公开(公告)号：US09911970B2

公开(公告)日：2018-03-06

申请号：US14899779

申请日：2014-06-26

Applicant: Dow Global Technologies LLC

Inventor： Murali G. Theivanayagam ,  Ing-Feng Hu ,  Hideaki Maeda ,  Jui-Ching Lin

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  Y02T10/7011

Abstract: An improved method of making a cathode for use in a lithium ion battery is comprised of mixing a lithium metal oxide and lithium metal phosphate in a solvent, where both of these are comprised of primary particles that have been agglomerated into secondary particles of particular size and mixing is insufficient to break up the particles of the lithium metal phosphate, coating the mixture of step (A) on to a metal foil and removing the solvent to form the cathode. The lithium metal oxide is also desirably not broken either. The cathode may be one that has lithium metal oxide and a particular lithium metal phosphate wherein the majority of the metal is Mn.

公开(公告)号：US11205776B2

公开(公告)日：2021-12-21

申请号：US15311863

申请日：2015-05-14

Applicant: Dow Global Technologies LLC

Inventor： Yu-Hua Kao ,  Murali G. Theivanayagam ,  Jui-Ching Lin ,  Jianxin Ma ,  Liang Chen ,  Michael Lowe ,  Hideaki Maeda ,  Ing-Feng Hu

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  C01G53/00 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/02

Abstract: A method for forming lithium metal oxides comprised of Ni, Mn and Co useful for making lithium ion batteries comprises providing precursor particulates of Ni and Co that are of a particular size that allows the formation of improved lithium metal oxides. The method allows the formation of lithium metal oxides having improved safety while retaining good capacity and rate capability. In particular, the method allows for the formation of lithium metal oxide where the primary particle surface Mn/Ni ratio is greater than the bulk Mn/Ni. Likewise the method allows the formation of lithium metal oxides with secondary particles having much higher densities allowing for higher cathode densities and battery capacities while retaining good capacity and rate performance.

公开(公告)号：US20170084919A1

公开(公告)日：2017-03-23

申请号：US15311863

申请日：2015-05-14

Applicant: Dow Global Technologies LLC

Inventor： Yu-Hua Kao ,  Murali G. Theivanayagam ,  Jui-Ching Lin ,  Jianxin Ma ,  Liang Chen ,  Michael Lowe ,  Hideaki Maeda ,  Ing-Feng Hu

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/505

CPC classification number: H01M4/525 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/362 ,  H01M4/364 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A method for forming lithium metal oxides comprised of Ni, Mn and Co useful for making lithium ion batteries comprises providing precursor particulates of Ni and Co that are of a particular size that allows the formation of improved lithium metal oxides. The method allows the formation of lithium metal oxides having improved safety while retaining good capacity and rate capability. In particular, the method allows for the formation of lithium metal oxide where the primary particle surface Mn/Ni ratio is greater than the bulk Mn/Ni. Likewise the method allows the formation of lithium metal oxides with secondary particles having much higher densities allowing for higher cathode densities and battery capacities while retaining good capacity and rate performance.

公开(公告)号：US20160149205A1

公开(公告)日：2016-05-26

申请号：US14899779

申请日：2014-06-26

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Murali G. Theivanayagam ,  Ing-Feng Hu ,  Hideaki Maeda ,  Jui-Ching Lin

IPC: H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/136 ,  H01M4/58

CPC classification number: H01M4/131 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  Y02T10/7011

Abstract: An improved method of making a cathode for use in a lithium ion battery is comprised of mixing a lithium metal oxide and lithium metal phosphate in a solvent, where both of these are comprised of primary particles that have been agglomerated into secondary particles of particular size and mixing is insufficient to break up the particles of the lithium metal phosphate, coating the mixture of step (A) on to a metal foil and removing the solvent to form the cathode. The lithium metal oxide is also desirably not broken either. The cathode may be one that has lithium metal oxide and a particular lithium metal phosphate wherein the majority of the metal is Mn.

Abstract translation: 制造用于锂离子电池的阴极的改进方法包括在溶剂中混合锂金属氧化物和锂金属磷酸盐，其中两者都由已经凝聚成特定尺寸的二次粒子的一次粒子组成， 混合不足以破坏锂金属磷酸盐的颗粒，将步骤（A）的混合物涂覆到金属箔上并除去溶剂以形成阴极。 也希望锂金属氧化物也不破坏。 阴极可以是具有锂金属氧化物和特定的锂金属磷酸盐的阴极，其中大部分金属是Mn。

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。