Abstract: A method for producing a button cell includes providing a first metal housing part having a first housing plane region, providing a second metal housing part having a second housing plane region, and providing a cylindrical electrode winding having a first end side, a second end side, and an outer side. The electrode winding is formed from a multi-layer assembly wound in a spiral shape about an axis. The multi-layer assembly includes a positive electrode formed from a first current collector coated with a first electrode material, a negative electrode formed from a second current collector coated with a second electrode material, and a separator disposed between the positive electrode and the negative electrode. The method further includes placing the electrode winding into the first metal housing part and forming a cell housing by assembling together the first metal housing part and the second metal housing part.

Abstract: A secondary alkaline battery includes an anode, a cathode, and an electrolyte. The cathode includes a current collector, a cathode mixture in electrical contact with the current collector. The cathode mixture comprises: manganese oxide, a copper compound comprising copper, a salt of copper, an alloy thereof, or any combination thereof, a bismuth compound comprising bismuth, a salt of bismuth, or any combination thereof, and a conductive carbon. The secondary alkaline battery can also include a first composition in contact with the current collector and disposed between the current collector and the cathode mixture that includes copper, a salt of copper, an alloy thereof, or a combination thereof.

Abstract: A complex electrode assembly includes a first sheet-type wiring which extends in a lengthwise direction of the first sheet-type wiring and comprises a sheet region of which a width that is perpendicular to the lengthwise direction is greater than a thickness that is perpendicular to the lengthwise direction and a width direction of the first sheet-type wiring, and electrode assemblies which are arranged separate from each other in the lengthwise direction of the first sheet-type wiring and are electrically connected to the first sheet-type wiring. The first sheet-type wiring may be disposed to face an outer surface of each of the electrode assemblies.

Abstract: A controller of a fuel cell system performs cathode gas supply control to raise an average cell voltage of a fuel cell stack by increasing supply of cathode gas to the fuel cell stack, when electric power required to be generated by the fuel cell stack is equal to zero, and the average cell voltage is lower than a predetermined target voltage. Under the cathode gas supply control, the controller sets the target voltage when a predetermined condition indicating that crossleak is likely to occur is satisfied, to a value higher than a reference target voltage as the target voltage in the case where the condition is not satisfied.

Abstract: A negative electrode active material including a negative electrode active material particle. The negative electrode active material particle includes a silicon compound particle including a silicon compound (SiOx: 0.5?x?1.6). The silicon compound particle includes crystalline Li2SiO3 in at least part of the silicon compound particle. Among a peak intensity A derived from Li2SiO3, a peak intensity B derived from Si, a peak intensity C derived from Li2Si2O5, and a peak intensity D derived from SiO2 which are obtained from a 29Si-MAS-NMR spectrum of the silicon compound particle, the peak intensity A is the highest intensity, and the peak intensity A and the peak intensity C satisfy a relationship of the following formula 1.

Abstract: A method of preparing a sulfide solid electrolyte, the method including: first contacting a starting materials including Li2S, P2S5, and LiI in a first solvent to provide a precursor; and second contacting the precursor with a second solvent to prepare the sulfide solid electrolyte, wherein the first solvent includes a C1-C3 alkyl group or a cyclic ether compound which is unsubstituted or substituted with a C1-C3 alkoxy group, and the second solvent includes a C1-C10 hydrocarbon substituted with a C1 to C6 alkoxy group.

Abstract: A battery module having an improved cooling structure according to an embodiment of the present disclosure comprises: a pouch cell laminate comprising a first pouch cell and a second pouch cell located adjacent to the first pouch cell; and cooling fins configured to surround the circumference of an accommodation portion of each of the first pouch cell and the second pouch cell.

Abstract: A battery module having a plurality of battery cells and a module case configured to accommodate the plurality of battery cells is provided. The module case includes first and second cases coupled to each other by hooking and having shapes corresponding to each other.

Abstract: An electric power generation system includes a fuel cell module. The fuel cell module includes a fuel cell and a compression plate. The compression plate includes a surface contacting the fuel cell. A support plate is opposite the compression plate. The compression plate is movable in relation to the support plate. A pressurized fluid container is disposed between the compression plate and the support plate. The pressurized fluid container includes a casing defining an internal space configured to contain pressurized fluid. The electric power generation system further includes a pressurized fluid source and a fluid line coupled to the pressurized fluid source and the pressurized fluid container.

Abstract: The present invention pertains to an at least partially coated separator for an electrochemical cell, to a method for its preparation and to an electrochemical cell comprising such separator.

Abstract: The present invention provides a secondary battery 1 including: a battery case 10 having a safety valve 13; an electrode body 40; an electrolyte; and a cover member 41 arranged between the safety valve 13 and the electrode body 40 so as to be separated from the safety valve 13. The electrode body 40 is housed in the battery case 10 so that a lamination surface opposes the safety valve 13. The cover member 41 is configured to cover a portion of the battery case 10 in which the safety valve 13 is formed in a state where the cover member 41 holds the lamination surface of the electrode body 40.

Abstract: The present invention provides pitch-based ultrafine carbon fibers that have an average fiber diameter of at least 100 nm and less than 700 nm, and an average fiber length of 10 ?m or more, wherein C—O bonds >C?O bonds in terms of the abundance ratio (molar ratio) of C—O bonds and C?O bonds derived from the O1s orbital as measured by X-ray photoelectron spectroscopy.

Abstract: A positive active material including a core including a lithium intercalation compound and a coating compound on a surface of the core, the coating compound including Li2MO3 and a solid electrolyte compound represented by Chemical Formula 1 [Li1.3+4xAl0.3M1.7?x(PO4)3], wherein 0?x?0.7, and M is an element selected from Ti, Cr, Ga, Fe, Sc, In, Y, La, Mg, Sr, and combinations thereof; and a rechargeable lithium battery includes the positive active material.

Abstract: A lithium ion secondary battery at least includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode at least includes a positive electrode active material and a binder. The positive electrode active material includes more than or equal to 0.08 mass % of a lithium carbonate and a remainder of a lithium complex oxide. The binder is at least one selected from a group consisting of polytetrafluoroethylene, polyethylene oxide, and carboxymethylcellulose. The electrolyte solution at least includes a solvent and a lithium salt. The solvent is at least one of N,N-dimethylformamide and dimethylacetamide. A concentration of the lithium salt in the electrolyte solution is more than or equal to 1.9 mol/l and less than or equal to 2.3 mol/l.

Abstract: Described herein is a system and method for securing a battery in an enclosure with some degree of flexibility between the components to adjust for variations in size of the components. A battery holder assembly comprises a first housing component, a second housing component, and a battery. The first component includes a battery receptacle, comprising a plurality of flexible arms to surround a battery. The second component comprises a plurality of crush ribs having a solid support, that will wedge in-between the second housing component wall and the flexible arms, and that have a specially designed protrusion that is “crushable.” The flexible arms, which are in contact with the battery are wide enough to spread out the force, so as not to damage the battery, while the crush ribs will dig only into the plastic to arrest the battery's vibration while compensating for the remaining tolerance or variation between components.

Abstract: The present disclosure provides a nonaqueous electrolyte solution that is used in a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte solution contains a fluorinated solvent, a predetermined additive A and a predetermined additive B. A ratio (CA/CB) of concentration CA (mol/L) of the additive A and concentration CB (mol/L) of the additive B lies in a range of 1 to 30.

Abstract: Articles and methods for forming ceramic/polymer composite structures for electrode protection in electrochemical cells, including rechargeable lithium batteries, are presented.

Abstract: A button cell includes a housing having a metal cell cup and a metal cell top. An electrode winding disposed within the housing is formed from a multi-layer assembly that is wound in a spiral shape about an axis, the multi-layer assembly including a positive electrode formed from a first current collector and a negative electrode formed from a second current collector. A separator is disposed between the electrodes. The first current collector includes a first end section bent so as to extend out of the electrode winding forming an uncoated first flat layer adjacent to the electrode winding. An insulator is positioned (i) between the first flat layer and the first end side of the electrode winding or (ii) between a second flat layer and a second end side of the electrode winding.

Abstract: A positive electrode active material for a lithium secondary battery, including secondary particles formed by aggregation of primary particles capable of being doped and undoped with lithium ions, said positive electrode active material having: an ?-NaFeO2 type crystal structure represented by formula: Li[Lix(NiaCobMncMd)1-x]O2 (I), wherein 0?x?0.1, 0.7<a<1, 0<b<0.2, 0?c<0.2, 0<d<0.1, a+b+c+d=1, and M is at least one metal element selected from the group consisting of Fe, Cr, Ti, Mg, Al, Zr, Ca, Sc, V, Cr, Cu, Zn, Ga, Ge, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In and Sn; and a crystallite size ?/crystallite size ? ratio (?/?) of 1.60 to 2.40, wherein the crystallite size ? is within a peak region of 2?=18.7±1° and the crystallite size ? is within a peak region of 2?=44.4±1°, each determined by a powder X-ray diffraction measurement using Cu-K? radiation.

Abstract: A button cell includes a housing having a metal cell cup having a cell cup plane region and a metal cell top having a cell top plane region. An electrode winding is disposed within the housing, the electrode winding having a first end side and a second end side, the electrode winding being formed from a multi-layer assembly wound in a spiral shape, the multi-layer assembly including a positive electrode formed from a current collector. A conductor is connected to the current collector, wherein the conductor at least partially lies flat between (i) the first end side of the electrode winding and (ii) a first of the cell cup plane region or the cell top plane region. The first conductor is welded to the first of the cell cup plane region or the cell top plane region. An insulator is positioned between the first conductor and the electrode winding.