公开(公告)号：US09761902B2

公开(公告)日：2017-09-12

申请号：US14707901

申请日：2015-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takafumi Tsukagoshi ,  Nobuhiko Hojo ,  Yu Otsuka

IPC: H01M4/04 ,  H01M10/052 ,  H01M4/1395 ,  H01M4/1393 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/583 ,  H01M4/139 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M10/052 ,  H01M4/0423 ,  H01M4/049 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/5835 ,  H01M10/049 ,  H01M10/0525 ,  Y10T29/49108 ,  Y10T29/49115

Abstract: A negative electrode active material layer containing at least one selected from silicon and a silicon compound as a negative electrode active material is formed, and an amount of lithium exceeding an amount corresponding to a theoretical capacity of the negative electrode active material layer is brought into contact with the negative electrode active material layer so as to prepare a negative electrode. A positive electrode containing a lithium-absorption material capable of irreversibly absorbing lithium is prepared. The positive electrode, the negative electrode, a separator, and a nonaqueous electrolyte are enclosed inside an outer enclosure. A chemical conversion treatment of the negative electrode active material is performed with the lithium brought into contact with the negative electrode active material layer.

公开(公告)号：US11646446B2

公开(公告)日：2023-05-09

申请号：US16961007

申请日：2018-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Takayuki Nakatsutsumi ,  Kazuhiro Iida ,  Atsushi Fukui

IPC: H01M4/00 ,  H01M10/0566 ,  H01M4/485 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/26

CPC classification number: H01M10/0566 ,  H01M4/485 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/26 ,  H01M2300/0002

Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.

公开(公告)号：US20220173389A1

公开(公告)日：2022-06-02

申请号：US17442058

申请日：2020-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuji Tani ,  Junichi Sakamoto ,  Nobuhiko Hojo

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/133 ,  H01M4/36 ,  H01M10/0525

Abstract: A non-aqueous electrolyte secondary battery, wherein a negative electrode includes a negative electrode mixture layer having a thickness T and a negative electrode current collector, the negative electrode active material includes carbon and Si-containing materials, wherein when the negative electrode mixture layer is divided into a first region having a thickness of T/2 on the surface side of the negative electrode and a second region having a thickness of T/2 on the negative electrode collector side, a mass ratio of the first to the second composite material contained in the first region is >1, a mass ratio of the first composite to the second composite material contained in the second region is

公开(公告)号：US10833316B2

公开(公告)日：2020-11-10

申请号：US15813218

申请日：2017-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M4/505 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525 ,  H01M4/485 ,  C01G45/00 ,  H01M10/0525 ,  C01G51/00 ,  C01G53/00 ,  H01M10/0566 ,  H01M4/58 ,  H01M10/0569 ,  H01M4/02

Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyOαFβ. (1) Here, Me is one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and C. x, y, α, and β satisfy the following conditions: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.

公开(公告)号：US10811672B2

公开(公告)日：2020-10-20

申请号：US15813204

申请日：2017-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/052 ,  C01G45/00 ,  C01G51/00 ,  C01G53/00 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, α, and β satisfy the following requirements: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2. The additive is at least one selected from dinitrile compounds and diisocyanate compounds.

公开(公告)号：US10797315B2

公开(公告)日：2020-10-06

申请号：US15597179

申请日：2017-05-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Kano ,  Junichi Sakamoto ,  Nobuhiko Hojo

IPC: H01M4/485 ,  H01G11/06 ,  C01G23/00 ,  C30B29/32 ,  H01G11/46 ,  H01G11/50 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/02 ,  H01G11/68 ,  H01M4/62 ,  H01M4/66 ,  H01M4/04 ,  H01M4/1391

Abstract: An electrochemical device includes a negative electrode containing a negative electrode active material, a positive electrode, and an electrolyte. The negative electrode active material has a crystal structure with an Fm3m space group and contains a compound represented by composition formula (1) below, LixTiyOz   Formula (1), where 0.4≤x/y

公开(公告)号：US10529997B2

公开(公告)日：2020-01-07

申请号：US15796650

申请日：2017-10-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko Hojo

IPC: H01M8/04276 ,  H01M8/18

Abstract: A redox flow battery includes first and second electrodes, a separator separating the first and second electrodes, an active material, an electrolytic solution containing a redox species, and a circulation mechanism. The active material is insoluble in the electrolytic solution. The circulation mechanism circulates the electrolytic solution between the first electrode and the active material. The redox species performs oxidation and reduction at the first electrode and is oxidized and reduced by the active material. The circulation mechanism includes an electrolytic solution container containing the active material and a permeation preventing unit. The electrolytic solution is brought into contact with the active material in the electrolytic solution container, and the redox species is oxidized and reduced by the active material. The permeation preventing unit is disposed adjacent the outlet for the electrolytic solution of the electrolytic solution container and prevents permeation of the active material.

公开(公告)号：US10403935B2

公开(公告)日：2019-09-03

申请号：US15158593

申请日：2016-05-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Nobuhiko Hojo

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0568

Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether having a weight-average molecular weight of 350 or more and less than 760. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.

公开(公告)号：US10153512B2

公开(公告)日：2018-12-11

申请号：US15157486

申请日：2016-05-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Mayumi Maenishi ,  Nobuhiko Hojo

IPC: H01M4/131 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0564 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0567

Abstract: An electrolyte solution contains a non-aqueous solvent and an alkali metal salt dissolved in the non-aqueous solvent. The non-aqueous solvent contains a linear carboxylate represented by the following formula: where R1 and R2 independently represent an aromatic group, an unsaturated aliphatic group, or a saturated aliphatic group. A battery includes the electrolyte solution, a positive electrode containing a positive electrode active material that has a property of occluding and releasing an alkali metal ion, and a negative electrode containing an alkali metal or a negative electrode active material that has a property of occluding and releasing the alkali metal ion.

公开(公告)号：US09825297B2

公开(公告)日：2017-11-21

申请号：US14893029

申请日：2014-05-22

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Akira Kano ,  Nobuhiko Hojo ,  Masahisa Fujimoto

IPC: H01M4/587 ,  H01M4/133 ,  H01M10/054 ,  C01B31/02 ,  H01M4/02

CPC classification number: H01M4/587 ,  C01B32/05 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative-electrode active material for a sodium-ion secondary battery contains a porous carbon material which has a plurality of open pores that extend through to the surface, a plurality of closed pores that do not extend through to the surface, and a solid made of carbon material. The distance between (002) planes of the solid portion is not less than 0.340 nm and not more than 0.410 nm. The plurality of closed pores account for a volume ratio of not less than 0% and not more than 10% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion. The plurality of open pores account for a volume ratio of not less than 0% and not more than 50% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion.