公开(公告)号：US20250055033A1

公开(公告)日：2025-02-13

申请号：US18723960

申请日：2022-10-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuanlong Zhong ,  Satoshi Nishitani

IPC: H01M10/0567 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: Disclosed is a non-aqueous electrolyte secondary battery including: a negative electrode that includes a negative electrode active material; a separator; a positive electrode that is provided to oppose the negative electrode with the separator interposed therebetween; and a non-aqueous electrolyte. The negative electrode active material includes 3 mass % or more of a silicon-containing material. The silicon-containing material includes carbon composite particles. Each of the carbon composite particles includes a carbon phase and a silicon phase dispersed in the carbon phase. The non-aqueous electrolyte contains a 5- or 6-membered sulfur-containing cyclic ester compound that has a carbon-carbon unsaturated bond and a structure represented by —O—S(═O)n-O—, where n is 1 or 2.

公开(公告)号：US20230378457A1

公开(公告)日：2023-11-23

申请号：US18034509

申请日：2021-10-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuanlong Zhong

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/42 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/4235 ,  C01G53/50 ,  C01G53/66 ,  H01M2004/028

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte, in which the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, Mn, and Al, proportions of Ni, Mn, and Al in metal elements other than Li contained in the lithium-transition metal composite oxide are, respectively, Ni: 50 atm % or more, Mn: 10 atm % or less, and Al: 10 atm % or less, when the lithium-transition metal composite oxide contains Co, a content of Co in the metal elements other than Li is 1.5 atm % or less, and the non-aqueous electrolyte includes a fluorosulfonic acid salt.

公开(公告)号：US20200076000A1

公开(公告)日：2020-03-05

申请号：US16495698

申请日：2018-01-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuru Iwai ,  Yuanlong Zhong

IPC: H01M10/0569 ,  H01M4/525 ,  H01M10/0525 ,  C07D309/10 ,  C07D319/12

Abstract: A non-aqueous electrolyte includes a lithium salt, and a non-aqueous solvent dissolving the lithium salt. The non-aqueous solvent contains a fluorinated cyclic carbonic acid ester, a carboxylic anhydride A having a structure represented by a general formula (1) below, and a carboxylic anhydride B having a structure represented by a general formula (2) below. (In the general formula (1), n represents 0 or 1, and R1 to R4 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group.) (In the general formula (2), R5 to R8 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group.)

公开(公告)号：US11870035B2

公开(公告)日：2024-01-09

申请号：US16640293

申请日：2018-07-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomoki Tsuji ,  Yuanlong Zhong

IPC: H01M10/0567 ,  C07D319/12 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M10/0567 ,  C07D319/12 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A non-aqueous electrolyte secondary cell provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode has a positive electrode active material that contains composite oxide particles which include Ni, Co, Li, and at least one of Mn and Al, and in which the proportion of Ni in relation to the total number of moles of metal elements excluding Li is at least 80 mol %. In the composite oxide particles, the ratio (B/A) of the post-particle-compression-test BET specific surface area (B) with respect to the pre-particle-compression-test BET specific surface area (A) is 1.0-3.0. The non-aqueous electrolyte contains a non-aqueous solvent and a cyclic carboxylic anhydride such as diglycolic anhydride.

公开(公告)号：US20220029164A1

公开(公告)日：2022-01-27

申请号：US17296473

申请日：2019-12-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuanlong Zhong

IPC: H01M4/587 ,  H01M10/0567 ,  H01M10/0525

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a graphite. The graphite has a BET specific surface area of 3 m2/g or less. The non-aqueous electrolyte includes a silyl compound represented by a formula (1): (R1R2R3Si—O)m-M=(O)n. In the formula (1), M is P, B or S, n is 0, 1 or 2, m is 2 or 3, and each of R1 to R3 is independently an alkyl group, a fluoroalkyl group, an alkenyl group, a fluoroalkenyl group, an aryl group, a fluoroaryl group, or a hydrogen atom.

公开(公告)号：US10991981B2

公开(公告)日：2021-04-27

申请号：US16472561

申请日：2017-12-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masaki Hasegawa ,  Yuanlong Zhong

IPC: H01M10/0567 ,  C07D251/34 ,  C07D319/12 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02

Abstract: This nonaqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode and a non-aqueous electrolyte. The non-aqueous electrolyte contains: a non-aqueous solvent that contains a fluorine-containing cyclic carbonate; an isocyanuric acid derivative such as triallyl isocyanurate; and a cyclic carboxylic acid anhydride such as diglycolic acid anhydride.

公开(公告)号：US20240291033A1

公开(公告)日：2024-08-29

申请号：US18564871

申请日：2022-05-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuanlong Zhong

IPC: H01M10/0567 ,  C07F5/02 ,  C07F7/08 ,  C07F9/6574 ,  H01M4/02 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M10/0567 ,  C07F5/022 ,  C07F7/0805 ,  C07F9/65748 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material, and the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, Mn, and Al. The proportions of Ni, Mn, and Al in metal elements other than Li contained in the lithium-transition metal composite oxide are, respectively, Ni: 50 atm % or more, Mn: 10 atm % or less, and Al: 10 atm % or less. When the lithium-transition metal composite oxide contains Co, the proportion of Co in the metal elements other than Li is 1.5 atm % or less. The nonaqueous electrolyte contains an oxalate compound, and the oxalate compound contains a lithium cation and an oxalate complex anion.

公开(公告)号：US20230395794A1

公开(公告)日：2023-12-07

申请号：US18034175

申请日：2021-10-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tasuku Ishiguro ,  Yuanlong Zhong ,  Chisaki Fujitomo

IPC: H01M4/525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/505

CPC classification number: H01M4/525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/505

Abstract: A non-aqueous liquid electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte, in which the positive electrode includes a positive electrode active material, and a carbon nanotube, the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, a proportion of Ni in metal elements other than Li in the lithium-transition metal composite oxide is 80 atm % or more, and the non-aqueous electrolyte includes a fluorosulfonic acid salt.

公开(公告)号：US20210159539A1

公开(公告)日：2021-05-27

申请号：US17045571

申请日：2019-02-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahiro Shiraga ,  Yuanlong Zhong

IPC: H01M10/0567 ,  H01M4/587

Abstract: A nonaqueous-electrolyte secondary cell according to one embodiment of the present disclosure comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains graphite having a BET specific surface area of 2 m2/g or less, and the nonaqueous electrolyte contains a cyclic carboxylic acid anhydride represented by formula (1) or formula (2). In the formula (1), n represents 0, 1, or 2, and R1 to R4 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group. In the formula (2), R5 to R8 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group.

公开(公告)号：US20240290966A1

公开(公告)日：2024-08-29

申请号：US18569130

申请日：2022-05-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuanlong Zhong ,  Shohei Watarigawa

IPC: H01M4/525 ,  H01M4/02 ,  H01M10/0567

CPC classification number: H01M4/525 ,  H01M10/0567 ,  H01M2004/028

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, Mn, and Al, and the proportions of Ni, Mn, and Al in metal elements other than Li contained in the lithium-transition metal composite oxide are, respectively, Ni: 50 atm % or more, Mn: 10 atm % or less, and Al: 10 atm % or less. When the lithium-transition metal composite oxide contains Co, the proportion of Co in the metal dements other than Li is 1.5 atm % or less. The nonaqueous electrolyte includes an organophosphorus compound represented by a general formula (1). In the general formula (1), R1 and R2 are each independently an alkyl group with 1 to 4 carbon atoms, and R3 is a fluorinated alkyl group with 1 to 4 carbon atoms.