公开(公告)号：US20150118564A1

公开(公告)日：2015-04-30

申请号：US14526577

申请日：2014-10-29

Applicant: NICHIA CORPORATION

Inventor： Kosuke SHIMOKITA ,  Makoto SHIMAHARA ,  Kiyofumi INOUCHI

IPC: H01M4/50 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/52

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.

Abstract translation: 本发明提供一种非水电解质二次电池用正极组合物，其特征在于，所述组合物包含由以下组成式表示的锂过渡金属复合氧化物：LiaNi1-x-yCoxM1yM2zMoαNb＆bgr; O2，其中1.00＆nlE; a＆nlE; 1.50， 0.00＆nlE; x＆nlE; 0.50,0.00＆nlE; y＆nlE; 0.50,0.000＆amp; nlE; z＆nlE; 0.020,0.002＆lt; nlE;α＆nlE; 0.020,0.002＆lt; nlE;＆bgr;＆nlE; 0.020和0.00＆ 选自Mn和Al中的至少一种元素，M2表示选自Zr，Ti，Mg，Ta和V中的至少一种元素，以及至少包括硼和氧的硼化合物。

公开(公告)号：US20240072253A1

公开(公告)日：2024-02-29

申请号：US18495121

申请日：2023-10-26

Applicant: NICHIA CORPORATION

Inventor： Kumi YOSHIHARA ,  Kosuke SHIMOKITA ,  Kiyoto IKEBATA ,  Takashi SUGIMOTO

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

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

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：US20200266441A1

公开(公告)日：2020-08-20

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 ,  H01M10/0525 ,  H01M4/505

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：US20150180026A1

公开(公告)日：2015-06-25

申请号：US14581378

申请日：2014-12-23

Applicant: Nichia Corporation

Inventor： Kosuke SHIMOKITA

IPC: H01M4/36 ,  H01M4/1391 ,  H01M10/05 ,  H01M4/525 ,  H01M4/04

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/628

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, the positive electrode active material including: core particles containing a lithium-transition metal composite oxide represented by the formula: LiaNi1-x-yCoxM1yM2zO2, wherein a, x, y, and z satisfy the respective relationships: 1.00≦a≦1.50, 0.00≦x≦0.50, 0.00≦y≦0.50, 0.00≦z≦0.02, 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, W, Ti, Mg, Ta, Nb, and Mo; and a coating layer formed over at least a portion of the surface of the core particles, the coating layer contains magnesium, phosphorus, and oxygen, wherein the coating layer is obtained by individually supplying a first solution containing a magnesium salt of an organic acid and a second solution containing phosphorus and oxygen to the surface of the core particles and subjecting the resultant particles to heat treatment.

Abstract translation: 1.一种非水电解质二次电池用正极活性物质，所述正极活性物质包含：含有下式所示的锂 - 过渡金属复合氧化物的核粒子：LiaNi1-x-yCoxM1yM2zO2，其中a，x，y和 z满足各自的关系：1.00＆nlE; a＆nlE; 1.50，0.00＆nlE; x＆nlE; 0.50,0.00＆nlE; y＆nlE; 0.50,0.00＆nlE; z＆nlE; 0.02和0.00＆lt; nEE; x + y＆nlE; 0.70，M1表示至少一个元素 选自由Mn和Al组成的组，M2表示选自Zr，W，Ti，Mg，Ta，Nb和Mo中的至少一种元素; 以及在所述芯粒子表面的至少一部分上形成的被覆层，所述被覆层含有镁，磷，氧，其中，所述被覆层是通过分别供给含有有机酸的镁盐的第一溶液和 将含有磷和氧的第二溶液加到芯颗粒的表面，并对所得颗粒进行热处理。