Abstract: An accumulator includes a case accommodating an electrode assembly and electrolyte. The case includes a recess, a port, and a cap. The recess extends into a wall of the case. The port extends through the case wall in the recess. The cap is welded to the case wall around the recess to close the recess.

Abstract: A phosphorous containing compound represented by the following Chemical Formula 1, a method of preparing the phosphorous containing compound, an electrolyte for a rechargeable lithium battery including the phosphorous containing compound, and a rechargeable lithium battery including the electrolyte. (R1O)2P(NR2R3).

Abstract: Provided are a composition for a gel polymer electrolyte including i) an electrolyte solution solvent, ii) an ionizable lithium salt, iii) a polymerization initiator, and iv) a monomer having a functional group bondable to metal ions, and a lithium secondary battery including the composition for a gel polymer electrolyte.

Abstract: Electrolyte for an electrochemical battery cell, containing sulfur dioxide and a conductive salt. Improved characteristics of a cell filled with the electrolyte are achieved in that the molar concentration of hydroxide groups in the electrolyte is at most 50 mmol per liter and the molar concentration of chlorosulfonate groups in the electrolyte is at most 350 mmol per liter.

Abstract: There is provided a nonaqueous electrolyte that can suppress swelling of a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte for a nonaqueous electrolyte secondary battery 1 contains a lithium salt, vinylene carbonate, and a compound represented by general formula (1) below. In the general formula (1), X is an alkylene group with 2 to 4 carbon atoms that may have a substituent. Rf is a fluorine-containing linear or branched alkyl group with 1 to 6 carbon atoms. R is a linear, branched, or cyclic alkyl group with 1 to 6 carbon atoms that may have a substituent.

Abstract: The present invention provides one with a battery having an iron anode, e.g., a Ni—Fe battery, having improved performance characteristics. The battery uses a particular electrolyte and/or battery separator. The resulting characteristics of efficiency, charge retention and cycle life are much improved over such batteries in the prior art.

Abstract: The present invention provides one with a high cycle life Ni—Fe battery. The battery uses a particular electrolyte. The resulting characteristics of cycle life, as well as power and charge retention, are much improved over conventional Ni—Fe batteries.

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.

Abstract: The present invention provides one with a novel coated iron electrode. Provided is an iron based electrode comprising a single layer conductive substrate coated on at least one side with a multilayered coating, with each coating layer comprising an iron active material, and preferably a binder. The coating is comprised of at least two layers. Each layer has at least a different porosity or composition than an adjacent layer. The iron based electrode is useful in alkaline rechargeable batteries, particularly as a negative electrode in a Ni—Fe battery.

Abstract: Provided is a Ni—Fe battery comprising a high quality, high performance iron electrode. In one embodiment the iron electrode comprises a polyvinyl alcohol binder. The iron electrode of the Ni—Fe battery comprises a single conductive substrate coated on one or both sides with an iron active material.

Abstract: Provided is a high quality and high performance iron electrode, which is prepared by a continuous process. The process comprises preparing a formulation comprising an iron active material and a binder, and coating a continuous substrate material on at least one side with the formulation. The coated continuous substrate material is dried, compacted and blanked. A tab is then attached to the electrode. In one embodiment, the iron electrode comprises a PVA binder.

Abstract: A method for producing an electrode assembly, including a porous active material molded body, a solid electrolyte layer covering the surface of the active material molded body including the inside of each pore of the active material molded body, and a current collector in contact with the active material molded body exposed from the solid electrolyte layer, includes obtaining the active material molded body by heating a porous body formed using an active material at a temperature of 850° C. or higher and lower than the melting point of the active material, and forming the solid electrolyte layer by applying a liquid containing a constituent material of an inorganic solid electrolyte to the surface of the active material molded body including the inside of each pore of the active material molded body in a structure body including the active material molded body, and then performing a heat treatment.

Abstract: A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li+). The negative electrode has a porous structure. A pore diameter distribution of the negative electrode as determined by a mercury porosimetry, which includes a first peak having a mode diameter of 0.01 to 0.2 ?m, and a second peak having a mode diameter of 0.003 to 0.02 ?m. A volume of pores having a diameter of 0.01 to 0.2 ?m as determined by the mercury porosimetry is 0.05 to 0.5 mL per gram of the negative electrode excluding the weight of the current collector. A volume of pores having a diameter of 0.003 to 0.02 ?m as determined by the mercury porosimetry is 0.0001 to 0.02 mL per gram of the negative electrode excluding the weight of the current collector.

Abstract: The invention provides a nonaqueous electrolyte secondary battery having a cathode and an anode arranged so as to be opposite to each other, and an electrolyte layer put therebetween; wherein the cathode comprises: (a) a conductive polymer and (b) at least one selected from the group consisting of a polycarboxylic acid and a metal salt thereof, and wherein the anode comprises a material into which a base metal or ions thereof can be inserted and from which a base metal or ions thereof can be extracted. The invention further provides a cathode sheet for use in the nonaqueous electrolyte secondary battery mentioned above.

Abstract: The present disclosure relates to protected metal anode architecture and method of making the same, providing a protected metal anode architecture comprising a metal anode; and a composite protection film formed over and in direct contact with the metal anode, wherein the metal anode comprises a metal selected from the group consisting of an alkaline metal and an alkaline earth metal, and the composite protection film comprises particles of an inorganic compound dispersed throughout a matrix of an organic compound. The present disclosure also provides a method of forming a protected metal anode architecture.

Abstract: Provided is an iron based electrode comprising a single layer of a conductive substrate coated on at least one side with a coating comprising an iron active material and a binder. The iron based electrode is useful in a Ni—Fe battery as the anode. The electrode can also be prepared by continuously coating each side of the substrate with a coating mixture comprising the iron active material and binder.

Abstract: The present invention provides one with an iron electrode employing a binder comprised of polyvinyl alcohol (PVA) binder. In one embodiment, the invention comprises an iron based electrode comprising a single layer of a conductive substrate coated on at least one side with a coating comprising an iron active material and a binder, wherein the binder is PVA. This iron based electrode is useful in alkaline rechargeable batteries, particularly as a negative electrode in a Ni—Fe battery.

Abstract: A lithium secondary battery provided by this invention has electrodes and configured in a structure in which active material layers, including active materials and binders, are held by collectors. The active material of at least one of the positive electrode and the negative electrode of the electrodes is formed from a metal compound which stores and releases lithium ions through conversion reactions. The lithium secondary battery includes a polyimide-base resin as a binder.

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: Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.

Abstract: Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the particle surface of the lithium iron phosphate containing a predetermined amount of sulfur (S). Li1+aFe1?xMx(PO4?b)Xb??(1) (wherein M, X, a, x, and b are the same as defined in the specification).

Abstract: A cathode material for a lithium ion secondary battery is a composite grain including an oxide and a carbon material. The oxide includes, as constituent elements, Li, Si and at least one of Fe and Mn. According to a measurement by an X-ray diffraction method using Cu-K? as an X-ray source, a diffraction peak exists within a range of 2?=33±2° and a half width of the diffraction peak is 0.55° or more. A size of the grain is 1 ?m or more and 20 ?m or less.

Abstract: A storage element for a solid electrolyte battery is provided, having a main member including a porous ceramic matrix in which particles that are made of a first metal and/or a metal oxide and jointly form a redox couple are embedded. The storage element further includes particles made of another metal and/or an associated metal oxide, the other metal being electrochemically more noble than the first metal.

Abstract: A process of preparing nanostructured lithium titanate particles. The process contains the steps of providing a solvent containing a soft-template compound, a lithium ion-containing compound, and a titanium ion-containing compound; removing the solvent to obtain a lithium titanate precursor; and calcining the precursor followed by milling and annealing. Also disclosed is a nanostructured lithium titanate particle prepared by this process.

Abstract: An active anode (10) is provided that includes a framework (11) of a first anodic material which contains large cavities (12) that include particles (13) of a second anodic material. The cavities have to be large enough so that a fully lithiated particles of the second anodic material fits into the cavity that contains it and does not apply stress to the framework. The first anodic material has a lower lithiation/delithiation potential than the second anodic material. To produce the anode cavities the second anodic material is coated with an organic coating which is then removed once the anodic layer is produced from a mixture of the first and second anodic materials.

Abstract: An electrolyte for use in electrochemical cells is provided. One type of non-aqueous Magnesium electrolyte comprises: at least one organic solvent; at least one electrolytically active, soluble, inorganic Magnesium salt complex represented by the formula: MgnZX3+(2*n), in which Z is selected from a group consisting of aluminum, boron, phosphorus, titanium, iron, and antimony; X is a halogen and n=1-5. The properties of the electrolyte include high conductivity, high Coulombic efficiency, and an electrochemical window that can exceed 3.5 V vs. Mg/Mg+2 and total water content of <200 ppm. The use of this electrolyte promotes the electrochemical deposition and dissolution of Mg from the negative electrode without the use of any additive. Other Mg-containing electrolyte systems that are expected to be suitable for use in secondary batteries are also described. Rechargeable, high energy density Magnesium cells containing a cathode, an Mg metal anode, and an electrolyte are also disclosed.

Abstract: Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein the gel polymer electrolyte includes an acrylate-based polymer and a charge voltage of the battery is in a range of 4.3 V to 5.0 V, and a method of preparing the lithium secondary battery. A high-voltage lithium secondary battery of the present invention has excellent capacity characteristics at a high voltage of 4.3 V or more.

Abstract: Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein i) the anode includes a silicon (Si)-based anode active material, ii) the gel polymer electrolyte is formed by polymerizing a composition that includes a monomer having a functional group bondable to metal ions, and iii) a charge voltage of the battery is in a range of 3.0 V to 5.0 V. Since the lithium secondary battery of the present invention may prevent the movement of metal ions dissolved from a cathode to an anode or reduce the precipitation of metal on the anode, the lifetime of the battery may not only be improved but capacity characteristics of the battery may also be excellent even in the case in which the battery is charged at a high voltage as well as normal voltage.

Abstract: The invention relates to a novel lithium-sulphur type electrochemical battery A. According to the invention, the positive electrode (1) is made solely from a porous electronic conductor substrate forming a current collector and the electrolyte contains lithium polysulphides (Li2Sn) as sources of lithium and sulphur ions, said lithium polysulphides being formed ex-situ and not in the battery. The invention also relates to a method for the production of said device.

Abstract: A battery capable of improving ionic conduction is provided. The battery includes a cathode, an anode, and a solid electrolyte layer. One or more of the cathode, the anode, and the solid electrolyte layer includes a solid electrolyte binder.

Abstract: A rechargeable lithium battery including a negative electrode including a silicon-based negative active material; a positive electrode including a positive active material including a sacrificial positive active material selected from lithium nickel oxides, lithium molybdenum oxides, and combinations thereof; and a non-aqueous electrolyte, is disclosed.

Abstract: The present application is generally directed to energy storage materials such as activated carbon comprising enhanced particle packing properties and devices containing the same. The energy storage materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making the energy storage materials are also disclosed.

Abstract: The present invention relates generally to substrates for making polymers and methods for making polymers. The present invention also relates generally to polymers and devices comprising the same.

Abstract: The invention provides magnesium fuel cells which can prevent the self-discharge of negative electrode materials and can produce electricity stably for a long term. A magnesium fuel cell includes a negative electrode material including a magnesium alloy, and an electrolytic solution for eluting magnesium ions from the negative electrode material. The magnesium alloy contains aluminum and calcium. The electrolytic solution is preferably an aqueous sodium chloride solution, an aqueous sodium hydroxide solution, an aqueous sodium hydrogencarbonate solution, an aqueous sodium percarbonate solution, or a mixture including two or more of these solutions.

Abstract: An electrode includes a plant-derived porous carbon material having an ability to catalyze oxygen reduction.

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.

Abstract: An object of the invention is to provide an air battery that can avoid anode corrosion and withstand long-term use and storage, a mobile object including the air battery, and a method for using an air battery. Disclosed is an air battery including an air electrode, an anode, a liquid electrolyte layer and an outer case, the liquid electrolyte layer being present between the air electrode and the anode, and the outer case housing one or two or more laminates each comprising the air electrode, the anode and the liquid electrolyte layer, wherein the anode includes at least an anode active material layer and an anode current collector in order from the closest to the liquid electrolyte layer, and wherein the anode active material layer and the anode current collector are present on the upper side of the vertical direction and above the liquid electrolyte layer.

Abstract: [Problem] The object of the invention is to provide the filter device disposed in the moist fluid passage of the fuel cell system in that, water is not adhered and never remains in the filter and when leaving it under the low temperature after the system stops, blockage by freezing the filter can surely be prevented, and the complex control and the heat source such as heaters for the decompression as conventional is unnecessary, and the filter device is cheap and compact.

Abstract: A flow battery system and method are provided. The flow battery system includes a first battery stack including a first half-cell, a first pressure feed system, including at least a first storage tank and a first booster tank to store a liquid electrolyte, designed to generate a first booster pressure in the first booster tank sufficient to force the liquid electrolyte to be fed from the first pressure feed system through the first half-cell, and a return system to return the liquid electrolyte from the first half-cell to the first pressure feed system. The return system may include a gravity feed system returning liquid electrolyte from the first half-cell to a collection tank, and a pump to return the collected liquid electrolyte from the collection tank to the first storage tank. The pressure feed flow battery system may have a two-tank, divided 2-tank, or four-tank flow battery configurations.

Abstract: A fuel cell module includes a fuel cell stack, a partial oxidation reformer, and a heat exchanger. The heat exchanger is provided on one side of the fuel cell stack, and the partial oxidation reformer and the exhaust gas combustor are provided on the other side of the fuel cell stack. The partial oxidation reformer is provided around the exhaust gas combustor. The fuel cell module includes a first thermoelectric converter and a second thermoelectric converter for performing thermoelectric conversion based on a temperature difference between the combustion gas and the oxygen-containing gas.

Abstract: An apparatus and method to detect a short circuit event in a fuel cell system of a vehicle. The detection relies on three existing sensors within the fuel cell system, two current sensors and a voltage sensor. A controller executes an algorithm with a set of thresholds stored in a computer readable medium to monitor the sensors to sense if any of the threshold values are crossed. If crossed, the controller may take remedial action to stop the short circuit and/or prevent damage to the fuel cell system. A mode manager may work with the controller to determine when the operating conditions of the fuel cell system are ideal for sensing for a low voltage condition indicative of a short circuit event. A pair of integrators may be electrically coupled to an alternating current sensor to differentiate a short circuit event from a high frequency resistance current.

Abstract: A fuel cell (FC) system operating as its own hydrogen leak detector. The system including at least one cathode and cathode conduit for passage of oxidant to to the cathode and a housing containing one or more FCs and defining a plenum around the FC. A ventilation system forces air from the plenum into the cathode conduit and a control system monitors the FC voltage and detects a drop in voltage attributable to hydrogen in the cathode conduit. A control system may include actual cell voltage monitoring of the FC or of one or more cells in the FC stack and a processor for receiving inputs indicative of the operation of the FC or FC stack and/or to determine an expected voltage of FC(s) being monitored and whether the difference between the actual and expected voltage(s) exceeds a predetermined threshold indicative of a predetermined level of hydrogen in the cathode conduit.

Abstract: A fuel cell system includes: a coolant circulation passage through which a coolant for cooling a fuel cell circulates; a pump that circulates the coolant; a radiation unit that cools the coolant by discharging heat from the coolant; a bypass passage connected to the coolant circulation passage so as to bypass the radiation unit; and an open/close valve that is provided in a convergence portion where low temperature coolant that has passed through the radiation unit and high temperature coolant that has passed through the bypass passage without passing through the radiation unit converge, and that opens when a temperature of the high temperature coolant reaches or exceeds a predetermined opening temperature, whereby the low temperature coolant and the high temperature coolant converge and are supplied thus to the fuel cell, wherein a basic discharge flow of the pump is calculated in accordance with a condition of the fuel cell, and when the temperature of the low temperature coolant is lower than a predetermin

Abstract: A fuel cell system, including a plurality of bipolar plate assemblies, each assembly including a first plate and a second plate with an internal coolant flow path disposed therebetween, a flow path for a first reactant gas on a side of the first plate opposite the internal coolant flow path, and a flow path for a second reactant gas on a side of the second plate opposite the internal coolant flow path, and a cooling system configured to place coolant in thermal communication with the plurality of bipolar plate assemblies, wherein cycling pressure differentials between the internal coolant flow path and the external reactant gas flow paths cause expansion and contraction of a volume of coolant disposed within the bipolar plate assembly, thereby pumping coolant through the cooling system. A method of cooling a fuel cell-powered vehicle is also provided.

Abstract: A TPRD for a high pressure storage vessel including an integrated pressure sensor cooperative with an activation mechanism and a method of monitoring a TPRD for use in a fuel cell system. The TPRD comprises a release piston, moveable between an open and a closed position, which controls the flow of gas from a fuel storage vessel through a gas outlet port. The thermally activated activation mechanism comprises a gas-inlet chamber and a liquid-filled bulb having an air bubble. Upon activation, the release piston moves from the closed position to the open position. The integrated pressure sensor detects the pressure within the TPRD. A difference in pressure between that of the fluid within the fuel storage vessel and the pressure within the TPRD provides indicia of impaired movement of the release piston.

Abstract: A fuel cell system including a fuel cell that receives a supply of an anode gas and a cathode gas and generates power is provided. The fuel cell system includes a water content calculation unit configured to calculate a water content of the fuel cell, an internal impedance calculation unit configured to calculate an internal impedance of the fuel cell, and a starting temperature calculation unit configured to calculate a fuel cell temperature at a start of the system, based on the water content of the fuel cell as of a last time the system was stopped, and the internal impedance of the fuel cell at the start of the system.

Abstract: A fuel cell stack includes a plurality of fuel cells arranged in a stack configuration extending along a z-axis, wherein each fuel cell includes a membrane electrode assembly interposed between a pair of bipolar plates, and each membrane electrode assembly has a total active area measured in an x-y plane that is generally perpendicular to the z-axis. Each bipolar plate includes a plurality of common passages extending generally parallel to the z-axis. The total active area of each membrane electrode assembly includes a plurality of base active areas arranged co-planar in the x-y plane along an x-axis.

Abstract: A component for constituting a fuel cell having a gasket molded integrally with an MEA in which molding of the gasket is required once, the MEA requires no through hole and requires a small fastening force when the MEA is compressed. The component comprises the MEA arranged between a pair of separators and compressed when a cell is assembled; a rubber impregnated portion formed by impregnating the outer peripheral portion of the MEA with a gasket molding material, i.e. a part of rubber; a flat gasket portion composed of the rubber molded integrally on the outer circumferential side of the rubber impregnated portion; a lip formed on the flat gasket portion; and a recess as a clearance when the lip is compressed. The portion impregnated with rubber and the flat gasket portion has a thickness (d3) set equal to the thickness (d2) of the MEA when the cell is assembled.

Abstract: The invention relates to fuel cell assemblies, and in particular to improvements relating to sealing of such assemblies, embodiments of which include a fuel cell assembly (200) comprising a membrane electrode assembly (104), a cathode separator plate (208) having a series of corrugations extending, and providing air flow paths, between first and second opposing edges of the plate, a gasket (105) providing a fluid seal around a peripheral edge of the membrane electrode assembly (104) between the separator plate (208) and the membrane electrode assembly (104) and a metal shim (107) disposed between the gasket (105) and the separator plate (208) over the peripheral edge of the membrane electrode assembly (104).

Abstract: Catalyst particles includes a catalyst material and carbon particles supporting the catalyst material. The catalyst particles has a water content of 4.8 mass % or more and 20 mass % or less. A manufacturing method of catalyst particles includes exposing catalyst particles, which are carbon particles supporting a catalyst material, to a humidified atmosphere, prior to dispersing the carbon particles and a polymer electrolyte in a solvent for a catalyst ink.