Determination of twenty impurity elements in anode material lithium cobalt oxide for lithium-ion battery by inductively coupled plasma mass spectrometry
LIU Hong-wei1, XIE Hua-lin*2
1. College of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China; 2. College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling 408100, China
Abstract：The analysis method of 20 impurity elements(Na, Mg, Al, K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, As, Pd, Ag, Cd, Sn, Au, Pb and Bi) in lithium cobalt oxide by inductively coupled plasma mass spectrometry (ICP-MS) was discussed. The sample was dissolved via microwave digestion with nitric acid and hydrochloric acid. The sample solution was diluted with ultrapure water and then the impurity elements were directly determined by ICP-MS. Helium or hydrogen was introduced into octopole reaction system(ORS) to eliminate the mass interference of polyatomic ions from high salt matrix on testing elements. Mixed internal standard solution of 45Sc, 89Y, 103Rh and 205Tl was selected to correct matrix interference and drifting. The detection limits of 20 testing elements were between 0.006 and 0.41 μg/L. Precision and accuracy test were conducted on lithium-ion battery anode material (lithium cobalt oxide) samples. The relative standard deviations (RSD) were in the range of 1.3 %-5.7 %. The recoveries of standard addition were 91 %-107 %. The proposed method was used to determine lithium cobalt oxide samples of different batches, and the results were consistent with those obtained by other methods (AAS, AFS and ICP-AES).
刘宏伟,谢华林. 电感耦合等离子体质谱法测定锂离子电池正极材料钴酸锂中20种杂质元素[J]. 冶金分析, 2013, 33(7): 30-34.
LIU Hong-wei, XIE Hua-lin. Determination of twenty impurity elements in anode material lithium cobalt oxide for lithium-ion battery by inductively coupled plasma mass spectrometry. , 2013, 33(7): 30-34.
Chen C H, Hwang B J, Chen C Y, et al. Soft X-ray absorption spectroscopy studies on the chemically delithiated commercial LiCoO2 cathode material[J]. J. Power Sources, 2007, 174(2): 938-943.
[3]
于力, 汤淑芳. 氢化物发生-原子荧光光谱法测定钴酸锂中砷[J]. 矿冶(Mining and Metallurgy), 2009, 18(1): 100-102.
Leonhard P, Pepelnik R, Prange A, et al. Analysis of diluted sea-water at the ng L-1 level using an ICP-MS with an octopole reaction cell[J]. J. Anal. At. Spectrom. , 2002, 17(3): 189-196.
[7]
Elwaer N, Hintelmann H. Comparing the precision of selenium isotope ratio measurements using collision cell and sector field inductively coupled plasma mass spectrometry[J]. Talanta, 2008, 75(1): 205-214.
[8]
Pick D, Leiterer M, Einax J W. Reduction of polyatomic interferences in biological material using dynamic reaction cell ICP-MS[J]. Microchem.J., 2010, 95(2): 315-319.
[9]
Guillong M, Danyushevsky L, Walle M, et al. The effect of quadrupole ICPMS interface and ion lens design on argide formation. Implications for LA-ICPMS analysis of PGE’s in geological samples[J]. J. Anal. At. Spectrom. , 2011, 26(7): 1401-1407.
