公开(公告)号：US20220416293A1

公开(公告)日：2022-12-29

申请号：US17777880

申请日：2020-11-05

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke YOSHIKAWA

IPC: H01M10/0562 ,  H01M10/0525

Abstract: One aspect of the present invention is a solid electrolyte which has a crystal structure attributable to a space group F-43m and contains lithium, phosphorus, sulfur, and an element A, in which the element A is a metal element having an ionic radius of more than 59 pm and 120 pm or less in 4-fold coordination and 6-fold coordination in an ion crystal.

公开(公告)号：US20220293932A1

公开(公告)日：2022-09-15

申请号：US17636268

申请日：2020-07-03

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke YOSHIKAWA ,  Shinya OTANI

IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00

Abstract: Provided is a positive active material for a nonaqueous electrolyte secondary battery which contains a lithium transition metal composite oxide, the lithium transition metal composite oxide having an α-NaFeO2 structure, containing Ni, Co and Mn as a transition metal (Me), and having an X-ray diffraction pattern attributable to a space group R3-m, in which a ratio of the full width at half maximum of a diffraction peak of the (003) plane to the full width at half maximum of a diffraction peak of the (104) plane, (003)/(104) at a Miller index hkl in X-ray diffraction measurement using a CuKα ray is 0.810 to 0.865, and a crystallite size is 410 Å or more.

公开(公告)号：US20240097129A1

公开(公告)日：2024-03-21

申请号：US18274402

申请日：2022-01-24

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke YOSHIKAWA ,  Motoshi SUYAMA

IPC: H01M4/58 ,  C01B25/45 ,  H01G11/30 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01G11/30 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  C01P2006/40

Abstract: An active material particle according to an aspect of the present invention includes an active material base material and a covering layer covering at least a part of a surface of the active material base material, in which the covering layer contains niobium atoms and phosphorus atoms, and a content of the phosphorus atoms with respect to a total content of the niobium atoms and the phosphorus atoms in the covering layer is more than 0 mol % and 80 mol % or less.

公开(公告)号：US20240088357A1

公开(公告)日：2024-03-14

申请号：US18274394

申请日：2022-01-24

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke YOSHIKAWA ,  Motoshi SUYAMA

IPC: H01M4/36 ,  C01G23/00 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/366 ,  C01G23/005 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028

Abstract: An active material particle according to an aspect of the present invention contains an active material base material and a covering layer covering at least a part of a surface of the active material base material, the covering layer contains an oxide containing lithium atoms and titanium atoms, and a molar ratio of a content of the lithium atoms to the titanium atoms in the oxide is more than 1 and 4 or less.

公开(公告)号：US20160301073A1

公开(公告)日：2016-10-13

申请号：US15100479

申请日：2014-11-17

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke YOSHIKAWA ,  Daisuke ENDO

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

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/74 ,  C01P2004/32 ,  C01P2006/11 ,  C01P2006/14 ,  C01P2006/16 ,  H01B1/08 ,  H01M4/131 ,  H01M4/505 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

Abstract: Provided is a positive active material for a lithium secondary battery containing a lithium transition metal composite oxide. The lithium transition metal composite oxide has an α-NaFeO2 structure. A transition metal (Me) includes Co, Ni and Mn and a molar ratio Li/Me of lithium (Li) to the transition metal is larger than 1.2 and smaller than 1.6. The lithium transition metal composite oxide has a pore volume of 0.055 to 0.08 cc/g in a pore region in which a pore size, at which a differential pore volume determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method exhibits a maximum value, is within a range up to 60 nm, and exhibits a single phase belonging to a space group R3-m at 1000° C.

Abstract translation: 提供了含有锂过渡金属复合氧化物的锂二次电池的正极活性物质。 锂过渡金属复合氧化物具有α-NaFeO 2结构。 过渡金属（Me）包括Co，Ni和Mn，锂（Li）与过渡金属的Li / Me摩尔比大于1.2且小于1.6。 锂过渡金属复合氧化物在通过使用氮气吸附法的吸附等温线由BJH法测定的微孔容积的孔径在孔区域中的孔体积为0.055〜0.08cc / g， 最大值在高达60nm的范围内，并且在1000℃下表现出属于空间群R3-m的单相。