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公开(公告)号：US10673070B2
公开(公告)日：2020-06-02
申请号：US15576079
申请日：2016-05-27
Applicant: GS Yuasa International Ltd.
Inventor： Daisuke Endo , Hiromasa Muramatsu
IPC: H01M6/18 , H01M4/505 , H01M4/525 , H01M10/052 , H01M4/02
Abstract: Provided is a positive active material for a nonaqueous electrolyte secondary battery which includes a lithium transition metal composite oxide. A molar ratio (Li/Me) of Li and a transition metal (Me) that form the lithium transition metal composite oxide is more than 1. The transition metal (Me) includes Mn, Ni and Co. The lithium transition metal composite oxide has an α-NaFeO2-type crystal structure, an X-ray diffraction pattern attributable to a space group R3-m, and a full width at half maximum (FWHM (104)) for the diffraction peak of the (104) plane at a Miller index hkl in X-ray diffraction measurement using a CuKα ray of 0.21° or more and 0.55° or less. A ratio (FWHM (003)/FWHM (104)) of a full width at half maximum for the diffraction peak of the (003) plane and the full width at half maximum for the diffraction peak of the (104) plane at the Miller index hkl is 0.72 or less. Particles of the lithium transition metal composite oxide have a peak differential pore volume of 0.33 mm3/(g·nm) or less.
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公开(公告)号：US09478795B2
公开(公告)日：2016-10-25
申请号：US14790792
申请日：2015-07-02
Applicant: GS YUASA INTERNATIONAL LTD.
Inventor： Daisuke Endo , Hiromasa Muramatsu
CPC classification number: H01M4/131 , C01G53/006 , C01G53/50 , C01P2002/20 , C01P2002/76 , C01P2004/51 , C01P2004/61 , C01P2006/40 , H01M4/48 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2004/028 , H01M2220/20 , Y02E60/122 , Y02P70/54 , Y02T10/7011
Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula of Li1+αMe1−αO2 (Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.
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13.发明申请公开(公告)号：US20150311499A1
公开(公告)日：2015-10-29
申请号：US14790792
申请日：2015-07-02
Applicant: GS YUASA INTERNATIONAL LTD.
Inventor： Daisuke Endo , Hiromasa Muramatsu
CPC classification number: H01M4/131 , C01G53/006 , C01G53/50 , C01P2002/20 , C01P2002/76 , C01P2004/51 , C01P2004/61 , C01P2006/40 , H01M4/48 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2004/028 , H01M2220/20 , Y02E60/122 , Y02P70/54 , Y02T10/7011
Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula of Li1+αMe1−αO2 (Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.
Abstract translation: 本发明提供一种锂二次电池用正极活性物质，其具有由Li-1 +αMe1-αO2组成式表示的具有α-NaFeO 2型晶体结构的锂过渡金属复合氧化物（Me是包括Co，Ni的过渡金属和 Mn和α> 0）。 正极活性物质含有900ppm以上且16000ppm以下的Na，或1200ppm以上至18000ppm以下的K。
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Patent Agency Ranking
公开(公告)号：US20230155117A1
公开(公告)日：2023-05-18
申请号：US17916944
申请日：2021-03-23
Applicant: GS Yuasa International Ltd.
Inventor： Hiromasa Muramatsu , Heisuke Nishikawa
CPC classification number: H01M4/382 , H01M4/661 , H01M2004/027
Abstract: One aspect of the present invention is a nonaqueous electrolyte energy storage device including: a negative electrode containing a lithium alloy containing gold, and lithium metal; a positive electrode; and a nonaqueous electrolyte, in which the negative electrode includes a negative electrode substrate including a metal foil and a coating layer coating the negative electrode substrate, the metal foil contains copper, nickel, or stainless steel as a main component, and the coating layer contains gold as a main component.
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公开(公告)号：US20230078256A1
公开(公告)日：2023-03-16
申请号：US17984687
申请日：2022-11-10
Applicant: GS Yuasa International Ltd.
Inventor： Daisuke Endo , Hiromasa Muramatsu
IPC: H01M4/525 , H01M4/04 , H01M4/505 , C01G53/00 , H01M10/0525
Abstract: Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide, in which the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li and a transition metal (Me) of 1.05≤Li/Me≤1.4, and a porosity of 5 to 15%.
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公开(公告)号：US11545662B2
公开(公告)日：2023-01-03
申请号：US16771281
申请日：2018-12-14
Applicant: GS Yuasa International Ltd.
Inventor： Daisuke Endo , Hiromasa Muramatsu
Abstract: Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide, in which the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li and a transition metal (Me) of 1.05≤Li/Me≤1.4, and a porosity of 5 to 15%.
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公开(公告)号：US11251427B2
公开(公告)日：2022-02-15
申请号：US16771499
申请日：2018-12-14
Applicant: GS Yuasa International Ltd.
Inventor： Hiromasa Muramatsu
Abstract: Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide, in which the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li and a transition metal (Me) is 1
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公开(公告)号：US09601752B2
公开(公告)日：2017-03-21
申请号：US15172762
申请日：2016-06-03
Applicant: GS Yuasa International Ltd.
Inventor： Daisuke Endo , Hiromasa Muramatsu
IPC: H01M4/00 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/48 , C01G53/00 , H01M10/0525 , H01M10/052 , H01M4/02
CPC classification number: H01M4/131 , C01G53/006 , C01G53/50 , C01P2002/20 , C01P2002/76 , C01P2004/51 , C01P2004/61 , C01P2006/40 , H01M4/48 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2004/028 , H01M2220/20 , Y02E60/122 , Y02P70/54 , Y02T10/7011
Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula of Li1+αMe1−αO2 (Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.
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