Abstract: A flooded lead-acid battery, including a negative electrode plate holding a negative active material, a positive electrode plate holding a positive active material, and a flowable electrolyte solution in which these plates are immersed, and allowing the electrolyte solution to have a utilization factor greater than or equal to 75%, wherein the concentration of an alkali metal ion or an alkaline earth metal ion in the electrolyte solution is allowed to be 0.07 to 0.3 mol/L, and the pore volume of the negative active material after formation is allowed to be 0.08 to 0.16 mL/g.

Abstract: The lithium secondary battery positive electrode provided by the present invention has a positive electrode collector and a positive active material layer formed on the collector. The positive active material layer is composed of a matrix phase containing at least one particulate positive active material and at least one binder, and an aggregate phase dispersed in the matrix phase, constituted by aggregation of at least one particulate positive active material and containing substantially no binder.

Abstract: An exterior body of a secondary battery includes an insertion portion for insertion of a third electrode including metal lithium. An injection and expelling portion through which an electrolyte solution can be replaced is further provided. Specifically, a nonaqueous secondary battery includes a positive electrode, a negative electrode, an electrolyte solution, a separator, and an exterior body covering the positive electrode, the negative electrode, and the electrolyte solution. The exterior body includes a positive electrode terminal to which the positive electrode is electrically connected, a negative electrode terminal to which the negative electrode is electrically connected, and an insertion portion for insertion of a third electrode including metal lithium.

Abstract: A battery pack includes a first battery and a second battery each having a bent part at one side; and an adhesion member interposed between the bent part of the first battery and the bent part of the second battery and adhering the bent part of the first battery to the bent part of the second battery.

Abstract: A traction battery assembly for a vehicle includes an array of cells stacked on a tray. The array of cells defines opposing longitudinal sides and opposing lateral sides. First and second L-shaped components are attached to the tray. Each of the components includes an end wall and a sidewall that are integrally formed to define a substantially 90° corner. The first and second components are attached together such that each of the sidewalls is disposed adjacent one of the longitudinal sides and each of the end walls is disposed adjacent one of the lateral sides to form a housing around the tray that has an open top and an open bottom.

Abstract: A separator with a heat resistant insulation layer includes a porous substrate, and a heat resistant insulation layer formed on one surface or both surfaces of the porous substrate and containing at least one kind of inorganic particles and at least one kind of a binder, wherein a content mass ratio of the inorganic particles to the binder in the heat resistant insulation layer is in a range from 99:1 to 85:15, a BET specific surface area of the inorganic particles is in a range from 3 m2/g to 50 m2/g, and a ratio of the moisture content per mass of the binder to the BET specific surface area of the inorganic particles is greater than 0.0001 and smaller than 2.

Abstract: A battery comprises: a battery cell; and tabs configured as one pair of an anode tab and a cathode tab and included in the battery cell. At least one of the anode tab and the cathode tab is configured in such a way that a welding region exposed outside the battery cell and a reaction region positioned in the battery cell are formed of different metals and are joined to each other.

Abstract: A battery module including a plurality of unit cells, a plurality of bus bars electrically connecting the plurality of unit cells, a positive electrode terminal and a negative electrode terminal that are electrically connected and in contact with two ends of the plurality of unit cells, a battery housing accommodating the plurality of unit cells and the bus bars, and detection terminals that are respectively electrically connected to the plurality of bus bars, wherein the detection terminals are exposed outside the battery housing. Accordingly, voltage balancing between the unit cells may be controlled without disassembling the battery module.

Abstract: A stainless steel having a low surface contact resistance for fuel cell separators is provided. The stainless steel has a Cr content of 16 to 40 mass % or more. The stainless steel includes a region having a fine textured structure on its surface, and the area percentage of the region is 50% or more, preferably 80% or more. The region having a fine textured structure is a region which has a structure having depressed portions and raised portions at an average interval between depressed portions or raised portions of 20 nm or more and 150 nm or less when observed with a scanning electron microscope.

Abstract: A hydrogen extraction system is provided. The extraction system can comprise a compressor for compressing a gas mixture comprising hydrogen and a desulfurization unit for receiving the compressed gas mixture. The system can also comprise a hydrogen-extraction device for receiving a reduced-sulfur gas mixture and a hydrogen storage device for receiving an extracted hydrogen gas. A method of extracting hydrogen from a gas mixture comprising natural gas and hydrogen, and a method of determining an energy price are also provided.

Abstract: A heater includes a heater housing extending along a heater axis. A fuel cell stack assembly is disposed within the heater housing and includes a plurality of fuel cells which convert chemical energy from a fuel into heat and electricity through a chemical reaction with an oxidizing agent. A combustor disposed within the heater housing receives an anode exhaust and a cathode exhaust from the fuel cell stack assembly and combusts a mixture of the anode exhaust and the cathode exhaust to produce a heated combustor exhaust. The combustor includes a combustor exhaust outlet for discharging the heated combustor exhaust into the heater housing. The heater housing is heated by the fuel cell stack assembly and the heated combustor exhaust.

Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.

Abstract: A nanostructured anode of solid oxide fuel cell with high stability and high efficiency and a method for manufacturing the same are revealed. This anode comprising a porous permeable metal substrate, a diffusion barrier layer and a nano-composite film is formed by atmospheric plasma spray. The nano-composite film includes a plurality of metal nanoparticles, a plurality of metal oxide nanoparticles, and a plurality of gas pores that are connected to form nano gas channels. The metal nanoparticles are connected to form a 3-dimensional network that conducts electrons, while the metal oxide nanoparticles are connected to form a 3-dimensional network that conducts oxygen ions. The network formed by metal oxide nanoparticles has certain strength to separate metal nanoparticles and prevent aggregation or agglomeration of the metal nanoparticles. Thus this anode can be applied to a solid oxide fuel cell operating in the intermediate temperatures (600˜800° C.) with high stability and high efficiency.

Abstract: Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.

Abstract: Embodiments are disclosed herein that relate to recycling and refurbishing battery electrode materials. For example, one disclosed embodiment provides a method comprising obtaining a quantity of spent electrode material, reacting the spent electrode material with an aqueous lithium solution in an autoclave while heating the spent electrode material and the aqueous lithium solution to form a hydrothermally reacted spent electrode material, removing the hydrothermally reacted spent electrode material from the aqueous lithium solution, and sintering the hydrothermally reacted spent material to form a recycled electrode material.

Abstract: The invention provides a method capable of more simply and easily mass-producing sealed lithium secondary batteries having a stable battery performance. This method of manufacturing a sealed lithium secondary battery having an electrode assembly, an electrolyte solution and a sealable metallic or nonmetallic hard case of a given shape includes the steps of housing the electrode assembly, which includes a positive electrode and a negative electrode, and the electrolyte solution within the hard case; negatively pressurizing the interior of the hard case and sealing the hard case in the negatively pressurized state; carrying out, after the sealing step, initial charging so as to adjust the battery to a voltage at which the electrode assembly generates gases; and carrying out, after the initial charging step, main charging so as to charge the battery to a predetermined voltage.

Abstract: The invention relates to an electrolyte for a lithium-based energy storage device comprising at least one lithium salt, a solvent and at least one compound of general formula (1), and to their use in lithium-based energy storage devices.

Abstract: Disclosed is a method for preparing an electrode active material for a rechargeable lithium battery, including: performing first mixing to mix a carbon-based active material with a low crystalline carbon material; performing second mixing to mix the mixture of the carbon-based active material and the low crystalline carbon material with a ceramic; and performing a heat treatment, an electrode for a rechargeable lithium battery including the electrode active material for the rechargeable lithium battery prepared by the method, and a rechargeable lithium battery.

Abstract: A secondary battery supplying electrical power to a load comprises a battery unit, at least one PTC temperature sensing device and a load switch. The battery unit is encompassed by a battery shell. The PTC temperature sensing device is disposed on a primary surface of the battery shell to effectively sense a temperature of the battery unit. The load switch connects to the battery unit and a load and determines whether the battery unit and the load switch are in electrical connection or in an open circuit state upon resistance variation of the PTC temperature sensing device. When the resistance of the PTC temperature sensing device increases by a threshold times within a specific temperature variation or time period, the load switch receives a control signal and accordingly switches to an open circuit state.

Abstract: An electrochemical converter with proton membrane includes a plurality of electrochemical unitary cells connected in series and arranged on a carrier tape elongated along a longitudinal axis, a first face of which has anodes that receive hydrogen and a second face has cathodes that receive air, wherein the hydrogen circulates in a flow parallel to the longitudinal axis of the aforementioned tape and the air circulates in a flow transverse to the longitudinal axis of the aforementioned tape, and separation means dividing the air flow into a cooling flow having no contact with the cathodes and a cathodic reaction flow in contact with the cathodes.