Abstract: Disclosed herein is a secondary battery pack including a cylindrical battery cell having an electrode assembly of a cathode/separator/anode structure mounted in a battery case together with an electrolyte in a sealed state, an insulative mounting member having an opening, through which a cathode terminal of the battery cell is exposed upward, the insulative mounting member being configured to have a structure in which a protection circuit module (PCM) assembly is disposed at the top of the insulative mounting member, the insulative mounting member being mounted to the top of the battery cell, a PCM assembly including a PCM having an external input and output terminal formed at the top thereof and connecting members coupled to the bottom of the PCM, the connecting members being connected to a protection circuit of the PCM, and an insulative cap coupled to the top of the battery cell so that the insulative cap surrounds the PCM assembly in a state in which the external input and output terminal is exposed, wher

Abstract: A magnetic sensor for measuring the magnetic properties of a battery cell, and converting the magnetic properties to a battery cell SOC. The magnetic sensor includes a magnetic core formed of laminated high permeability plates provided in a C-shape. An extended portion of the battery cell extends through a transverse opening in the core so that it is positioned within the core. A driving coil is wrapped around one end of the magnetic core and generates a magnetic field in the core that extends across the transverse opening and through the battery cell. A receiving coil is wrapped around an opposite end of the core that receives the magnetic field, and converts the magnetic field to a representative current. A detection circuit converts the receiving coil current to the battery cell SOC.

Abstract: It is to provide an electrolyte material with which an increase in the water content can be suppressed even when the ion exchange capacity of a polymer having repeating units based on a monomer having a dioxolane ring is high; and a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions. It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F), and having an ion exchange capacity of at least 1.35 meq/g dry resin, the polymer (F) having repeating units (A) based on a perfluoromonomer having a precursor group of an ion exchange group and a dioxolane ring and repeating units (B) based on a perfluoromonomer having no precursor group and having a dioxolane ring, and having a TQ of at least 200° C.

Abstract: A coin-type lithium secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode active material including a silicon alloy material, a conductive agent including a carbon material, and a binder. The silicon alloy material includes a phase A including a lithium-silicon alloy and a phase B including an intermetallic compound of a transition metal element and silicon. In the lithium-silicon alloy, a ratio of lithium atoms relative to silicon atoms is 2.75 to 3.65 in a 100% state-of-charge.

Abstract: The invention relates to a media supply plate (10) for a fuel cell stack (12) comprising at least one anode gas terminal (14) and at least one cathode gas terminal (16). According to the invention the media supply plate (10) further comprises at least one anode waste gas terminal (18) and at least one cathode waste gas terminal (20). The invention further relates to a fuel cell system (52) using such a media supply plate (10) as well as a method for producing such a fuel cell system.

Abstract: The present invention provides a heating device for an end plate of a fuel cell stack, which can prevent a decrease in temperature of unit cells around the ends of the fuel cell stack by providing a structure for circulating high temperature coolant discharged from the fuel cell stack in the end plate. Non-uniform temperature distribution in the fuel cell stack can thereby be prevented. In particular, a heating device for an end plate of a fuel cell stack is provided wherein high temperature coolant flowing from the upstream of a coolant outlet manifold to the downstream is allowed to circulate through the inside of the end plate and to be discharged to the outside such that the thermal energy of the coolant is supplied to the end plate and, at the same time, transferred to unit cells adjacent to the end plate.

Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery having the same are disclosed. The anode active material for a lithium secondary battery includes a silicon alloy consisting of silicon and at least two kinds of metals other than silicon, each having the heat of mixing with the silicon of ?23 kJ/mol or less. The anode active material for a lithium secondary battery has a high capacity, and thus, is useful in fabricating a high-capacity lithium secondary battery. Also, the anode active material for a lithium secondary battery has a small crystal size of a silicon phase and consequently a small change in volume during charging/discharging, and thus, ensures excellent cycle life characteristics in applications to batteries.

Abstract: An ion-conducting composite electrolyte is provided comprising path-engineered ion-conducting ceramic electrolyte particles and a solid polymeric matrix. The path-engineered particles are characterized by an anisotropic crystalline structure and the ionic conductivity of the crystalline structure in a preferred conductivity direction H associated with one of the crystal planes of the path-engineered particle is larger than the ionic conductivity of the crystalline structure in a reduced conductivity direction L associated with another of the crystal planes of the path-engineered particle. The path-engineered particles are sized and positioned in the polymeric matrix such that a majority of the path-engineered particles breach both of the opposite major faces of the matrix body and are oriented in the polymeric matrix such that the preferred conductivity direction H is more closely aligned with a minimum path length spanning a thickness of the matrix body than is the reduced conductivity direction L.

Abstract: A membrane electrode assembly is provided for use in a fuel cell and utilizes an external manifold and seal structure which are molded directly to the gas diffusion layers. The integrated manifold and gas diffusion layers are formed as duplicate components which can be oriented 180 degrees offset to one another to create the MEA assembly with a catalyst coated membrane disposed therebetween. The integrated manifold and seal structures can be held together by heat pressing or other known connection techniques.

Abstract: Battery modules having interconnect members are provided. An interconnect member includes a first plate portion having a first thickness. The interconnect member further includes a second plate portion having a second thickness equal to the first thickness. The second plate portion extends generally parallel to the first plate portion. The interconnect member further includes a first vibration dampening portion coupled to the first and second plate portions. The first vibration dampening portion has a third thickness greater than the first thickness, such that vibrations induced on the first plate portion are attenuated when a portion of the vibrations pass through the first vibration dampening portion to the second plate portion.

Abstract: A method of producing a fuel cell includes: preparing a plurality of carbon nanotubes that are aligned substantially vertically to a plane of a substrate; supporting an electrode catalyst on the carbon nanotubes; forming an electrode layer by disposing an ionomer formed of a first solid polymer electrolyte on a surface of the carbon nanotubes on which the electrode catalyst is supported; and placing the electrode layer to face an electrolyte membrane formed of a second solid polymer electrolyte, which has a glass-transition temperature lower than that of the first solid polymer electrolyte, and bonding the electrolyte membrane to the electrode layer by applying a pressure higher than 5 MPa between the electrolyte membrane and electrode layer at a temperature that is higher than the glass-transition temperature of the second solid polymer electrolyte and that is lower than the glass-transition temperature of the first solid polymer electrolyte.

Abstract: Lithium-iron molecular precursor compounds, compositions and processes for making a cathode for lithium ion batteries. The molecular precursor compounds are soluble and provide processes to make stoichiometric cathode materials with solution-based processes. The cathode material can be, for example, a lithium iron oxide, a lithium iron phosphate, or a lithium iron silicate. Cathodes can be made as bulk material in a solid form or in solution, or in various forms including thin films.

Abstract: Provided are a positive electrode material for lithium ion batteries and a process for preparing the same. The positive electrode material for lithium ion batteries comprises a composite positive electrode material consists of LiCoO2 and an auxiliary positive electrode material, the general formula of the auxiliary positive electrode material is LiCo1-x-yNixMnyO2, wherein 0<x<0.9, 0<y<0.9, 0<x+y<0.9, and the LiCoO2 is a modified LiCoO2 coated with an Al2O3 film. The overcharge performance of the batteries can be significantly increased and the use amount of the overcharge additive can be reduced by using the positive electrode material so as to its improve the cycle performance of the batteries and improve the anti-overcharge safety in the special applications and the charging conditions.

Abstract: A battery pack includes at least one battery module provided with a plurality of battery cells each having a vent that discharges gas, the battery cells being arranged in one direction, and a housing accommodating the battery module, the housing including an inlet and an outlet for air, and an inlet opening and closing device disposed in the inlet.

Abstract: A separator for a fuel cell and a method for manufacturing the same comprise two sheets of metal plates integrally formed to minimize contact resistance between an upper metal plate and a lower metal plate. The method for manufacturing the separator includes steps of preparing an upper metal plate and a lower metal plate, each plate having opposing main sides, and applying a coating liquid containing a polymer composite material on both sides of the upper and lower metal plates, to form first and second composite material layers on both sides of the upper plates and third and fourth composite material layers on both sides of the lower plates. The method further includes stacking the upper metal plate on the lower metal plate, before drying the respective composite material layers, and integrally bonding the second composite material layer and the third composite material layer to form a single intermediate composite material layer.

Abstract: The secondary battery includes one or more anodes that include amorphous carbon and a carbon fiber. In some instances, the one or more anodes exclude graphite. The battery also includes one or more cathodes and an electrolyte in contact with the one or more anodes. The electrolyte includes one or more lithium salts in a solvent.

Abstract: The present invention provides an electrode active material for an electricity storage device, having a structure represented by following formula (1). In the formula (1), R1 to R6 each denote independently a hydrogen atom (except for a case where all of R1 to R6 denote hydrogen atoms), a halogen atom, an optionally substituted phenyl group, an optionally substituted heterocyclic group, or an optionally substituted hydrocarbon group having 1 to 4 carbon atoms.

Abstract: An electric storage cell includes a hard casing configured to house an electric storage element and electrolyte, and an electrode terminal connected to a charge collector of the electric storage element and exposed to an outside of the hard casing, the electric storage cell being chargeable/dischargeable using the electrode terminal, wherein the electrode terminal has a charge collector connecting portion connected to the charge collector through an opening formed in the hard casing, and a main body bonded to an outer circumferential surface of the hard casing to make a surface contact.

Abstract: A magnesium-ion cell comprising (a) a cathode comprising a carbon or graphitic material as a cathode active material having a surface area to capture and store magnesium thereon, wherein the cathode forms a meso-porous structure having a pore size from 2 nm to 50 nm and a specific surface area greater than 50 m2/g; (b) an anode comprising an anode current collector alone or a combination of an anode current collector and an anode active material; (c) a porous separator disposed between the anode and the cathode; (d) electrolyte in ionic contact with the anode and the cathode; and (e) a magnesium ion source disposed in the anode to obtain an open circuit voltage (OCV) from 0.5 volts to 3.5 volts when the cell is made.

Abstract: The present invention provides a gas diffusion layer for a fuel cell vehicle with improved operational stability, the gas diffusion layer, which functions to supply hydrogen and air (oxygen) as reactant gases to a fuel cell stack, discharge product water generated by an electrochemical reaction, and transmit generated electricity, being formed with a thinned structure. For this purpose, the present invention provides a gas diffusion layer for a fuel cell vehicle with improved operational stability, the gas diffusion layer being formed with a dual layer structure including a microporous layer and a macroporous substrate, the macroporous substrate being formed of a material selected from the group consisting of carbon fiber felt and carbon fiber paper, the gas diffusion layer being thinned to have a thickness of 200 to 300 ?m at 25 kPa and a thickness of 170 to 250 ?m at 1 MPa, a density of 0.20 to 0.