LixNi1/3Co1/3Mn1/3O2中主体及杂质的测定

采用空气-乙炔火焰原子吸收光谱标准加入法对锂离子蓄电池正极材料LixNi1/3Co1/3Mn1/3O2中主体及杂质进行测定.对样品测定过程中的影响因素进行了综合考虑.解决了基体干扰、共存离子干扰、电离干扰、背景吸收干扰等一系列问题.拟定了各元素的最佳测试条件;并进行了方法的精密度与回收率实验.结果表明:该分析方法可用于实际样品分析.能同时简单、快捷、准确、环保地测定常量主体与微量杂质.

Determination of the main elements and impurities LixNi1/3Co1/3Mn1/3O2

The main elements and impurities in cathode material LixNi1/3Co1/3Mn1/3O2 of lithium ion battery were determined by air-ethyne flame atomic absorbing spectral method with standard addition technique. Considering synthetically the influence factors in the process of determination, the matrix interference,ions interference, ionization interference, background absorption interference and so on were solved, and the most suitable condition for every element was prepared, and the experiments of precision and recovery were carried on. The results show that this method can be used in the real sample analysis, determine the main elements and microelements at the same time, simple, shortcut, precise and environmental protection.