公开(公告)号：US20250070255A1

公开(公告)日：2025-02-27

申请号：US18714368

申请日：2022-11-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M10/0569 ,  H01M10/0525

Abstract: A lithium secondary battery includes positive and negative electrodes, and a nonaqueous electrolyte having lithium-ion conductivity. In the lithium secondary battery, lithium metal deposits on the negative electrode during charging, and the lithium metal dissolves from the negative electrode during discharging. The nonaqueous electrolyte contains a lithium salt, and a solvent. The solvent includes a first solvent: a chain ether containing no fluorine element, a second solvent: a chain fluorinated ether having a fluorination rate of 60% or more, and a third solvent: a fluorinated ether having a fluorination rate of more than 0% and less than 60%. When the number of moles of the first solvent contained in the nonaqueous electrolyte is M1, and the number of moles of the third solvent contained in the nonaqueous electrolyte is M3, a molar ratio M1/M3 is 0.25 or more and less than 3.

公开(公告)号：US20220359904A1

公开(公告)日：2022-11-10

申请号：US17638500

申请日：2020-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M10/0525 ,  H01M10/0587 ,  H01M4/134

Abstract: A lithium secondary battery including a positive electrode, a negative electrode, a lithium ion conductive nonaqueous electrolyte, and a separator disposed between the positive electrode and the negative electrode; on the negative electrode, a lithium metal deposits at the time of charging, the lithium metal dissolves in the nonaqueous electrolyte at the time of discharging; the nonaqueous electrolyte contains a cation and an anion; the cation includes a lithium ion, and at least one cation X selected from the group consisting of Na, K, Rb, Cs, Fr, Mg, Ca, Sr, Ba, and Al; and the anion includes an oxalate complex anion Y.

公开(公告)号：US20220416237A1

公开(公告)日：2022-12-29

申请号：US17638489

申请日：2020-07-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Kano ,  Shoshi Terada

IPC: H01M4/525 ,  H01M10/0525 ,  H01M10/0566

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a separator, a negative electrode facing the positive electrode, with the separator interposed; and a liquid electrolyte. The positive electrode includes a composite oxide containing lithium as a first metal, and a second metal other than lithium. In the composite oxide, the second metal contains Ni, a content of Ni in the second metal is 90 at % or more, and a content of Co in the second metal is 10 at % or less. The liquid electrolyte contains at least one cation X selected from the group consisting of Na+, K+, Rb+, Cs+, Fe, Mg2+, Ca2+, Sr2+, Ba2+, and Al3+, and an oxalate complex anion Y.

公开(公告)号：US20230335783A1

公开(公告)日：2023-10-19

申请号：US18028886

申请日：2021-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/13

CPC classification number: H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/13

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a fluorinated vinylene ether compound A having a —CF═CH—O— bond, and a non-aqueous solvent.

公开(公告)号：US20230335797A1

公开(公告)日：2023-10-19

申请号：US18028887

申请日：2021-08-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M10/0567 ,  H01M10/052

CPC classification number: H01M10/0567 ,  H01M10/052

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein in the negative electrode, lithium metal deposits during charging and the lithium metal dissolves during discharging, the non-aqueous electrolyte includes a fluoroalcohol, an oxalate complex anion including fluorine, a lithium ion, and a non-aqueous solvent.

公开(公告)号：US20230307627A1

公开(公告)日：2023-09-28

申请号：US18015239

申请日：2021-06-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M10/0568

CPC classification number: H01M4/525 ,  H01M4/131 ,  H01M10/052 ,  H01M10/0568 ,  H01M2004/028

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The positive electrode includes a lithium-transition metal composite oxide. The lithium-transition metal composite oxide contains at least Ni, and has a ratio of Ni to total metal elements other than Li of 90 mol% or more. In the negative electrode, lithium metal deposits during charge, and the lithium metal dissolves during discharge. The non-aqueous electrolyte includes a non-aqueous solvent, lithium ions, an oxalate complex anion having fluorine, and nitrate anions.

公开(公告)号：US20230198022A1

公开(公告)日：2023-06-22

申请号：US17926350

申请日：2021-04-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoshi Terada ,  Akira Kano

IPC: H01M10/0568 ,  H01M10/052 ,  H01M50/46 ,  H01M4/38

CPC classification number: H01M10/0568 ,  H01M10/052 ,  H01M50/46 ,  H01M4/382 ,  H01M2004/027

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. In the negative electrode, lithium metal deposits during charging and the lithium metal dissolves during discharging. The nonaqueous electrolyte includes a lithium ion, a cation of a metal M1 that forms an alloy with lithium, and a halide ion.