Abstract: The present invention is related to a pouch type lithium secondary battery. The pouch type lithium secondary battery according to the present invention may comprise an electrode assembly including a positive electrode, a separator and a negative electrode, and a pouch having a groove for receiving the electrode assembly and upper and lower portions of which are fused to each other around the groove to form flange-shaped edges. In particular, the edges may be at least partially covered at ends thereof with insulating material. As a result, a short circuit between a metal foil of the pouch and the negative electrode of the battery can be prevented, and corrosion of the battery may be also prevented.

Abstract: The invention provides a battery, which can improve battery characteristics such as high temperature storage characteristics. The battery comprises a battery device, wherein a cathode and an anode are wound with a separator in between. The anode contains an anode material capable of inserting and extracting Li as an anode active material. An electrolytic solution is impregnated in the separator. The electrolytic solution contains a solvent, and an electrolyte salt such as Li[B(CF3)4] dissolved in the solvent, which is expressed by a chemical formula of Li[B(RF1)(RF2)(RF3)RF4]. RF1, RF2, RF3, and RF4 represent a perfluoro alkyl group whose number of fluorine or carbon is from 1 to 12, respectively. Consequently, high temperature storage characteristics are improved.

Abstract: The SOFC of the present invention has a plurality of individual solid oxide fuel cells (84) disposed within an generating chamber (10), a fuel supply unit (38) for supplying fuel to the individual solid oxide fuel cells, a temperature sensor (142) for measuring the temperature of the generating chamber (T1), and a control section (110) for changing the amount of fuel supplied in response to an amount of generation required based on control characteristics for supplying fuel, wherein the control section is furnished with a temperature band for monitoring purposes, having a minimum temperature value (Ta) and a maximum temperature value (Tb) for adaptive control, predetermined based on a minimum amount and maximum amount of rated electrical generation, and a maximum temperature value for adaptive control in response to anomalies, which is higher than the maximum temperature value (Tb) of the adaptive control temperature band, and a minimum temperature value for adaptive control in response to anomalies, which is

Abstract: Disclosed herein is a battery pack having a plurality of battery cells or unit modules (‘unit cells’), which can be charged and discharged, mounted in a pack case.

Abstract: Motor vehicle battery lead with a first connection element for a battery pole, a second connection element for at least one consumer, and a flat conductor arranged between the first connection element and the second connection element. A modular construction with a high degree of flexibility is achieved, in that the flat conductor is formed in a number of parts, wherein at least two parts of the multi-part flat conductor are connected to each other over the course of the flat conductor.

Abstract: The invention relates to improved polymer membranes, to processes for production thereof and to the use thereof.

Abstract: The present invention relates to a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery comprising the same. The positive active material includes a lithium/nickel-based compound wherein primary particles having an average particle diameter ranging from 1 ?m to 4 ?m are agglomerated to form secondary particles. The positive active material of the present invention has excellent electrochemical performance and outstanding inhibition to swelling at high temperatures.

Abstract: A reliable, end-to-end power supply solution for components of a telecommunications network provides either a primary source or a backup source of electrical power at various telecommunications sites for reliable operation of telecommunications equipment. One subsystem of the power supply solution includes one or more proton exchange membrane type fuel cells and an energy storage device for storing DC electrical power produced by the fuel cells. Another subsystem includes one or more microturbine generators, one or more rectifiers for converting AC electrical power produced by the microturbine generators to DC electrical power, and one or more proton exchange membrane type fuel cells for producing DC electrical power. The power supply solution ensures that voice and data traffic is reliably handled by a telecommunications network in situations where commercial electric utilities fail to supply power at certain points along the network.

Abstract: A positive active material for a rechargeable lithium battery includes a core including a lithiated intercalation compound, and a MgO that is present as an island shape on the core surface and having an average nano-size; a method of manufacturing this positive active material, and a rechargeable lithium battery including this positive active material are provided.

Abstract: There are provided a hydrogen production apparatus, a fuel cell system and operation method thereof, which can more reliably suppress degradation due to oxidation of a catalyst in a hydrogen production apparatus even when start-ups and shutdowns are repeated without a purge operation during the shutdowns. The hydrogen production apparatus includes a reforming part, a shift reaction part, and a selective oxidation reaction part having a selective oxidation catalyst bed packed with a selective oxidation catalyst, wherein the hydrogen production apparatus has an oxygen absorbent bed packed with an oxygen absorbent capable of absorbing oxygen and capable of being regenerated by a reducing gas, and the oxygen absorbent bed and the selective oxidation catalyst bed are stacked with the oxygen absorbent bed on the downstream side, and the hydrogen production apparatus has means for opening the downstream of the oxygen absorbent bed to the atmosphere. The fuel cell system has this hydrogen production apparatus.

Abstract: Disclosed herein is a secondary battery having a jelly roll type electrode assembly (‘jelly roll’) of a cathode/separator/anode structure mounted in a battery container, wherein a seal tape is attached to an outer side of the jelly roll including a wound end of the jelly roll, and the seal tape reacts with an electrolyte with the result that the seal tape is gelled.

Abstract: A rechargeable battery includes an electrode assembly, the electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, a first collector plate, a case in which the electrode assembly is received, a cap plate sealing the case, a first electrode terminal electrically connected to the first electrode plate, the first electrode terminal including a first terminal bolt electrically connected to the first collector plate and passing through the cap plate, and a first terminal nut, the first terminal nut being engaged with the first terminal bolt so as to be riveted thereto.

Abstract: Provided are a cathode material capable of achieving a higher discharge capacity and a higher discharge voltage, and obtaining superior charge-discharge characteristics, and a battery using the cathode material. A separator (15) is disposed between a cathode (12) and an anode (14). The cathode (12) comprises a lithium composite oxide represented by LiaMIbMIIcOd. MI represents at least two kinds selected from the group consisting of Mn, Ni and Co, and MII represents at least one kind selected from the group consisting of Al, Ti, Mg and B. Further, a, b, c and d are within a range satisfying 1.0<a<1.5, 0.9<b+c<1.1, a>b+c, 1.8<d<2.5, respectively. When lithium is excessively included, the charge capacity can be improved, and even after charge, a certain amount of lithium remains in the crystalline structure of the lithium composite oxide, so the stability of the crystalline structure can be improved.

Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; a porous polymer layer formed on the electrode active material layer; and a first porous supporting layer formed on the porous polymer layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one of surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.

Abstract: An electrode/electrolyte assembly that has a well-integrated interface between an electrode and a solid polymer electrolyte film, which provides continuous, ionically-conducting and electronically insulating paths between the films is provided. A slurry is made containing active electrolyte material, a liquefied, ionically-conductive first polymer electrolyte with dissolved lithium salt, and conductive additive. The binder may have been liquefied by dissolving in a volatile solvent or by melting. The slurry is cast or extruded as a thin film and dried or cooled to form an electrode layer that has some inherent porosity. A liquefied second polymer electrolyte that includes a salt is cast over the electrode film. Some of the liquefied second polymer electrolyte fills at least some of the pores in the electrode film and the rest forms an electrolyte layer on top of the electrode film.

Abstract: A fuel cell plate assembly includes a first plate having a feed region and an active region. A plurality of flow channels is formed in the first plate and connects the feed region and the active region. The first plate further includes a first step oriented transverse to the flow channels in the feed region and a second step oriented transverse to the flow channels in the active region. The second step is formed only in the flow channels of the first plate.

Abstract: An electrochemical cell stack assembly is disclosed comprising a member made of an elastic and electrically conductive material placed between a bus bar and a starter plate. The elastic, electrically conducting member covers at least a peripheral region along a perimeter of a recess housing the bus bar to distribute compression forces over an interface area between the bus bar and an insulator end plate, thereby reducing shear stresses in the starter plate when the stack is compressed. An elastic pad also may be arranged in the recess and between the insulator end plate and the bus bar.

Abstract: A fuel cell system is provided that includes a fuel cell stack and an air compressor in communication with a cathode inlet, a hydrogen source in communication with an anode inlet, and a start-up battery adapted to power the air compressor. The start-up battery is at least one of a low-voltage battery and a high-voltage battery. A power conversion module is in electrical communication with the start-up battery and the air compressor. The power conversion module is adapted to boost a voltage of the start-up battery as desired and power the air compressor at start-up. A controller is in communication with the power conversion module and is adapted to set an air compressor speed based on an available electrical energy. An open-loop method of operating the fuel cell system at start-up is also provided, wherein an anode purge is scheduled based on the available electrical energy from the battery.

Abstract: An electrochemical device includes a thermally-triggered intumescent material or a gas-triggered intumescent material. Such devices prevent or minimize short circuits in a device that could lead to thermal run-away. Such devices may include batteries or supercapacitors.

Abstract: A gas diffusion layer for fuel cell of the present invention is structured with a porous member mainly comprised of conductive particles such as acetylene black, graphite and a polymer resin such as PTFE. This makes it possible to achieve both an improvement in power generation performance of the fuel cell and a reduction in costs.