) with ultra-high nickel content,high sphericity,high tap density and moderate particle size distribution was prepared.The results show that starting at 38 Hz,and then reducing the stirring frequency to 20 Hz by lowering the speed of 3 Hz every 12 hours,and control the solid content to 300 g/L,which can not only ensure high sphericity and high tap density,reduce ball adhesion,but also avoid crack and broken ball in the precursor,and prepare ternary precursor with high sphericity and uniform distribution.
作者
吕志
王登登
许开华
刘郁
薛飞
向圣萍
Lv Zhi;Wang Dengdeng;Xu Kaihua;Liu Yu;Xue Fei;Xiang Shengping(GEM Co.,Ltd.,Shenzhen 518101,China;Jingmen GEM New Materials Co.,Ltd.,Jingmen 448124,China;GEM-ECOPRO(Jing Men)New Energy Materials Co.,Ltd.,Jingmen 448124,China)
出处
《广东化工》
CAS
2024年第6期49-52,共4页
Guangdong Chemical Industry
关键词
高球形度
搅拌频率
固含量
超高镍
三元前驱体
high sphericity
stirring frequency
solid content
ultra-high nickel
ternary precursor
