Determination method of cobalt doped lithium manganeseoxide composition
- 材料学院－已发表论文 
以盐酸羟胺为还原剂,用乙二胺四乙酸(EDTA)滴定法测定掺钴锂锰氧化物中锰和钴的总量,同时用硝酸铵-硫酸亚铁铵氧化还原法测定掺钴锂锰氧化物中总锰量。两者结合可以计算掺钴锂锰氧化物中锰和钴的组成。测出的锰和钴的含量与理论值接近,其中锰的含量准确率达99%以上。因此,与其它仪器分析方法相比,如与原子吸收光谱法(AAS)相比,该方法简便、可靠,准确度高,是一种较好的测定方法。This paper studied the determination method of cobalt doped lithium manganese oxides compostion. The total content of manganese and cobalt was determined by using NH2OH·HCl as a reducing agent in EDTA coordinating titration method, and the manganese content was determined by a oxidation-reduction titration method with NH4NO3-FeSO4·(NH4)2SO4. Then, the contents of manganese and cobalt were measured more accurately than some instrumental analyses. The ratio content measured of manganese and cobalt are similar to the value we set before experiments. The method is more simple, practical and accurate than other techniques such as AAS. Therefore, this is a useful and efficient method for determination of manganese content in cathode materials of Li-ion batteries.