Determination of manganese in lithium-rich manganese-based cathode materials for lithium battery by inductively coupled plasma atomic emission spectrometry
JIN Hong, LI Qiang, LIU Yan-xia
School of Chemistry and Chemical Engineering, Jining Normal University, Wulanchabu 012000, China
Abstract：The accurate determination of manganese content in lithium-rich manganese-based cathode materials for lithium battery has important significance for the research of charge and discharge performance. The sample was decomposed by heating at 100℃ with 20mL of HCl and 5mL of HNO3. Mn 257.61nm was selected as the analytical line for the determination of manganese by inductively coupled plasma atomic emission spectrometry (ICP-AES). Consequently the determination method of manganese in lithium-rich manganese-based cathode materials for lithium battery was established. The experimental results showed that all coexisting elements had no interference with the determination by selecting proper analytical lines. The mass concentration of manganese in range of 1.00-25.00μg/mL had good linearity to the emission intensity. The linear correlation coefficient of calibration curve was 0.9992. Meanwhile, the limit of detection was 0.16% and the limit of quantification was 0.53%. The proposed method was applied for the determination of manganese content in lithium-rich manganese-based cathode materials for lithium battery. The relative standard deviations (RSD, n=6) of results were between 1.9% and 3.4%. The spiked recoveries were between 97% and 104%. The found results had no significant difference with those obtained by potentiometric titration.
Yao Z,Zhang W,Shen S,et al.Hollow porous bowl-shaped lithium-rich cathode material for lithium-ion batteries with exceptional rate capability and stability[J].Journal of Power Sources,2018,380:164-173.
[3]
邓攀,常德民,姚文俐,等.三元正极材料中镍钴锰含量的化学分析测定[J].化学试剂,2016,38(2):137-140.DENG Pan,CHANG De-min,YAO Wen-li,et al.Determination of nickel,cobalt and manganese content for Ni-Co-Mn ternary cathode material by chemical analysis method[J].Chemical Reagents,2016,38(2):137-140.
[4]
朱玉巧.全自动电位滴定仪测试锰酸锂正极材料中锰含量的方法[J].电池工业,2018,22(1):3-5.ZHU Yu-qiao.The analysis of Mn in LiMn2O4 cathode material by automatic potentiometric titration[J].Chinese Battery Industry,2018,22(1):3-5.
[5]
马小利,白晓艳,卢华权,等.富锂固溶体正极材料中锰含量的测定[J].中国无机分析化学,2015,5(2):43-46.MA Xiao-li,BAI Xiao-yan,LU Hua-quan,et al.Determination of manganese content in lithium-enriched solid solution [J].Chinese Jorunal of Inorganic Analytical Chemistry,2015,5(2):43-46.
[6]
徐艳燕,朱国忠,柴瑾瑜,等.电感耦合等离子体原子发射光谱法测定钴产品生产过程净化液中12种微量元素[J].冶金分析,2018,38(12):26-35.XU Yan-yan,ZHU Guo-zhong,CHAI Jin-yu,et al.Determination of twelve microelements in purified solution during production process of cobalt products by inductively coupled plasma atomic emission spectrometry[J].Metallurgical Analysis,2018,38(12):26-35.
[7]
张志刚,章发,李方军,等.电感耦合等离子体原子发射光谱法测定硅铁钡孕育剂中9种元素[J].冶金分析,2018,38 (8):53-57.ZHANG Zhi-gang,ZHANG Fa,LI Fang-jun,et al.Determination of nine elements in silicon-iron-barium inoculant by inductively coupled plasma atomic emission spectrometry[J].Metallurgical Analysis,2018,38(8):53-57.
[8]
曹蕾,尚永辉,陈佑宁,等.电感耦合等离子体发射光谱法测定三种苦荞茶中的矿质元素[J].应用化工,2016,45 (5):975-977.CAO Lei,SHANG Yong-hui,CHEN You-ning,et al.Determination of mineral elements in three kinds of buckwheat tea by ICP-OES[J].Applied Chemical Industry,2016,45(5):975-977.
[9]
胡丹静,张旭,严雪俊.微波消解-电感耦合等离子体原子发射光谱法测定3D硬金饰品中铅、砷、汞、镉的含量[J].理化检验:化学分册,2019,55(3):333-337.HU Dan-jing,ZHANG Xu,YAN Xue-jun.Determination of lead,arsenic,mercury,cadmium in 3D hard gold jewelry by ICP-AES with microwave digestion[J].Physical Testing and Chemical Analysis Part B:Chemical Analysis,2019,55(3):333-337.
刘宪彬,贾慧荣,褚振全.电感耦合等离子体原子发射光谱法测定锰铁合金、锰硅合金和金属锰中8种微量元素[J].冶金分析,2019,39(5):41-48.LIU Xian-bin,JIA Hui-rong,CHU Zhen-quan.Determination of eight microelements in ferromanganese alloy,ferromanganese-silicon alloy and manganese metal by inductively coupled plasma atomic emission spectrometry[J].Metallurgical Analysis,2019,39(5):41-48.
[12]
宋义运,陈雄飞,张芳,等.电位滴定测定富锂锰基正极材料中锰含量[J/OL].分析试验室:1-7.[2019-11-25].https://doi.org/10.13595/j.cnki.issn1000-0720.2019.061405.SONG Yi-yun,CHEN Xiong-fei,ZHANG Fang,et al.Determination of manganese content in lithium-rich manganese based cathode materials by potentiometric titration[J/OL].Chinese Journal of Analysis Laboratory:1-7.[2019-11-25].https://doi.org/10.13595/j.cnki.issn1000-0720.2019.061405.
