ICP-OES法测定硅碳负极材料中的硅和17种杂质元素  

Determination of silicon and 17 impurity elements in silicon anode materials by ICP-OES

作　　者：刘文斌 符泽卫 许金泉 胡俊涛 胡文龙 LIU Wen-bin;FU Ze-wei;XU Jin-quan;HU Jun-tao;HU Wen-long(Yunnan Tin Group (Holding)Company Limited,Kunming Yunnan 650106.China)

机构地区：[1]云南锡业集团(控股)有限责任公司

出　　处：《电源技术》2019年第6期930-932,共3页Chinese Journal of Power Sources

摘　　要：采用HF+HNO3分解锂离子电池硅碳负极材料,在60 ℃温度下分解30 min,样品分解完全且几乎不损失。使用带氢氟酸进样系统的ICP-OES 测试硅碳负极材料中的硅和铝、锂、钴、钙、镉、铬、铜、铁、钾、镁、锰、钠、镍、铅、钛、钒、锌,3次测试硅的加标回收率为99.17%,精密度为0.07%。其他元素的加标回收率为91.11%~115.66%,精密度在0.24%~5.66%。该方法操作简便快捷,基体干扰小。The silicon carbon anode material of lithium ion battery was dissolved by HF+HNO3. The samples were decomposed completely under 60 ℃ for 30 min. The Si, Al, Li, Co, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Ti, V, Zn can be test by ICP-AES with polymerize sample inlet system. The recovery rate of silicon was 99.17% by test three times, and the precision was 0.07%. The recovery rate of other elements between 91.11%~126.69%, and the precision between 0.24%~5.66%. The method is simple and fast, and the matrix interference is small.

关 键 词：锂离子电池 硅碳负极材料 ICP-OES 

分 类 号：TM912[电气工程—电力电子与电力传动]