公开(公告)号：US09219275B2

公开(公告)日：2015-12-22

申请号：US14375349

申请日：2012-12-05

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Endo

IPC: H01M4/131 ,  H01M4/50 ,  H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M4/52 ,  H01M10/0525 ,  H01B3/10 ,  H01M10/052

CPC classification number: H01M4/131 ,  C01G53/50 ,  C01P2002/22 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/40 ,  H01M4/502 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: An active material for a nonaqueous electrolyte secondary battery includes a lithium transition metal composite oxide which has an α-NaFeO2-type crystal structure, is represented by the compositional formula Li1+αMe1−αO2 (Me is a transition metal element containing Mn, Ni and Co; and 0

Abstract translation: 非水电解质二次电池用活性物质包括具有α-NaFeO 2型晶体结构的锂过渡金属复合氧化物，由组成式Li1 +αMe1-αO2表示（Me是含有Mn，Ni的过渡金属元素和 Co和0 <α<1），满足1.250＆nlE;（1 +α）/（1-α）＆nlE; 1.425的要求。 2θ时的衍射峰的半峰宽= 18.6°±1°为0.20°至0.27°，和/或2θ处的衍射峰的半峰宽= 44.1°±1°为0.26°至0.39° 使用CuKα辐射的X射线衍射测量。 当电化学氧化成5.0V（相对于Li / Li +）的电位时，锂过渡金属复合氧化物作为X射线衍射图上的六方晶（空间群R3-m）的单相被观察。

公开(公告)号：US09105924B2

公开(公告)日：2015-08-11

申请号：US13914907

申请日：2013-06-11

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo ,  Hiromasa Muramatsu

IPC: H01M4/505 ,  H01M4/48 ,  H01M4/525 ,  C01G53/00 ,  H01M10/052

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。

公开(公告)号：US20140306151A1

公开(公告)日：2014-10-16

申请号：US14360181

申请日：2012-12-05

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Endo

IPC: H01M4/485 ,  H01M4/505 ,  C01D15/02 ,  H01M4/525

CPC classification number: H01M4/485 ,  C01D15/02 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/14 ,  C01P2006/16 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: Provided is an active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide which has a crystal structure of an α-NaFeO2 type and is represented by a compositional formula Li1+αMe1−αO2 (Me is a transition metal element including Co, Ni and Mn, α>0). In the lithium transition metal composite oxide, a compositional ratio Li/Me of lithium Li to the transition metal element Me is 1.25 to 1.425, and an oxygen positional parameter, determined from crystal structure analysis by Rietveld method at the time of using a space group R3-m as a crystal structure model based on an X-ray diffraction pattern in a state of a discharge end, is 0.262 or less.

Abstract translation: 本发明提供一种含有具有α-NaFeO 2型晶体结构并由组成式Li1 +αMe1-αO2表示的锂过渡金属复合氧化物的非水电解质二次电池用活性物质（Me是包含Co的过渡金属元素 ，Ni和Mn，α> 0）。 在锂过渡金属复合氧化物中，锂Li与过渡金属元素Me的组成比Li / Me为1.25〜1.425，氧位置参数由使用空间群时的Rietveld方法的晶体结构分析确定 作为在放电端的状态下的X射线衍射图案的晶体结构模型的R3-m为0.262以下。

公开(公告)号：US20140011091A1

公开(公告)日：2014-01-09

申请号：US13932457

申请日：2013-07-01

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo

IPC: H01M4/505 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/583

CPC classification number: H01M10/0525 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/44 ,  H01M10/446 ,  Y02E60/122

Abstract: Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode has a positive active material containing a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula: Li1+αMe1−αO2 (wherein Me is a transition metal element including Co, Ni and Mn; and α>0), and the negative electrode has a negative active material which contains a carbon material that is a mixture of graphite and amorphous carbon and in which the ratio of the amorphous carbon contained in the carbon material is 5 to 60% by mass.

Abstract translation: 提供一种非水电解质二次电池，其包括正极，负极和非水电解质，其中所述正极具有含有具有α-NaFeO 2型晶体结构的锂过渡金属复合氧化物的正极活性物质，并由所述组合物 式：Li1 +αMe1-αO2（其中Me是包括Co，Ni和Mn的过渡金属元素;和α> 0），负极具有负极活性物质，其含有作为石墨和非晶体的混合物的碳材料 碳，其中碳材料中所含的无定形碳的比例为5〜60质量％。

公开(公告)号：US20140004423A1

公开(公告)日：2014-01-02

申请号：US13915025

申请日：2013-06-11

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Endo ,  Hiromasa Muramatsu

IPC: H01M4/36 ,  C01D15/02

CPC classification number: H01M4/364 ,  C01D15/02 ,  C01G53/006 ,  C01G53/50 ,  C01P2004/61 ,  C01P2006/80 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2220/20 ,  Y02E60/122

Abstract: The 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 no less than 1900 ppm and no more than 8000 ppm, and has a 50% particle size (D50) of 5 μm or less in particle size distribution measurement.

Abstract translation: 用于锂二次电池的正极活性材料包括具有α-NaFeO 2型晶体结构并由组成式Li1 +αMe1-αO2表示的锂过渡金属复合氧化物（Me是包括Co，Ni和Mn的过渡金属和 α> 0）。 正极活性物质的粒径分布测定中含有不低于1900ppm且不超过8000ppm的Na，并且具有5μm以下的50％的粒径（D50）。

公开(公告)号：US11152616B2

公开(公告)日：2021-10-19

申请号：US16317348

申请日：2017-07-05

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Endo ,  Hiromasa Muramatsu

IPC: H01B1/08 ,  H01M4/50 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: To provide a hydroxide precursor having a high density, a method for producing a lithium transition metal composite oxide using the precursor, a positive active material having a large discharge capacity per unit volume, which uses the composite oxide, an electrode for nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery. A method for producing a transition metal hydroxide precursor for use in production of a lithium transition metal composite oxide, including adding a solution containing a transition metal (Me) into a reaction tank in which a water solvent of dissolution of a complexing agent and a reducing agent has been charged in advance to coprecipitate a transition metal hydroxide that includes Mn and Ni, or Mn, Ni and Co, and has a mole ratio Mn/Me of larger than 0.5 and a mole ratio Co/Me of 0.15 or less. Further, a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure, in which a mole ratio Li/Me is larger than 1, the mole ratios of Mn and Co are as described above, and which has an X-ray diffraction pattern attributable to R3-m, a ratio (FWHM (003)/FWHM (114)) of a full width at half maximum of a diffraction peak of a (003) plane to a full width at half maximum of a diffraction peak of a (104) plane of 0.72 or less, and a peak differential pore volume of 0.50 mm3/(g·nm) or less as determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method.

公开(公告)号：US10044036B2

公开(公告)日：2018-08-07

申请号：US15100479

申请日：2014-11-17

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Yoshikawa ,  Daisuke Endo

IPC: H01B1/08 ,  H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M4/131 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/02

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.

公开(公告)号：US20170117544A1

公开(公告)日：2017-04-27

申请号：US15362103

申请日：2016-11-28

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo ,  Yoshihiro Katayama ,  Tetsuya Murai ,  Masafumi Shibata

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

CPC classification number: H01M4/505 ,  C01G45/1221 ,  C01G45/1228 ,  C01G51/44 ,  C01G51/50 ,  C01G53/44 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/77 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01B1/08 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: An object of the present invention is to provide a positive active material for a nonaqueous electrolyte secondary battery which has a large discharge capacity and is superior in charge-discharge cycle performance, initial efficiency and high rate discharge performance, and a nonaqueous electrolyte secondary battery using the positive active material. The present invention pertains to a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide which has a crystal structure of an α-NaFeO2 type, is represented by a compositional formula Li1+αMe1−αO2 (Me is a transition metal element including Co, Ni and Mn, α>0), and has a molar ratio Li/Me of Li to the transition metal element Me of 1.2 to 1.6, wherein a molar ratio Co/Me of Co in the transition metal element Me is 0.02 to 0.23, a molar ratio Mn/Me of Mn in the transition metal element Me is 0.62 to 0.72, and the lithium transition metal composite oxide is observed as a single phase attributed to a space group R3-m on an X-ray diffraction chart when it is electrochemically oxidized up to a potential of 5.0 V (vs. Li/Li+).

公开(公告)号：US20170062872A1

公开(公告)日：2017-03-02

申请号：US15348484

申请日：2016-11-10

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo

IPC: H01M10/0525 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M10/44 ,  H01M4/505 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66 ,  H01M4/04 ,  H01M4/131 ,  H01M4/525

CPC classification number: H01M10/0525 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/44 ,  H01M10/446 ,  Y02E60/122

Abstract: Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode has a positive active material containing a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula: Li1+αMe1−αO2 (wherein Me is a transition metal element including Co, Ni and Mn; and α>0), and the negative electrode has a negative active material which contains a carbon material that is a mixture of graphite and amorphous carbon and in which the ratio of the amorphous carbon contained in the carbon material is 5 to 60% by mass.

Abstract translation: 本发明提供一种具有正极，负极和非水电解质的非水电解质二次电池，其中，所述正极具有含有具有α-NaFeO 2型晶体结构的锂过渡金属复合氧化物的正极活性物质，并由所述组合物 式：Li1 +αMe1-αO2（其中Me是包括Co，Ni和Mn的过渡金属元素，α> 0），负极具有含有作为石墨和非晶体的混合物的碳材料的负极活性物质 碳，其中碳材料中所含的无定形碳的比例为5〜60质量％。

公开(公告)号：US09525172B2

公开(公告)日：2016-12-20

申请号：US13932457

申请日：2013-07-01

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/44 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36

CPC classification number: H01M10/0525 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/44 ,  H01M10/446 ,  Y02E60/122

Abstract: Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode has a positive active material containing a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula: Li1+αMe1−αO2 (wherein Me is a transition metal element including Co, Ni and Mn; and α>0), and the negative electrode has a negative active material which contains a carbon material that is a mixture of graphite and amorphous carbon and in which the ratio of the amorphous carbon contained in the carbon material is 5 to 60% by mass.

Abstract translation: 本发明提供一种具有正极，负极和非水电解质的非水电解质二次电池，其中，所述正极具有含有具有α-NaFeO 2型晶体结构的锂过渡金属复合氧化物的正极活性物质，并由所述组合物 式：Li1 +αMe1-αO2（其中Me是包括Co，Ni和Mn的过渡金属元素，α> 0），负极具有含有作为石墨和非晶体的混合物的碳材料的负极活性物质 碳，其中碳材料中所含的无定形碳的比例为5〜60质量％。