Abstract: A method of producing an electrode plate includes forming a particle aggregate, forming an undried active material layer, and drying the undried active material layer. When the particle aggregate is formed, conductive particles include first conductive particles which have a three-dimensional structure in which primary particles with an average primary particle size of 30 nm to 80 nm are connected to each other and have an average structure length of 260 nm to 500 nm and second conductive particles which have a three-dimensional structure in which primary particles with an average primary particle size of 8 nm to 13 nm are connected to each other and have an average structure length of 80 nm to 250 nm.
Abstract: Provided is a layered-double-hydroxide-(LDH) containing composite material including a porous substrate and a high density LDH-containing functional layer on and/or in the porous substrate. The LDH-containing composite material of the present invention includes the porous substrate and the functional layer formed on and/or in the porous substrate. The functional layer contains a layered double hydroxide represented by the general formula M2+1?xM3+x(OH)2An?x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n represents an integer not less than 1, x represents a value of 0.1 to 0.4, and m represents a value not less than 0) and has water impermeability.
Abstract: An electrode assembly including a separator between a positive electrode and a negative electrode. Each of the positive electrode and the negative electrode includes a base member and an active material layer at at least one side of the base member. The active material layer of the negative electrode includes an alternating arrangement of orientation portions and non-orientation portions. Each of the orientation portions is oriented to have a constant angle with respect to one side of the negative electrode.
Type:
Grant
Filed:
November 28, 2017
Date of Patent:
October 19, 2021
Assignee:
SAMSUNG SDI CO., LTD.
Inventors:
Daeseop Lim, Hyejin Kwon, Bokhyun Ka, Ji-hoon Son, Kyeuyoon Sheem, Jinhyon Lee
Abstract: A solid electrolyte has a composition represented by the formula: MgxMySiOz, where M represents at least one selected from the group consisting of Ti, Zr, Hf, Ca, Sr, and Ba; x satisfies 0<x<2; y satisfies 0<y<2; and z satisfies 3<z<6.
Abstract: The invention relates to integrated electrode separators (IES), and their use in lithium ion batteries as replacements for free standing separators. The IES results from coating an electrode with a fluoropolymer aqueous-based emulsion or suspension, and drying the coating to produce a tough, porous separator layer on the electrodes. The aqueous fluoropolymer coating may optionally contain dispersed inorganic particles and other additives to improve electrode performance such as higher ionic conduction or higher temperature use. The IES provides several advantages, including a thinner, more uniform separator layer, and the elimination of a separate battery component (separator membrane) for a simpler and cost-saving manufacturing process. The aqueous separator coating can be used in combination with a solvent cast electrode as well as an aqueous cast electrode either in two separate process steps, or in a one-step process.
Type:
Grant
Filed:
November 1, 2013
Date of Patent:
September 28, 2021
Assignee:
Arkema Inc.
Inventors:
John Schmidhauser, Scott R. Gaboury, Ramin Amin-Sanayei, Christophe Roger, Wensheng He, Rosemary Heinze
Abstract: A lithium electrode and a lithium secondary battery including the same, and in particular, to a lithium electrode including a lithium metal layer; and a surface treatment layer formed on the lithium metal layer, wherein the surface treatment layer includes a surface treatment compound including a functional group capable of bonding with lithium metal and a hydrocarbon group substituted with one or more fluorine. By being provided with a surface treatment layer including a specific functional group, the lithium electrode improves stability of lithium metal as well as suppressing side reactions on the surface, and thereby allows high capacity, high stability and long lifetime of a lithium secondary battery.
Type:
Grant
Filed:
March 13, 2018
Date of Patent:
September 28, 2021
Assignee:
LG CHEM, LTD.
Inventors:
Kihyun Kim, Doo Kyung Yang, Taek Gyoung Kim, Jieun Song
Abstract: An aqueous electrolyte composition suitable for a lithium ion battery is provided. The aqueous electrolyte composition contains water, an ionic liquid which is a salt of a protonic cation and an anion comprising a fluoroalkylsulfonyl group and a lithium fluoroalkylsulfonyl salt. A lithium ion battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.
Type:
Grant
Filed:
July 28, 2017
Date of Patent:
September 28, 2021
Assignee:
TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Abstract: An illustrative example fuel cell assembly includes at least one cooler and a plurality of fuel cells each having an anode and a cathode. Each of the anodes includes an anode flow plate configured to allow fuel to flow through the anode. The anode flow plates have a respective flow resistance that varies among at least some of the anodes based on a distance between the corresponding anode and the cooler.
Abstract: The present invention relates to a negative electrode active material which includes a secondary particle including a first particle which is a primary particle, wherein the first particle includes a first core and a first surface layer which is disposed on a surface of the first core and contains carbon, and the first core includes a metal compound which includes one or more of a metal oxide and a metal silicate and one or more of silicon and a silicon compound; a method of preparing the same; an electrode including the same; and a lithium secondary battery including the same.
Type:
Grant
Filed:
June 2, 2017
Date of Patent:
September 28, 2021
Assignee:
LG CHEM, LTD.
Inventors:
Jung Hyun Choi, Yong Ju Lee, Eun Kyung Kim
Abstract: An on-vehicle battery pack in which a battery module is housed with a gas release plane facing an inner surface of a sidewall portion of a pack case with a space therebetween, and a restriction plate includes a first plate portion protruding toward the sidewall portion at a height position higher than at least an upper edge of the gas release plane, and a second plate portion extending downwards in the space continuously from a front edge of the first plate portion in a direction in which the first plate portion protrudes.
Abstract: A semiconductor structure is provided that contains a non-volatile battery which controls gate bias. The non-volatile battery has a stable voltage and thus the structure may be used in neuromorphic computing. The semiconductor structure may include a semiconductor substrate including at least one channel region that is positioned between source/drain regions. A gate dielectric material is located on the channel region of the semiconductor substrate. A battery stack is located on the gate dielectric material. In accordance with the present application, the battery stack includes, an anode current collector located on the gate dielectric material, an anode region located on the anode current collector, an ion diffusion barrier material located on the anode region, an electrolyte located on the ion diffusion barrier material, a cathode material located on the electrolyte, and a cathode current collector located on the cathode material.
Type:
Grant
Filed:
November 30, 2017
Date of Patent:
September 28, 2021
Assignee:
International Business Machines Corporation
Inventors:
Ning Li, Joel P. de Souza, Yun Seog Lee, Devendra K. Sadana
Abstract: The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a current collector; a first active material layer disposed on the current collector and including at least one concave portion exposing a portion of the current collector; a stress-relaxing portion disposed in the concave portion; and a second active material layer disposed on the first active material layer and the stress-relaxing portion and separated from the current collector, and a secondary battery including the same.
Abstract: Improved oxygen reduction reaction catalysts include octahedral nanoparticles of a platinum-copper-nickel alloy contacted by a secondary ionomer. The alloy can have a formula of Pt2CuNi, and the secondary ionomer can include an ionic liquid, 1-methyl-2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidin-9-ium 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate ([MTBD][C4F9SO3]). The oxygen reductions catalysts have improved stability, as well as mass area and specific area comparted to competing catalysts.
Type:
Grant
Filed:
July 9, 2018
Date of Patent:
June 22, 2021
Assignees:
Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha, The University of Akron
Inventors:
Kan Huang, Li Q. Zhou, Hongfei Jia, Hisao Kato, Zhenmeng Peng, Xiaochen Shen
Abstract: Provided are poly(arylamine)s. The polymers can be redox active. The polymers can be used as electrode materials in, for example, electrochemical energy storage systems. The polymers can be made by electropolymerization on a conducting substrate (e.g., a current collector).
Type:
Grant
Filed:
August 8, 2016
Date of Patent:
June 15, 2021
Assignee:
CORNELL UNIVERSITY
Inventors:
Thanh-Tam Truong, Hector D. Abruna, Geoffrey W. Coates, Brett P. Fors
Abstract: The present invention provides a polymer electrolyte membrane having excellent strength, a small dimensional change, and a low membrane resistance. The polymer electrolyte membrane includes a porous film having pores and a polymer electrolyte contained in the pores. The porous film is obtained by copolymerizing tetrafluoroethylene and an ethylenic comonomer to provide polytetrafluoroethylene and then stretching the polytetrafluoroethylene. The porous film has an average pore size of greater than 0.20 ?m.
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.
Abstract: Manufacturing apparatus, systems and method of making silicon (Si) nanowires on carbon based powders, such as graphite, that may be used as anodes in lithium ion batteries are provided. In some embodiments, an inventive tumbler reactor and chemical vapor deposition (CVD) system and method for growing silicon nanowires on carbon based powders in scaled up quantities to provide production scale anodes for the battery industry are described.
Abstract: A method for recovering fuel cell performance by regenerating electrode characteristics through electrode reversal in order to partially recover performance of a degraded polymer electrolyte fuel cell is provided. The method includes reversing electrodes by supplying an anode of a degraded fuel cell stack with air and supplying a cathode thereof with hydrogen and performing a pulse operation by applying current to the reversed electrodes.
Abstract: Provided are a positive electrode active material for nonagueous secondary batteries, the material having a narrow particle-size distribution and a monodisperse property and being capable of increasing a battery capacity; an industrial production method thereof; and a nonaqueous secondary battery using the positive electrode active material and having excellent electrical characteristics. The positive electrode active material is represented by a general formula: Li1+uNixCoyMnzMtO2+? (wherein, 0.05?u?0.95, x+y+z+t=1, 0?x?0.5, 0?y?0.5, 0.5?z<0.8, 0?t?0.1, and M is an additive element and at least one element selected from Mg, Ca, Al, Ti, V, Cr, Zr, Nb, Mo, and W), has an average particle diameter of 3 to 12 um, and has [(d90?d10)/average particle diameter], an index indicating a scale of particle-size distribution, of 0.60 or less.
Abstract: An ion-conducting membrane includes: (i) a first ion-conducting layer including one or more first ion-conducting polymers; and (ii) a barrier layer including graphene-based platelets.
Type:
Grant
Filed:
July 10, 2013
Date of Patent:
October 20, 2020
Assignee:
Johnson Matthey Fuel Cells Limited
Inventors:
Jonathan Charles Frost, Jonathan David Brereton Sharman, Nadia Michele Permogorov