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    METHOD FOR PRODUCING HIGH-PURITY ELECTRODE MATERIALS
    3.
    发明授权
    METHOD FOR PRODUCING HIGH-PURITY ELECTRODE MATERIALS 有权

    公开(公告)号：EP2805367B1

    公开(公告)日：2018-11-21

    申请号：EP13701034.4

    申请日：2013-01-18

    申请人： Johnson Matthey PLC

    发明人： VOGLER, Christian ,  BAUER, Peter ,  NUSPL, Gerhard ,  HOLZAPFEL, Michael ,  GÖKNUR, Ömer

    IPC分类号： H01M4/485 ,  H01M10/0525 ,  C01G23/00 ,  H01M4/58 ,  H01M4/131 ,  H01M4/136 ,  C01B25/45

    CPC分类号： H01M4/366 ,  C01B25/45 ,  C01G23/005 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2004/80 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/131 ,  H01M4/136 ,  H01M4/364 ,  H01M4/485 ,  H01M4/5825 ,  H01M10/0525

    摘要： Producing a fine mixed lithium transition metal phosphate, or a lithium titanate, comprises: (a) providing starting compounds of lithium transition metal phosphate or lithium titanate comprising e.g. a lithium source; (b) converting the starting compounds to a precursor mixture and/or precursor suspension, which is then optionally converted to a lithium transition metal phosphate or lithium titanate compound in the form of a suspension; and (c) recovering the lithium transition metal phosphate compound or lithium titanate compounds or the precursor mixture and/or precursor suspension. Producing a magnetic contamination-free fine mixed lithium transition metal phosphate, or a lithium titanate, comprises: (a) providing starting compounds of lithium transition metal phosphate or lithium titanate comprising a lithium source, a transition metal source and a phosphate source or lithium-, titanium- and oxygen-sources, where magnetic impurities and undissolved or non-suspended particles are separated from the source; (b) converting the starting compounds to a precursor mixture and/or precursor suspension, which is then optionally converted to a lithium transition metal phosphate or lithium titanate compound in the form of a suspension, where magnetic impurities and undissolved or non-suspended particles are separated from the suspension; and (c) recovering the lithium transition metal phosphate compound or lithium titanate compounds or the precursor mixture and/or precursor suspension, which is then thermally treated and then freed of magnetic impurities. An independent claim is included for the lithium transition metal phosphate or a lithium titanate compounds with less than 1 ppm of magnetic impurities obtained by the process.