With Salt Or Acid Component Patents (Class 429/207)
  • Patent number: 11183691
    Abstract: Provided are a metal element-doped positive electrode active material for a high voltage and a preparation method thereof. The positive electrode active material may include a lithium cobalt oxide having a layered crystal structure; and a metal element (M) incorporated into the lithium cobalt oxide in an amount of 0.2 parts by weight to 1 part by weight with respect to 100 parts by weight of the lithium cobalt oxide, wherein the metal element (M) does not form a chemical bond with the elements of the lithium cobalt oxide, and wherein the layered crystal structure in maintained at a positive electrode potential of more than 4.5 V (based on Li potential) when fully charged.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: November 23, 2021
    Inventors: Sungbin Park, Younguk Park, Jiyoung Park, Bo Ram Lee, Chi Ho Jo, Hyuck Hur, Wang Mo Jung
  • Patent number: 11139475
    Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: October 5, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry Academy Cooperation Foundation of Sejong University
    Inventors: Seung-Min Oh, KiSeok Koh, Yeolmae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung-Taek Myung
  • Patent number: 11127951
    Abstract: An alkaline secondary battery disclosed in the present application includes a positive electrode containing a positive electrode active material, a negative electrode, and a separator. The positive electrode active material contains a mixture of a silver oxide and a silver-bismuth complex oxide. A discharge curve is obtained when the battery that is fully charged is discharged with a constant current until a battery voltage drops to 1.0 V. The battery voltage at a point on the discharge curve where x (%) of a total discharge capacity has been discharged from the battery since start of discharge is represented by Vx (V). The discharge curve satisfies V10?V70?0.08, has a step in the range of 70?x?90, and shows that a size of the step represented by V70?V90 is 0.04 or more and 0.15 or less.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 21, 2021
    Assignee: Maxell Holdings, Ltd.
    Inventors: Yusuke Inoue, Mitsutoshi Watanabe
  • Patent number: 11101460
    Abstract: To provide a lithium-ion secondary battery having higher discharge capacity and higher energy density and a manufacturing method thereof. The lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer provided over the positive electrode current collector. In the positive electrode active material layer, graphenes and lithium-containing composite oxides are alternately provided. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: August 24, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Tomoya Futamura, Tamae Moriwaka
  • Patent number: 11063254
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte having a lithium ion conductivity, and the negative electrode includes a negative electrode collector, a negative electrode active material layer provided on a surface of the negative electrode collector, and a coating film which at least partially covers a surface of the negative electrode active material layer and which has a lithium ion permeability. The coating film contains a lithium compound which contains an element M, an element A, an element F, and lithium; the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and the element A is at least one selected from the group consisting of S, O, N, and Br.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 13, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Kawada, Atsushi Fukui
  • Patent number: 11011741
    Abstract: A positive electrode active material for lithium secondary batteries, includes: a lithium composite metal compound containing secondary particles formed by aggregation of primary particles; and a lithium-containing tungsten oxide, in which the lithium-containing tungsten oxide is present at least in interparticle spaces of the primary particles, and in a pore distribution of the positive electrode active material for lithium secondary batteries measured by a mercury intrusion method, a surface area of pores having a pore diameter in a range of 10 nm or more to 200 nm or less is 0.4 m2/g or more and 3.0 m2/g or less.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 18, 2021
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, TANAKA CHEMICAL CORPORATION
    Inventors: Hiroyuki Kurita, Takashi Arimura, Yusuke Maeda, Kayo Matsumoto
  • Patent number: 10978740
    Abstract: The objective of the present invention is to provide an electrolyte solution of which electrolyte salt concentration is high and by which cycle characteristics hardly deteriorate and battery lifetime can be extended, and a lithium ion secondary battery which contains the above electrolyte solution. The electrolyte solution of the present invention comprises an electrolyte salt and a solvent, wherein a concentration of the electrolyte salt is more than 1.1 mol/L, the electrolyte salt contains a compound represented by the following formula (1): (XSO2) (FSO2)NLi (1) (wherein X is a fluorine atom, a C1-6 alkyl group or a C1-6 fluoroalkyl group), and the solvent contains a cyclic carbonate.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: April 13, 2021
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Hiroyuki Mizuno, Kazuhisa Hirata, Takeo Kawase, Izuho Okada, Hiromoto Katsuyama, Miwako Tominaga, Masayuki Okajima
  • Patent number: 10868338
    Abstract: The present invention provides one with a Ni—Fe battery exhibiting enhanced power characteristics. The battery uses a particular electrolyte. The resulting characteristics of specific power and power density are much improved over conventional Ni—Fe batteries. The electrolyte comprises sodium hydroxide, with lithium hydroxide and sodium sulfide. The iron anode comprises an iron active material and a polyvinyl alcohol binder.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: December 15, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventor: Randy Ogg
  • Patent number: 10854926
    Abstract: The present invention provides one with a Ni—Fe battery exhibiting enhanced power characteristics. The battery uses a particular electrolyte. The resulting characteristics of specific power and power density are much improved over conventional Ni—Fe batteries. The electrolyte comprises sodium hydroxide, with lithium hydroxide and sodium sulfide. The iron anode comprises an iron active material and a polyvinyl alcohol binder.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: December 1, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventor: Randy Ogg
  • Patent number: 10847843
    Abstract: Providing is a battery comprising an iron anode, a nickel cathode, and an electrolyte comprised of sodium hydroxide, lithium hydroxide and a soluble metal sulfide. In one embodiment the concentration of sodium hydroxide in the electrolyte ranges from 6.0 M to 7.5 M, the amount of lithium hydroxide present in the electrolyte ranges from 0.5 to 2.0 M, and the amount of metal sulfide present in the electrolyte ranges from 1-2% by weight.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: November 24, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene Ogg, Phil Bennett, Alan Seidel, Paul Gifford
  • Patent number: 10818926
    Abstract: A method of producing a powder mass for a lithium battery, comprising: (a) mixing an inorganic filler and an elastomer or its precursor in a liquid medium or solvent to form a suspension; (b) dispersing a plurality of particles of an anode active material in the suspension to form a slurry; and (c) dispensing the slurry and removing the solvent and/or polymerizing or curing the precursor to form the powder mass, wherein at least a particulate is composed of one or a plurality of anode particles being encapsulated by a layer of inorganic filler-reinforced elastomer having a thickness from 1 nm to 10 ?m, a fully recoverable tensile strain from 2% to 500%, and a lithium ion conductivity from 10?7 S/cm to 5×10?2 S/cm and the inorganic filler has a lithium intercalation potential from 1.1 V to 4.5 V versus Li/Li+.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 27, 2020
    Assignee: Global Graphene Group, Inc.
    Inventors: Baofei Pan, Hui He, Aruna Zhamu, Bor Z. Jang
  • Patent number: 10818973
    Abstract: The electrolyte composition at least includes an aprotic organic solvent, a lithium salt, a flame retardant, and inorganic oxide particles. The flame retardant is at least one selected from a group consisting of a phosphorus-based acid ester having a fluorinated alkyl group and a phosphate amide having a fluorinated alkyl group.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: October 27, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mamoru Mizutani, Shin-ichi Ogata
  • Patent number: 10804573
    Abstract: Provided is a battery comprising an iron electrode and an electrolyte comprised of sodium hydroxide, lithium hydroxide and a soluble metal sulfide. In one embodiment, the concentration of sodium hydroxide in the electrolyte ranges from 6.0 M to 7.5 M, the amount of lithium hydroxide present in the electrolyte ranges from 0.5 M to 2.0 M, and the amount of metal sulfide present in the electrolyte ranges from 1 to 2% by weight.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: October 13, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene Ogg, Phil Bennett, Alan Seidel, Paul Gifford
  • Patent number: 10756334
    Abstract: A method of producing a structured composite material is described. A porous media is provided, an electrically conductive material is deposited on surfaces or within pores of the plurality of porous media particles, and an active material is deposited on the surfaces or within the pores of the plurality of porous media particles coated with the electrically conductive material to coalesce the plurality of porous media particles together and form the structured composite material.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 25, 2020
    Assignee: Lyten, Inc.
    Inventors: Michael W. Stowell, Bryce H. Anzelmo, David Tanner, Bruce Lanning, Joe Griffith Cruz
  • Patent number: 10727506
    Abstract: A flow battery includes: a liquid including redox mediator; an electrode at least partially immersed in the liquid; a second electrode; an active material at least partially immersed in the liquid; and a circulator that circulates the liquid between the electrode and the active material.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: July 28, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Yu Otsuka
  • Patent number: 10727538
    Abstract: As a nonaqueous electrolyte secondary battery whose battery performance is prevented from being deteriorated by charge and discharge, provided is a nonaqueous electrolyte secondary battery including: a nonaqueous electrolyte secondary battery separator having ion permeability barrier energy of not less than 300 J/mol/?m and not more than 900 J/mol/?m per unit film thickness; and a nonaqueous electrolyte containing a given additive in an amount of not less than 0.5 ppm and not more than 300 ppm.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 28, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Eiko Kashiwazaki, Ichiro Arise, Chikara Murakami
  • Patent number: 10707537
    Abstract: The present invention provides one with a high cycle life Ni—Fe battery. The battery uses a particular electrolyte. The electrolyte comprises sodium hydroxide, as well as lithium hydroxide and sulfide. The use of the sodium hydroxide based electrolyte with the iron anode in the battery has been found to enhance the performance characteristics of the battery. The resulting characteristics of cycle life, as well as power and charge retention, are much improved over conventional Ni—Fe batteries.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: July 7, 2020
    Assignee: Encell Technology, Inc.
    Inventor: Randy Ogg
  • Patent number: 10686187
    Abstract: A polyimide-coated active material particle (21) of the present invention includes an active material particle (23) and a polyimide layer (24) derived from a monomeric polyimide precursor and coated on the active material particle (23). A negative electrode (200) of the present invention includes a current collector (30) and an active material layer (20) including the negative electrode active material particle (21) coated with the polyimide layer (24) derived from a monomeric polyimide precursor, and an aqueous binder (22). With the polyimide-coated active material particle of the present invention, it is possible to suppress the amount of organic solvent used and improve the charge-discharge cycle of the electrode.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: June 16, 2020
    Assignee: I.S.T CORPORATION
    Inventor: Kae Fujiwara
  • Patent number: 10680240
    Abstract: Embodiments provide an electrode material for a lithium ion battery capable of decreasing a metal elution amount even when an electrode active material having a large specific surface area is used as the electrode material and capable of obtaining a lithium ion battery in which a decrease in a capacity caused by storage at a high temperature in a fully charged state is suppressed and a lithium ion battery. The electrode material for a lithium ion battery includes electrode active material particles and a carbonaceous film that coats surfaces of the electrode active material particles, in which a tap density is 0.95 g/cm3 or more and 1.6 g/cm3 or less, and a volume ratio of micro pores to a total volume that is evaluated from nitrogen adsorption measurement is 1.5% or more and 2.5% or less.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: June 9, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Patent number: 10658706
    Abstract: An electrolytic solution for a power storage device, the electrolytic solution containing water as a solvent, wherein an amount of the solvent is greater than 4 mol and not greater than 15 mol with respect to 1 mol of an alkali metal salt.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: May 19, 2020
    Assignees: THE UNIVERSITY OF TOKYO, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsuo Yamada, Yuki Yamada, Kenji Usui, Junichi Niwa, Tomoyuki Kawai
  • Patent number: 10587011
    Abstract: The present invention provides one with a Ni—Fe battery exhibiting enhanced power characteristics. The battery uses a particular electrolyte comprising sodium hydroxide, lithium hydroxide, and sulfide. The use of the sodium hydroxide based electrolyte with the iron anode in the battery has been found to enhance the performance characteristics of the battery. The resulting characteristics of specific power and power density are much improved over conventional Ni—Fe batteries.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: March 10, 2020
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventor: Randy Ogg
  • Patent number: 10553862
    Abstract: A positive electrode active material for a secondary battery contains second particles which are produced by aggregation of primary particles of a lithium transition metal oxide containing Ni and W, and a boron compound present inside and on the surfaces of the secondary particles.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: February 4, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi Ogata, Takao Kokubu
  • Patent number: 10553878
    Abstract: The present disclosure is directed to a positive electrode active material for non-aqueous electrolyte secondary batteries that is capable of suppressing an increase in battery direct current resistance due to high-temperature storage (e.g., storage at 60° C. or higher). Positive electrode active material particles in one aspect of the present disclosure include secondary particles formed by aggregation of primary particles of a lithium transition metal oxide containing Ni and Mn and include a boron compound present in the inner part and surface of the secondary particles. The difference in composition ratio between Ni and Mn in the lithium transition metal oxide is more than 0.2. The proportion of the boron element content in the inner part of the secondary particles to the total boron element content in the inner part and surface of the secondary particles is in the range from 5% by mass to 60% by mass.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: February 4, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takao Kokubu, Atsushi Ogata
  • Patent number: 10522816
    Abstract: A lithium secondary battery of the present invention has a positive electrode is provided with a positive electrode mix layer that includes a positive electrode active material and a conductive material. The positive electrode mix layer has two peaks, large and small, of differential pore volume over a pore size ranging from 0.01 ?m to 10 ?m in a pore distribution curve measured by a mercury porosimeter. A pore size of the smaller peak B of the differential pore volume is smaller than a pore size of the larger peak A of the differential pore volume.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: December 31, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Nagai, Masahiro Morita, Yukihiro Okada
  • Patent number: 10483591
    Abstract: The present invention is directed towards phosphorous containing flame retarding materials including a triazine moiety and an electrolyte for electrochemical cells containing the same.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: November 19, 2019
    Assignee: NOHMS Technologies, Inc.
    Inventors: Surya Moganty, Yue Wu, Luigi Abbate, Kevin Brown, John Sinicropi, Gabriel Torres
  • Patent number: 10483538
    Abstract: The present invention relates to a mixed oxide containing a) a mixed-substituted lithium manganese spinel in which some of the manganese lattice sites are occupied by lithium ions and b) a boron-oxygen compound. Furthermore, the present invention relates to a process for its preparation and the use of the mixed oxide as electrode material for lithium ion batteries.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: November 19, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Christian Vogler, Gerhard Nuspl, Margret Wohlfahrt-Mehrens, Peter Axmann, Gisela Arnold
  • Patent number: 10461323
    Abstract: Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: October 29, 2019
    Assignee: Storedot Ltd.
    Inventors: Doron Burshtain, Nir Kedem, Eran Sella, Daniel Aronov
  • Patent number: 10454111
    Abstract: A nonaqueous electrolyte secondary battery electrode is obtained by coating and drying a slurry including an active material, a crosslinking water-absorbing resin particle, a binder, and water, on a current collector surface to form a mixture layer and then compressing the mixture layer, and a nonaqueous electrolyte secondary battery includes the electrode, a separator, and a nonaqueous electrolytic solution.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: October 22, 2019
    Assignee: TOAGOSEI CO., LTD.
    Inventor: Hideo Matsuzaki
  • Patent number: 10347947
    Abstract: A lithium-ion battery includes a cell placed into an electrically non-conducting box filled with an electrolyte. The cell includes an intercalation cathode and an electroconductive anode separated from each other by a porous separator. The cell is submerged into the electrolyte. The electrolyte includes an aqueous solution of metals salts. The aqueous solution includes metals ions of the metals salts. A pH value of the aqueous solution being adapted to prevent a hydrolysis of the metal ions in the electrolyte.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 9, 2019
    Assignee: Nazarbayev University Research and Innovation System
    Inventor: Zhumabay Bakenov
  • Patent number: 10305095
    Abstract: A method of producing a positive electrode active material for a nonaqueous electrolyte secondary battery, the method including: stirring core particles including a lithium-transition metal composite oxide represented by a formula: LiaNi1-x-y-zCoxM1yM2zO2 wherein 1.00?a?1.50, 0.00?x?0.50, 0.00?y?0.50, 0.00?z?0.02, x+y?0.70, M1 consists of Mn and Al, and M2 is at least one element selected from the group consisting of Zr, W, Ti, Mg, Ta, Nb and Mo; mixing the core particles with a first solution containing a rare earth element and a second solution containing a fluorine-containing compound; and heating the coated core particles at a temperature no greater than 500° C.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: May 28, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Yoshitomo Miyashita, Keisuke Fujihara
  • Patent number: 10305139
    Abstract: A metal-ion energy storage system includes positive and negative electrodes, a separator located between the positive and negative electrodes, an electrolyte including a mixture of imidazole salt and a main metal halogen. The electrolyte includes an additive other than the main metal halogen.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 28, 2019
    Assignee: HIGH TECH BATTERY INC.
    Inventor: Kuei Yung Wang Chen
  • Patent number: 10297886
    Abstract: An electrolyte for metal-air batteries, which is able to inhibit self-discharge of metal-air batteries, and a metal-air battery using the electrolyte. The electrolyte for metal-air batteries containing an aqueous solution that comprises at least one self-discharge inhibitor selected from the group consisting of M2HPO4, M3PO4, M4P2O7, MH2PO2, M2H2P2O7, LHPO4, MLPO4, L2P2O7 and LH2P2O7, where M is any one selected from the group consisting of Li, K, Na, Rb, Cs and Fr, and L is any one selected from the group consisting of Mg, Ca, Sr, Ba and Ra.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 21, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Suyama
  • Patent number: 10177417
    Abstract: A battery including an anode including iron sulphide as active material, with the sulphur content being at least 5 wt. % of the total of iron and sulphur, a cathode, and an alkaline electrolyte including an alkaline component dissolved in water, with the anode including less than 50 wt. % of other active materials than iron sulphide. Preferably, the sulphur content of the anode is more than 10 wt. % of sulphur, calculated in the total of iron and sulphur and 70 wt. % or less. The use of iron sulphide in the anode provides a rechargeable electrical energy storage system which is low-cost, easy to produce, and environmental friendly, and which shows a long lifetime and has excellent electrochemical properties like high power density and good cycling efficiency. The battery according to the invention also shows superior charge/discharge behavior as compared to e.g. lead-acid and nickel-iron batteries.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: January 8, 2019
    Assignee: E-STONE BATTERIES B.V.
    Inventors: Thomas Van Dijk, Fokko Marten Mulder
  • Patent number: 10109887
    Abstract: This disclosure relates to a battery and a method for its manufacture. One embodiment of the battery may include a three-dimensionally structured thin film solid state battery having interdigitated cathode and anode volumes, which are separated by an electrolyte material. In an example method, a cathode current collector layer and an anode current collector layer may be formed on a substrate. The cathode current collector layer and the anode current collector layer may include a cathode current collector area and an anode current collector area, respectively. A cathode layer may be formed on the cathode current collector layer and an anode layer may be formed on the anode current collector layer. An electrolyte layer may be formed on the substrate. The electrolyte layer may include an electrolyte area, which separates the anode current collector area and the cathode current collector area.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: October 23, 2018
    Assignee: Google LLC
    Inventors: Ramesh Bhardwaj, Tai Sup Huang
  • Patent number: 10038182
    Abstract: The present invention provides a graphene coating-modified electrode plate for lithium secondary battery, characterized in that, the electrode plate comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. A graphene coating-modified electrode plate for lithium secondary battery according to the present invention comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. The graphene-modified electrode plate for lithium secondary battery thus obtained increases the electrical conductivity and dissipation functions of the electrode plate due to the better electrical conductivity and thermal conductivity of graphene. The present invention further provides a method for producing a graphene coating-modified electrode plate for lithium secondary battery.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: July 31, 2018
    Assignee: NINGBO INSTITUTE OF MATERIAL TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Zhaoping Liu, Changlin Tang, Jiangang Zhang, Xufeng Zhou, Huasheng Hu
  • Patent number: 10014558
    Abstract: Provided is a nickel-iron battery. The battery comprises a positive nickel electrode, an iron negative electrode, an electrolyte comprising a surfactant, and a non-polar separator. In one embodiment, the non-polar separator is comprised of a polyolefin, and the surfactant comprises an anionic surfactant, a cationic surfactant or a zwitterionic surfactant.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 3, 2018
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Gene Ogg, Alan P. Seidel
  • Patent number: 9771273
    Abstract: Provided is a lithium titanate powder for an electrode of an energy storage device, the lithium titanate powder comprising Li4Ti5O12 as a main component, wherein, when the volume surface diameter calculated from the specific surface area determined by the BET method is represented as DBET and the crystallite diameter calculated from the half-peak width of the peak of the (111) plane of Li4Ti5O12 by the Scherrer equation is represented as DX, DBET is 0.1 to 0.6 ?m, DX is greater than 80 nm, and (DBET/DX (?m/?m)) the ratio of DBET to DX is 3 or less. Also provided are an active material including the lithium titanate powder and an energy storage device using the active material.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: September 26, 2017
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Hirofumi Takemoto, Yoshizumi Tanaka, Hiroshi Fujino, Yasumasa Iwamoto
  • Patent number: 9742030
    Abstract: An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: August 22, 2017
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, IMPRINT ENERGY, INC.
    Inventors: Paul K. Wright, James W. Evans, Christine Ho
  • Patent number: 9673454
    Abstract: With a small amount of a conductive additive, an electrode for a storage battery including an active material layer which is highly filled with an active material is provided. The use of the electrode enables fabrication of a storage battery having high capacity per unit volume of the electrode. By using graphene as a conductive additive in an electrode for a storage battery including a positive electrode active material, a network for electron conduction through graphene is formed. Consequently, the electrode can include an active material layer in which particles of an active material are electrically connected to each other by graphene. Therefore, graphene is used as a conductive additive in an electrode for a sodium-ion secondary battery including an active material with low electric conductivity, for example, an active material with a band gap of 3.0 eV or more.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: June 6, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tamae Moriwaka, Satoshi Seo, Takuya Hirohashi, Kunio Hosoya, Shunsuke Adachi
  • Patent number: 9662635
    Abstract: The catalytic composition for the electrochemical reduction of carbon dioxide is a metal oxide supported by multi-walled carbon nanotubes. The metal oxide may be nickel oxide (NiO) or tin dioxide (SnO2). The metal oxides form 20 wt % of the catalyst. In order to make the catalysts, a metal oxide precursor is first dissolved in deionized water to form a metal oxide precursor solution. The metal oxide precursor solution is then sonicated and the solution is impregnated in a support material composed of multi-walled carbon nanotubes to form a slurry. The slurry is then sonicated to form a homogeneous solid solution. Solids are removed from the homogeneous solid solution and dried in an oven for about 24 hours at a temperature of about 110° C. Drying is then followed by calcination in a tubular furnace under an argon atmosphere for about three hours at a temperature of 450° C.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: May 30, 2017
    Assignees: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventors: Saleem Ur Rahman, Shakeel Ahmed, Mohammad Mozahar Hossain, Shahid Muhammad Bashir
  • Patent number: 9660251
    Abstract: Provided is an electric storage device including: a first electrode plate; a second electrode plate having a polarity opposite to that of the first electrode plate; and a separator interposed between the first electrode plate and the second electrode plate, wherein the first electrode plate includes a current collector and a mixture layer laminated onto the current collector, the mixture layer contains at least one of the binder and the conductive additive, primary particles of an active material, and secondary particles each having a hollow region formed therein by aggregation of a plurality of the primary particles, and the at least one of the binder and the conductive additive is partially distributed in the hollow region.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 23, 2017
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Takeshi Sasaki, Taro Yamafuku, Kazuki Kawaguchi, Masaki Masuda
  • Patent number: 9650392
    Abstract: Disclosed are an electrode active material for a power storage device and a power storage device including the same. The electrode active material includes a polymer that includes: a tetravalent group derived from a compound selected from the group consisting of EBDT and derivatives thereof, TTF and derivatives thereof, a condensation product of EBDT and TTF and derivatives thereof, and a TTF dimer and derivatives thereof; and a divalent group —S-A-S— where A is a divalent aliphatic group or a divalent group represented by the formula -E-D-E- where D represents a divalent alicyclic group, a divalent aromatic group, or a carbonyl group, and two Es each independently represent a divalent aliphatic group. Adjacent two tetravalent groups mentioned above are linked by one or two divalent groups mentioned above.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: May 16, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Nobuhiko Hojo, Yu Ohtsuka, Takafumi Tsukagoshi, Yohji Misaki
  • Patent number: 9646773
    Abstract: The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1): wherein R1 and R2, which may be the same as or different from each other, each independently represent a straight or branched chain C1-C4 alkyl group.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 9, 2017
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Kazuyuki Kobayashi, Noriko Yamamoto
  • Patent number: 9559385
    Abstract: Provided is a nickel-iron battery. The battery comprises a positive nickel electrode, an iron negative electrode, an electrolyte comprising a surfactant, and a non-polar separator. In one embodiment, the non-polar separator is comprised of a polyolefin, and the surfactant comprises a zwitterionic surfactant.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: January 31, 2017
    Assignee: ENCELL TECHNOLOGY, INC.
    Inventors: Randy Ogg, Alan P. Seidel
  • Patent number: 9379373
    Abstract: A nickel-zinc battery includes a battery housing, a nickel oxide positive electrode supported in the battery housing, a metal substrate negative electrode supported in the battery housing, a spacer disposed between the positive and negative electrodes, an electrolyte contained within the battery housing and a means for circulating electrolyte in fluid communication with the housing for circulating the electrolyte between the positive and negative electrodes. The electrolyte contains zinc and the metal substrate is adapted for deposition of the zinc during charging of the battery. The spacer maintains the positive electrode in a spaced relationship apart from the negative electrode.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: June 28, 2016
    Assignee: RESEARCH FOUNDATION OF THE CITY UNIVERSITY OF NEW YORK
    Inventors: Sanjoy Banerjee, Yasumasa Ito, Martin Klein, Michael E. Nyce, Daniel Steingart, Robert Plivelich, Joshua Gallaway
  • Patent number: 9318775
    Abstract: An electrolyte for a magnesium battery includes a magnesium salt having the formula MgBxHy where x=11-12 and y=11-12. The electrolyte also includes a solvent, the magnesium salt being dissolved in the solvent. Various solvents including aprotic solvents and molten salts such as ionic liquids may be utilized.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 19, 2016
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Rana F. Mohtadi, Tyler J. Carter
  • Patent number: 9312566
    Abstract: The electrolyte includes a magnesium salt having the formula Mg(BX4)2 where X is selected from H, F and O-alkyl. The electrolyte also includes a solvent, the magnesium salt being dissolved in the solvent. Various solvents including aprotic solvents and molten salts such as ionic liquids may be utilized.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: April 12, 2016
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Rana F. Mohtadi, Masaki Matsui
  • Patent number: 9263736
    Abstract: A positive electrode material for a lithium ion secondary battery contains a first compound represented by Li3V2(PO4)3 and one or more second compounds selected from vanadium oxide and lithium vanadium phosphate.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: February 16, 2016
    Assignee: TDK CORPORATION
    Inventors: Keitaro Otsuki, Atsushi Sano, Tomohiko Kato
  • Patent number: 9099241
    Abstract: An enhanced energy storage device such as double layer capacitor or battery is made starting with a substrate capable of conducting stored energy. The substrate material is one in which ordered pores can be formed, creating a template of densely arrayed pores. An electrode comprised of high density carbon nanotubes within the template is grown from and oriented substantially perpendicular to the substrate to constitute an axi-symmetric, ultra-high surface area electrode, and then the template is then selectively and only partially etched. An electrolyte is structurally confined anisotropically around the nanotubes by a remaining portion of the selectively and partially etched template so that substantially enhanced energy storage is obtained. The optimal structural confinement, which causes optimal charge storage, depends upon the amount of partial etching of the template which is defined by the electrolyte selected.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: August 4, 2015
    Assignee: Mainstream Engineering Corporation
    Inventors: Dustin Zastrow, Katherine Nicol, Justin J. Hill
  • Patent number: 9040197
    Abstract: Electrode structures, and more specifically, electrode structures for use in electrochemical cells, are provided. The electrode structures described herein may include one or more protective layers. In one set of embodiments, a protective layer may be formed by exposing a lithium metal surface to a plasma comprising ions of a gas to form a ceramic layer on top of the lithium metal. The ceramic layer may be highly conductive to lithium ions and may protect the underlying lithium metal surface from reaction with components in the electrolyte. In some cases, the ions may be nitrogen ions and a lithium nitride layer may be formed on the lithium metal surface. In other embodiments, the protective layer may be formed by converting lithium to lithium nitride at high pressures. Other methods for forming protective layers are also provided.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: May 26, 2015
    Assignee: Sion Power Corporation
    Inventors: John D. Affinito, Gregory K. Lowe