前驱体磷酸铁中磷含量测定的不确定度评定  

Evaluation of measurement uncertainty of phosphorous content in raw material FePO_4

作　　者：马小利[1] 白晓艳[1] 张超[1] 唐海波[1] 

机构地区：[1]北京有色金属研究总院动力电池研究中心,北京100088

出　　处：《电源技术》2015年第9期1855-1858,共4页Chinese Journal of Power Sources

基　　金：国家"863"课题项目资助(2013AA050903)和(2013-AA050906)

摘　　要：建立了用于制备电池正极材料磷酸铁锂前驱体FePO4中磷含量的化学分析方法,并讨论了喹钼柠酮作沉淀剂测定FePO4中磷含量不确定度的影响因素,给出了评定步骤,采用统计方法得到A类不确定度,利用各种信息对B类不确定度,包括测量重复性、样品称量、试液转移、沉淀质量、滤液和洗涤液中磷的含量、沉淀损失磷的质量、沉淀包夹等各个不确定度分量逐个进行量化,从而获得合成标准不确定度和扩展不确定度。An analysis method of phosphorous content in FePO4 was established for the preparation of lithium iron phosphate cathode material, and the factors on the measurement uncertainty of phosphorous content were discussed, then the evaluation steps were given. A type uncertainty was calculated by statistical method, and B type uncertainty was individually quantified, including measurement reproducibility, sample weighing, solution transferring, precipitation weight, phosphorous content in filtrate and lotion, loss and teamed weight of precipitation. The combining uncertainty and expanding uncertainty were finally obtained.

关 键 词：磷钼酸喹啉 重量法 磷酸铁 磷含量 不确定度 

分 类 号：TM912.9[电气工程—电力电子与电力传动]