锂离子电池正极材料中钴、镍、锰的测定

Determination of Co, Ni, Mn in cathode material of Li-ion battery

采用原子吸收分光光度法对锂离子电池正极材料中高含量的钴、镍、锰成分进行测定。探讨了利用原子吸收分光光度计,调整燃烧头角度和采用对应元素的次灵敏线对高含量钴、镍、锰进行测定的条件。结果表明:该方法具有较好的准确度和精密度,回收率为97 7%～105 3 %,相对平均偏差小于0 76%。

The flame atomic absorption spectrophotometry was used to determine high-contents Co, Ni, Mn in cathode materials of Li-ion battery. The measurement conditions were studied. The high-content Co, Ni, Mn were determined by adjusting angle of burner and secondary absorbing wavelength in the flame atomic absorption spectrophotometry.The results showed the method was accurate and precision with the recovery of 97.7%～105.3%,the RSD was below 0.76%.