用球形化学二氧化锰制备锰酸锂的研究  

Preparation of Mn Acid Lithium with Spherized Chemical Mn Dioxide

作　　者：李卫[1] 田文怀[1] 朱智[2] 其鲁[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]北京大学化学与分子工程学院,北京100871

出　　处：《中国锰业》2014年第1期26-29,共4页China Manganese Industry

摘　　要：采用液相氧化还原的方法,制备了适合于锰酸锂合成的高密度、高纯度球形化学二氧化锰。实验结果表明反应温度、反应物浓度、pH值、加料速度是影响生成物物理化学性质的主要因素。通过优化反应条件,在溶液的pH=2,温度T=50℃,反应物硫酸锰浓度C=0.3 mol/L,加料速度10 mL/min的条件下,可以制备出高密度球形化学二氧化锰;通过H+离子交换法降低二氧化锰中钾离子含量,从而得到高纯度化学二氧化锰。This article, in the method of liquid phase oxidation reduction, thinks that it is suitable for lithium manganese acid synthesis to prepare in high density, high purity spherized chemical manganese dioxide. The experimental results show that reaction temperature, including reactant concentration, pH value and the feeding speed, is the main factor to influence the material generation in physical and chemical properties. By optimizing reaction conditions, in a solution of pH = 2, T = 50℃temperature and reactant concentration of manganese sulfate C = 0. 3 mol/L, the feeding speed is 10 mL/min conditions, as can be high density spherized chemical manganese dioxide to prepare. By H ^＋ ion exchange method, we can reduce the potassium content in manganese dioxide, withresulting in high purity chemical manganese dioxide.

关 键 词：锂离子动力电池 锰酸锂 化学二氧化锰 

分 类 号：TM911[电气工程—电力电子与电力传动] TQ137.12[化学工程—无机化工]