LiCoO_2样品的消解及溶液中钴含量的测定  

Study on the digestion of LiCoO_2 and the determination of Co content in the solutions

作　　者：章福平[1] 李沄[1] 丁乐[1] 吴燕娟[1] 柳清[1] 李磊[1] 丁志远[1] 

机构地区：[1]南京大学化学化工学院

出　　处：《电池工业》2008年第4期282-285,共4页Chinese Battery Industry

基　　金：南京大学引进人才培养基金;南京大学分析测试基金;南京大学化学化工学院大学化学开放实验资助课题

摘　　要：研究了多种消解试剂对LiCoO2样品的消解情况。并通过电位返滴定和EDTA配位返滴定分析了消解后的溶液中钴的价态及含量。结果表明,用浓盐酸并加热至微沸能完全消解LiCoO2样品。消解机理主要是将LiCoO2还原为Co2+,离解成Co3+占次要地位。EDTA配位返滴定测得LiCoO2消解液中钴的回收率可达(99.40±3.96)%。In this paper, the digestion of LiCoO2 by different digestive solvents was reported. The species and the content of Co in the related digestion solutions were measured by the potential back titration and EDTA complex back titration respectively, The results showed that, by utilization of concentrated HCl and by heating the digested solution, the LiCoO2 sample was completely digested. The reduction of LiCoO2 to Co^2＋ was the main reaction although the generation of Co^3＋ was also observed. The recovery rate of Co in LiCoO2 digested solution by EDTA complex back titration could reach （99.40 ± 3.96）%.

关 键 词：LICOO2 CO 浓盐酸 电位返滴定 EDTA配位返滴定 锂离子电池 

分 类 号：O657.31[理学—分析化学]