公开(公告)号：US20250070158A1

公开(公告)日：2025-02-27

申请号：US18946591

申请日：2024-11-13

Applicant: Nichia Corporation

Inventor： Kenichi KOBAYASHI

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525

Abstract: A method of producing a positive electrode active material for a nonaqueous electrolyte secondary battery, the method includes preparing nickel-containing composite oxide particles having a ratio 1D90/1D10 of a 90% particle size 1D90 to a 10% particle size 1D10 in volume-based cumulative particle size distribution of 3 or less; obtaining a raw material mixture containing the composite oxide particles and a lithium compound and having a ratio of a total number of moles of lithium to a total number of moles of metal elements contained in the composite oxide in a range of 1 to 1.3; subjecting the raw material mixture to a heat treatment to obtain a heat-treated material; subjecting the heat-treated material to a dry-dispersion treatment to obtain a first dispersion; and bringing the first dispersion into contact with a liquid medium to obtain a second dispersion.

公开(公告)号：US20250070136A1

公开(公告)日：2025-02-27

申请号：US18814098

申请日：2024-08-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Byungwuk KANG ,  Sungwook DOO ,  Young-Ki KIM ,  Sung Ho CHOO ,  Dowook JUN ,  Gwiwoon KANG ,  Jaeyong JEONG ,  Youngsun KONG ,  Seok Mun KANG ,  Jaesang YOON

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/525 ,  H01M10/0525

Abstract: A positive electrode active material includes a core particle including a layered lithium nickel-manganese-based composite oxide, a first coating layer provided on the surface of the core particle and including Al, and a second coating layer provided on the first coating layer and including Ni. A method for preparing a positive electrode active material includes: mixing a layered nickel-manganese composite hydroxide and a lithium raw material and performing a first heat treatment to obtain a lithium nickel-manganese-based composite oxide, adding an aluminum (Al) raw material to an aqueous solvent, adding the lithium nickel-manganese composite oxide thereto and mixing them, then adding a nickel (Ni) raw material and mixing them, and drying the mixture and performing a second heat treatment.

公开(公告)号：US12237474B2

公开(公告)日：2025-02-25

申请号：US16978520

申请日：2019-03-05

Applicant: MetaGenesis, Ltd.

Inventor： Yang Jin ,  Kai Liu ,  Jialiang Lang

IPC: H01M10/39 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/75 ,  H01M10/0525 ,  H01M10/0562

Abstract: Molten lithium electrochemical cells are disclosed. A solid electrolyte separates a molten lithium metal or molten lithium metal alloy from a cathode. The molten lithium cells provide high Coulombic efficiency and energy efficiency at operating temperatures less than 600° C. The cells are useful for stationary energy storage in power grids.

公开(公告)号：US12234158B2

公开(公告)日：2025-02-25

申请号：US17043610

申请日：2019-05-21

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang ,  Huijie Guo ,  Jianzhao Liu

IPC: C01G53/00 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/525 ,  H01M4/02

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.

公开(公告)号：US20250062414A1

公开(公告)日：2025-02-20

申请号：US18803025

申请日：2024-08-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kunihiro INUI ,  Jinseok BAEK ,  Takayoshi FUJITA

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/42

Abstract: According to various examples, by including a sufficient amount of a flame retardant component in addition to metal hydroxide, an increase in the internal temperature of the battery may be reduced or suppressed, and deterioration of the cycle characteristics of the battery may be reduced or suppressed. The flame retardant component includes a phosphorus element, a phosphorus element and a boron element, or a phosphorus element and a bromine element, and a content of phosphorus element, a sum of the contents of a phosphorus element and a boron element or a sum of the contents of a phosphorus element and a bromine element is greater than or equal to about 18 wt % and less than or equal to about 30 wt % based on 100 wt % of the composite particles for non-aqueous electrolyte rechargeable battery.

公开(公告)号：US20250062341A1

公开(公告)日：2025-02-20

申请号：US18940387

申请日：2024-11-07

Applicant: Ascend Elements, Inc.

Inventor： Bohang Song ,  Eric Gratz ,  Yadong Liu ,  Dhiren Mistry ,  Jiyong Shin ,  Martha Monzon

IPC: H01M4/525 ,  B09B3/70 ,  B09B3/80 ,  B09B101/16 ,  C01G53/00 ,  C30B29/22 ,  H01M4/02 ,  H01M4/505

Abstract: In a battery recycling process, a recycling stream including charge material metals from exhausted Li-ion batteries is aggregated or otherwise comminuted to generate recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in both a coprecipitation phase and a sintering phase of the recycling sequence. Prior to coprecipitation of a cathode material precursor, a leach solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a first dopant is added. The doped precursor, a lithium salt, and a second dopant are combined and sintered to form a doped cathode material having a single crystal morphology and a higher tap density than the doped cathode precursor.

公开(公告)号：US20250062340A1

公开(公告)日：2025-02-20

申请号：US18934497

申请日：2024-11-01

Applicant: ECOPRO BM CO., LTD.

Inventor： Moon Ho CHOI ,  Hyun Jong YU ,  Chang Woo LEE ,  Yu Kyung CHUN

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525

Abstract: The present invention relates to a lithium composite oxide having improved stability and electrical characteristics as a positive electrode material by inhibiting an interfacial side reaction in the lithium composite oxide and improving the stability of a crystal structure and ion conductivity, and a lithium secondary battery including the same.

公开(公告)号：US20250062339A1

公开(公告)日：2025-02-20

申请号：US18723235

申请日：2022-12-14

Applicant: SYENSQO SA

Inventor： Marc-David Braida ,  Jong-Hyun Lee ,  Hyun-Cheol Lee ,  Ji-Hye Won

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

Abstract: The present invention pertains to a lithium secondary battery comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material and a liquid electrolyte comprising at least one fluorinated acyclic carboxylic acid ester. The present invention also relates to use of a liquid electrolyte comprising at least one fluorinated acyclic carboxylic acid ester in a lithium secondary battery, for improving the cycling performance, comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material according to the present invention.

公开(公告)号：US20250062324A1

公开(公告)日：2025-02-20

申请号：US18721464

申请日：2023-01-16

Applicant: BASF SE

Inventor： Ryosuke TAKEUCHI ,  Kathrin MICHEL

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42

Abstract: Disclosed herein is a process for the manufacture of coated cathode active materials including the steps of: (a) providing a particulate electrode active material based on a lithiated oxide according to general formula Li1+xTM1−xO2 and x is in the range of from zero to 0.2, (b) treating said particulate electrode active material with water, and subsequently removing the majority of the water by a solid-liquid separation method, thereby obtaining a solid residue, (c) treating the solid residue material from step (b) with a source of boron and with at least one compound of Mg, Ca, Sr, Ba, and Zn selected from the respective sulfates, oxides, and hydroxides, thereby obtaining an intermediate, and (d) treating the intermediate obtained from step (c) thermally.

公开(公告)号：US20250062320A1

公开(公告)日：2025-02-20

申请号：US18480632

申请日：2023-10-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong Lu ,  Zhe Li ,  Qili Su ,  Haijing Liu

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1395 ,  H01M4/1397 ,  H01M4/38 ,  H01M4/525 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058

Abstract: A solid state battery cell includes an anode, a cathode, and a solid state electrolyte disposed between the anode and the cathode. The anode is a lithium metal composite anode that comprises a lithium metal layer and a metal sulfide. A method of manufacturing a battery cell includes disposing a lithium metal composite anode on an anode current collector, where the lithium metal composite anode comprises a lithium metal layer and a metal sulfide. A solid state electrolyte is then disposed on the lithium metal composite anode. A cathode active layer is disposed on the solid state electrolyte and a cathode current collector is disposed on the cathode active layer.