公开(公告)号：US20220102808A1

公开(公告)日：2022-03-31

申请号：US17430155

申请日：2020-01-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US20220029243A1

公开(公告)日：2022-01-27

申请号：US17414199

申请日：2019-12-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US10892472B2

公开(公告)日：2021-01-12

申请号：US16471134

申请日：2017-12-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US20200243827A1

公开(公告)日：2020-07-30

申请号：US16637034

申请日：2018-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki Morikawa ,  Masanori Sugimori ,  Yasunori Baba ,  Katsunori Yanagida ,  Nobuhiro Hirano

IPC: H01M2/16 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/66 ,  H01M4/36 ,  H01M4/131

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.

公开(公告)号：US12224452B2

公开(公告)日：2025-02-11

申请号：US16637034

申请日：2018-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US11695117B2

公开(公告)日：2023-07-04

申请号：US16640128

申请日：2018-12-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US11621458B2

公开(公告)日：2023-04-04

申请号：US16638998

申请日：2018-08-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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.

公开(公告)号：US10910633B2

公开(公告)日：2021-02-02

申请号：US16483837

申请日：2018-01-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi Ko ,  Fumiharu Niina ,  Katsunori Yanagida ,  Yasunori Baba ,  Yuki Morikawa

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/583

Abstract: A nonaqueous electrolyte secondary battery in which low-crystalline carbon-covered graphite is used as negative electrode active material, wherein a cobalt-containing lithium transitional metal oxide is used for: a first positive electrode active material in which the volume per unit mass of pores having a pore size of 100 nm or less is 8 mm3/g or greater; and a second positive electrode active material in which the volume per unit mass of pores having a pore size of 100 nm or less is 5 mm3/g or less.

公开(公告)号：US20200251744A1

公开(公告)日：2020-08-06

申请号：US16640226

申请日：2018-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihiko Takada ,  Masanori Sugimori ,  Nobuhiro Hirano ,  Yuki Morikawa ,  Yasunori Baba ,  Katsunori Yanagida

IPC: H01M4/66 ,  H01M4/58 ,  H01M4/62 ,  H01M4/36 ,  H01M2/16 ,  H01M10/0525

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.

公开(公告)号：US20220037740A1

公开(公告)日：2022-02-03

申请号：US17414172

申请日：2019-12-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanori Sugimori ,  Yasunori Baba ,  Katsunori Yanagida ,  Nobuhiro Hirano

IPC: H01M50/446 ,  H01M50/449

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 arranged on the other surface of the base material and which contains at least one type of compound selected from the group consisting of an aromatic polyamide, an aromatic polyimide and an aromatic polyamideimide. 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 32 is 15 mass % or more.