公开(公告)号：US20240136532A1

公开(公告)日：2024-04-25

申请号：US18382433

申请日：2023-10-19

Applicant: PRIMEARTH EV ENERGY CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  PRIME PLANET ENERGY & SOLUTIONS, INC.

Inventor： Hidenori YOKOO ,  Ryotaro SAKAI ,  Nobuaki KOIWA ,  Kentaro SUZUKI

IPC: H01M4/62 ,  C01B32/159 ,  C01B32/168

CPC classification number: H01M4/625 ,  C01B32/159 ,  C01B32/168 ,  H01M4/626 ,  C01B2202/02 ,  C01B2202/06 ,  C01B2202/22 ,  C01P2006/40

Abstract: An electrode mixture including an electrode active material, a conductive fibrous carbon material, and inorganic nanoparticles applied to a surface of the electrode active material. The conductive fibrous carbon material contains magnetic metal. A ratio of coverage of the inorganic nanoparticles covering the surface of the electrode active material to content of the magnetic metal contained in the conductive fibrous carbon material is 38.5 or less.

公开(公告)号：US20240136506A1

公开(公告)日：2024-04-25

申请号：US17970355

申请日：2022-10-19

Applicant: Enevate Corporation

Inventor： Qing Zhang ,  Younes Ansari ,  Benjamin Yong Park ,  Jose Vega ,  Sung Won Choi

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M4/625 ,  H01M2004/027

Abstract: Systems and methods are provided for silicon with a carbon-based coating for lithium-ion battery electrodes. An example electrode, for use in an electrochemical cell, includes an active material that includes a plurality of silicon particles, with each silicon particle having a coating covering a surface of the particle. The coating may include a carbon based coating. A least a portion of the silicon (e.g., at least 70%) in the silicon particles is elemental silicon.

公开(公告)号：US11967710B2

公开(公告)日：2024-04-23

申请号：US17152830

申请日：2021-01-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya Ikenuma

IPC: H01M4/505 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/505 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M2220/30 ,  Y02E60/10 ,  Y02P70/50

Abstract: As a positive electrode active material of a secondary battery, a lithium-manganese composite oxide containing lithium, manganese, and an element represented by M, and oxygen is used, and the lithium-manganese composite oxide is covered with reduced graphene oxide. An active material layer including the active material, graphene oxide, a conductive additive, and a binder is formed and soaked in alcohol, and then heat treatment is performed, whereby an electrode with reduced graphene oxide is fabricated.

公开(公告)号：US11967702B2

公开(公告)日：2024-04-23

申请号：US17298878

申请日：2020-05-13

Applicant: LG CHEM, LTD.

Inventor： Bong Soo Kim ,  Seungbo Yang

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/362 ,  H01M4/133 ,  H01M4/38 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: Disclosed is a sulfur-carbon composite, and a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. More specifically, since the carbon contained in the sulfur-carbon composite includes carbon of various shapes and in particular, includes sheet-type carbon in a certain content, when the sulfur-carbon composite is applied as a positive electrode active material of a lithium secondary battery, the performance of the lithium secondary battery may be improved by preventing the leaching of sulfur and improving the reaction rate at the positive electrode.

公开(公告)号：US20240128467A1

公开(公告)日：2024-04-18

申请号：US18469267

申请日：2023-09-18

Applicant: CPS Technology Holdings LLC ,  Clarios Germany GmbH & Co. KG

Inventor： Richard M. Sturgeon ,  Dennis A. Wetzel ,  Robert G. Gruenstern ,  William J. Wruck ,  Ramachadran Subbaraman ,  James Symanski ,  Eberhard Meissner

IPC: H01M4/68 ,  H01G11/24 ,  H01G11/28 ,  H01G11/34 ,  H01G11/36 ,  H01G11/40 ,  H01M4/62 ,  H01M4/66 ,  H01M4/73 ,  H01M4/74

CPC classification number: H01M4/68 ,  H01G11/24 ,  H01G11/28 ,  H01G11/34 ,  H01G11/36 ,  H01G11/40 ,  H01M4/625 ,  H01M4/663 ,  H01M4/667 ,  H01M4/668 ,  H01M4/73 ,  H01M4/74 ,  H01M10/12

Abstract: An electrical storage device includes high surface area fibers (e.g., shaped fibers and/or microfibers) coated with carbon (graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, CNT, or graphite coated CNT), electrolyte, and/or electrode active material (e.g., lead oxide) in electrodes. The electrodes are used to form electrical storage devices such as electrochemical batteries, electrochemical double layer capacitors, and asymmetrical capacitors.

公开(公告)号：US11962012B2

公开(公告)日：2024-04-16

申请号：US17060588

申请日：2020-10-01

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Atsushi Sugihara

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/625 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M10/0525 ,  H01M2004/027

Abstract: A method of producing a negative electrode includes at least the following (A) to (C): (A) mixing powder consisting of lithium titanate oxide particles, a binder, and a solvent to prepare a particle-dispersed liquid; (B) granulating powder consisting of graphite-based particles by using the particle-dispersed liquid to prepare wet granules; and (C) forming the wet granules into a negative electrode composite material layer to produce a negative electrode. The negative electrode composite material layer is formed so as to include the lithium titanate oxide particles in an amount not lower than 2 mass % and not higher than 15 mass % of the total amount of the graphite-based particles and the lithium titanate oxide particles.

公开(公告)号：US20240120493A1

公开(公告)日：2024-04-11

申请号：US18275454

申请日：2022-02-02

Applicant: KURARAY CO., LTD.

Inventor： Shohei KOBAYASHI ,  Shushi NISHIMURA ,  Hideharu IWASAKI

IPC: H01M4/62 ,  C01B32/324 ,  C01B32/336 ,  C01B32/384 ,  H01M4/13 ,  H01M10/052

CPC classification number: H01M4/625 ,  C01B32/324 ,  C01B32/336 ,  C01B32/384 ,  H01M4/13 ,  H01M10/052 ,  H01M2004/028

Abstract: Provided is an additive for nonaqueous electrolyte secondary battery positive electrodes, which can improve the electrical conductivity of electrodes, decrease the resistance of electrodes, and increase the use efficiency of cation species such as lithium ions, sodium ions, various quaternary ammonium salts, and phosphonium salts. The additive includes a carbonaceous material having a specific surface area as determined by the BET method of from 1,000 m2/g to 2,000 m2/g, a micropore volume as determined by the DFT method of less than 0.60 cm3/g, and an oxygen content as measured by elemental analysis of 0.5% by mass or more and less than 1.3% by mass.

公开(公告)号：US11955636B2

公开(公告)日：2024-04-09

申请号：US17477828

申请日：2021-09-17

Applicant: UCHICAGO ARGONNE, LLC

Inventor： Matthew Li ,  Khalil Amine ,  Jun Lu

IPC: H01M4/00 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/62 ,  H01M4/66

CPC classification number: H01M4/5815 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2004/028 ,  H01M4/133 ,  H01M4/134 ,  H01M4/625 ,  H01M4/661 ,  H01M2300/0028

Abstract: An electrochemical device includes a cathode comprising a first cathode component of lithium and SexSy; and a second cathode component of an alkali metal and/or alkaline earth metal sulfur and/or selenide, different from the first cathode component; an initial discharge product of a polyselenide and/or polysulfide anion charge compensated by an alkali metal and/or alkaline earth metal cation; an anode; a porous separator; and a non-aqueous electrolyte with one or more lithium salts, and one or more solvents; wherein the electrochemical device is a lithium sulfur and/or lithium selenide battery.

公开(公告)号：US20240113325A1

公开(公告)日：2024-04-04

申请号：US18376350

申请日：2023-10-03

Applicant: Revolution Power Inc.

Inventor： David Shock ,  Yujia Liang ,  Daniel Wainwright Shaw ,  James Bradley Downar, III

IPC: H01M10/056 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0585 ,  H01M50/105

CPC classification number: H01M10/056 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/625 ,  H01M10/0585 ,  H01M50/105 ,  H01M2004/028 ,  H01M2300/0065 ,  H01M2300/0091 ,  H01M2300/0094

Abstract: Methods and systems are provided for manufacturing and implementing solid-state electrolytes (SSEs) for aluminum-based rechargeable batteries and other secondary batteries. In some examples, a SSE composition may include a mixture including urea, sodium chloride, sodium borate, magnesium sulfate, and sodium silicate. In certain examples, the SSE composition may further include carboxymethyl cellulose. In some examples, an aluminum-based secondary battery may be formed by applying a first portion of the SSE composition to an aluminum-based anode via slot-die coating and a second portion of the SSE composition to a cellulose membrane to form a SSE layer, and combining the coated aluminum-based anode, the SSE layer, and a sulfur-based cathode. In certain examples, a current pulse may be applied to the aluminum-based secondary battery to activate in situ solid-electrolyte interphase layers.

公开(公告)号：US20240105938A1

公开(公告)日：2024-03-28

申请号：US18189220

申请日：2023-03-24

Applicant: SK ON CO., LTD.

Inventor： Min Suk KANG ,  Ji Yae DO ,  Min Cheol BEAK ,  Sang Wook LEE ,  Yong Hyun CHO

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

CPC classification number: H01M4/5825 ,  H01M4/364 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/028

Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present disclosure includes first lithium metal phosphate particles, each first lithium metal phosphate particle having a secondary particle shape formed by aggregation of primary particles and having an average particle diameter (D50) in a range from 5 μm to 10 μm, second lithium metal phosphate particles, each having a single particle and having an average particle diameter in a range from 1 μm to 3 μm, and third lithium metal phosphate particles, each having a single particle shape and having an average particle diameter less than 1 μm.