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公开(公告)号：US12206088B2
公开(公告)日：2025-01-21
申请号：US17296312
申请日：2019-10-31
Inventor： Kouhei Tsuzuki , Akihiko Takada , Yuki Morikawa , Hirokazu Wada , Katsunori Yanagida
Abstract: A negative electrode for a nonaqueous electrolyte secondary battery, said negative electrode comprising a negative-electrode current collector, and a negative-electrode active material layer provided upon the negative-electrode current collector, wherein the negative-electrode active material layer includes a negative-electrode active material and a styrene-butadiene rubber, and the glass transition temperature (Tg) of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the reverse side of the negative-electrode active material layer from the negative-electrode current collector is higher than that of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the negative-electrode current collector side of the negative-electrode active material layer.
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公开(公告)号：US20220102808A1
公开(公告)日：2022-03-31
申请号：US17430155
申请日：2020-01-27
Inventor： Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M50/431 , H01M50/443 , H01M50/426
Abstract: A separator for use in a non-aqueous electrolyte secondary battery according to the present invention comprises a porous substrate and a filler layer disposed upon the substrate. The filler layer includes phosphate particles and inorganic particles having a higher heat resistance than the phosphate particles. The D10 particle size (D10) of the phosphate particles on a volume basis is 0.02 μm to 0.5 μm, inclusive, and is smaller than the average pore size of the pores in the substrate. The BET specific surface area of the phosphate particles is 5 m2/g to 100 m2/g, inclusive, and is greater than the BET specific surface area of the inorganic particles. The D50 particle size (D50) of the inorganic particles on a volume basis is greater than the D50 particle size (D50) of the phosphate particles on a volume basis.
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公开(公告)号：US20220029243A1
公开(公告)日：2022-01-27
申请号：US17414199
申请日：2019-12-11
Inventor： Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M50/423 , H01M10/0525
Abstract: This non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The separator includes: a porous base material; a first filler layer which contains phosphate particles as a primary component and is arranged on one surface of the base material; and a second filler layer which is disposed between the base material and the first filler layer and which contains at least one type of compound selected from the group consisting of an aromatic polyamide, an aromatic polyimide and an aromatic polyiamideimide. The BET specific surface area of the phosphate particles is 5-100 m2/g. The content of the aforementioned compounds in the second filler layer is 15 mass % or greater.
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公开(公告)号：US10892472B2
公开(公告)日：2021-01-12
申请号：US16471134
申请日：2017-12-11
Inventor： Yuki Morikawa , Yasunori Baba , Takashi Ko , Fumiharu Niina , Katsunori Yanagida
IPC: H01M4/131 , H01M4/133 , H01M4/525 , H01M4/587 , H01M10/0525 , H01M4/505 , H01M10/0567 , H01M4/62 , H01M4/485 , H01M4/13 , H01M10/052 , H01M4/36
Abstract: A non-aqueous electrolyte secondary battery which uses a lithium titanium composite oxide as a negative electrode active material is configured to use a first positive electrode active material that is a Co-containing lithium transition metal oxide and has a volume per mass of 8 mm3/g or more with respect to pores having a pore diameter of 100 nm or less and a second positive electrode active material that has a volume per mass of 5 mm3/g or less with respect to pores having a pore diameter of 100 nm or less.
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公开(公告)号：US20200243827A1
公开(公告)日：2020-07-30
申请号：US16637034
申请日：2018-11-02
Inventor： Yuki Morikawa , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer disposed on one side of the substrate and containing phosphate salt particles, and a second filler layer disposed on the other side of the substrate and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the side of the substrate which bears the first filler layer is directed to the positive electrode side.
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Patent Agency Ranking
公开(公告)号：US20180309116A1
公开(公告)日：2018-10-25
申请号：US15770581
申请日：2016-11-21
Inventor： Natsumi Goto , Masanori Sugimori , Kouhei Tuduki , Katsunori Yanagida
IPC: H01M4/36 , H01M10/0525 , H01M10/0569 , H01M4/525 , H01M4/587
CPC classification number: H01M4/364 , H01M4/366 , H01M4/485 , H01M4/525 , H01M4/587 , H01M4/62 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M2300/0028 , H01M2300/0037 , Y02E60/122 , Y02T10/7011
Abstract: The present invention provides a nonaqueous electrolyte secondary battery capable of suppressing the increase in IV resistance of a battery in a combination of a negative electrode containing a lithium-titanium composite oxide and a carbon material and a positive electrode containing a lithium transition metal oxide. A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li and also contains tungsten element. The negative electrode contains a lithium-titanium composite oxide and a carbon material. The nonaqueous electrolyte contains a substance reduced on the negative electrode at a potential of 0.5 V to 1.5 V (vs. Li/Li+).
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公开(公告)号：US20180048014A1
公开(公告)日：2018-02-15
申请号：US15549448
申请日：2016-04-13
Inventor： Masanori Sugimori , Katsunori Yanagida , Natsumi Goto
IPC: H01M10/052 , H01M2/16 , H01M4/62 , H01M4/36 , H01M4/485 , H01M10/0568 , H01M4/13
CPC classification number: H01M10/052 , C01D15/00 , C01G23/005 , C01G41/02 , C01G53/006 , C01G53/44 , C01G53/50 , C01P2002/50 , C01P2002/54 , C01P2004/84 , C01P2006/12 , H01M2/16 , H01M2/162 , H01M2/1626 , H01M4/13 , H01M4/131 , H01M4/36 , H01M4/485 , H01M4/62 , H01M10/0525 , H01M10/054 , H01M10/0568 , H01M2004/027
Abstract: The present invention aims to provide a non-aqueous electrolyte secondary battery in which the amount of a gas generated during charge/discharge cycles, during storage, or the like is small although a cellulose-made separator is used. A non-aqueous electrolyte secondary battery which is one example of an embodiment includes a positive electrode including a positive electrode collector and a positive electrode mixture layer formed thereon; a negative electrode including a negative electrode collector and a negative electrode mixture layer formed thereon; a separator formed from a cellulose as a primary component; and a fluorine-containing non-aqueous electrolyte. In the positive electrode mixture layer, a lithium transition metal oxide and a phosphoric acid compound are contained.
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公开(公告)号：US12224452B2
公开(公告)日：2025-02-11
申请号：US16637034
申请日：2018-11-02
Inventor： Yuki Morikawa , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M2/16 , H01M4/131 , H01M4/36 , H01M4/58 , H01M4/66 , H01M10/0525 , H01M50/417 , H01M50/423 , H01M50/451 , H01M50/457 , H01M50/46 , H01M4/02
Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer disposed on one side of the substrate and containing phosphate salt particles, and a second filler layer disposed on the other side of the substrate and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the side of the substrate which bears the first filler layer is directed to the positive electrode side.
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公开(公告)号：US11695117B2
公开(公告)日：2023-07-04
申请号：US16640128
申请日：2018-12-14
Inventor： Natsumi Goto , Masanori Sugimori , Yasunori Baba , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M4/58 , H01M50/414 , H01M50/457 , H01M50/46 , H01M10/0525 , H01M50/451 , H01M50/443 , H01M4/02 , H01M50/417 , H01M50/42 , H01M50/426
CPC classification number: H01M4/58 , H01M10/0525 , H01M50/414 , H01M50/443 , H01M50/451 , H01M50/457 , H01M50/46 , H01M50/417 , H01M50/42 , H01M50/426 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: In a non-aqueous electrolyte secondary battery according to one exemplary embodiment, a separator includes a substrate, a first filler layer containing phosphate particles and formed on at least one surface of the substrate, and a second filler layer containing inorganic particles and formed on a surface of the first filler layer on the side of the at least one surface of the substrate. The phosphate particles have a BET specific surface area of 5 m2/g or more and 100 m2/g or less.
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公开(公告)号：US11621458B2
公开(公告)日：2023-04-04
申请号：US16638998
申请日：2018-08-30
Inventor： Yasunori Baba , Masanori Sugimori , Katsunori Yanagida , Nobuhiro Hirano
IPC: H01M50/449 , H01M10/0525 , H01M50/411 , H01M50/431
Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer containing phosphate salt particles, and a second filler layer interposed between the substrate and the first filler layer and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the first filler layer and the second filler layer are directed to the positive electrode side. Further, a resin layer is disposed between the positive electrode and the first filler layer.
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