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：US10553856B2

公开(公告)日：2020-02-04

申请号：US15770581

申请日：2016-11-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Natsumi Goto ,  Masanori Sugimori ,  Kouhei Tuduki ,  Katsunori Yanagida

IPC: H01M6/16 ,  H01M4/36 ,  H01M4/485 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/587

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+).

公开(公告)号：US10103382B2

公开(公告)日：2018-10-16

申请号：US15342899

申请日：2016-11-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Natsumi Goto ,  Takashi Takeuchi ,  Masaki Hasegawa

IPC: H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/505 ,  H01M10/42 ,  H01M4/02

Abstract: A nonaqueous electrolyte secondary battery disclosed in the present application includes: a positive electrode capable of absorbing and releasing lithium, containing a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystalline structure; and a negative electrode capable of absorbing and releasing lithium, containing a negative electrode active material composed of a lithium-containing transition metal oxide obtained by substituting some of Ti element of a lithium-containing titanium oxide having a spinel crystalline structure with one or more element different from Ti, wherein a retention of the negative electrode is set to be greater than a retention of the positive electrode, and an irreversible capacity rate of the negative electrode is set to be greater than an irreversible capacity rate of the positive electrode, whereby a discharge ends by negative electrode limitation.

公开(公告)号：US20210159498A1

公开(公告)日：2021-05-27

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 ,  H01M50/46 ,  H01M50/457 ,  H01M10/0525

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：US20190173085A1

公开(公告)日：2019-06-06

申请号：US15772701

申请日：2016-11-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanori Sugimori ,  Natsumi Goto ,  Kouhei Tuduki ,  Katsunori Yanagida

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/485

Abstract: 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 first lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li; a second lithium transition metal oxide in which Co and Ni account for 60 mole percent or more and 20 mole percent or less, respectively, of the total molar amount of metal elements excluding Li; and tungsten element. The negative electrode contains a lithium-titanium composite oxide.

公开(公告)号：US20230335717A1

公开(公告)日：2023-10-19

申请号：US18027802

申请日：2021-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Natsumi Goto ,  Takashi Ko ,  Sho Tsuruta ,  Kohei Kintsu ,  Fumiharu Niina

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M2004/028

Abstract: Provided is a non-aqueous electrolyte secondary battery, wherein: a positive electrode active material includes a lithium transition metal composite oxide containing at least Ni, Mn, and B; 80 mol %≤Ni≤95 mol %; 0 mol %

公开(公告)号：US20180309116A1

公开(公告)日：2018-10-25

申请号：US15770581

申请日：2016-11-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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+).

公开(公告)号：US20180048014A1

公开(公告)日：2018-02-15

申请号：US15549448

申请日：2016-04-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO. LTD.

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.