Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: Disclosed is a positive electrode composition for a lithium secondary battery and a secondary lithium battery using the same. The positive electrode composition for a lithium secondary battery includes a positive active material, a binder, and a compound represented by the following Chemical Formula 1. The above Chemical Formula 1 is the same as defined in the detailed description.

Abstract: A negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer including a negative active material on the current collector. A rechargeable lithium battery includes the negative electrode. The negative active material includes amorphous carbon with an average aspect ratio of 1.1 to 6, included in an amount of about 55.5 wt % to about 99.5 wt % based on the total weight of the negative active material layer.

Abstract: The present invention generally relates to electrodes for use in lead-acid battery systems, batteries and electrical storage devices thereof, and methods for producing the electrodes, batteries and electrical storage devices. In particular, the electrodes comprise active battery material for a lead-acid storage battery, wherein the surface of the electrode is provided with a coating layer comprising a carbon mixture containing composite carbon particles, wherein each of the composite carbon particles comprises a particle of a first capacitor carbon material combined with particles of a second electrically conductive carbon material. The electrical storage devices and batteries comprising the electrodes are, for example, particularly suitable for use in hybrid electric vehicles requiring a repeated rapid charge/discharge operation in the PSOC, idling-stop system vehicles, and in industrial applications such as wind power generation, and photovoltaic power generation.

Abstract: Irreversible capacity which causes a decrease in the charge and discharge capacity of a power storage device is reduced, and electrochemical decomposition of an electrolyte solution and the like on a surface of an electrode is inhibited. Further, the cycle characteristics of the power storage device is improved by reducing or inhibiting a decomposition reaction of the electrolyte solution and the like occurring as a side reaction in repeated charging and discharging of the power storage device. A power storage device electrode includes a current collector and an active material layer that is over the current collector and includes a binder and an active material. A coating film is provided on at least part of a surface of the active material. The coating film is spongy.

Abstract: To improve the long-term cycle performance of a lithium-ion battery or a lithium-ion capacitor by minimizing the decomposition reaction of an electrolytic solution and the like as a side reaction of charge and discharge in the repeated charge and discharge cycles of the lithium-ion battery or the lithium-ion capacitor. A current collector and an active material layer over the current collector are included in an electrode for a power storage device. The active material layer includes a plurality of active material particles and silicon oxide. The surface of one of the active material particles has a region that is in contact with one of the other active material particles. The surface of the active material particle except the region is partly or entirely covered with the silicon oxide.

Abstract: A positive electrode for a nonaqueous secondary battery including an active material layer which has sufficient electron conductivity with a low ratio of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery including an active material layer which is highly filled with an active material, id est, including the active material and a low ratio of a conductive additive. The active material layer includes a plurality of particles of an active material with a layered rock salt structure, graphene that is in surface contact with the plurality of particles of the active material, and a binder.

Abstract: An object of the present invention is to eliminate deviation in the quality of a chromate film provided on a copper foil for a negative electrode current collector to eliminate fluctuation of electric capacity in a lithium ion secondary battery. To achieve the object, as the copper foil for a negative electrode current collector of a lithium ion secondary battery, a copper foil provided with a chromate film for a negative electrode current collector in which Cr(OH)3 constitutes 85 area % or more of the chromate film is employed. Further, the copper foil provided with a chromate film for a negative electrode current collector according to the present application is preferable to be that the apparent orientation number N of oxygen closest to chrome in the chromate film is 4.5 or more.

Abstract: A method of making a single carbon sheet for an electrode includes mixing activated carbon; adding a dispersion comprising a PTFE binder and water to the activated carbon to form a mixture; adding the mixture to a jet mill, and fibrillating the PTFE binder; and feeding the mixture with fibrillated PTFE to a roll mill to form a single carbon sheet in a single pass.

Abstract: The present invention addresses the problem of providing an electrode-forming composition, which is used for the purpose of producing a secondary battery that has excellent charge and discharge cycle characteristics, and which exhibits excellent dispersibility of an active material and a conductive assistant. The problem is solved by a composition for forming a secondary battery electrode, which contains (A) an electrode active material and/or (B) a carbon material that serves as a conductive assistant, (C) an amphoteric resin-type dispersant that is obtained by neutralizing at least some carboxyl groups in a copolymer containing aromatic rings, carboxyl groups and amino groups with a basic compound, and (D) an aqueous liquid medium.

Abstract: Provided is a lithium ion secondary battery capable of realizing a high energy density while maintaining output. A lithium ion secondary battery D1 according to the present invention includes an electrode having an active material mix layer 31 on both surfaces of a current collector 35. The active material mix layer 31 has a smaller void ratio in a current collector side region 34 of the active material mix layer 31 and a surface side region 32 of the active material mix layer 31 than in an intermediate region 33 between the current collector side region 34 and the surface side region 32 of the active material mix layer 31.

Abstract: A particulate composite of silicon, tin, and aluminum (or other suitable metal) is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery or a lithium-sulfur battery. This electrode material is formed such that the silicon is present as a distinct amorphous phase in separate matrix phases of crystalline tin and crystalline aluminum. While the distinct tin and aluminum phases provide electron conductivity, each phase accommodates the insertion and extraction of lithium in the operation of the cell and all phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. Other suitable metals for use in the composite with silicon and tin include copper and titanium.

Abstract: A secondary-battery current collector comprising an aluminum foil and a film containing an ion-permeable compound and carbon fine particles formed thereon or a secondary-battery current collector comprising an aluminum foil, a film containing an ion-permeable compound and carbon fine particles formed thereon as the lower layer, and a film containing a binder, carbon fine particles and a cathodic electroactive material formed thereon as the upper layer, a production method of the same, and a secondary battery having the current collector are provided.

Abstract: The present invention relates to a positive active material for a lithium sulfur battery and a lithium sulfur battery comprising the same, and the positive active material for a lithium sulfur battery comprises a core comprising Li2S and a carbon layer formed on the surface of the core.

Abstract: The invention provides an active material for nonaqueous electrolyte secondary batteries which contains a silicon oxide as an active material and can suppress the generation of gas during storage at high temperatures, a method for producing such active materials, a negative electrode for nonaqueous electrolyte secondary batteries including the active material, and a nonaqueous electrolyte secondary battery including the negative electrode. An active material for nonaqueous electrolyte secondary batteries is used which includes a silicon oxide having a surface coated with a polyacrylonitrile or a modified product thereof that has been heat treated.

Abstract: Electrode structures and electrochemical cells are provided. The electrode structures and/or electrochemical cells described herein may include one or more protective layers comprising a polymer layer and/or a gel polymer electrolyte layer. The polymer layer may be formed from the copolymerization of an olefinic monomer comprising at least one electron withdrawing group and an olefinic comonomer comprising at least one electron donating group. Methods for forming polymer layers are also provided.

Abstract: An active material for a secondary battery, a secondary battery including the active material, and a method of preparing an active material, the active material including a silicon-based core; and an aluminum-based coating layer on at least a part of the silicon-based core.

Abstract: An all-solid state secondary cell which has a positive electrode active material layer, negative electrode active material layer, and solid electrolyte layer, wherein at least one of said positive electrode active material layer, said negative electrode active material layer, and said solid electrolyte layer includes an inorganic solid electrolyte and a binder comprised of an average particle size 30 to 300 nm particulate-shaped polymer and said particulate-shaped polymer is present in said positive electrode active material layer, said negative electrode active material layer, and said solid electrolyte layer in a state holding the particulate state, is provided.

Abstract: Embodiments of the present disclosure provide for a structure, methods of making the structure, methods of using the structure, and the like. In particular, the structure includes a porous germanium layer, where the porous germanium layer includes a porous network that improves the performance of the structure.

Abstract: The present application discloses a lithium-rich anode material, a lithium battery anode, and a lithium battery, where the structural formula of the lithium-rich anode material is as follows: z[xLi2MO3.(1-x)LiMeO2].(1-z)Li3-2yM?2yPO4, where 0<x<1, 0<y<1, 0<z<1; M is at least one of elements Mn, Ti, Zr, and Cr, Me is at least one of elements Mn, Co, Ni, Ti, Cr, V, Fe, Al, Mg, and Zr, and M? is at least one of elements Fe, Co, Ni, V, Mg, and Mn. Both the lithium battery anode and the lithium battery include the lithium-rich anode material. Because of the high capability of withstanding high voltages, the high initial charge-discharge efficiency, and the safety of the lithium-rich anode material, the lithium battery has excellent energy density, discharge capacity, cycle life, and rate performance.

Abstract: The present invention provides a lithium secondary battery having a great output power in a low SOC range and a positive electrode active material for use in the battery The battery comprises a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode comprises a positive electrode active material in a form of secondary particles as aggregates of primary particles of a lithium transition metal oxide. The positive electrode active material comprises at least one species of Ni, Co and Mn, and further comprises W and Mg. The W is present, concentrated on surfaces of the primary particles while the Mg is present throughout the primary particles. The Mg content in the positive electrode active material is higher than 50 ppm relative, to the total amount of the active material based on the mass.

Abstract: Disclosed is a high-energy lithium secondary battery including: a cathode including, as cathode active materials, a first cathode active material represented by Formula 1 below and having a layered structure and a second cathode active material represented by Formula 2 below and having a spinel structure, wherein the amount of the first cathode active material is between 40 and 100 wt % based on a total weight of the cathode active materials; an anode including amorphous carbon having a capacity of 300 mAh/g or more; and a separator.

Abstract: Graphene-carbon nanotube multi-stack three-dimensional architectures (graphene-CNT stacks) are formed by a “popcorn-like” growth method, in which carbon nanotubes are grown throughout the architecture in a continuous step. Alternating layers of graphene and a transition metal are grown by a vapor deposition process. The metal is fragmented and etched to form an array of catalytic sites. Carbon nanotubes grow from the catalytic sites in a vapor-solid-liquid process. The graphene-CNT stacks have applications in electrical energy storage devices, such as supercapacitors and batteries. The directly grown carbon nanotube array between graphene layers provides ease of ion diffusion and electron transfer, in addition to being an active material, spacer and electron pathway.

Abstract: It is intended to provide a positive electrode active material, which contains a lithium silicate based compound and has superior conductivity, for nonaqueous electrolyte secondary battery, a process for producing the same, and a nonaqueous electrolyte secondary battery using the positive electrode active material. The lithium silicate based compound and a carbon material are mixed at 450 to 16000 rpm for 1 minute to 10 hours and then heated and pressurized at 500° C. to 700° C. at 1 to 500 MPa for 1 minute to 15 hours, thereby adhering the lithium silicate based compound and the carbon material to each other.

Abstract: The present invention provides an aligned carbon nanotube assembly constituted of carbon nanotubes each having a defective pore on its side surface, a method of manufacturing the aligned carbon nanotube assembly, a carbon-based electrode, and a power storage device. The aligned carbon nanotube assembly is formed by aggregating a large number of carbon nanotubes aligned in parallel along the same direction and having parallel orientation. In such a state that the aligned carbon nanotube assembly remains grown, the carbon nanotube constituting the aligned carbon nanotube assembly has a defective pore on its side surface. In a raman spectrum of the aligned carbon nanotube assembly in a Raman spectrometric method, when intensity of scattered light in D-band is represented by ID and intensity of scattered light in G-band is represented by IG, an ID/IG ratio is not less than 0.80.

Abstract: A battery plate assembly for a lead-acid battery is disclosed. The assembly includes a plates of opposing polarity each formed by an electrically conductive grid body having opposed top and bottom frame elements and opposed first and second side frame elements, the top frame element having a lug and an opposing enlarged conductive section extending toward the bottom frame element; a plurality of interconnecting electrically conductive grid elements defining a grid pattern defining a plurality of open areas, the grid elements including a plurality of radially extending vertical grid wire elements connected to the top frame element, and a plurality of horizontally extending grid wire elements, the grid body having an active material provided thereon. A highly absorbent separator is wrapped around at least a portion of the plate of a first polarity and extends to opposing plate faces. An electrolye is provided, wherein substantially all of the electrolyte is absorbed by the separator or active material.

Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent electron conductivity. The present invention solves the problem by providing the solid electrolyte material including: a solid electrolyte particle; and a carbon coating layer formed on a surface of the solid electrolyte particle.

Abstract: The invention relates to a method for preparing a polyacrylonitrile-sulfur composite material, in which, polyacrylonitrile is converted to cyclized polyacrylonitrile, and the cyclized polyacrylonitrile is reacted with sulfur to form a polyacrylonitrile-sulfur composite material. By a separation of the preparation method into two partial reactions, the reaction conditions are advantageously able to be optimized for the respective reactions and a cathode material is able to be provided for alkali-sulfur cells with improved electrochemical properties. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali-sulfur cell or an alkali-sulfur battery as well as to an energy store.

Abstract: A nonaqueous electrolytic solution effective in improving cycle characteristics and used for a nonaqueous electrolyte secondary battery including a positive electrode having a positive-electrode active material capable of storing and releasing metal ions and a negative electrode having a negative-electrode active material containing at least one atom selected from the group consisting of Si, Sn, and Pb includes an electrolyte, a nonaqueous solvent, and an isocyanate compound having at least one aromatic ring in its molecule.

Abstract: An electrochemical apparatus (e.g., a battery (cell)) including an aqueous electrolyte with electrode stabilizing additives and one or two electrodes (e.g., an anode and/or a cathode), one or both of which is a Prussian Blue analogue material of the general chemical formula AxP[R(CN)6-jLj]z.nH2O, where: A is a cation; P is a metal cation; R is a transition metal cation, L is a ligand that may be substituted in the place of a CN? ligand; 0?x?2; 0?z?1; and 0?n?5 with the electrolyte including an additive to reduce capacity loss of the electrode(s).

Abstract: An electrochemical device (e.g., a battery (cell)) including: an aqueous electrolyte and one or two electrodes (e.g., an anode and/or a cathode), one or both of which is a Prussian Blue analogue material of the general chemical formula AxP[R(CN)6-jLj]z.nH2O, where: A is a cation; P is a metal cation; R is a transition metal cation; L is a ligand that may be substituted in the place of a CN? ligand; 0?x?2; 0?z?1; and 0?n?5, the electrode including a polymer coating to reduce capacity loss.

Abstract: The metal-air battery system of this invention has a detachable anode compartment and cathode compartment for producing electric current, wherein the anode compartment and the cathode compartment are pressed into contact when the battery is put in use to generate electric power; and the anode compartment and the cathode compartment are separated when the battery is not in use to generate electric power. The anode compartment also has an injection device to inject water mist to maintain the moisture level of the metal gel inside the anode compartment. The metal-air battery system of this invention will extend the battery storage life significantly as compared to conventional metal-air battery. In addition, the metal-air battery system of this invention makes replacing anode conveniently so that the battery system can be re-used continuously.

Abstract: There is provided an electrolyte solution including a solvent formed from a sulfone, and a magnesium salt dissolved in the solvent.

Abstract: An air electrode for use in an air battery includes at least a conductive material and an inorganic fluoride, with the inorganic fluoride being included in a ratio of from 11 to 22 wt % per 100 wt % of the conductive material and the inorganic fluoride combined.

Abstract: The present invention relates to a lithium-air battery, and more particularly, to a lithium-air battery which comprises a gas diffusion-type positive electrode formed in a portion thereof contacting air, and which employs a low-volatility electrolyte, thus exhibiting the effect of preventing volatilization of the electrolyte, thereby enabling the battery to be used over a long period of time without safety problems and without degradation of the charging/discharging characteristics of the battery, and the effect of air flowing into the battery being provided in a quicker and more uniform manner while passing through the gas diffusion-type positive electrode, thus improving the performance of the battery.

Abstract: A method of operating a hydrogen generator includes: a step (a) of generating a hydrogen-containing gas by a hydrogen generation unit by using a raw material in the hydrogen generation unit; a step (b) of removing a sulfur compound from the raw material by a hydrodesulfurizer which is heated by heat transferred from the hydrogen generation unit; and a step (c) of performing an operation of supplying the raw material to the hydrogen generation unit after stopping the generating of the hydrogen-containing gas by the hydrogen generation unit. The step (c) is not performed unless, at least, a temperature of the hydrodesulfurizer is such a temperature at which carbon deposition from the raw material is suppressed.

Abstract: When terminating power generation by a fuel cell 3 in a fuel cell system 1, an amount of a raw fuel material introduced to a reforming catalyst 2a of a reformer 2 is reduced. Here, before the temperature of the reforming catalyst 2a is lowered to the un-reformed gas generation temperature, an amount of water supplied to the reforming catalyst 2a is controlled to increase the temperature of the reforming catalyst 2a. Thus, upon termination of power generation in the fuel cell 3, no un-reformed gas is generated and the reformed gas is supplied to the fuel cell 3.

Abstract: The compact fuel cell which can efficiently perform heating and can be repeatedly used includes a solid electrolyte, an anode that is formed on one surface of the solid electrolyte, a cathode that is formed on another surface of the solid electrolyte, an anode fuel material, a heating portion for heating and maintaining the solid electrolyte and the anode fuel material at a temperature equal to or higher than a predetermined level, and a sealing portion that is installed in the solid electrolyte, forms a sealed space sealing the anode and the anode fuel material together with the solid electrolyte and the heating portion, and can repeatedly open and close, in which a helium leak rate of the sealed space is maintained at 1×10?2 Pa·m3/sec or a lower rate.

Abstract: A cooling apparatus for a fuel cell is provided. The cooling apparatus for a fuel cell includes a reservoir that is configured to store a coolant and an ion filter assembly that is integrally installed at the reservoir and configured to remove bubbles in the coolant.

Abstract: An electrochemical cell structure has an electrical current-carrying structure which, at least in part, underlies an electrochemical reaction layer. The cell comprises an ion exchange membrane with a catalyst layer on each side thereof. The ion exchange membrane may comprise, for example, a proton exchange membrane. Some embodiments of the invention provide electrochemical cell layers which have a plurality of individual unit cells formed on a sheet of ion exchange membrane material.

Abstract: Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.

Abstract: Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.

Abstract: Various embodiments include interconnects and/or end plates having features for reducing stress in a fuel cell stack. In embodiments, an interconnect/end plate may have a window seal area that is recessed relative to the flow field to indirectly reduce stress induced by an interface seal. Other features may include a thicker protective coating and/or larger uncoated area of an end plate, providing a recessed portion on an end plate for an interface seal, and/or recessing the fuel hole region of an interconnect relative to the flow field to reduce stress on the fuel cell. Further embodiments include providing intermittent seal support to minimize asymmetric seal loading and/or a non-circular seal configuration to reduce stress around the fuel hole of a fuel cell.

Abstract: A method of deposition, by drop-on-demand inkjet printing, of the catalytic layer of a fuel cell comprising the deposition, on a printing surface, of an ink generating substantially circular structures comprising a bead at their periphery.

Abstract: A microporous layer sheet for a fuel cell according to the present invention includes at least two microporous layers, which are stacked on a gas diffusion layer substrate, and contain a carbon material and a binder. Then, the microporous layer sheet for a fuel cell is characterized in that a content of the binder in the microporous layer as a first layer located on the gas diffusion layer substrate side is smaller than contents of the binder in the microporous layers other than the first layer. The microporous layer sheet for a fuel cell, which is as described above, can ensure gas permeability and drainage performance without lowering strength. Hence, the microporous layer sheet for a fuel cell, which is as described above, can contribute to performance enhancement of a polymer electrolyte fuel cell by application thereof to a gas diffusion layer.

Abstract: A cathode for a solid oxide fuel cell, the cathode including: a mixed ionic-electronic conductor having a structure in a form of a pattern.

Abstract: There is provided a reinforcing material equipped with a cohesive/adhesive layer, having a proper initial adhesion force to an adherend, such as an electrolyte membrane, a catalyst layer and a gas diffusion layer, and which can be temporarily fixed readily. A reinforcing material produced by forming a cohesive/adhesive layer on a substrate. The cohesive/adhesive layer includes an aliphatic polyamide, an epoxy resin and a polythiol. When the reinforcing material is used, it becomes possible to correct the position of an adherend after the adhesion of the reinforcing material to the adherend. In addition, it can prevent the formation of wrinkles on the adherend or the like upon the adhesion of the reinforcing material. Therefore, a catalyst layer laminated membrane or the like which has a reinforcing material attached thereto can be produced readily without requiring the employment of any highly skilled technique.

Abstract: Methods using novel cathode, electrolyte and oxygen separation materials operating at intermediate temperatures for use in solid oxide fuel cells and ion transport membranes include oxides with perovskite related structures and an ordered arrangement of A site cations. The materials have significantly faster oxygen kinetics than in corresponding disordered perovskites.

Abstract: Fuel feed systems capable of providing substantially consistent flow of fuel to a fuel cell and also capable of tolerating varying pressures from a reservoir (also referred to as fuel supply or fuel cell cartridge) and the fuel cell while maintaining substantially consistent control flow to the fuel cell are disclosed.

Abstract: A photopolymer composition includes a polymer binder; a monomer for holographic recording; a photoinitiation system including an electron acceptor, at least one of an electron donor and a hydrogen atom donor, and a dye-sensitizer; and a solvent. The monomer for holographic recording includes N-acryloylthiomorpholine.