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公开(公告)号：US20220344655A1
公开(公告)日：2022-10-27
申请号：US17668475
申请日：2022-02-10
发明人： Arisa YAMADA , Tomoe KUSAMA , Tomoko SUGIZAKI , Yuta KANAI , Hirofumi YASUMIISHI , Tetsuya SASAKAWA , Yasuhiro HARADA
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/131 , H01M4/1391 , H01M4/134 , H01M4/1395 , H01M4/04
摘要： According to one embodiment, a method of producing a secondary battery is provided. The method includes preparing a battery architecture including a positive electrode, a negative electrode, and an electrolyte; adjusting a positive electrode potential to a range of 3.4 V to 3.9 V and a negative electrode potential to a range of 1.5 V to 2.0 V based on an oxidation-reduction potential of lithium, thereby providing a potential adjusted state; and holding the battery architecture in the potential adjusted state at a holding temperature of 50° C. to 90° C. The positive electrode includes a lithium-nickel-cobalt-manganese composite oxide. The negative electrode includes a niobium-titanium composite oxide. The electrolyte includes one or more first organic solvent having a viscosity of 1 cP or less.
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公开(公告)号：US20220302502A1
公开(公告)日：2022-09-22
申请号：US17462410
申请日：2021-08-31
IPC分类号： H01M10/0569 , H01M4/485 , H01M10/42 , H01M4/58
摘要： According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a separator layer, and a nonaqueous electrolytic solution. The separator layer includes a first porous layer containing a solid electrolyte and a second porous layer containing fibers. The second porous layer is in contact with a first surface of the first porous layer. The nonaqueous electrolytic solution includes a first solvent including at least one of methyl propionate and ethyl propionate, and a second solvent different from the first solvent. The first porous layer has a void fraction of 10% by volume or greater and 50% by volume or less. The second porous layer has a void fraction greater than the void fraction of the first porous layer.
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公开(公告)号：US20200044235A1
公开(公告)日：2020-02-06
申请号：US16523052
申请日：2019-07-26
发明人： Tetsuya SASAKAWA , Wen ZHANG , Yasuhiro HARADA , Norio TAKAMI
IPC分类号： H01M4/131 , H01M10/052
摘要： An electrode for a secondary battery comprises a current collector; and an active material-containing layer has active materials which comprise titanium-containing composite oxide having an orthorhombic crystal structure and represented by a general formula Li2+aM12−bTi6−cM2dO14+δ;wherein the active material-containing layer has intensity ratio Ia/Ib in an X-ray diffraction pattern of the active material-containing layer, the Ia and the Ib are obtained by powder X-ray diffraction method using Cu-Kα ray, the intensity ratio is within a range of 0.5≤Ia/Ib≤2, the Ia is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 42°≤2θ≤44°, and the Ib is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 44°
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公开(公告)号：US20190296337A1
公开(公告)日：2019-09-26
申请号：US16122283
申请日：2018-09-05
摘要： According to one embodiment, an electrode including an active material-containing layer and a film is provided. The active material-containing layer contains an active material containing a titanium-containing oxide. The film is present on at least a part of a surface of the active material-containing layer. The film contains fluorine, an organic atom, and a metal ion. The fluorine includes fluorine bonded to the organic atom and fluorine bonded to the metal ion. The film satisfies a relationship of following formula (1), where F1 is a proportion of the fluorine bonded to the organic atom, and F2 is a proportion of the fluorine bonded to the metal ion: 0.1≤F2/F1≤0.6 (1).
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公开(公告)号：US20180277904A1
公开(公告)日：2018-09-27
申请号：US15691879
申请日：2017-08-31
IPC分类号： H01M10/42 , H01M2/10 , H01M10/0585
CPC分类号： H01M10/4257 , H01M2/021 , H01M2/1077 , H01M2/24 , H01M10/0413 , H01M10/0463 , H01M10/052 , H01M10/0585 , H01M2010/4271 , H01M2220/20
摘要： In one embodiment, a secondary battery includes, electrode groups, an insulating sheet, and a container member. The insulating sheet is disposed between the electrode groups. At least part of the insulating sheet is joined to the container member. The container member covers the outside of a stack having the electrode groups and the insulating sheet.
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6.发明申请POSITIVE ELECTRODE ACTIVE MATERIAL, NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK 审中-公开正极电极活性材料，非水电解电池和电池组公开(公告)号：US20160190569A1
公开(公告)日：2016-06-30
申请号：US15063792
申请日：2016-03-08
发明人： Tetsuya SASAKAWA , Norio TAKAMI
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/58
CPC分类号： H01M4/366 , H01M4/136 , H01M4/5825 , H01M10/0525
摘要： According to one embodiment, a positive electrode active material includes particles and a coating layer. The particles includes a first compound represented by the general formula LiMSO4F wherein M is at least one element selected from the group consisting of Fe, Mn, and Zn. The coating layer coats at least one part of surfaces of the particles. The coating layer includes a second compound represented by the general formula LiM′PO4 wherein M′ is at least one element selected from the group consisting of Fe, Mn, Co, and Mg.
摘要翻译： 根据一个实施方案，正极活性材料包括颗粒和涂层。 颗粒包括由通式LiMSO4F表示的第一化合物，其中M是选自Fe，Mn和Zn中的至少一种元素。 涂层涂覆颗粒表面的至少一部分。 涂层包括由通式LiM'PO4表示的第二化合物，其中M'是选自Fe，Mn，Co和Mg中的至少一种元素。
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公开(公告)号：US20240088345A1
公开(公告)日：2024-03-14
申请号：US18172292
申请日：2023-02-21
CPC分类号： H01M4/0435 , H01M10/0404
摘要： In a manufacturing method of an electrode structure of an embodiment, in a belt-like member in which an uncoated region not coated with an active material-containing layer is formed in one of a pair of long edges and its vicinity in a current collector, the active material-containing layer is rolled, and a tension in a longitudinal direction is applied to the belt-like member between a pulling unit pulling the belt-like member and a rolling unit rolling the active material-containing layer. In the method, between the rolling unit and the pulling unit, a pair of holding members are brought into contact with the uncoated region from opposite sides in a thickness direction of the belt-like member to which the tension is applied, thereby holding the uncoated region between the holding members.
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公开(公告)号：US20220293915A1
公开(公告)日：2022-09-15
申请号：US17462507
申请日：2021-08-31
摘要： According to an embodiment, an electrode group is provided. The electrode group includes a positive electrode, and a negative electrode. The negative electrode active material-containing layer includes a facing section which faces the positive electrode active material-containing layer and a non-facing section which does not. A first fluorine-containing coating is formed on a main surface of the negative electrode active material-containing layer in at least a part of the non-facing section. The abundance ratio of fluorine atoms included in the first fluorine-containing coating is in the range of 2.5 atom % to 10 atom %.
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公开(公告)号：US20220085456A1
公开(公告)日：2022-03-17
申请号：US17179480
申请日：2021-02-19
IPC分类号： H01M50/46 , H01M10/0565 , H01M10/42 , H01M4/485 , H01M4/62 , H01M10/0525
摘要： According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode, a negative electrode, and a gel polymer layer interposed between the positive electrode and the negative electrode. At least a part of the negative electrode is opposed to the positive electrode. The gel polymer layer is formed of a gel electrolyte composed of a polymer material, an organic solvent and a lithium salt, and a sheet base member which supports the gel electrolyte, or the gel polymer layer is formed of only the gel electrolyte.
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公开(公告)号：US20210083297A1
公开(公告)日：2021-03-18
申请号：US16804546
申请日：2020-02-28
发明人： Yuta KANAI , Tetsuya SASAKAWA , Keigo HOSHINA , Yasuhiro HARADA , Norio TAKAMI
摘要： According to one embodiment, an electrode is provided. The electrode includes the active material-containing layer formed on the current collector and including active material particles. The particle size distribution chart obtained by the laser diffraction scattering method for the active material particles includes the first region and the second region. The first particle group included in the first region includes the first active material particles, and the second particle group included in the second region includes second active material particles. The carbon coverage of the first particle group is higher than the carbon coverage of the second particle group.
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