公开(公告)号：US12206091B2

公开(公告)日：2025-01-21

申请号：US16905973

申请日：2020-06-19

Applicant: University of Louisville Research Foundation, Inc.

Inventor： Gamini U. Sumanasekera ,  Mahendra K. Sunkara ,  Alejandro Martinez-Garcia ,  Ruchira Ravinath Dharmasena

IPC: H01M4/136 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1397 ,  H01M10/0525

Abstract: A high capacity anode material comprising pre-lithiated α-MoO3 nanostructures is provided. A lithium sulfur full cell, battery, or pouch cell comprising the anode material and methods of fabricating the same are also provided.

公开(公告)号：US20240243355A1

公开(公告)日：2024-07-18

申请号：US18414127

申请日：2024-01-16

Applicant: Nuvvon, Inc.

Inventor： Manveer S. Sidhu

IPC: H01M10/0565 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M10/0585 ,  H01M50/403 ,  H01M50/426 ,  H01M50/46 ,  H01M50/497

CPC classification number: H01M10/0565 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M10/0585 ,  H01M50/403 ,  H01M50/426 ,  H01M50/46 ,  H01M50/497 ,  H01M2004/028 ,  H01M2300/0082

Abstract: A polymer electrolyte including a polyvinylidene fluoride (PVDF), a lithium salt, and a cyanoethyl polyvinyl alcohol (CN-PVA). In various embodiments, the PVDF may be a PVDF (534K) or a PVDF (700K). In the various embodiments, the lithium salt may be a lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The polymer electrolyte, comprising the PVDF, the lithium salt, and the CN-PVA, is formed into a free-standing membrane that has an ionic conductivity greater than 1×10−5 S/cm at a temperature greater than or equal to 25° C. The polymer electrolyte functions as a catholyte in a composite cathode with a cathode active material. In another aspect, the polymer electrolyte is formed as a polymer electrolyte separator on the composite cathode; the composite cathode and the polymer electrolyte separator useable in a rechargeable battery cell. And yet in other aspects, methods for manufacturing the polymer electrolyte, the composite cathode, and the polymer electrolyte separator.

公开(公告)号：US12027702B2

公开(公告)日：2024-07-02

申请号：US17160735

申请日：2021-01-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro Kawakami ,  Masaki Yamakaji

IPC: H01M4/58 ,  B60L50/64 ,  B82Y30/00 ,  H01M4/02 ,  H01M4/136 ,  H01M4/1397 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M4/5825 ,  B60L50/64 ,  B82Y30/00 ,  H01M4/136 ,  H01M4/1397 ,  H01M10/0436 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20 ,  Y02E60/10 ,  Y02P70/50 ,  Y02T10/70

Abstract: An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more, further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°.

公开(公告)号：US20240162482A1

公开(公告)日：2024-05-16

申请号：US18383961

申请日：2023-10-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Panasonic Holdings Corporation

Inventor： Masahiro IWASAKI ,  Masaki HIRASE ,  Hiroki YABE ,  Yusuke ITO

IPC: H01M10/0562 ,  H01M4/136 ,  H01M4/1397

CPC classification number: H01M10/0562 ,  H01M4/136 ,  H01M4/1397 ,  H01M2004/028

Abstract: There is provided a positive electrode material that can be used to manufacture a solid-state battery whose initial resistance is kept low and at which it is difficult for resistance to increase even if charging/discharging are repeated. The positive electrode material of the present disclosure contains a positive electrode active material complex and a sulfide solid electrolyte. The positive electrode active material complex contains: a positive electrode active material, a conductive additive covering at least a portion of a surface of the positive electrode active material, and a solid electrolyte covering at least a portion of the conductive additive. The solid electrolyte contains Li, Ti, X and F. The X is at least one selected from the group consisting of Ca, Mg, Al, Y and Zr.

公开(公告)号：US11984577B2

公开(公告)日：2024-05-14

申请号：US17707563

申请日：2022-03-29

Applicant: UT-BATTELLE, LLC

Inventor： Zhijia Du ,  Christopher James Janke ,  Jianlin Li ,  David L. Wood, III ,  Claus Daniel

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/62

CPC classification number: H01M4/0419 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/621 ,  H01M2004/028

Abstract: A method of making an electrode includes the step of mixing active material particles, radiation curable resin precursors, and electrically conductive particles to create an electrode precursor mixture. The electrode precursor mixture is electrostatically sprayed onto a current collector to provide an electrode preform. The electrode preform is heated and calendered to melt the resin precursor such that the resin precursor surrounds the active particles and electrically conductive particles. Radiation is applied to the electrode preform sufficient to cure the radiation curable resin precursors into resin.

公开(公告)号：US20240154094A1

公开(公告)日：2024-05-09

申请号：US18450854

申请日：2023-08-16

Applicant: Sila Nanotechnologies, Inc.

Inventor： Gleb Nikolayevich YUSHIN ,  Bogdan ZDYRKO ,  Alexander Thomas JACOBS ,  Eugene Michael BERDICHEVSKY

IPC: H01M4/136 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/58 ,  H01M4/62

CPC classification number: H01M4/136 ,  H01M4/0404 ,  H01M4/0428 ,  H01M4/0447 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/582 ,  H01M4/625

Abstract: A battery electrode composition is provided that comprises composite particles. Each composite particle may comprise, for example, active fluoride material and a nanoporous, electrically-conductive scaffolding matrix within which the active fluoride material is disposed. The active fluoride material is provided to store and release ions during battery operation. The storing and releasing of the ions may cause a substantial change in volume of the active material. The scaffolding matrix structurally supports the active material, electrically interconnects the active material, and accommodates the changes in volume of the active material.

公开(公告)号：US20240145707A1

公开(公告)日：2024-05-02

申请号：US18497567

申请日：2023-10-30

Applicant: BAR-ILAN UNIVERSITY ,  NICHIA CORPORATION

Inventor： Doron AURBACH ,  Shunsuke SAWADA ,  Shalom LUSKI

IPC: H01M4/58 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/583 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/5815 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/583 ,  H01M4/623 ,  H01M10/052 ,  H01M2004/028

Abstract: A cathode for Li—S battery includes a current collector and a cathode composite layer disposed on the current collector. The cathode composite layer includes (i) a porous carbon layer, (ii) a first binder that is at least partially in contact with the porous carbon layer and (iii) elemental sulfur. A second binder is at least partially disposed between the current collector and the cathode composite layer. A Li—S battery also is contemplated, as are methods of fabricating the cathode and the battery.

公开(公告)号：US11962013B2

公开(公告)日：2024-04-16

申请号：US17178286

申请日：2021-02-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaki Yamakaji ,  Kuniharu Nomoto

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/58

CPC classification number: H01M4/625 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/622 ,  H01M4/0404 ,  H01M4/5825

Abstract: The positive electrode active material layer includes a plurality of particles of a positive electrode active material and a reaction mixture where reduced graphene oxide is bonded to a polymer having a functional group as a side chain. The reduced graphene oxide has a sheet-like shape and high conductivity and thus functions as a conductive additive by being in contact with the plurality of particles of the positive electrode active material. The reaction mixture serves as an excellent binder since the reduced graphene oxide is bonded to the polymer. Therefore, even a small amount of the reaction mixture where the reduced graphene oxide is covalently bonded to the polymer excellently serves as a conductive additive and a binder.

公开(公告)号：US20240072257A1

公开(公告)日：2024-02-29

申请号：US18454643

申请日：2023-08-23

Applicant: QPIVOLTA TECHNOLOGIES PRIVATE LIMITED

Inventor： MANJUNATH GANGAIAH ,  NAWAF ALAMPARA ,  ASWANTH KRISHNAN ,  PINAKIN MANSUKHLAL PADALIA ,  NAGENDRA NAGARAJA

IPC: H01M4/58 ,  C01G49/00 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M4/66

CPC classification number: H01M4/5825 ,  C01G49/009 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/028

Abstract: The embodiments herein provide lithium iron phosphate (LFP) cathode active materials and a method for deposition of the LFP active materials on an aluminum-foil current collector for lithium-ion (Li-ion) batteries. The embodiments herein utilize an aqueous based LFP precursor slurry made using combustion chemistry, where the LFP precursor slurry is composed of a redox mixture of the nitrates of lithium and iron, dihydrogen ammonium phosphate and glycine in water in the presence of flora-based sodium-carboxy methylcellulose as an organic binder. Furthermore, the thick and transparent precursors slurry is deposited on the aluminum current collector followed by annealing at appropriate pressures and atmospheric conditions. Therefore, the heat liberated in the exothermic reaction of the redox mixture not only assists in the formation of LFP cathode active materials, but also in the incineration of the organic binders and the solvent.

公开(公告)号：US20240063400A1

公开(公告)日：2024-02-22

申请号：US18491279

申请日：2023-10-20

Applicant: HYDRO-QUÉBEC

Inventor： Nicolas DELAPORTE ,  Abdelbast GUERFI ,  Karim ZAGHIB

IPC: H01M4/80 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/054

CPC classification number: H01M4/806 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/621 ,  H01M4/663 ,  H01M4/667 ,  H01M10/0525 ,  H01M10/054 ,  H01M2004/027

Abstract: The present technology relates to self-standing electrodes, their use in electrochemical cells, and their production processes using a water-based filtration process. For example, the self-standing electrodes may be used in lithium-ion batteries (LIBs). Particularly, the self-standing electrodes comprise a first electronically conductive material serving as a current collector, the surface of the first electronically conductive material being grafted with a hydrophilic group, a binder comprising cellulose fibres, an electrochemically active material, and optionally a second electronically conductive material. A process for the preparation of the self-standing electrodes is also described.