公开(公告)号：US09944537B2

公开(公告)日：2018-04-17

申请号：US14526577

申请日：2014-10-29

Applicant: NICHIA CORPORATION

Inventor： Kosuke Shimokita ,  Makoto Shimahara ,  Kiyofumi Inouchi

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

Abstract: The present invention provides a positive electrode composition for a non-aqueous electrolyte secondary battery, wherein the composition includes a lithium-transition metal composite oxide represented by the following compositional formula: LiaNi1-x-yCoxM1yM2zMoαNbβO2 wherein 1.00≤a≤1.50, 0.00≤x≤0.50, 0.00≤y≤0.50, 0.000≤z≤0.020, 0.002≤α≤0.020, 0.002≤β≤0.020, and 0.00≤x+y≤0.70, M1 represents at least one element selected from the group consisting of Mn and Al, and M2 represents at least one element selected from the group consisting of Zr, Ti, Mg, Ta, and V, and a boron compound including at least boron and oxygen.

公开(公告)号：US11837723B2

公开(公告)日：2023-12-05

申请号：US16795539

申请日：2020-02-19

Applicant: NICHIA CORPORATION

Inventor： Kumi Yoshihara ,  Kosuke Shimokita ,  Kiyoto Ikebata ,  Takashi Sugimoto

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/02 ,  C01G53/00

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/40 ,  H01M2004/028 ,  Y02E60/10

Abstract: Provided is a positive-electrode active material for a nonaqueous electrolyte secondary battery, including a lithium transition metal composite oxide particle having a layered structure and containing nickel, and an oxide containing lithium and aluminum and an oxide containing lithium and boron adhering to a surface of the lithium transition metal composite oxide particle. The lithium transition metal composite oxide particle includes a secondary particle formed by aggregation of primary particles containing a solid solution of aluminum in a surface layer. The lithium transition metal composite oxide particles have a composition with a difference of more than 0.22 mol % and less than 0.6 mol % between a ratio of the number of moles of aluminum in the solid solution in the surface layer of the primary particles relative to a total number of moles of metal other than lithium and a ratio of the number of moles of aluminum present in a region other than the surface layer of the primary particles relative to the total number of moles of metal other than lithium.

公开(公告)号：US09981859B2

公开(公告)日：2018-05-29

申请号：US14526577

申请日：2014-10-29

Applicant: NICHIA CORPORATION

Inventor： Kosuke Shimokita ,  Makoto Shimahara ,  Kiyofumi Inouchi

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

CPC classification number: C01G53/50 ,  C01P2002/50 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122

Abstract: The present invention provides a positive electrode composition for a non-aqueous electrolyte secondary battery, wherein the composition includes a lithium-transition metal composite oxide represented by the following compositional formula: LiaNi1-x-yCoxM1yM2zMoαNbβO2 wherein 1.00≤a≤1.50, 0.00≤x≤0.50, 0.00≤y≤0.50, 0.000≤z≤0.020, 0.002≤α≤0.020, 0.002≤β≤0.020, and 0.00≤x+y≤0.70, M1 represents at least one element selected from the group consisting of Mn and Al, and M2 represents at least one element selected from the group consisting of Zr, Ti, Mg, Ta, and V, and a boron compound including at least boron and oxygen.