公开(公告)号：US11721800B2

公开(公告)日：2023-08-08

申请号：US17031171

申请日：2020-09-24

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

IPC: H01M4/1315 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/505 ,  C01G45/00 ,  C01G53/00 ,  C01G51/00 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/1315 ,  C01G45/006 ,  C01G51/006 ,  C01G53/006 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  C01P2002/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2006/40 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/0028

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and 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. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.

公开(公告)号：US11710816B2

公开(公告)日：2023-07-25

申请号：US17020530

申请日：2020-09-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takayuki Nakatsutsumi ,  Ryuichi Natsui ,  Nobuhiko Hojo

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

CPC classification number: H01M4/1315 ,  C01G45/006 ,  C01G51/006 ,  C01G53/006 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  C01P2002/54 ,  C01P2002/76 ,  C01P2006/40 ,  H01M4/485 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/004 ,  H01M2300/0034

Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a nonaqueous solvent. 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 nonaqueous solvent includes a solvent having at least one fluoro group.

公开(公告)号：US20220344699A1

公开(公告)日：2022-10-27

申请号：US17764716

申请日：2020-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko Hojo ,  Yuji Tani

IPC: H01M10/0525 ,  H01M10/0569 ,  H01M10/0587

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a lithium ion conductive nonaqueous electrolyte, wherein the negative electrode contains graphite, an open circuit potential of the negative electrode in a fully charged state is 70 mV or less relative to lithium metal, the nonaqueous electrolyte contains a solvent, a cation, and an anion, the solvent contains a fluorine-containing cyclic carbonic acid ester, the cation includes lithium ions, and the anion includes an oxalate complex anion.

公开(公告)号：US20220173399A1

公开(公告)日：2022-06-02

申请号：US17439996

申请日：2020-01-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Matsubara ,  Nobuhiko Hojo ,  Masanobu Takeuchi ,  Atsushi Fukui

IPC: H01M4/62 ,  H01M10/0568 ,  H01M4/587 ,  H01M4/133 ,  H01M10/0525

Abstract: A secondary battery according to the present invention is provided with a positive electrode, a negative electrode and an electrolyte solution; the electrolyte solution contains water and a lithium salt; the negative electrode contains a negative electrode active material; a silane coupling agent, which is reductively decomposed at a potential that is higher than the reductive decomposition potential of water, is adhered to the surface of the negative electrode active material; and the silane coupling agent contains fluorine as a constituent element.

公开(公告)号：US10770719B2

公开(公告)日：2020-09-08

申请号：US15595949

申请日：2017-05-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Kano ,  Junko Matsushita ,  Nobuhiko Hojo

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

Abstract: A negative electrode active material includes a carbon material including boron and a silicon material including at least one selected from silicon and silicon oxide. The silicon material does not include boron. A peak of a B1s spectrum of the carbon material occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy. The ratio of the area of the peak of the B1s spectrum of the carbon material which occurs at a binding energy of 187.0 eV or more and 192.0 eV or less, the B1s spectrum being measured by X-ray photoelectron spectroscopy, to the total area of peaks of the B1s spectrum which occur at a binding energy of 184.0 eV or more and 196.5 eV or less is 50% or more.

公开(公告)号：US09929431B2

公开(公告)日：2018-03-27

申请号：US15158594

申请日：2016-05-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Mayumi Maenishi ,  Nobuhiko Hojo

IPC: H01M10/05 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/485 ,  H01M10/04

CPC classification number: H01M10/0525 ,  H01M4/485 ,  H01M10/0413 ,  H01M10/0436 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0037

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 cyclopropanecarbonitrile. A battery includes an electrolyte solution which contains a non-aqueous solvent containing cyclopropanecarbonitrile and an alkali metal salt dissolved in the non-aqueous solvent, 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：US11196087B2

公开(公告)日：2021-12-07

申请号：US15937808

申请日：2018-03-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Nobuhiko Hojo

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/446 ,  H01M10/0568

Abstract: A nonaqueous electrolyte includes a nonaqueous solvent and an alkali metal salt dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a nitrile compound represented by a formula Rf—CN, where Rf represents a hydrocarbon group which has a carbon number of 2 to 4 and in which at least one hydrogen atom is substituted with fluorine.

公开(公告)号：US20210135277A1

公开(公告)日：2021-05-06

申请号：US16640116

申请日：2018-09-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko Hojo ,  Hiroyuki Matsumoto ,  Kenji Matsubara ,  Hiroshi Kawada ,  Atsushi Fukui

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: An aqueous rechargeable battery includes: a positive electrode including a positive electrode current collector and a positive electrode active material layer provided on a surface of the positive electrode current collector; a negative electrode including a negative electrode current collector and a negative electrode active material layer provided on a surface of the negative electrode current collector; and an aqueous electrolyte solution containing a lithium salt and water. The positive electrode active material layer contains one or more positive electrode active materials and one or more lithium ion-conducting solid electrolytes; and the positive electrode active materials include a lithium transition metal oxide.

公开(公告)号：US10559846B2

公开(公告)日：2020-02-11

申请号：US15959294

申请日：2018-04-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki Nakatsutsumi ,  Akira Kano ,  Junko Matsushita ,  Nobuhiko Hojo

IPC: H01M10/0525 ,  H01M4/133 ,  H01M2/20 ,  H01M4/583 ,  H01M4/134 ,  H01M4/66 ,  H01M4/38 ,  C01B32/21 ,  H01M4/587 ,  H01M4/36 ,  H01M4/62 ,  C01B32/205 ,  H01M4/02

Abstract: A negative-electrode active material comprises a graphite including at least boron and fluorine. The fluorine is disposed at least on a surface of the graphite. A ratio R satisfies 0.5≤R≤1, where R=SBB/SB, and SB denotes a total peak area of a boron 1s spectrum of the graphite obtained by X-ray photoelectron spectroscopy, and SBB denotes a peak area of all spectra each having a peak in a binding energy range of not less than 184.0 eV and not more than 188.5 eV in the boron 1s spectrum.

公开(公告)号：US10411303B2

公开(公告)日：2019-09-10

申请号：US15604657

申请日：2017-05-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirotetsu Suzuki ,  Nobuhiko Hojo

IPC: H01M10/0569 ,  H01M10/052 ,  H01M10/054 ,  H01M10/0568

Abstract: A battery electrolyte comprises: a non-aqueous solvent including a perfluoropolyether that is functionalized at only one molecule end, the perfluoropolyether including perfluoroalkyl chains and oxygen atoms in such a manner that a perfluoroalkyl chain and an oxygen atom are alternately bound to each other; and a metal salt that is a magnesium salt, an alkaline earth metal salt, or an alkali metal salt, and that is dissolved in the non-aqueous solvent.