Iron Component Is Active Material Patents (Class 429/221)
  • Patent number: 10930935
    Abstract: Disclosed are a cathode additive of a lithium secondary battery which may have improved crystallinity and a method for preparing the same. The cathode additive may be provided to suppress generation of oxygen gas or gelation of an electrode slurry composition, which may occur due to reduction in the content of residual by-products containing lithium oxide.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: February 23, 2021
    Inventors: Hyelim Jeon, Donghun Lee, Sang wook Lee, Seul Ki Kim, Eunsol Lho, Wang Mo Jung
  • Patent number: 10923709
    Abstract: The disclosure describes an exemplary binding layer formed on Aluminum (Al) substrate that binds the substrate with a coated material. Additionally, an extended form of the binding layer is described. By making a solution containing Al-transition metal elements-P—O, the solution can be used in slurry making (the slurry contains active materials) in certain embodiments. The slurry can be coated on Al substrate followed by heat treatment to form a novel electrode. Alternatively, in certain embodiments, the solution containing Al-transition metal elements-P—O can be mixed with active material powder, after heat treatment, to form new powder particles bound by the binder.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: February 16, 2021
    Assignee: Changs Ascending Enterprise, Co., Ltd.
    Inventors: Chun-Chieh Chang, Tsun Yu Chang
  • Patent number: 10916799
    Abstract: A positive electrode material for a secondary battery, includes: a composition represented by Li4+xFe4+y(P2O7)3 (?0.80?x?0.60, ?0.30?y?0.40, and ?0.30?x+y?0.30); and tungsten, wherein the positive electrode material has a triclinic crystal structure.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: February 9, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Tomochika Kurita, Jiyunichi Iwata
  • Patent number: 10897044
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention is active material particles including central particles represented by General Formula LixAyDzPO4 (0.9<x<1.1, 0<y?1, 0?z<1, and 0.9<y+z<1.1; here, A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, and D represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y) and a carbonaceous film that coats surfaces of the central particles, in which a coarse particle ratio in a particle size distribution is 35% or more and 65% or less.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Ryuuta Yamaya, Masataka Oyama
  • Patent number: 10896784
    Abstract: Provided is a method of producing graphene directly from a non-intercalated and non-oxidized graphitic material, comprising: (a) dispersing the graphitic material in a liquid solution to form a suspension, wherein the graphitic material has never been previously exposed to chemical intercalation or oxidation; and (b) subjecting the suspension to microwave or radio frequency irradiation with a frequency and an intensity for a length of time sufficient for producing graphene; wherein the liquid solution contains a metal salt dissolved in water, organic solvent, ionic liquid solvent, or a combination thereof. The method is fast (minutes as opposed to hours or days of conventional processes), environmentally benign, and highly scalable.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 19, 2021
    Assignee: Global Graphene Group, Inc.
    Inventors: Yi-Jun Lin, Aruna Zhamu, Bor Z. Jang
  • Patent number: 10868305
    Abstract: A composite cathode active material includes a first cathode active material including a core including a first lithium transition metal oxide represented by Formula 1 and having a first layered crystalline phase that belongs to a R-3m space group; and a coating layer disposed on the core and including a second lithium transition metal oxide having a plurality of layered crystalline phases, wherein each layered crystalline phase of the plurality of layered crystalline phases has a different composition: LiaMO2??Formula 1 wherein, in Formula 1, 1.0?a?1.03; and M includes nickel and an element including a Group 4 element to a Group 13 element other than nickel.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: December 15, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Byungjin Choi, Byongyong Yu, Jinhwan Park, Jayhyok Song
  • Patent number: 10862113
    Abstract: A positive active material including: a core comprising a metal oxide, a non-metal oxide, or a combination thereof capable of intercalation and deintercalation of lithium ions or sodium ions; and a non-conductive carbonaceous film including oxygen on at least one portion of a surface of the core; a lithium battery including the positive active material; and a method of manufacturing the positive active material.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwangjin Park, Jaegu Yoon, Jeongkuk Shon, Minsang Song, Jaejun Chang, Sangmin Ji, Jaeman Choi, Dongjin Ham
  • Patent number: 10854876
    Abstract: A positive-electrode active material contains a compound represented by the following composition formula (1): LixMeyO?X???(1) where Me denotes one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, X denotes two or more elements selected from the group consisting of F, Cl, Br, I, N, and S, and x, y, ?, and ? satisfy 0.75?x?2.25, 0.75?y?1.50, 1??<3, and 0<??2, respectively. A crystal structure of the compound belongs to a space group Fm-3m.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: December 1, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Issei Ikeuchi, Ryuichi Natsui, Kensuke Nakura
  • Patent number: 10811663
    Abstract: Methods and systems for welding a terminal of a battery cell to corresponding terminal tab or busbar are described using a magnet that causes the terminal and tab/busbar to be placed in physical contact. The terminal of a battery cell is aligned in contact with the tab/busbar by the force of a magnetic field. A welder, e.g., a laser welder, can then generate a laser weld beam to weld the terminal of the battery cell to the tab/busbar. Next, the laser weld beam is narrowed, reducing the first diameter to a smaller second diameter. Without touching the tab/busbar or terminal of the battery (which could affect the welding operation), the magnetic field can cause a force that brings the tab and terminal in contact during welding.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: October 20, 2020
    Assignee: NIO USA, Inc.
    Inventors: Austin L. Newman, Alexander J. Smith
  • Patent number: 10804527
    Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery including the same. More specifically, the positive active material for a rechargeable lithium battery is a compound having an orthorhombic layered structure represented by the following Chemical Formula 1 or a compound represented by the following Chemical Formula 2, a method for producing the same, and a rechargeable lithium battery including the same. Li1+xMyO2+z??[Chemical Formula 1] {m(Li1+xMyO2+z)}.{1-m(LiMO2)}??[Chemical Formula 2] Wherein, in the above Chemical Formula 1 or Chemical Formula 2, M is one or more elements selected from the group consisting of Mn, Co, Ni, Al, Ti, Mo, V, Cr, Fe, Cu, Zr, Nb, and Ga, 0.7?x?1.2, 0.8?y?1.2, ?0.2?z?0.2, and 0<m?1.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 13, 2020
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jin-Myoung Lim, Duho Kim, Maenghyo Cho, Kyeong-jae Cho
  • Patent number: 10752504
    Abstract: The present invention relates to a method for preparing a lithium metal phosphor oxide, the method including: mixing an iron salt solution and a phosphate solution in a reactor; applying a shearing force to the mixed solution in the reactor during the mixing to form a suspension containing nano-sized iron phosphate precipitate particles; obtaining the nano-sized iron phosphate particles from the suspension; and mixing the iron phosphate with a lithium raw material and performing firing, and the lithium metal phosphor oxide according to the present invention has an Equation of LiMnFePO4. Herein, M is selected from the group consisting of Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, and Mg, and n is in a range of 0 to 1.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: August 25, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Hyun A Song, Dong Gyu Chang, Woo Young Yang
  • Patent number: 10741837
    Abstract: A positive electroactive material for a lithium-ion battery can have a tap density ranging from 2.50 to 2.90 g/cm3, a Span value ranging from 1.04 to 1.68 and/or a capacity ranging from 195 to 210 mAh/g obtained using a discharging current of C/5 current rate. The material can have a formula Lia[NixMnyCo1?x?y]zM1?zO2, wherein a is between approximately 1.02 and 1.07, x is between approximately 0.60 to 0.82, y is between approximately 0.09 to 0.20, z is between approximately 0.95 to 1.0, and 1?x?y is greater than 0. A cost-effective and large-scale synthetic method for preparing the positive electroactive material, an electrochemical cell containing the positive electroactive material, and a battery comprising one or more lithium ion electrochemical cells are also described.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: August 11, 2020
    Assignee: Lionano Inc.
    Inventors: Dong Ren, Yun Shen, Yingchao Yu
  • Patent number: 10707492
    Abstract: The invention relates to an electrode formed by the blending of dry active powdery electrode forming materials with an aqueous binder dispersion, and the subsequent adhering of the wet binder/dry active powdery electrode-forming materials blend to an electroconductive substrate, resulting in an electrode. The aqueous binder is preferably a fluoropolymer, and more preferably polyvinylidene fluoride (PVDF). The hybrid process provides the good dispersion and small particle size of a wet process, with the energy savings and reduced environmental impact of a dry process. The resulting electrode is useful in energy-storage devices.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: July 7, 2020
    Assignee: Arkema Inc
    Inventors: Ramin Amin-Sanayei, Jason Pomante, Wensheng He
  • Patent number: 10700333
    Abstract: The present invention relates to a separator for a secondary battery and a lithium secondary battery comprising the same, wherein the separator comprises a porous substrate and a heat-resistant porous layer positioned on at least one surface of the porous substrate, the heat-resistant porous layer comprising a first binder, a second binder, and a filler, the first binder comprising a copolymer having: a first structural unit derived from a first fluorine monomer; a second structural unit derived from a second fluorine monomer; and a third structural unit derived from a monomer comprising at least one functional group selected from a hydroxyl group, a carboxyl group, an ester group, an acid anhydride group, and a derivative thereof, the second binder comprising at least one of a vinylidene fluoride homopolymer and a vinylidene fluoride copolymer.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 30, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyeonsun Choi, Keewook Kim, Jinkyu Park
  • Patent number: 10689537
    Abstract: A method of forming a graphene-based material includes: (1) treating a mixture including an etchant and graphene oxide sheets to yield formation of holey graphene oxide sheets; (2) dispersing the holey graphene oxide sheets in a re-dispersal solvent to yield a holey graphene oxide dispersion including the holey graphene oxide sheets; and (3) treating the holey graphene oxide dispersion under reducing conditions to yield self-assembly of the holey graphene oxide sheets into a graphene-based material.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: June 23, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Xiangfeng Duan, Yuxi Xu, Yu Huang
  • Patent number: 10651466
    Abstract: According to one embodiment, there is provided an active material. The active material includes a composite oxide having an orthorhombic structure. The composite oxide is represented by the general formula Ti2(Nb1-xTax)2O9 (0?x?1). The composite oxide has an average valence of niobium and/or tantalum of 4.95 or more.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: May 12, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro Harada, Kazuomi Yoshima, Norio Takami, Hiroki Inagaki
  • Patent number: 10637047
    Abstract: A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The positive active material includes a lithium intercalation compound and a Si-containing TiO2 present on the surface of the compound. When TiO2 is present on the surface of the lithium intercalation compound, the rate characteristics and low temperature characteristics of batteries including the lithium intercalation compound may be improved. Further, when Si-containing TiO2 is present on the surface of the lithium intercalation compound, the cycle-life characteristic and high temperature storage characteristics of batteries including the lithium intercalation compound may be further improved, compared to batteries having only TiO2. As such, the positive active material including Si-containing TiO2 provides a rechargeable lithium battery having excellent rate capability, low temperature characteristics, cycle-life characteristics and high temperature storage characteristics.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: April 28, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jihyun Kim, Changwook Kim, Sooyoun Park, Kyouyoon Sheem, Hyunjoo Je
  • Patent number: 10637041
    Abstract: Provided is a Ni—Fe battery comprising an iron electrode which is preconditioned prior to any charge-discharge cycle. The preconditioned iron electrode used in the Ni—Fe battery is prepared by first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with an oxidant to thereby create an oxidized surface.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 28, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene Ogg, Michael Roders, Michael Meese
  • Patent number: 10629899
    Abstract: Provided is a method of producing multiple anode particulates, comprising: a) dispersing an electrically conducting material, primary particles of an anode active material, an optional electron-conducting material, and a sacrificial material in a liquid medium to form a precursor mixture; b) forming the precursor mixture into droplets and drying the droplets; and c) removing the sacrificial material or thermally converting the sacrificial material into a carbon material to obtain multiple particulates, wherein a particulate comprises one or a plurality of anode active material particles having a volume Va, an electron-conducting material, and pores having a volume Vp which are encapsulated by a thin encapsulating layer having a thickness from 1 nm to 10 ?m and a lithium ion conductivity from 10?8 S/cm to 5×10?2 S/cm and the volume ratio Vp/Va in the particulate is from 0.3/1.0 to 5.0/1.0.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: April 21, 2020
    Assignee: Global Graphene Group, Inc.
    Inventor: Bor Z. Jang
  • Patent number: 10626264
    Abstract: The present invention addresses the problem of providing an electrically conductive composition which can be used for producing an electric storage device such as a non-aqueous electrolyte secondary battery (e.g., a lithium ion secondary battery) having excellent electric conductivity during an ordinary operation and therefore having excellent battery output properties and the like and also having a function of increasing internal resistance when the internal temperature of the battery is increased, and which enables the production of an electric storage device such as a non-aqueous electrolyte secondary battery having excellent electric conductivity and safety-related functions.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: April 21, 2020
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Hirotomo Ito, Yasuyuki Moroishi, Junko Kawahara
  • Patent number: 10622627
    Abstract: In an example of a method for making a sulfur-based positive electrode active material, a carbon layer is formed on a sacrificial nanomaterial. The carbon layer is coated with titanium dioxide to form a titanium dioxide layer. The sacrificial nanomaterial is removed to form a hollow material including a hollow core surrounded by a carbon and titanium dioxide double shell. Sulfur is impregnated into the hollow core.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 14, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gayatri V. Dadheech, Xingcheng Xiao, Mei Cai
  • Patent number: 10608276
    Abstract: The present invention provides a novel carbon material comprising a three-dimensional graphene network constituting a plurality of cells interconnecting as a whole, where at least one of the cells has single-layer graphene wall. The carbon material is suitable for a lithium ion battery.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: March 31, 2020
    Assignee: NEC Corporation
    Inventors: Qian Cheng, Noriyuki Tamura, Kentaro Nakahara
  • Patent number: 10601019
    Abstract: An energy storage device including: an electrode assembly having a body portion and a first tab portion projecting from the body portion; and a container housing the electrode assembly, wherein a first current collector electrically connected to the first tab portion or the first tab portion, and the container have a swaged joint portion having a concavo-convex structure projecting toward the other side from one side.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: March 24, 2020
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Kazuto Maeda, Hirokazu Kambayashi, Shohei Yamao
  • Patent number: 10593950
    Abstract: A positive electrode for a lithium battery includes a lithium salt, a carbonaceous material, and a coating on a surface of the carbonaceous material, the coating including a polymer electrolyte including a hydrophilic material and a hydrophobic material, wherein a portion of the polymer electrolyte is anchored to the surface of the carbonaceous material by a chemical bond.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 17, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunpyo Lee, Taeyoung Kim, Dongjoon Lee, Heungchan Lee, Dongmin Im, Wonsung Choi
  • Patent number: 10593992
    Abstract: Provided are: a potassium ion secondary battery which is not susceptible to deterioration of charge/discharge capacity even if charging and discharging are repeated, and which has a long service life as a secondary battery; a potassium ion capacitor; a negative electrode for the potassium ion secondary battery; and a negative electrode for the potassium ion capacitor. A negative electrode for potassium ion secondary batteries and a negative electrode for potassium ion capacitors, each of which contains a carbon material that is capable of absorbing and desorbing potassium and a binder that contains a polycarboxylic acid and/or a salt thereof. A potassium ion secondary battery which is provided with the negative electrode or the capacitor. A binder for negative electrodes of potassium ion secondary batteries or negative electrodes of potassium ion capacitors, which contains a polycarboxylic acid and/or a salt thereof.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: March 17, 2020
    Assignee: TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Shinichi Komaba, Kei Kubota, Mouad Dahbi, Tatsuya Hasegawa
  • Patent number: 10581076
    Abstract: The present invention relates to a method for preparing a lithium iron phosphate nanopowder, including the steps of (a) preparing a mixture solution by adding a lithium precursor, an iron precursor and a phosphorus precursor in a glycerol solvent, and (b) putting the mixture solution into a reactor and heating to prepare the lithium iron phosphate nanopowder under pressure conditions of 10 bar to 100 bar, and a lithium iron phosphate nanopowder prepared by the method. When compared to a common hydrothermal synthesis method and a supercritical hydrothermal synthesis method, a reaction may be performed under a relatively lower pressure. When compared to a common glycothermal synthesis method, a lithium iron phosphate nanopowder having effectively controlled particle size and particle size distribution may be easily prepared.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: March 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: In Kook Jun, Seung Beom Cho, Myoung Hwan Oh
  • Patent number: 10573881
    Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery is used for a nonaqueous electrolyte secondary battery. The positive electrode active material includes a composite oxide containing at least lithium, nickel, and manganese and contains aggregated particles of primary particles having an average particle diameter of 1.0 ?m or more. The primary particles have a layered crystal structure and a spinel crystal structure.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: February 25, 2020
    Assignee: Panasonic Corporation
    Inventor: Hidekazu Hiratsuka
  • Patent number: 10573926
    Abstract: A hybrid solid state electrolyte (SSE) can include a plurality of SSE particles suspended in a salt-in-solvent (SIS). A battery can include the hybrid SSE. The battery can be formed by at least forming the hybrid SSE in situ. Forming the hybrid SSE in situ can include: depositing, on a surface of an electrode of the battery, a mixture comprising the SSE particles and at least a portion of salt for the SIS; filling the battery with a solvent; and heating the battery to form the SIS by at least melting and/or dissolving the portion of the salt into the solvent.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: February 25, 2020
    Assignee: American Lithium Energy Corporation
    Inventor: Jiang Fan
  • Patent number: 10559820
    Abstract: According to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode including a negative electrode active material layer, a separator layer, an intermediate region, and a gel nonaqueous electrolyte. The separator layer and the intermediate region hold at least a part of the gel nonaqueous electrolyte. The nonaqueous electrolyte battery satisfies a volume ratio VA/VB of 5 or more. VA is a volume of the intermediate region. VB is an average volume of gaps among the particles of the niobium-and-titanium-containing composite oxide in the negative electrode active material layer.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: February 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Kishi, Kazuomi Yoshima, Wen Zhang, Yasuhiro Harada, Norio Takami
  • Patent number: 10553853
    Abstract: A composite material comprising graphene or reduced graphene oxide and a polymer-derived ceramic material, such as SiOC, is provided. The composite materials can be used to construct anodes (16), which can be used in batteries (10), particularly lithium ion batteries. The anodes exhibit relatively high charge capacities at various current densities. Moreover, the charge capacity of the anodes appears exceptionally stable even after numerous charging cycles, even at high current densities.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: February 4, 2020
    Assignee: Kansas State University Research Foundation
    Inventors: Gurpreet Singh, Lamuel David, Romil Bhandavat
  • Patent number: 10547048
    Abstract: An electrode material for a lithium ion battery including an active material represented by LiMPO4 (M is at least one selected from the group consisting of Fe, Mn, Co, Ni, Zn, Al, Ga, Mg, and Ca), in which an oil absorption amount for which diethyl carbonate is used (DEC oil absorption amount) is 50 cc/100 g or more and 80 cc/100 g or less, and a ratio (DEC/NMP) of the DEC oil absorption amount to an oil absorption amount for which N-methyl-2-pyrrolidinone is used (NMP oil absorption amount) is 1.3 or more and 1.8 or less.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: January 28, 2020
    Assignee: SUMITOMO OSAKA CLEMENT CO., LTD.
    Inventors: Satoru Oshitari, Ryuuta Yamaya
  • Patent number: 10505236
    Abstract: A device and method of generating an electrical potential including an electrochemical cell, and at least one heat source, cooling source or both. The electrochemical cell includes an anode and a cathode connected by a polymer electrolyte layer, preferably a dry polymer electrolyte layer. The heat source, if present, is placed in direct thermal contact with one of the anode or cathode, while the cooling source, if present, is placed in direct thermal contact with one of the anode or cathode not in contact with the heat source. The resulting temperature differential between the anode and cathode induces a concentration gradient between the anode and the cathode generating the electrical potential.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: December 10, 2019
    Assignee: THE FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
    Inventor: Daniel T. Hallinan
  • Patent number: 10505179
    Abstract: A method is provided for producing polyanionic positive electrode active material composite particles, which comprises: a step 1 wherein precursor composite granulated bodies, each of which contains a polyanionic positive electrode active material precursor particle in graphite oxide, are formed by mixing a polyanionic positive electrode active material precursor and graphite oxide; and a step 2 wherein the precursor composite granulated bodies obtained in step 1 are heated at 500° C. or higher in an inert atmosphere or in a reducing atmosphere. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is less than 50% of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: December 10, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Eiichiro Tamaki, Yasuo Kubota, Hiroaki Kawamura, Miyuki Matsushita
  • Patent number: 10497930
    Abstract: The present invention relates to a negative electrode including a multi-protective layer and a lithium secondary battery including the same, and the multi-protective layer prevents lithium dendrite growth on a surface of the electrode, and does not cause overpotential during charge and discharge since the protective layer itself does not function as a resistive layer, and therefore, is capable of preventing battery performance decline and securing stability when operating a battery.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hye Jin Lee, Kyung Hwa Woo
  • Patent number: 10476075
    Abstract: A zinc anode material for secondary cells includes zinc-containing particles that are coated with a coating composition containing at least one oxide of a metal selected from titanium, zirconium, magnesium, tin and yttrium. The surface localization ratio of the coating composition of Equation (1) ranges from 1.6 to 16. In Equation (1), the surface metal atomic ratio of the coating composition is represented by Equation (2), and the bulk metal atomic ratio of the coating composition is represented by Equation (3).
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: November 12, 2019
    Assignees: Nissan Motor Co., Ltd., National University Corporation, Kyoto University
    Inventors: Masaki Ono, Akiyoshi Nakata, Hajime Arai, Zempachi Ogumi
  • Patent number: 10439213
    Abstract: The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly. The preparation method includes: dispersing nitrogen-doped graphenes in a liquid-phase reaction system including at least sulfur source and acid, and depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the positive electrode composite material. The positive electrode composite material of the invention has a high conductivity, a high sulfur utilization rate, and a high rate, thereby restraining the dissolution and shuttle effect in the lithium sulfur batteries, and enhancing the cyclic performance of the batteries.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: October 8, 2019
    Assignee: SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS, CHINESE ACADEMY OF SCIENCE
    Inventors: Yuegang Zhang, Yongcai Qiu, Wanfei Li, Guizhu Li, Yuan Hou, Meinan Liu, Lisha Zhou, Fangmin Ye, Hongfei Li
  • Patent number: 10439212
    Abstract: Composite cathode materials are provided herein. Disclosed composite cathode materials include those comprising an aluminum borate coating. Systems making use of the cathode active materials are also described, such as electrochemical cells and electrodes for use in electrochemical cells. Methods for making and using the composite cathode materials are also disclosed.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: October 8, 2019
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Ratnakumar V. Bugga, Candace S. Seu
  • Patent number: 10430003
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 1, 2019
    Assignee: DONGWOO FINE-CHEM CO.. LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
  • Patent number: 10431826
    Abstract: According to the present invention, a nonaqueous electrolyte secondary battery that includes a positive electrode, a negative electrode and a nonaqueous electrolyte is provided. The positive electrode has an operation upper limit potential of 4.3 V or more based on metal lithium and includes a positive electrode active material and an inorganic phosphate compound that has ion conductivity. The inorganic phosphate compound is in a particle state. A ratio of particles having a particle size of 20 ?m or more is 1% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume. Further, a ratio of particles having a particle size of 10 ?m or more may be 10% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 1, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshitomo Takebayashi
  • Patent number: 10411250
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a negative electrode, a positive electrode, and a nonaqueous electrolyte is provided. The negative electrode contains a negative electrode active material. The positive electrode contains a positive electrode active material. The negative electrode active material contains a titanium-containing composite oxide. The positive electrode active material contains secondary particles of a first composite oxide and primary particles of a second composite oxide. The first composite oxide is represented by a general formula LiMn1?x?yMgxFeyPO4 (0<x?0.1, 0<y?0.3). The second composite oxide is represented by a general formula LiCo1?a?bNiaMnbO2 (0?a, b?0.5).
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 10, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keigo Hoshina, Yasunobu Yamashita, Yoshiyuki Isozaki, Norio Takami
  • Patent number: 10403891
    Abstract: A positive electrode material includes an active material represented by Li2Mn(1?2x)NixMoxO3 (where 0<x<0.4).
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: September 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuko Asano, Kensuke Nakura
  • Patent number: 10403447
    Abstract: The disclosure relates to a lithium storage element containing a positive electrode that contains a lithium compound other than an active material, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions, for which an active material is applied on both surfaces of a nonporous positive electrode power collector, and a negative electrode active material capable of storing and releasing lithium ions is applied on both surfaces of a nonporous negative electrode power collector.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: September 3, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuteru Umetsu, Takeshi Kamijo, Yuichiro Hirakawa, Keita Kusuzaka, Nobuhiro Okada, Taku Suetomi
  • Patent number: 10374229
    Abstract: A positive electrode active material for alkali-ion secondary batteries is provided which contains 20-55% of Na2O+Li2O, 10-60% of CrO+FeO+MnO+CoO+NiO, and 20-55% of P2O5+SiO2+B2O3 in terms of oxide-equivalent mol % and includes 50 mass % or more of an amorphous phase. According to the present invention, it is possible to provide a positive electrode active material for alkali-ion secondary batteries that enables high energy density and is excellent in the charge and discharge characteristics.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: August 6, 2019
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tsuyoshi Honma, Takayuki Komatsu, Satoshi Nakata, Hideo Yamauchi, Fumio Sato
  • Patent number: 10361423
    Abstract: Provided herein is a method for preparing a battery electrode based on an aqueous slurry. The method disclosed herein has the advantage that an aqueous solvent can be used in the manufacturing process, which can save process time and facilities by avoiding the need to handle or recycle hazardous organic solvents. Therefore, costs are reduced by simplifying the total process. In addition, the batteries having the electrodes prepared by the method disclosed herein show impressive energy retention.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 23, 2019
    Assignee: GRST INTERNATIONAL LIMITED
    Inventors: Peihua Shen, Sing Hung Eric Wong
  • Patent number: 10355251
    Abstract: A rolled electrode assembly having a positive electrode plate and a negative electrode plate is housed in a prismatic outer body having as mouth together with non-aqueous electrolyte, and the mouth of the prismatic outer body is sealed by a sealing plate made of metal. The rolled electrode assembly is housed in the prismatic outer body, with the outer surface of the rolled electrode assembly covered by an insulating sheet except for the outer surface facing the sealing plate. The arithmetic mean roughness (Sa) of at least one surface of the insulating sheet disposed between the rolled electrode assembly and the prismatic outer body is 0.3 ?m or more.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 16, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takuya Yamawaki, Eiji Okutani
  • Patent number: 10298043
    Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1<T2), in the case where T<T1, constant current charge is performed until voltage reaches a given value and then constant voltage charge is performed; in the case where T1?T<T2, only constant current charge is performed; and in the case where T2?T, charge is not performed.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: May 21, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Minoru Takahashi, Junpei Momo, Hiroyuki Miyake, Kei Takahashi
  • Patent number: 10290869
    Abstract: A layered composite composition having a general chemical formula of Li?-xADx(Mn?-y-?AlyNi?-?Co?-zAEDz)O2, wherein AD is an alkaline dopant for Li, AED is an alkaline earth dopant for Co or Ni, and Al is a dopant for Mn or Ni, and at least two of AD, AED, and Al are present in the composition, and the dopants, if present, are at an amount that does not result in the formation of new phase.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 14, 2019
    Inventors: Richard L. Axelbaum, Miklos Lengyel
  • Patent number: 10290856
    Abstract: A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cm3 to 1.5 g/cm3, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 14, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Satoru Oshitari, Ryuuta Yamaya
  • Patent number: 10276858
    Abstract: The present invention aims to provide an electrode for lithium ion batteries which exhibits excellent electrical conductivity even if its thickness is large. The electrode for lithium ion batteries of the present invention includes a first main surface to be located adjacent to a separator of a lithium ion battery and a second main surface to be located adjacent to a current collector of the lithium ion battery. The electrode has a thickness of 150 to 5000 ?m. The electrode contains, between the first main surface and the second main surface, a conductive member (A) made of an electronically conductive material and a large number of active material particles (B). At least part of the conductive member (A) forms a conductive path that electrically connects the first main surface to the second main surface. The conductive path is in contact with the active material particles (B) around the conductive path.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 30, 2019
    Assignees: SANYO CHEMICAL LTD., NISSAN MOTOR CO., LTD.
    Inventors: Yusuke Mizuno, Yasuhiro Shindo, Yasuhiro Tsudo, Kenichi Kawakita, Yuki Kusachi, Yasuhiko Ohsawa, Hajime Satou, Hiroshi Akama, Hideaki Horie
  • Patent number: 10266410
    Abstract: A preparation method of battery composite material includes steps of providing a manganese-contained compound, phosphoric acid, a lithium-contained compound, a carbon source, and deionized water; processing a reaction of the manganese-contained compound, the phosphoric acid, and a portion of the deionized water to produce a first product; placing the first product at a first temperature for at least a first time period to produce a first precursor, wherein the chemical formula of the first precursor is written by Mn5(HPO4)2(PO4)2(H2O)4; and processing a reaction of at least the first precursor, the lithium-contained compound, and another portion of the deionized water, adding the carbon source, and then calcining to produce battery composite material. Therefore, the preparation time is shortened, the energy consuming is reduced, the phase forming of the precursor is more stable, and the advantages of reducing the cost of preparation and enhancing the quality of products are achieved.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: April 23, 2019
    Assignee: ADVANCED LITHIUM ELECTROCHEMISTRY CO., LTD.
    Inventors: Hsiang-Pin Lin, Han-Wei Hsieh, An-Feng Huang, Chun-Ming Huang