Abstract：A case of imported goods declared as “nickel-cobalt material” was characterized by multi-technology combination, and its source attribute was confirmed through analysis, and the feasibility of whether it could be used as raw material was discussed. The results provided technical support for import supervision. X-ray fluorescence spectrometry, carbon-sulfur analysis, headspace gas chromatography mass spectrometry, pyrolysis gas chromatography mass spectrometry, X-ray diffraction analysis, electro microscope energy spectrum, potentiometric titration, atomic absorption spectrometry and thermogravimetric analysis combined with sensory detection were employed for the testing. It was compared with the relevant literatures for traceability analysis. The micro-morphology, elemental composition, physical phase composition, toxic substances, organic compounds and other characteristics of the sample were analyzed. The results showed that the sample was mainly a ternary material of nickel-cobalt-lithium manganate, and also contained a small amount of metal aluminum chips, elemental carbon and organic compounds, which had the composition characteristics of lithium-ion battery cathode wafers. Combined with the appearance and composition characteristics of the sample, it was confirmed that the sample was the recycled powder of lithium-ion battery cathode wafers.
余淑媛, 王刚, 徐勤, 任聪, 孙乐纯, 冯均利. 镍钴物料的来源分析及进口可用做原料的可行性探讨[J]. 冶金分析, 2024, 44(6): 49-56.
YU Shuyuan, WANG Gang, XU Qin, REN Cong, SUN Lechun, FENG Junli. Source analysis of nickel-cobalt material and exploration on the feasibility as importing raw material. , 2024, 44(6): 49-56.
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