Abstract: A battery module includes a plurality of electrochemical cells and a structure including an upper portion configured to support a bottom portion of each of the plurality of electrochemical cells and a lower portion coupled to the upper portion. The lower portion includes a thermal management feature having at least one passage provided therein. The passage is configured for a thermal management fluid to pass therethrough to provide thermal management to the electrochemical cells of the battery module.

Abstract: A positive electrode lead of the present invention comprises: a strip-shaped first lead half body electrically connected to a sealing body of a nickel-hydrogen secondary battery; a strip-shaped second lead half body electrically connected to a positive electrode of an electrode group of the nickel-hydrogen secondary battery; a PTC thermistor joined between the first lead half body and the second lead half body; and a protective member covering a portion of the positive electrode lead where the PTC thermistor is joined. The second lead half body includes a portion to be bent on the outer side of the portion covered with the protective member. A recessed groove is formed in the portion covered with the protective member and has a shape elongated in a direction intersecting with a bend line of the portion to be bent.

Abstract: Composite materials containing sulfurized polymers and sulfur-containing particles can be used in lithium-sulfur energy storage devices as a positive electrode. The composite material exhibits relatively high capacity retention and high charge/discharge cycle stability. In one particular instance, the composite comprises a sulfurized polymer having chains that are cross-linked through sulfur bonds. The polymer provides a matrix in which sulfide and/or polysulfide intermediates formed during electrochemical charge-discharge processes of sulfur can be confined through chemical bonds and not mere physical confinement or sorption.

Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.

Abstract: An electrical energy storage device 20 is disclosed as a secondary battery device 22 having an anode 28 containing Aluminum and Indium and a cathode 38 that includes an electroactive layer 42 with a host lattice 44 having a conjugated system with delocalized ? electrons. A dopant 48 containing Aluminum is bonded with and intercalated in the host lattice 44. A membrane 34 of cellulose is wetted with a non-aqueous electrolyte 24 containing glycerol and first ions 26 containing Aluminum and having a positive charge and second ions 27 containing Aluminum and having a negative charge, and is sandwiched between the anode 28 and the cathode 38. A method for constructing a secondary battery device 22 is disclosed as well, including steps for producing the electrolyte 24, the anode 28, and the cathode 38 including the dopant 48.

Abstract: A method of manufacturing a curved secondary battery, the method including preparing a flat secondary battery such that the flat secondary battery includes an electrode assembly and a pouch accommodating the electrode assembly; primary shaping the secondary battery such that the primary shaping includes disposing the flat secondary battery in a first jig, and pressing the flat secondary battery to form a primarily-shaped secondary battery such that the primarily-shaped secondary battery has a first curvature radius; secondary shaping the secondary battery such that the secondary shaping includes disposing the primarily-shaped secondary battery in a second jig, and pressing the primarily-shaped secondary battery to form a secondarily-shaped secondary battery having a second curvature radius; and maintaining the secondarily-shaped secondary battery after forming thereof in the second jig for a predetermined time period.

Abstract: A method for making a fibrous layer for fuel cell applications includes a step of combining a perfluorocyclobutyl-containing resin with a water soluble carrier resin to form a resinous mixture. The resinous mixture is then shaped to form a shaped resinous mixture. The shaped resinous mixture includes perfluorocyclobutyl-containing structures within the carrier resin. The shaped resinous mixture is contacted (i.e., washed) with water to separate the perfluorocyclobutyl-containing structures from the carrier resin. Optional protogenic groups and then a catalyst are added to the perfluorocyclobutyl-containing structures.

Abstract: A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream having a temperature above 200 C, lowering a temperature of the fuel exhaust stream to 200 C or less, separating the fuel exhaust stream into a first separated fuel exhaust stream and a second separated fuel exhaust stream, and recycling the first separated fuel exhaust stream into the fuel inlet stream.

Abstract: A lithium air battery including an anode for intercalating/deintercalating lithium ions; a cathode having oxygen as a cathode active material, a lithium ion conductive solid electrolyte membrane disposed between the anode and the cathode; and an electrolyte, wherein the electrolyte is disposed between the lithium ion conductive solid electrolyte membrane and the cathode, and wherein the electrolyte includes at least one compound selected from a compound represented by Formula 1 and a copolymer including a repeating unit represented by Formula 2 as an additive: wherein in Formulae 1 and 2, groups CY1, CY2, a, b, c, b, R1 to R18, and variables t, u, and v are defined in the specification.

Abstract: A pulse mode apparatus comprises a mismatched battery electrically connected to a pulse mode device having a pulse duty cycle with a power-on time period and a power-off time period. The mismatched battery comprises a first battery cell having a first internal resistance and first charge capacity, and a second battery cell having a second internal resistance and second charge capacity, and the battery comprises at least one of the following: (1) the second internal resistance is less than the first internal resistance, and (2) the second charge capacity is less than the first charge capacity. The battery also has a pair of electrical connectors electrically coupling the first and second battery cells in parallel, a pair of terminals connected to the first or second battery cells, and a casing around the first and second battery cells with the terminals extending out of the casing.

Abstract: A fuel cell stack is comprised of a plurality of power generating units which are stacked along the horizontal direction. An oxidant gas inlet port and a fuel gas inlet port are provided in an upper portion of one of the power generating units, and an oxidant gas outlet port and a fuel gas outlet port are provided in the lower portion of the power generating unit. A refrigerant inlet port and a refrigerant outlet port are formed in each of the left and right portions of the power generating unit.

Abstract: An electrochemical cell comprising an electrode assembly having a plurality of cathodes in which the plurality of cathodes is electrically connected together at a connection tab junction is disclosed. The junction preferably comprises a plurality of cathode connection tabs that are folded over each other to construct a junction that is mechanically and electrically robust. The junction is comprised of a plurality of connection tabs that each extend from a cathode. Each of the respective tabs is folded over each other to form a compact electrode junction having redundant connections. An elongated lead extends from the junction to provide an electrical connection to the plurality of cathodes. The junction is welded together such as by a laser, resistance or ultrasonic weld joint. The cathode junction is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices.

Abstract: A system and method for stabilizing electrodes against dissolution and/or hydrolysis including use of cosolvents in liquid electrolyte batteries for three purposes: the extension of the calendar and cycle life time of electrodes that are partially soluble in liquid electrolytes, the purpose of limiting the rate of electrolysis of water into hydrogen and oxygen as a side reaction during battery operation, and for the purpose of cost reduction.

Abstract: A battery pack includes a plurality of battery modules, each having at least one unit cell, a case for accommodating the unit cell and a bus bar electrically connected to the unit cell, and a connecting bar for connecting battery modules adjacent to each other among the plurality of battery modules, wherein at least one of the connecting bars includes a first metal plate, a second metal plate spaced apart from the first metal plate, and a metal bridge configured to connect the first metal plate and the second metal plate and having a lower melting point than the metal plate. In this configuration, if an overcurrent flows at the battery pack, the connecting bar is easily broken, thereby ensuring safety of the battery pack in use.

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. In a case where the composition for a gel polymer electrolyte of the present invention is used in a lithium secondary battery, since the movement of metal ions dissolved from a cathode to an anode may be prevented or the precipitation of metal on the anode may be reduced, 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: A current interruption device includes a deforming plate, a contact plate and a conducting plate which configure a current path. The deforming plate includes one surface on an opposite side from the contact plate facing a first space, a pressure of which is retained to a same pressure as the internal pressure of the casing and the other surface opposed to the contact plate facing a second space, a pressure of which is retained to a same pressure as an external pressure of the casing. When the internal pressure rises above the predetermined level, the second contact portion is separated from the conducting plate by deformation of the deforming plate toward the contacting plate.

Abstract: A method for controlling a fuel cell system, capable of quickly detecting the pressure rise caused by a faulted open anode injector, reducing pressure in the fuel cell stack when the fault occurs, and taking remedial action to allow continued operation of the fuel cell stack, and militate against a walk-home incident.

Abstract: The invention relates to separator plates (108) for fuel cells, and in particular to separator plates having particular geometries for improved edge sealing properties. Exemplary embodiments of the invention include a fuel cell separator plate (308) having first and second opposing faces (304, 305), the separator plate having a series of corrugations (301) extending, and providing air flow paths (302), between first and second opposing edges of the plate, wherein crests of corrugations along the first face (304) proximate the first edge (303) of the plate are depressed to be coplanar with adjacent crests of corrugations along the second face such that a greater contact surface on the second face (305) is provided compared with the first face (304).

Abstract: A method of determining a distribution of electrolytes in a flow battery includes providing a flow battery with a fixed amount of fluid electrolyte having a common electrochemically active specie, a portion of the fluid electrolyte serving as an anolyte and a remainder of the fluid electrolyte serving as a catholyte. An average oxidation state of the common electrochemically active specie is determined in the anolyte and the catholyte and, responsive to the determined average oxidation state, a molar ratio of the common electrochemically active specie between the anolyte and the catholyte is adjusted to increase an energy discharge capacity of the flow battery for the determined average oxidation state.

Abstract: Embodiments of the disclosure relate to membrane electrode assemblies. The membrane electrode assembly may include at least one gas-diffusion layer having a first side and a second side, and particle cores adhered to at least one of the first and second sides of the at least one gas-diffusion layer. The particle cores includes surfaces adhered to the at least one of the first and second sides of the at least one gas-diffusion layer and surfaces not in contact with the at least one gas-diffusion layer. Furthermore, a thin layer of catalytically atoms may be adhered to the surfaces of the particle cores not in contact with the at least one gas-diffusion layer.