电渗析复分解技术实现无机锂盐增值的研究  

Study on the Appreciation of Inorganic Lithium Salts by Electrodialysis Metathesis

作　　者：曹雯静 温伟芬 陈庆[1] CAO Wen-jing;WEN Wei-fen;CHEN Qing(College of Chemistry and Material Engineering,Wenzhou University,Wenzhou Zhejiang 325035,China)

机构地区：[1]温州大学化学与材料工程学院,浙江温州325035

出　　处：《辽宁化工》2023年第2期190-193,共4页Liaoning Chemical Industry

摘　　要：硝酸锂是一种重要的三元锂电池正极原料,但传统工艺制备硝酸锂的方法繁琐且不环保。因此,采用电渗析复分解技术直接由初级锂盐氯化锂制备获得更高价值的硝酸锂产品。在2.5 mol·L^(-1)的进料浓度下,LiNO_(3)产品的纯度高达96%,且电流效率也始终保持在90%以上,这种方法有望实现大规模生产硝酸锂产品。Lithium nitrate is an important precursor of LiNi1-y-zMnyCozO_(2)(NMC),but the traditional preparation process of lithium nitrate is complicated and not environmentally friendly.In this paper,electrodialysis metathesis technology was used to directly prepare lithium nitrate from primary lithium salt (LiCl).The purity of LiNO_(3)was as high as 96%,and the current efficiency was always above90%.This process is expected to become a new method for large-scale production of LiNO_(3).

关 键 词：电渗析复分解 硝酸锂 锂电池 

分 类 号：TQ131.11[化学工程—无机化工]