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    Low-Cost Method for Making Lithium Transition Metal Olivines with High Energy Density
    6.
    发明申请
    Low-Cost Method for Making Lithium Transition Metal Olivines with High Energy Density 审中-公开
    制造锂过渡金属橄榄石具有高能量密度的低成本方法

    公开(公告)号：US20150349343A1

    公开(公告)日：2015-12-03

    申请号：US14410086

    申请日：2013-06-24

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Yu-Hua Kao ,  Towhid Hasan ,  Robin P. Zeibarth ,  Xindi Yu ,  Murali G. Theivanayagam ,  Lingbo Zhu ,  Stacie L. Santhany ,  Jui-Ching Lin ,  Ing-Feng HU

    IPC: H01M4/58 ,  H01M10/052 ,  C01B25/45

    CPC classification number: H01M4/5825 ,  C01B25/45 ,  C01P2006/40 ,  H01M10/052 ,  H01M2004/028

    Abstract: An inexpensive method for making lithium transition metal olivine particles that have high specific capacities is disclosed. The method includes the steps of: a) combining precursor materials including at least one source of lithium ions, at least one source of transition metal ions, at least one source of HxP04 ions where x is 0-2 and at least one source of carbonate, hydrogen carbonate, formate and/or acetate ions in a mixture of water and a liquid cosolvent which is miscible with water at the relative proportions of water and cosolvent that are present and which liquid cosolvent has a boiling temperature of at least 130° C.; wherein the mole ratio of lithium ions to HxP04 ions is from 0.9:1 to 1.2:1, and a lithium transition metal phosphate and at least one of carbonic acid, formic acid or acetic acid are formed, b) heating the resulting mixture at a temperature of up to 120° C. to selectively remove the carbonic acid, formic acid, acetic acid and/or carbon-containing decomposition products thereof from the reaction mixture, optionally remove some or all of the water from the reaction mixture and produce lithium transition metal olivine particles, and then c) separating the lithium transition metal olivine particles from the liquid cosolvent.

    Abstract translation: 公开了制造具有高比容量的锂过渡金属橄榄石颗粒的廉价方法。 该方法包括以下步骤：a）组合包括至少一种锂离子源，至少一种过渡金属离子源，至少一种H x PO 4离子源，其中x为0-2的至少一种源和至少一种碳酸根 ，水和液体共溶剂的混合物中的碳酸氢盐，甲酸盐和/或乙酸根离子，其与存在的水和共溶剂的相对比例与水可混溶，哪种液体助溶剂的沸点温度为至少130℃。 ; 其中锂离子与HxP04离子的摩尔比为0.9:1至1.2:1，并且形成锂过渡金属磷酸盐和至少一种碳酸，甲酸或乙酸，b）将所得混合物加热至 温度高达120℃以选择性地从反应混合物中除去碳酸，甲酸，乙酸和/或含碳的分解产物，任选地从反应混合物中除去一些或全部水，并产生锂过渡 金属橄榄石颗粒，然后c）从液体助溶剂中分离锂过渡金属橄榄石颗粒。

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