Abstract: A storage element for a solid electrolyte battery is provided, having a main member of a porous ceramic matrix in which particles, that are made of a metal and/or a metal oxide and jointly form a redox couple, are embedded, the particles having a lamellar shape.

Abstract: Disclosed are a cathode active material for secondary batteries and a lithium secondary battery including the same. More particularly, a cathode active material for secondary batteries having an operating voltage area of 2.50 V to 4.35 V, including a lithium cobalt-based oxide and a surface-treated lithium nickel-based oxide and having high rolling density by a bimodal form in which an average diameter of the cobalt-based oxide and an average diameter of the lithium nickel-based composite oxide are different, and a lithium secondary battery including the same are disclosed.

Abstract: A doped spinel comprising the formula: Li1±wMe1vMe2x-vMn2-x-yTiyO4-zFz where, 0?w<1, 0.3<x?0.7, 0.3?v<0.7, x>v, 0.0001?y?0.35, and 0.0001?z?0.3. Me1 is a metal selected from a group of elements consisting of Cr, Fe, Co, Ni, Cu, and Zn. Me2 is a metal selected from a group of elements consisting of Ni, Fe, Co, Mg, Cr, V, Ru, Mg, Al, Zn, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and B.

Abstract: In an example of the method disclosed herein, a precipitate is formed in an aqueous mixture by mixing an SiOx precursor and an acid. The precipitate and a carbon material are added to a base, and the precipitate dissolves to form a solution having the carbon material therein. Hydrothermal synthesis is performed using the solution, and precursor nanostructures are grown on the carbon material. The precursor nanostructures on the carbon material are annealed so that the carbon material is removed and porous, one-dimensional SiOx (0<x?2) nanorods are formed.

Abstract: A method for producing an electrode comprising a core-shell nanocomposite material of which the core is made from silicon and the shell from carbon is provided. The method includes A) synthesising the nanocomposite material by pyrolysing a silicon core to form a core and then pyrolysing a a carbon shell precursor to form a carbon shell around the core, wherein the quantities of silicon and carbon precursor are injected in a proportion such that the mass percentage of carbon in the nanocomposite material is greater than or equal to 45%; B) dispersing the nanocomposite material synthesised in step A) in a solvent to form an ink; C) applying this ink to a support intended to form an electricity collector; D) eliminating the solvent from the ink applied to the support in step C) to obtain the electrode; E) pressing or calendaring the electrode.

Abstract: An active material for an electrochemical device wherein a surface of the active material is modified by a surface modification agent, wherein the surface modification agent is an organometallic compound.

Abstract: A method for making a lithium ion battery anode active material comprising: providing silicon particles and a silane coupling agent, wherein the silane coupling agent comprises a hydrolysable functional group and an organic functional group; mixing the silicon particles and the silane coupling agent in water to obtain a first mixture; adding a monomer or oligomer to the first mixture to obtain a second mixture, the surfaces of the silicon particles being coated with a polymer layer by in situ polymerization method to obtain silicon polymer composite material, the monomer or the oligomer reacting with the organic functional group of the silane coupling agent in a polymerization, thereby a generated polymer layer being chemically grafted on the surfaces of the silicon particles; and heating the silicon polymer composite material to carbonize the polymer layer to form a carbon layer coated on the surfaces of the silicon particles.

Abstract: Stabilized lithium powder according to an embodiment of this disclosure contains lithium particles and transition metal. Each lithium particle has a stabilized film on a surface thereof; the stabilized film contains an inorganic compound; and main transition metal, which is contained the most in the transition metal, is contained by 0.5 ×10?3 wt % or more and 11.5×10?3 wt % or less.

Abstract: The present invention is a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least a silicon-silicon oxide composite and a carbon coating formed on a surface of the silicon-silicon oxide composite, wherein at least the silicon-silicon oxide composite is doped with lithium, and a ratio I(SiC)/I(Si) of a peak intensity I(SiC) attributable to SiC of 2?=35.8±0.2° to a peak intensity I(Si) attributable to Si of 2?=28.4±0.2° satisfies a relation of I(SiC)/I(Si)?0.03, when x-ray diffraction using Cu-K? ray. As a result, there is provided a negative electrode material for a secondary battery with a non-aqueous electrolyte that is superior in first efficiency and cycle durability to a conventional negative electrode material.

Abstract: A method of preparing a positive active material for a lithium secondary battery represented by the following Chemical Formula 1 (LiwNixCoyMn1-x-y-zMzO2) includes: (a) preparing a metal salt aqueous solution including a lithium raw material, a manganese raw material, a nickel raw material, and a cobalt raw material; (b) wet-pulverizing the metal salt aqueous solution using beads having a particle diameter of 0.05 to 0.30 mm at 2000 to 6000 rpm for 2 to 12 hours to prepare a slurry; (c) adding a carbon source to the slurry; (d) spray-drying the slurry of the step (c) to prepare a mixed powder; and (e) heat-treating the mixed powder.

Abstract: A process for producing lithium titanate which includes the steps of synthesizing a lithium titanate hydrate intermediate via aqueous chemical processing, and thermally treating the lithium titanate hydrate intermediate to produce the lithium titanate. The lithium titanate hydrate is preferably (Li1.81H0.19)Ti2O<<2H2O. The lithium titanate is preferably Li4Ti5O12 (LTO). Synthesizing the lithium titanate hydrate intermediate may include mixing a titanium-containing compound with a lithium-containing compound in a solvent to produce a lithium-titanium precursor mixture. Preferably the titanium-containing compound includes titanium tetrachloride TiCl4. Also, a lithium titanate obtained according to the process and a lithium battery including the lithium titanate.

Abstract: Disclosed is a lithium secondary battery including an electrode assembly including a cathode, an anode, and a separator disposed between the cathode and the anode and an electrolyte, wherein the anode includes a lithium titanium oxide (LTO) as an anode active material, and the lithium secondary battery has a charge cut-off voltage of 3.3 to 4 V and, when the charge cut-off voltage is reached, the anode has a potential of 0.75 to 1.545 V within a range within which a potential of the cathode does not exceed 4.95 V.

Abstract: Provided is a method for preparing a positive electrode active material for a lithium secondary battery, the method comprising: mixing and reacting a nickel source, a cobalt source, and an aluminum source, ammonia water, sucrose, and a pH adjusting agent to prepare a mixed solution; drying and oxidizing the mixed solution to prepare a positive electrode active material precursor; and adding a lithium source to the positive electrode active material precursor and firing them to prepare a positive electrode active material for a lithium secondary battery.

Abstract: A positive electrode active material contains a compound represented by a chemical formula LiVOPO4. A crystal system of the compound is an orthorhombic system, and the amount of tetravalent V of the compound is 27.7 mass % or more and 28.2 mass % or less.

Abstract: A secondary battery includes: a cathode including an active material; an anode; and an electrolytic solution, and the active material includes a plurality of active material particles as primary particles and a carbon material. The active material particles contain a polyanion-based compound. The carbon material contains a first carbon material present on surfaces of the active material particles, and a second carbon material present between the active material particles provided with the first carbon material. A ratio B/A between a total carbon amount A and a surface carbon amount B of the active material satisfies 7<B/A<11.5. A ratio D/C between a specific surface area C of the active material, and an oil feed amount D of N-methyl-2-pyrrolidone satisfies 1.5<D/C?2.

Abstract: A negative-electrode active material for a sodium-ion secondary battery contains a porous carbon material which has a plurality of open pores that extend through to the surface, a plurality of closed pores that do not extend through to the surface, and a solid made of carbon material. The distance between (002) planes of the solid portion is not less than 0.340 nm and not more than 0.410 nm. The plurality of closed pores account for a volume ratio of not less than 0% and not more than 10% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion. The plurality of open pores account for a volume ratio of not less than 0% and not more than 50% with respect to a total volume of the plurality of open pores, the plurality of closed pores, and the solid portion.

Abstract: An apparatus and method for manufacturing an electricity storage material are provided which allow easily measuring the dissolution rate to solubility of a solution of a powder thickener dissolved in a liquid solvent. An apparatus for manufacturing an electricity storage material includes: a dissolving device that dissolves in a liquid solvent a thickener as powder that is ionized when dissolved; and a dissolution-rate-to-solubility determining device that measures conductivity of the solution produced by the dissolving device and determines a dissolution rate to solubility of the solution based on the measured conductivity. The dissolution rate to solubility can thus be determined without the need to stop the dissolving device during dissolution of the thickener in the liquid solvent. This can significantly improve production efficiency. Since excessive operation of the dissolving device can be prevented, energy saving can be achieved.

Abstract: Provided is a nonaqueous electrolyte secondary cell in which heat generation is suppressed. The nonaqueous electrolyte secondary cell according to the invention has a positive electrode including positive electrode active material particles and a negative electrode including negative electrode active material particles. The negative electrode active material particles are carbon-black-adhered carbon-based negative electrode active material particles which are constituted by a carbon material having a graphite structure in at least part thereof and which have carbon black (CB) particles that have adhered to at least part of a surface portion. The positive electrode active material particles are of a hollow structure having a shell and a hollow portion.

Abstract: The present invention provides an aluminum alloy foil, capable of going under thin rolling during its manufacture. The aluminum alloy foil shall also avoid cuts during the active material paste coating process and wrinkles during the press working process, and have suitable strength for the series of manufacturing processes from the manufacture of the aluminum alloy foil to the manufacture of the electrode material. Further, the present invention provides an aluminum alloy foil for electrode current collector, including 0.50 to 1.50 mass % (hereinafter mass % is referred to as %) of Mn, 0.05 to 0.50% of Cu, 0.20 to 1.00% of Fe, 0.01 to 0.60% of Si, with the rest consisting of Al and unavoidable impurities, a manufacturing method thereof, and an electrode material. Here, regarding the aluminum alloy foil, a solid solution amount of Mn is 1500 ppm or more, a solid solution amount of Cu is 40 ppm or more, and a tensile strength after a final cold rolling (T1) is 260 MPa or higher and 350 MPa or lower.

Abstract: The present disclosure refers to a secondary battery comprising a reinforcing material in the fore part of an electrode current collector used in a jelly-roll type electrode assembly, thereby making the jelly-roll type electrode assembly wound in the predetermined position and eventually solving the problem an internal short-circuit due to biased movement.

Abstract: Provided are a metal foil, a metal foil manufacturing method and a method for manufacturing an electrode using the same, in which the adhesion between the metal foil and a conductive resin layer and the coating performance of the conductive resin layer can be improved by treating the surface of the metal foil. The metal foil comprises: a metal base substrate; a surface treatment layer formed on at least one surface of the metal base substrate by treating the surface of the metal base substrate; and a conductive resin layer applied to the surface of the surface treatment layer, wherein the surface treatment layer has a surface energy of 34-46 dyne/cm.

Abstract: A storage battery grid includes: a frame bone that includes a substantially rectangular shape; a lug portion that is connected to a first side portion of the frame bone and projects outwardly from the frame bone; a main bone that extends from the first side portion to a second side portion which is opposed to the first side portion; and a plurality of first sub-bones that extend obliquely toward the second side portion, at least part of the plurality of first sub-bones branching from the main bone toward both sides, wherein at least part of the plurality of first sub-bones is bent.

Abstract: According to the present invention, a porous electrode substrate with greater sheet strength, lower production cost, and excellent gas permeability and conductivity as well as its manufacturing method are provided. Also provided are a precursor sheet for forming such a substrate, and a membrane electrode assembly and a polymer electrolyte fuel cell containing such a substrate. The method for manufacturing such a porous electrode substrate includes the following steps [1]˜[3]: [1] a step for manufacturing a sheet material in which short carbon fibers (A) are dispersed; [2] a step for manufacturing a precursor sheet by adding a water-soluble phenolic resin and/or water-dispersible phenolic resin to the sheet material; and [3] a step for carbonizing the precursor sheet at a temperature of 1000° C. or higher.

Abstract: An energy storage device can include a cathode having a first plurality of frustules, where the first plurality of frustules can include nanostructures having an oxide of manganese. The energy storage device can include an anode comprising a second plurality of frustules, where the second plurality of frustules can include nanostructures having zinc oxide. A frustule can have a plurality of nanostructures on at least one surface, where the plurality of nanostructures can include an oxide of manganese. A frustule can have a plurality of nanostructures on at least one surface, where the plurality of nanostructures can include zinc oxide. An electrode for an energy storage device includes a plurality of frustules, where each of the plurality of frustules can have a plurality of nanostructures formed on at least one surface.

Abstract: In accordance with the present disclosure, a method for fabricating a symmetrical solid oxide fuel cell is described. The method includes synthesizing a composition comprising perovskite and applying the composition on an electrolyte support to form both an anode and a cathode.

Abstract: A technology is provided that is capable of improving deterioration of a fuel cell due to non-stationary operation (startup/shutdown, fuel depletion). An anode-side catalyst composition comprising a catalyst having catalyst particles carried on electrically conductive material and an ion exchange resin, characterized in that the catalyst particle are formed of an alloy, of which oxygen reduction capability and water electrolysis are both lower than those of platinum, and which has hydrogen oxidation capability.

Abstract: A low platinum catalyst and method for making same. The catalyst comprises platinum-transition metal bimetallic alloy microcrystallites over a transition metal-nitrogen-carbon composite. A method of making a catalyst comprises preparation of transition metal organic frameworks, infusion of platinum, thermal treatment, and reduction to form the microcrystallites and composite.

Abstract: Microbial fuel cells capable of generating energy from an organic-based fuel are described. The microbial fuel cells can include an anode component, a cathode component, and a separator component selected to reduce spacing between the anode and the cathode thereby improving performance of the microbial fuel cell. Cathode components including particular components that improve the lifetime, performance, and production of the cathode component at reduced cost also are described, as well as a method of using the microbial fuel cells.

Abstract: The present invention relates to an electrochemical cell comprising an anode of a Group IA metal and a cathode of a composite material prepared from an aqueous mixture of iron sulfate, nickel sulfate, and sulfur. The cathode material of the present invention provides for a lithium electrochemical cell having an increased operating voltage and power performance with high discharge capacity as compared to a lithium cell comprising nickel disulfide cathode material. In addition, the cathode material of the present invention exhibits a smaller initial irreversible voltage loss as compared to iron disulfide. This makes the cathode material of the present invention particularly useful for implantable medical applications.

Abstract: The invention provides a water-activated, deferred-action battery having a housing containing at least one cell, comprising at least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; a cathode comprising a skeletal frame including conductive metal and having a portion of its surface area formed as open spaces, and further comprising a heat-pressed, rigid static bed of active cathode material encompassing the skeletal frame, the cathode material comprising basic copper sulfate, said cathode material being compacted and fused to itself and to the skeletal frame under pressure and / or heat, to form a heat-fused, conductive, electrochemically active phase; at least one cavity separating the cathode and the at least one anode, and at least one aperture leading to the at least one cavity for the ingress of an electrolyte-forming, aqueous liquid.

Abstract: An apparatus for manufacturing a membrane-electrode assembly for a fuel cell is provided. The apparatus includes a sub-gasket feeding unit that forms first electrode windows, unrolls a first sub-gasket sheet, and supplies the sheet to a transfer line. An electrode membrane loading unit installed over the transfer line forms electrode catalyst layers on both faces of an electrolyte membrane, collects the electrode membrane sheet cut, and loads the sheets onto first electrode windows. A sub-gasket loading unit installed over the transfer line forms second electrode windows, collects a second sub-gasket sheet, and loads the sheets on the electrode membrane sheet. MEA bonding units installed on the transfer line bond the first sub-gasket sheet, the electrode membrane sheet, and the second sub-gasket sheet mutually stacked while passing the first sub-gasket sheet, the electrode membrane sheet, and the second sub-gasket sheet between a pair of hot rollers along the transfer line.

Abstract: A fuel cell stack has a plurality of laminated cell units, with each of the cell units including a membrane electrode assembly sandwiched between two separators, and cooling fluid passage channels are formed between each adjacent cell units for flowing cooling fluid. Displacement absorbing members have a plurality of displacement absorbing projections that absorb displacement along a laminated direction of the cell unit and are provided in the cooling fluid passage channels. The displacement absorbing projections of the displacement absorbing members are disposed so as to cancel out any bending moments generated on the cell unit.

Abstract: A cathode-side gas flow path of a cell that forms part of a fuel cell is formed by a first expanded metal arranged on a gas inlet side, and a second expanded metal arranged on a downstream side. The first expanded metal is such that mesh is arranged in a straight line, and gas that flows on a gas diffusion layer side is separated from gas that flows on a separator side. The gas flowrate on the gas inlet side is reduced, so the amount of produced water that is carried away is reduced. As a result, the gas inlet side is inhibited from becoming dry at high temperatures.

Abstract: A gas diffusion layer having a first major surface and a second major surface which is positioned opposite to said first major surface and an interior between said first and second major surfaces is formed. The gas diffusion layer comprises a porous carbon substrate which is directly fluorinated in the interior and is substantially free of fluorination on at least one of the first major surfaces or the second major surfaces, and preferably both surfaces. The gas diffusion layer may be formed using protective sandwich process during direct fluorination or by physically or chemically removing the C—F atomic layer at the major surfaces, for example by physical plasma etching or chemical reactive ion etching.

Abstract: In aspects of the disclosure, a fuel cartridge wherein the fuel is in a powdered form is admixed with inert materials such as alumina or other ceramics to improve thermal conductivity. Said cartridge having fuel zones, heating zones, and controllers to selectively heat fuel zones and thereby generate hydrogen via decomposition of fuel is disclosed.

Abstract: A fuel cell system 10 includes a fuel cell 20, gas supply systems 30, 40, which supply gases to the fuel cell 20, and a controller 60, which controls the gas supply systems 30, 40. During a non-operation period of the fuel cell 20, the controller 60 controls the gas supply systems 30, 40 to carry out the scavenging treatment. If the scavenging treatment is interrupted by an operation performed by a user, then the controller 60 controls the gas supply systems 30, 40 and restarts the scavenging treatment after a predetermined time elapses from the interruption.

Abstract: A method for operating a fuel cell system includes detecting a pressure in a fuel supply path located downstream of a pressure reducing valve using a pressure sensor. Whether or not the pressure detected by the pressure sensor exceeds a predetermined threshold pressure is determined. The pressure in the fuel supply path located downstream of the pressure reducing is reduced when the pressure detected by the pressure sensor exceeds the predetermined threshold pressure.

Abstract: As integrated fossil fuel power plant and a method of operating the power plant is provided. The integrated fossil fuel power plant includes a gas turbine arrangement and a carbonate fuel cell having an anode side and a cathode side. The operating method for the integrated fossil fuel power plant includes partially expanding combustion gases in the gas turbine arrangement so that the temperature of the partially expanded combustion gases is optimized for reaction in the cathode side of the carbonate fuel cell, and feeding the partially expanded combustion gases at the optimized temperature to the cathode side of the carbonate fuel cell for reaction in the cathode side of the carbonate fuel cell.

Abstract: A process for manufacturing membrane electrode units (MEU) for fuel cell is disclosed, said MEU have two electrochemically active electrodes which are separated by a polymer electrolyte membrane.

Abstract: A hybrid photoelectrochemical and microbial fuel cell device is provided that includes a single-chamber photoelectrochemical device having an n-type TiO2 photoanode and a Pt counter electrode in an aqueous electrolyte solution, and a dual-chamber microbial fuel cell having an anode chamber and a cathode chamber separated by a cation exchange membrane, where the anode chamber includes a carbon anode and microorganisms and the cathode chamber includes Pt-loaded carbon cathode, the carbon anode is electrically connected to the Pt counter electrode, the carbon cathode is electrically connected to the TiO2 photoanode, a light source creates photoexcited electron-hole pairs at the photoanode, the holes oxidize water into oxygen, where dissolved oxygen in the cathode chamber is reduced, the microorganisms oxidize and produce bioelectrons, where the bioelectrons are transferred to the Pt electrode and reduce protons to form hydrogen gas.

Abstract: A method facilitates storing and discharging renewable energy. The method includes applying an electrical potential across a membrane comprising an oxygen ion conducting material during an energy storage cycle, transporting oxygen through the membrane to move oxygen from ambient air to a storage chamber during the energy storage cycle, subsequent to the energy storage cycle, applying an oxygen partial pressure differential across the membrane during an energy discharge cycle, transporting oxygen ions in an opposite direction through the membrane during the energy discharge cycle; and generating an electric current in at least one electrical circuit electrically connected to the membrane during the energy discharge cycle.

Abstract: A liquid catholyte as well as electrochemical cells and automotive vehicles employing the liquid catholyte are disclosed. The liquid catholyte includes a quinone as redox active material and a fluoroalkylsulfonyl salt as charge balancing agent and is characterized by a liquid form of the redox active material regardless of redox state. The liquid catholyte can thus have utility as a catholyte in a flow battery.

Abstract: An electrode assembly includes a unit cell A in which a first electrode 110, a second electrode 120, and a separator 130 disposed between the first and second electrodes 110 and 120 are stacked on each other or a structure in which the unit cells A are repeatedly stacked with the separator therebetween. A first electrode tab 111 protrudes from the first electrode 110, and a second electrode tab 121 protrudes from the second electrode 120, and the electrodes tabs 111 and 121 have widths that gradually decrease in directions in which the electrodes tabs 111 and 121 protrude outward from the electrodes 110 and 120, respectively.

Abstract: A rechargeable battery with improved safety and increased capacity of a cell including: an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes; a case comprising an opening configured to receive the electrode assembly; a cap assembly coupled to the sides of the opening of the case; and a lead tab connecting the first electrode to the cap assembly, wherein the first electrode includes a coating region where an active material is coated on both surfaces of a current collector, a first uncoated region where the active material is not coated on the current collector, and a second uncoated region where the active material is not coated on one surface of the current collector.

Abstract: A rechargeable battery includes a wound electrode assembly having first and second electrodes at opposite surfaces of a separator; a first case accommodating a first side of the electrode assembly and being coupled to the first electrode; a second case accommodating a second side of the electrode assembly and coupled to the second electrode; and a gasket engaged by the electrode assembly and combined at the first and second openings to seal the first and second openings.

Abstract: A non-aqueous electrolyte includes (i) an inhibitor against a reaction between an anode and a linear ester; (ii) a mixed organic solvent containing cyclic carbonate and the linear ester; and (iii) an electrolyte salt, wherein the inhibitor is any one compound or a mixture of at least two compounds selected from the group consisting of cyclic carbonate with a vinyl group, fluorinated ethylene carbonate, vinylene carbonate, cyclic acid anhydride, a compound having a cyclic S?O group and an acrylate-based compound. Also, an electrochemical device includes a cathode, an anode and the above non-aqueous electrolyte.

Abstract: Articles, compositions, and methods involving ionically conductive compounds are provided. The disclosed ionically conductive compounds may be incorporated into an electrochemical cell (e.g., a lithium-sulfur electrochemical cell, a lithium-ion electrochemical cell, an intercalated-cathode based electrochemical cell) as, for example, a protective layer for an electrode, a solid electrolyte layer, and/or any other appropriate component within the electrochemical cell. In certain embodiments, electrode structures and/or methods for making electrode structures including a layer comprising an ionically conductive compound described herein are provided.

Abstract: A gel electrolyte for a rechargeable lithium battery includes a gel polymer including a repeating unit derived from a first monomer represented by A-L-E, a non-aqueous organic solvent, a lithium salt, and an additive. A rechargeable lithium battery includes the gel electrolyte. The additive includes a compound selected from compounds represented by compounds represented by derivatives thereof, and combinations thereof.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material. A lithium insertion-extraction reaction potential of a negative electrode active material is higher than the oxidation-reduction potential of lithium by a value of 1 V or more. The nonaqueous electrolyte contains an electrolytic salt, a nonaqueous solvent, at least one hydroxyalkylsulfonic acid, and at least one sulfonate.

Abstract: Disclosed are certain fluorinated derivatives of Meldrum's acid as novel compounds, preparation methods for the same, their use in Li ion batteries, Li air batteries and Li sulphur batteries as well as solvent compositions, electrolyte compositions and respective batteries containing them.