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    Manufacturing method for lithium hexafluoro phosphate
    1.
    发明授权
    Manufacturing method for lithium hexafluoro phosphate 有权
    六氟磷酸锂的制备方法

    公开(公告)号：US06387340B1

    公开(公告)日：2002-05-14

    申请号：US09475074

    申请日：1999-12-29

    申请人： Doo-Chan Na ,  Byung-Won Woo ,  Soon-Hong Park ,  Jun-Ho Lee

    发明人： Doo-Chan Na ,  Byung-Won Woo ,  Soon-Hong Park ,  Jun-Ho Lee

    IPC分类号： C01B2510

    CPC分类号： H01M10/0525 ,  C01D15/005 ,  H01M10/0568

    摘要： A method of preparing lithium hexafluoro phosphate (LiPF6) using phosphorous pentachloride (PCl5), lithium chloride (LiCl), and hydrogen fluoride (HF) as raw materials. The method includes the steps of: (a) reacting the phosphorous pentafluoride with the hydrogen fluoride to prepare phosphorous pentafluoride (PF5), and (b) reacting the phosphorous pentafluoride with the lithium chloride in a hydrogen fluoride to prepare the lithium hexafluoro phosphate. Also, in this method, anhydrous hydrogen fluoride, from which moisture was removed by treating with F2 gas, is used in the steps (a) and (b), and the step (b) further comprises contacting the reaction system of the step (b) with F2 gas. Accordingly, as the method adopts relatively cheap raw materials, such as PCl5, LiCl and the like, while a highly pure F2 obtained by an electrolysis is used in the reaction system, it has an advantage in that it enables lithium hexafluoro phosphate (LiPF6) to be prepared at a high yield and purity.

    摘要翻译： 以五氯化磷（PCl5），氯化锂（LiCl）和氟化氢（HF）为原料制备六氟磷酸锂（LiPF 6）的方法。 该方法包括以下步骤：（a）使五氟化磷与氟化氢反应制备五氟化磷（PF5），和（b）使氟化氢中的五氟化磷与氯化锂反应以制备六氟磷酸锂。 此外，在该方法中，在步骤（a）和（b）中使用通过用F2气体处理除去水分的无水氟化氢，并且步骤（b）还包括使步骤 b）用F2气。 因此，由于该方法采用比较便宜的原料，例如PCl5，LiCl等，而在反应体系中使用通过电解获得的高纯度的F2，其优点在于能够使六氟磷酸锂（LiPF 6） 以高产率和纯度制备。