Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
Type:
Grant
Filed:
March 11, 2022
Date of Patent:
January 2, 2024
Assignee:
SK ON CO., LTD.
Inventors:
Gwi Ok Park, Seok Keun Yoo, Ju Ho Chung
Abstract: The present invention discloses a full-gradient nickel cobalt manganese positive electrode material, a ruthenium oxide coated material and a preparation method thereof. The material has a chemical formula of LiNixCoyMn(1-x-y)O2, wherein, 0.5?x?0.9, 0.05?y?0.40, 1-x-y>0. A content of the nickel element is gradually decreased from a core portion to an outer surface of the full-gradient nickel cobalt manganese positive electrode material. A content of the manganese element is gradually increased from the core portion to the outer surface of the full-gradient nickel cobalt manganese positive electrode material. And, a content of the cobalt element is uniformly distributed in the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the ruthenium oxide coated material.
Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.
Type:
Grant
Filed:
June 16, 2022
Date of Patent:
December 26, 2023
Assignee:
CAMX Power LLC
Inventors:
David Ofer, Jane Rempel, Suresh Sriramulu
Abstract: Provided are a composition for a lithium ion secondary battery separator containing: a liquid medium; and 40 mass % or less of a first compound including a function-displaying functional group and having a molecular weight of 50,000 or less, and having a surface tension of 15 mN/m to 30 mN/m, and a two-part composition for a lithium ion secondary battery separator including: a first liquid containing a first compound and first liquid medium; and a second liquid containing a second compound and second liquid medium, wherein the first compound includes a function-displaying functional group and has a molecular weight of 50,000 or less, the second compound is reactive with the first compound and has a molecular weight of 50,000 or less, and the first and second liquids each contain the corresponding compound in a proportion of 40 mass % or less and have a surface tension of 15 mN/m to 30 mN/m.
Abstract: A secondary electrochemical cell comprises an anode, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte comprises at least one salt dissolved in at least one organic solvent. The separator in combination with the electrolyte has an area-specific resistance of less than about 2 ohm-cm2.
Type:
Grant
Filed:
August 3, 2021
Date of Patent:
November 14, 2023
Assignee:
DURACELL U.S. OPERATIONS, INC.
Inventors:
Nikolai Nikolaevich Issaev, Alexander Kaplan, Junan Kao, Kirakodu Seetharama Nanjundaswamy, Michael Pozin, Fan Zhang
Abstract: A vent adapter for a lead-acid battery includes a first side configured to mate with a vent port of the lead-acid battery via a first connector having a first geometry; and a second side in fluid communication with the first side and configured to mate with a vent passage of an automobile via a second connector having a second geometry, wherein the first and second geometries have respective shapes that are different from one another.
Abstract: A lithium metal oxide suitable for use as a cathode material in a rechargeable battery having a general formula of: LixMzM?zOuFy, where x is 1.80<x<2.20, y=1, and more specifically 1.90<x<2.10, with 1.80<u<2.20. Preferably, 1.90<u<2.10, and 0.80<y<1.20, or more specifically, 0.90<y<1.10. The lithium metal oxide has a cation-disordered rocksalt structure, wherein M is a transition metal selected from a first group consisting of Ni, Mn, Co, Fe, and combinations thereof. M? is a transition metal selected from a second group consisting of Ti, Zr, Nb, Mo, Sn, Hf, Te, Sb, and combinations thereof. M has a first oxidation state q and M? has a second oxidation state q?, with (q/z)+(q?/z?)=+3, preferably +2.7?q/z)+(q?/z?)?+3.3.
Type:
Grant
Filed:
June 7, 2018
Date of Patent:
October 10, 2023
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Abstract: Core-shell nanostructures with platinum overlayers conformally coating palladium nano-substrate cores and facile solution-based methods for the preparation of such core-shell nanostructures are described herein. The obtained Pd@Pt core-shell nanocatalysts showed enhanced specific and mass activities towards oxygen reduction, compared to a commercial Pt/C catalyst.
Type:
Grant
Filed:
August 2, 2021
Date of Patent:
October 10, 2023
Assignee:
Georgia Tech Research Corporation
Inventors:
Younan Xia, Shuifen Xie, Sang-Il Choi, Xue Wang, Jinho Park, Lei Zhang
Abstract: Disclosed is a method of preparing a cathode active material useful in a sodium ion secondary battery having high reversible capacity and excellent cycle characteristics. The method for preparing a cathode active material composed of Zrw-doped NaxLiyMzOa includes the steps of (A) doping LiyMzOa with Zrw to provide Zrw-doped LiyMzOa; and (B) dissociating Li ion from the Zrw-doped LiyMzOa and inserting Na ion thereto to provide the Zrw-doped NaxLiyMzOa, wherein M is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Mo, Ru, and combinations thereof, and wherein 0.005<w<0.05, 0.8?x?0.85, 0.09?y?0.11, 7?x/y?10, 0.7?z?0.95, and 1.95?a?2.05. When the cathode active material is used for manufacturing a cathode for a sodium ion secondary battery, the battery can substitute for a conventional, expensive lithium ion secondary battery.
Type:
Grant
Filed:
December 23, 2019
Date of Patent:
October 3, 2023
Assignee:
Korea Institute of Science and Technology
Inventors:
Kyung Yoon Chung, Dong Hyun Kim, Juhyeon Ahn, Jaeho Park, Ji-Young Kim, Min Kyung Cho, Byung Won Cho, Hun-Gi Jung, Minah Lee, Seungho Yu, Hyungseok Kim
Abstract: A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 ?m to 10 ?m. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.
Abstract: Lithiated electrodes, electrochemical cells including lithiated electrodes, and methods of making the same are provided. The method includes lithiating at least one electrode in an electrochemical cell by applying current across a first current collector of the at least one electrode to a second current collector of an auxiliary electrode. The electrochemical cell may be disposed within a battery packaging and the auxiliary electrode may be disposed within the battery packaging adjacent to an edge of the electrochemical cell. The at least one electrode may include a first electroactive layer disposed on or near one or more surfaces of the first current collector, and the auxiliary electrode may include a second electroactive layer disposed at or near one or more surfaces of the second current collector. The method may further include extracting the auxiliary electrode from the battery packaging and sealing the battery packaging, which includes the pre-lithiated electrochemical cell.
Type:
Grant
Filed:
November 20, 2019
Date of Patent:
September 5, 2023
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventors:
Xingcheng Xiao, Xingyi Yang, Mark W. Verbrugge, Raghunathan K, Qinglin Zhang
Abstract: A binder for a secondary battery containing a fluorine-containing polymer (A) and polyvinylidene fluoride (B). The fluorine-containing polymer (A) contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation or an organic cation. Also disclosed is an electrode mixture and an electrode for a secondary battery including the binder, and a secondary battery including the electrode.
Abstract: Conducting coatings disposed on a metal member. The conducting coatings may have a desired texture and provide homoepitaxial or heteroepitaxial coating of an electrodeposited layer. A conducting coating may be formed by applying a shear force during deposition of the conducting coating. The conducting coatings may be used in anodes of various electrochemical devices. A conducting coating, which may be part of an electrochemical device, may have an electrochemically deposited layer disposed on at least a portion of a surface of the conducting coating. The electrochemically deposited layer may be reversibly electrochemically deposited.
Type:
Grant
Filed:
April 27, 2020
Date of Patent:
August 15, 2023
Assignee:
CORNELL UNIVERSITY
Inventors:
Lynden A. Archer, Jingxu Zheng, Tian Tang, Qing Zhao
Abstract: Disclosed is a battery module, as well as a battery pack and a vehicle comprising the same. The battery module includes a plurality of battery cells arranged side by side to face each other in at least one direction, a cooling plate located below the plurality of battery cells, and a heat transfer tape adhered to the battery cells to transfer heat of the battery cells to the cooling plate.
Type:
Grant
Filed:
February 10, 2021
Date of Patent:
August 15, 2023
Assignee:
LG Energy Solution, Ltd.
Inventors:
Mi-Geum Choi, Dal-Mo Kang, Jeong-O Mun, Yoon-Koo Lee
Abstract: An electrode for a rechargeable lithium battery includes a current collector and an active material layer on the current collector, wherein the active material layer includes flake-shaped polyethylene particles, and the flake-shaped polyethylene particles have an average particle size (D50) of about 1 ?m to about 8 ?m. A rechargeable lithium battery includes the electrode including the flake-shaped polyethylene particles.
Type:
Grant
Filed:
July 2, 2019
Date of Patent:
August 15, 2023
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Jaehwan Ha, Kijun Kim, Heeeun Yoo, Yeonhee Yoon, Kyuseo Lee
Abstract: The present invention provides a nanoporous carbon composite (NCC) for use as an electrode material. NCC comprises active electrode material, one or more additives in a form of particles or fibers, and a nanoporous carbon phase that binds pieces of the active electrode material and pieces of the additive with each other. The nanoporous carbon phase is derived from a polyimide precipitate prepared from imidization of a poly(amic acid) solution. NCC further comprises micro-cracks distributed throughout the NCC to build a three-dimensional (3D) network, wherein the micro-crack is bounded in one or more parts by a surface of the active electrode material or the additive.
Abstract: A rechargeable battery that minimizes a current amount difference between a double-sided coated region and a single-sided coated region by increasing resistance of the single-sided coated region to be higher than that of the double-sided coated region in an electrode plate (e.g., a negative electrode plate). A rechargeable battery including: an electrode assembly including an electrode plate at opposite sides of a separator and spirally winding the separator and the electrode plates; and a pouch to accommodate the electrode assembly therein and to draw out an electrode tab connected to the electrode plates to the outside thereof. The electrode plate includes: a double-sided coated region having an active material on opposite sides of a substrate and a single-sided coated region having an active material on a single surface of the substrate, wherein resistance of the single-sided coated region is higher than that of the double-sided coated region.
Type:
Grant
Filed:
December 8, 2017
Date of Patent:
August 8, 2023
Assignee:
SAMSUNG SDI CO., LTD.
Inventors:
Donghyuk Chang, Bokhyun Ka, Kyeuyoon Sheem, Jinhyon Lee
Abstract: Disclosed is a battery module, which includes: a cell holder having a plurality of battery cell insertion portions and at least one fire extinguishing cell insertion portion; a plurality of battery cells respectively located in the battery cell insertion portions; and at least one fire extinguishing cell located in the fire extinguishing cell insertion portion.
Abstract: A process for recovering a nickel cobalt manganese hydroxide from recycled lithium-ion battery (LIB) material such as black mass, black powder, filter cake, or the like. The recycled LIB material is mixed with water and either sulfuric acid or hydrochloric acid at a pH less than 2. Cobalt, nickel, and manganese oxides from the recycled lithium-ion battery material dissolve into the acidic water with the reductive assistance of gaseous sulfur dioxide. Anode carbon is filtered from the acidic water, leaving the dissolved cobalt, nickel, and manganese oxides in a filtrate. The filtrate is mixed with aqueous sodium hydroxide at a pH greater than 8. Nickel cobalt manganese hydroxide precipitates from the filtrate. The nickel cobalt manganese hydroxide is filtered from the filtrate and dried. The filtrate may be treated ammonium fluoride or ammonium bifluoride to precipitate lithium fluoride from the filtrate.
Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery according to a configuration includes a lithium-transition metal composite oxide containing nickel (Ni) in an amount of greater than or equal to 80 mol %, in which boron (B) is present at least on a particle surface of the lithium-transition metal composite oxide. In the lithium-transition metal composite oxide, when particles having a larger particle size than a volume-based 70% particle size (D70) are first particles and particles having a smaller particle size than a volume-based 30% particle size (D30) are second particles, a coverage ratio of B on surfaces of the second particle is larger than a coverage ratio of B on surfaces of the first particle by 5% or greater.
Type:
Grant
Filed:
October 27, 2020
Date of Patent:
July 4, 2023
Assignees:
PANASONIC HOLDINGS CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA