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    Lithium Iron Phosphate Cathode Materials With Enhanced Energy Density And Power Performance
    1.
    发明申请
    Lithium Iron Phosphate Cathode Materials With Enhanced Energy Density And Power Performance 审中-公开
    具有增强的能量密度和功率性能的磷酸铁锂阴极材料

    公开(公告)号：US20100327223A1

    公开(公告)日：2010-12-30

    申请号：US12827565

    申请日：2010-06-30

    申请人： Karim ZAGHIB ,  Patrick Charest ,  Abdelbast Guerfi ,  Guoxian Liang

    发明人： Karim ZAGHIB ,  Patrick Charest ,  Abdelbast Guerfi ,  Guoxian Liang

    IPC分类号： H01M4/90 ,  B05D5/00

    CPC分类号： H01M4/5825 ,  H01M4/364 ,  H01M4/366 ,  H01M4/625 ,  H01M10/0525

    摘要： The invention is related to a cathode material comprising particles having a lithium metal phosphate core and a pyrolytic carbon deposit, said particles having a synthetic multimodal particle size distribution comprising at least one fraction of micron size particles and one fraction of submicron size particles, said lithium metal phosphate having formula LiMPO4 wherein M is at least Fe or Mn.Said material is prepared by method comprising the steps of providing starting micron sized particles and starting submicron sized particles of at least one lithium metal phosphate or of precursors of a lithium metal phosphate; mixing by mechanical means said starting particles; making a pyrolytic carbon deposit on the lithium metal phosphate starting particles before or after the mixing step, and on their metal precursor before or after mixing the particles; optionally adding carbon black, graphite powder or fibers to the said lithium metal phosphate particles before the mechanical mixing.

    摘要翻译： 本发明涉及包含具有锂金属磷酸盐芯和热解碳沉积物的颗粒的阴极材料，所述颗粒具有包含至少一部分微米级颗粒和一部分亚微米尺寸颗粒的合成多峰粒度分布，所述锂 具有式LiMPO 4的金属磷酸盐，其中M至少为Fe或Mn。 所述材料通过包括以下步骤的方法制备：包括提供起始微米尺寸的颗粒和开始至少一种锂金属磷酸盐或锂金属磷酸盐前体的亚微米尺寸的颗粒; 通过机械装置混合所述起始颗粒; 在混合步骤之前或之后在锂金属磷酸盐起始颗粒上制备热解碳沉积物，以及在混合颗粒之前或之后对其金属前体; 在机械混合之前，任选地将碳黑，石墨粉或纤维加入到所述锂金属磷酸盐颗粒中。

    Lithium iron phosphate cathode materials with enhanced energy density and power performance
    2.
    发明申请
    Lithium iron phosphate cathode materials with enhanced energy density and power performance 审中-公开
    磷酸铁锂正极材料具有增强的能量密度和功率性能

    公开(公告)号：US20090155689A1

    公开(公告)日：2009-06-18

    申请号：US12000625

    申请日：2007-12-14

    申请人： Karim Zaghib ,  Patrick Charest ,  Abdelbast Guerfi ,  Guoxian Liang

    发明人： Karim Zaghib ,  Patrick Charest ,  Abdelbast Guerfi ,  Guoxian Liang

    IPC分类号： H01M4/40 ,  H01M4/48 ,  C01B25/30

    CPC分类号： H01M4/5825 ,  H01M4/364 ,  H01M4/366 ,  H01M4/625 ,  H01M10/0525

    摘要： The invention is related to a cathode material comprising particles having a lithium metal phosphate core and a pyrolytic carbon deposit, said particles having a synthetic multimodal particle size distribution comprising at least one fraction of micron size particles and one fraction of submicron size particles, said lithium metal phosphate having formula LiMPO4 wherein M is at least Fe or Mn.Said material is prepared by method comprising the steps of providing starting micron sized particles and starting submicron sized particles of at least one lithium metal phosphate or of precursors of a lithium metal phosphate; mixing by mechanical means said starting particles; making a pyrolytic carbon deposit on the lithium metal phosphate starting particles before or after the mixing step, and on their metal precursor before or after mixing the particles; optionally adding carbon black, graphite powder or fibers to the said lithium metal phosphate particles before the mechanical mixing.

    摘要翻译： 本发明涉及包含具有锂金属磷酸盐芯和热解碳沉积物的颗粒的阴极材料，所述颗粒具有合成多峰粒度分布，其包含至少一部分微米级颗粒和一部分亚微米级颗粒，所述锂 具有式LiMPO 4的金属磷酸盐，其中M至少为Fe或Mn。 所述材料通过包括以下步骤的方法制备：包括提供起始微米尺寸的颗粒和开始至少一种锂金属磷酸盐或锂金属磷酸盐前体的亚微米尺寸的颗粒; 通过机械装置混合所述起始颗粒; 在混合步骤之前或之后在锂金属磷酸盐起始颗粒上制备热解碳沉积物，以及在混合颗粒之前或之后对其金属前体; 在机械混合之前，任选地将碳黑，石墨粉或纤维加入到所述锂金属磷酸盐颗粒中。