Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative active material including a Si-carbon composite that includes Si nanoparticles and an amorphous carbon, wherein the negative active material has a sphericity of 0.7 or more, and a BET specific surface area of 10 m2/g or less.

Abstract: A fuel cell stack includes: a first stack including: first unit cells stacked; and a first outer peripheral surface around a first stacking direction of the first unit cells; a second stack that is juxtaposed to the first stack including; second unit cells stacked along the first stacking direction of the first unit cells; and a second outer peripheral surface around a second stacking direction of the second unit cells; an external gas manifold that supplies and discharges a reactant gas to and from the first and second stacks; and an external coolant manifold that supplies and discharges a coolant to and from the first and second stacks.

Abstract: The present invention relates to a lithium-carbon composite having cavities formed therein and a method of manufacturing the same, the method including adding and mixing an organic solvent having an aromatic ring with a lithium precursor, arranging a pair of metal wires in the organic solvent, forming a lithium-carbon composite in which a carbon body is doped with lithium through plasma discharge in a solution, and annealing the lithium-carbon composite in order to remove hydrogen from the lithium-carbon composite and form cavities in the lithium-carbon composite. Accordingly, a lithium-carbon composite can be simply synthesized using plasma discharge in a solution, and the synthesized lithium-carbon composite can be annealed to thus form cavities therein, thereby increasing the lithium charge and discharge performance of a lithium secondary battery using the lithium-carbon composite.

Abstract: To provide a hydrogen storage unit that can heat a storage container including hydrogen absorbing alloy with favorable thermal efficiency, and a fuel cell system provided with the hydrogen storage unit. The cell body of the fuel cell is provided with a fuel cell stack configured to react hydrogen and oxygen to generate electricity, and a stack cooling passage configured to cool the fuel cell stack by circulation of a heat medium. The hydrogen storage unit of the hydrogen supply unit of the fuel cell is provided with: a housing; a plurality of cylinders that are housed in the housing and include hydrogen absorbing alloy; and a temperature control member having a heat medium flowing through the temperature control member so as to heat or cool the cylinder.

Abstract: An electrochemical device of the present invention includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode includes a positive current collector containing aluminum, a positive electrode material layer containing a conductive polymer, and an aluminum oxide layer disposed on a surface of the positive current collector. The aluminum oxide layer contains fluorine.

Abstract: An organic positive electrode active material for aqueous redox flow batteries, and more particularly, to technology of applying an organic positive electrode active material to make up for the drawbacks of conventional aqueous redox flow batteries. An aqueous redox flow battery to which a particular positive electrode active material is applied has no problems regarding metal deposition, and can also be useful in realizing a high energy density because the positive electrode active material may be used at high concentration due to an increase in solubility in a solvent, attaining a high working voltage, and enhancing energy efficiency. Also, the aqueous redox flow battery has excellent economic feasibility because an expensive organic electrolyte is not used.

Abstract: Laminable microporous polymer webs with good dimensional stability are disclosed herein. Methods of making and using laminable microporous polymer webs with good dimensional stability are also disclosed herein.

Abstract: This application provides a connecting assembly, a battery module, a battery pack, a device, and a manufacturing method. The connecting assembly includes an insulation board and a busbar. The insulation board includes a hollow portion, a first side, and a second side. The busbar includes a first busbar and a second busbar. The first busbar is disposed on the first side of the insulation board. The second busbar is disposed from the second side into the hollow portion of the insulation board. The battery module includes a battery cell and a module frame. The battery cell is accommodated in the module frame. A device using a battery cell as a power supply includes: a power source configured to provide a driving force for the device; and a battery module configured to provide electrical energy to the power source.

Abstract: Disclosed is a doped lithium manganese iron phosphate-based particulate for a cathode of a lithium-ion battery. The particulate includes a composition represented by a formula of Mm-LixMn1-y-zFeyM?z(PO4)n/C, wherein M, M?, x, y, z, m, and n are as defined herein. Also disclosed is a powdery material including the particulate, and a method for preparing the powdery material.

Abstract: A method and system for creating low corrosion passivation layer on an anode in a metal-air cell comprise asserting high negative potential and low drawn current density on the cell after its operational parameters have stabilized after the cell has been powered-on. As a result the H2 evolution rate momentarily raises and then drops sharply, thereby causing the creation of a passivation layer on the face of the anode.

Abstract: A battery module housing includes a top plate and a bottom plate forming an upper wall and a lower wall, respectively, and a first side plate and a second side plate forming side walls, respectively, the battery module housing having a rectangular tube shape provided to accommodate battery cells in an inner space thereof, wherein the battery module housing has four bonding portions each including an adhesive along a longitudinal direction, the bonding portions located at two sites between opposing side edges of the top plate and top surfaces of the first side plate and second side plate, respectively, and at two sites between opposing side edges of the bottom plate and bottom surfaces of the first side plate and second side plate, respectively.

Abstract: An electrolyte solution for a lithium-ion battery is provided. The electrolyte solution contains at least a solvent and a lithium salt. The lithium salt is dissolved in the solvent. The solvent contains acetic anhydride at a concentration not lower than 80 vol %.

Abstract: A solid ion conductor compound includes a compound represented by Formula 1: Li6?wHf2?xMxO7?yZy??Formula 1 where, in Formula 1, M is an element having an oxidation number of a and a is 5, 6, or a combination thereof, Z is an element having an oxidation number of ?1, and 0<x<2, 0?y?2, and 0<w<6 and w=[(a?4)×x]+y.

Abstract: An anode material for a lithium ion secondary battery including a carbon material satisfying the following (1) to (3), (6), and (7): (1) an average particle size (D50) is 22 ?m or less, (2) D90/D10 of particle sizes is 2.2 or less, (3) a linseed oil absorption amount is 50 mL/100 g or less, (6) a portion of the carbon material with a sphericity of from 0.6 to 0.8 and a particle size of from 10 ?m to 20 ?m is 5% by number or more, and (7) a portion of the carbon material with the sphericity of 0.7 or less and a particle size of 10 ?m or less is 0.3% by number or less.

Abstract: Nanoporous carbon-based scaffolds or structures, and specifically carbon aerogels and their manufacture and use thereof. Embodiments include a cathode material within a lithium-air battery, where the cathode is formed of a binder-free, monolithic, polyimide-derived carbon aerogel. The carbon aerogel includes pores that improve the oxygen transport properties of electrolyte solution and improve the formation of lithium peroxide along the surface and/or within the pores of the carbon aerogel. The cathode and underlying carbon aerogel provide optimal properties for use within the lithium-air battery.

Abstract: A method for manufacturing a spiral-wound battery is provided. The method includes the following steps: performing surface plasma treatment on a current collector; coating electrode slurry on a surface of the current collector, to form an electrode foil; performing surface plasma treatment on an isolating film, to improve hydrophilia of the isolating film; arranging and electrically connecting a plurality of metal conductive handles to the electrode foil, where the electrode foil is divided into a plurality of sections, and each section of the electrode foil corresponds to a jelly roll; and sequentially winding the isolating film and the electrode foil to form the spiral-wound battery. According to the method for manufacturing a spiral-wound battery provided in the present disclosure, internal impedance of a jelly roll is effectively reduced, and advantages of a high yield and low costs of a manufacturing process of the spiral-wound battery are maintained.

Abstract: A secondary battery has increased space utilization efficiency and can increase a capacity of an electrode assembly within a given dimension. In an exemplary embodiment, a secondary battery includes: an electrode assembly including an electrode uncoated portion; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; and a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent at an end of the terminal connector and positioned between the electrode assembly and the case, and the electrode connector includes a first region connected to the terminal connector and protruding toward the case, and a second region positioned under the first region and protruding toward the electrode assembly.

Abstract: Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein a BET specific surface area of the anode active material particles is 1.9 m2/g or more and 14.2 m2/g or less.

Abstract: An electrode structure for use in an energy storage device comprising a population of electrodes, a population of counter-electrodes and a microporous separator separating members of the electrode population from members of the counter-electrode population. Each member of the electrode population comprises an electrode active material layer and an electrode current conductor layer, and each member of the electrode population has a bottom, a top, a length LE, a width WE and a height HE, wherein the ratio of LE to each of WE and HE is at least 5:1, the ratio of HE to WE is between 0.4:1 and 1000:1, and the electrode current collector layer of each member of the electrode population has a length LC that is measured in the same direction as and is at least 50% of length LE.

Abstract: The electrical equipment battery includes: a circuit board mounted with a heat generating element; and an outer case having a heat radiation plate made of metal. A heat transfer space is defined between the circuit board and the heat radiation plate, and then an electrical-insulating and heat-conducting gel is filled in the heat transfer space. Heat energy of the heat generating element is radiated to the outside via the heat radiation plate of the outer case. The heat radiation plate is provided with a flow-out block partition on the outer side of the heat transfer space. The flow-out block partition suppresses the electrical-insulating and heat-conducting gel from flowing out from the heat transfer space.