Patents Examined by Zhongqing Wei
  • Patent number: 11967705
    Abstract: An anode active material for a lithium secondary battery includes a carbon-based particle including pores therein, a silicon-containing coating layer formed at an inside the pores of the carbon-based particle or on a surface of the carbon-based particle, and a carbon coating layer formed on the silicon-containing coating layer. A full width at half maximum (FWHM) of an O1s peak of a surface measured by an X-ray photoelectron spectroscopy (XPS) is 2.0 or more. A lithium secondary battery including the anode active material having improved initial discharge capacity and capacity efficiency is provided.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 23, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Gwi Ok Park, Seok Keun Yoo, Dong Il Jang, Ju Ho Chung
  • Patent number: 11961993
    Abstract: This application relates to a secondary battery and an apparatus including the secondary battery. Specifically, the secondary battery of this application includes a negative electrode plate, where the negative electrode plate includes a negative current collector and negative film layers where the negative film layers include a first negative film layer and a second negative film layer, the first negative film layer is disposed on at least one surface of the negative current collector and includes a first negative active material, and the second negative film layer is disposed on the first negative film layer and includes a second negative active material; the first negative active material includes natural graphite, and the second negative active material includes artificial graphite; the first negative active material satisfies 4.0?COI1?7.0; and the second negative active material satisfies 2.2?COI2?4.2.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 16, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Meng Kang, Xiaobin Dong, Jiazheng Wang, Libing He
  • Patent number: 11942645
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 26, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akihiko Takada, Masanori Sugimori, Nobuhiro Hirano, Yuki Morikawa, Yasunori Baba, Katsunori Yanagida
  • Patent number: 11942656
    Abstract: New, improved or optimized battery separators, components, batteries, industrial batteries, inverter batteries, batteries for heavy or light industrial applications, forklift batteries, float charged batteries, inverters, accumulators, systems, methods, profiles, additives, compositions, composites, mixes, coatings, and/or related methods of water retention, water loss prevention, improved charge acceptance, production, use, and/or combinations thereof are provided or disclosed. More particularly, the present invention is directed to one or more improved battery separators having various improvements that may result in decreased water loss for a battery in which such a separator is incorporated, enhanced charge acceptance, or combinations thereof.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: March 26, 2024
    Assignee: Daramic, LLC
    Inventors: Surendra K. Mittal, Jeffrey K. Chambers, Jörg Deiters
  • Patent number: 11936034
    Abstract: A negative electrode active substance particle according to one embodiment of the present invention, comprises a mother particle that has: a silicate phase that includes Na, Si, and at least one element selected from M, M1, M2, M3 and M4 (M is an alkali earth metal, and M1, M2, M3 and M4 are elements other than alkali metals, alkali earth metals or Si); and silicon particles dispersed in the silicate phase. The contents of the elements in the silicate phase are: 9-52 mol % of Na; 3-50 mol % of M, M1, M2, M3 and M4; and at least 25 mol % of Si.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira
  • Patent number: 11929486
    Abstract: Composite electrodes are described herein, comprising a stainless steel substrate and silicon-containing nanostructures extending from the substrate, as well as processes for preparing such electrodes without requiring a catalyst by pre-treatment of the steel. At least a portion of the silicon-containing nanostructures are characterized by: being substantially devoid of a non-silicon catalyst material and/or a noble metal; and/or including along its length a metal constituent originating from the steel substrate; and/or including a metal silicide extending from the substrate and along at least a portion of its length; and/or being fused with at least one other silicon-containing nanostructure at a location removed from a surface of the substrate to form a sponge-like three-dimensional structure; and/or being stainless steel nanostructures having a layer of silicon disposed thereon.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: March 12, 2024
    Assignee: Technology Innovation Momentum Fund (Israel) Limited Partnership
    Inventors: Fernando Patolsky, Guy Davidy, Nimrod Harpak
  • Patent number: 11929504
    Abstract: Vertically aligned carbon nanotubes (VACNTs) (e.g., multi-walled VACNTs and methods of synthesizing the same are provided. VACNTs can be synthesized on nickel foam (Ni—F), for example by using a plasma-enhanced chemical vapor deposition (PECVD) technique. A wet chemical method can then be used to coat on the VACNTs a layer of nanoparticles, such as tin oxide (SnO2) nanoparticles.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: March 12, 2024
    Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
    Inventors: Wenzhi Li, Arun Thapa
  • Patent number: 11923537
    Abstract: The present application discloses a negative electrode plate including a negative electrode active material layer including a first active material layer; wherein in a first cross section in a thickness direction of the negative electrode plate, the first active material has a size a in a direction parallel to the metal conductive layer, the first active material has a size b in the thickness direction, satisfying 0.8?a/b?20; in a second cross section in the thickness direction of the negative electrode plate, the first active material has a size c in the direction parallel to the metal conductive layer, the first active material has a size d in the thickness direction, satisfying 0.8?c/d?20; and the first cross section is parallel to a first direction, the second cross section is parallel to a second direction, and the first direction intersects the second direction.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: March 5, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Jing Li, Yang Zhang, Qingrui Xue, Wei Li
  • Patent number: 11916185
    Abstract: A lithium iron phosphate electrochemically active material for use in an electrode and methods and systems related thereto are disclosed. In one example, a lithium iron phosphate electrochemically active material for use in an electrode is provided including, a dopant comprising vanadium and optionally a co-dopant comprising cobalt.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: February 27, 2024
    Assignee: A123 SYSTEMS LLC
    Inventors: Chuanjing Xu, Maha Hammoud, Judith M. LaForest, Hyojin Lee, Derek Johnson
  • Patent number: 11894551
    Abstract: A main object of the present disclosure is to provide an active material wherein a volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material comprising at least Si and Al, including a silicon clathrate type crystal phase, and a proportion of the Al to a total of the Si and the Al is 0.1 atm % or more and 1 atm % or less.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: February 6, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhiro Suzuki, Jun Yoshida
  • Patent number: 11876192
    Abstract: An assembled battery monitoring apparatus includes a plurality of monitoring circuits and a control circuit that transmits a command to the plurality of monitoring circuits at each of cycles. In response to receiving a communication interruption command including a value data, one of the plurality of monitoring circuits is configured to apply a calculation process on the value data included in the received communication interruption command to obtain an updated value data, and transmit a communication interruption command including the updated value data to a downstream side in the daisy chain connection up to the control circuit. In response to thereafter receiving a communication interruption command including a value data, the control circuit is configured to identify a location where a communication interruption occurs based on the received value data included in the received communication interruption command.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: January 16, 2024
    Assignee: DENSO CORPORATION
    Inventor: Takahito Hayakawa
  • Patent number: 11876168
    Abstract: Composites comprising anode and cathode active materials conformally coupled to few-layered graphene, corresponding electrodes and related methods of preparation.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: January 16, 2024
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mark C. Hersam, Kan-Sheng Chen, Ethan B. Secor
  • Patent number: 11876220
    Abstract: A silicon-based anode material for secondary batteries, a preparation method thereof and a secondary battery are provided. The silicon-based anode material includes: an inner core including an Si particle and silicon oxide SiOx1, where 0<x1<2, a first shell layer including a compound of the general formula MySiOz (0<y?4, 0<z?5, and z?x1) and a C particle, wherein the first shell layer covers the inner core, and the contents of M and C in the first shell layer gradually increase from a side thereof close to the inner core to another side thereof far away from the inner core; and a second shell layer including a carbon film layer or a composite film layer formed by a carbon film layer and a conductive additive, the second shell layer covers the first shell layer. The first charge-discharge cycle capability of the silicon-based anode material is improved, and the manufacturing cost is reduced.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: January 16, 2024
    Assignee: SHANGHAI SHANSHAN TECH CO., LTD.
    Inventors: Yuhu Wu, Fei Ma, Dongdong Liu, Liangqin Wei, Zhihong Wu, Xiaoyang Ding, Fengfeng Li
  • Patent number: 11862787
    Abstract: The present invention relates to a negative electrode active material for a lithium-ion battery, containing a Si phase, a Si—Zr compound phase, and a Sn—X compound phase in which X is at least one element selected from the group consisting of Cu, Ti, Co, Fe, Ni, and Zr, the Sn—X compound phase has a proportion of 0.1 mass % to 18 mass % to the whole, and the Si phase has a proportion of 10 mass % to 80 mass % to the whole.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: January 2, 2024
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Yuta Kimura, Hiroyuki Miyamoto
  • Patent number: 11848437
    Abstract: A negative electrode including: a negative electrode current collector; and a negative electrode active material layer on at least one surface of the negative electrode current collector. The negative electrode is pre-lithiated and the negative electrode active material layer includes a silicon-based material and a carbonaceous material. In addition, a graphene sheet having 2 layers to 15 layers is on the negative electrode active material layer. The negative electrode is advantageous in terms of storage and safety. A lithium secondary battery using the negative electrode shows reduced initial irreversibility, and thus provides increased efficiency.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 19, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Sun-Young Shin, Jun-Hyuk Song, Yong-Ju Lee, Je-Young Kim
  • Patent number: 11848449
    Abstract: An electrode active layer is disclosed that includes a network of high aspect ratio carbon elements (e.g., carbon nanotubes, carbon nanotube bundles, graphene flakes, or the like) that provides a highly electrically conductive scaffold that entangles or enmeshes the active material, thereby supporting the layer. A surface treatment can be applied to the high aspect ratio carbon elements to promote adhesion to the active material and any underlying electrode layers improving the overall cohesion and mechanical stability of the active layer. This surface treatment forms only a thin (in some cases even monomolecular) layer on the network, leaving the large void spaces that are free of any bulk binder material and so may instead be filled with active material. The resulting active layer may be formed with excellent mechanical stability even at large thickness and high active material mass loading.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: December 19, 2023
    Assignee: FASTCAP SYSTEMS CORPORATION
    Inventors: Nicolo Brambilla, Jin Yan, Ki T. Park, Ting Du, Xujie Chen, Wanjun Ben Cao
  • Patent number: 11837731
    Abstract: A positive electrode active material for a lithium secondary battery, including a sulfur-carbon composite and a coating layer located on a surface of the sulfur-carbon composite and including a carbon nanostructure and iron oxyhydroxynitrate.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: December 5, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Suenghoon Han, Eui Tae Kim
  • Patent number: 11831007
    Abstract: A Si-based negative electrode active material that is capable of improving cycle characteristics, reducing or eliminating a plateau region in the discharge profile, and further improving high-rate characteristics. The Si-based negative electrode active material contains Si and a compound containing Si and a semimetal/metal element M, wherein the content of Si in the negative electrode active material is more than 50 wt %; the content of oxygen atoms (O) is less than 30 wt %; the content of the semimetal/metal element M is more than 10 wt % and less than 50 wt %, wherein in an X-ray diffraction pattern as measured by a powder X-ray diffraction (XRD) device using Cu-K?1 rays, the full width at half maximum of the peak of the (111) plane of Si is 0.25° or more; and wherein the peak intensity of the peak of the (111) plane of Si is less than 20,000 cps; and the true density is 2.5 g/cm3 or more.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 28, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventor: Tetsuya Mitsumoto
  • Patent number: 11824188
    Abstract: A positive electrode active material for an all-solid-state lithium secondary battery, which is capable of improving the rate characteristics, the cycle characteristics, and the initial charge and discharge efficiency even in the case where a sulfide-based solid electrolyte is used, wherein the surface of a lithium-containing composite oxide, referred to as present core particles, is coated with a compound, referred to as, LiAO compound, containing Li, A, where A represents one or more elements selected from the group consisting of Ti, Zr, Ta, Nb, Zn, W, and Al, and O; and a halogen is present on the surface of the present core particles.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 21, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Daisuke Washida, Hitohiko Ide
  • Patent number: 11824195
    Abstract: Provided is a negative electrode active material for a lithium secondary battery according to the present invention, including a carbon-based particle including pores in an inner portion and/or a surface thereof; and a silicon-based coating layer positioned on a pore surface and/or a pore-free surface of the carbon-based particle and containing silicon carbon compound.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: November 21, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Joon Sup Kim, Jee Hee Lee, Nam Hyeong Kim, Jae Kyung Sung, Tae Yong Lee, Jae Phil Cho