Abstract: A positive electrode active material composition, a positive electrode plate, a battery, and an electrical apparatus are provided. The composition includes a first positive electrode active material and a second positive electrode active material having a crystal form different from that of the first. The first active material comprises a phosphate. The particle size distribution curve of the composition exhibits at least two volume distribution peaks. The peak with the highest intensity is defined as the first peak, with a corresponding volume-based particle size Dv1. The peak with the second highest intensity is defined as the second peak, with particle size Dv2. The relative difference in particle sizes satisfies the condition 0<|Dv1?Dv2|/Dv1?50. This dual-peak structure improves the electrochemical performance of the electrode.

Abstract: A rechargeable battery cell includes an electrode and an ion exchange material arranged to define an interpenetrating interface with at least a portion of the electrode. Providing an interpenetration interface in intimate contact can include completely or partially embedding the electrode in the ion exchange material, or alternatively, surrounding the electrode or discrete portions of the electrode with a thin film of ion exchange material. In one embodiment, electrodes can be particles fully or partially embedded, coated with, or partially contacting ion exchange material.

Abstract: Disclosed is an electrochemical cell comprising: an active anode metal electrochemically deposited on a host material functionalized with one or more electrochemically active groups, wherein the active anode metal comprises an electrochemically active surface; b) an electrolyte; and c) a solid electrolyte interphase layer disposed on the electrochemically active surface of the active anode metal and comprising a first metal salt, wherein the first metal salt is a first reaction product of an electrochemical decomposition of at least a portion of one or more electrochemically active groups; wherein a metal cation in the first metal salt and the active anode metal comprise the same metal; and wherein the electrochemical cell is substantially stable for 200-600 plating/stripping cycles at a temperature from about ?60° C. to about 45° C.

Abstract: Disclosed is an electrolyte solution for a lithium secondary battery capable of improving the lifetime of a lithium secondary battery, by including a certain amount of magnesium chloride (MgCl2) in the electrolyte to form a stable electrode protective layer that prevents the consumption of salts and additives in the electrolyte solution, and a lithium secondary battery comprising the same. The electrolyte solution for the lithium secondary battery comprises a first solvent comprising a heterocyclic compound containing at least one of an oxygen atom and a sulfur atom; a second solvent comprising at least one of an ether-based compound, an ester-based compound, an amide-based compound, and a carbonate-based compound; a lithium salt; magnesium chloride; and lithium nitrate.

Abstract: In an embodiment a fuel cell includes a cell stack having a plurality of unit cells stacked in a first direction, first and second end plates disposed at both side ends of the cell stack, respectively, the second end plate having a resin part; and a sacrificial electrode located at the resin part of the second end plate adjacent to a cell configured to provide a highest potential for the unit cells, wherein the second end plate includes an inner side surface facing the cell stack, and wherein the resin part, at which the sacrificial electrode is located, is located on the inner side surface of the second end plate.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the separator includes a first surface facing the positive electrode and a second surface facing the negative electrode, an adhesive layer is formed on the second surface or each of the first surface and the second surface, the adhesive layer includes inorganic particles and an organic binder, and a ratio of a peeling strength between the separator and the adhesive layer to a peeling strength between the negative electrode and the adhesive layer is more than 0 and 4.0 or less.

Abstract: An electrochemical cell includes a membrane, a catalyzed electrode facing the membrane, the electrode including a magnetic electrocatalyst in contact with an ionomer, an electromagnet, and a controller programmed to activate the electromagnet to form an oscillating magnetic field arranged to selectively increase temperature of the magnetic electrocatalyst, based on one or more conditions, to increase kinetics of a reaction at the catalyzed electrode or remove water from the electrode.

Abstract: An electrochemical cell assembly (300, 500) comprising a base plate (308) and a top plate (303) between which a stack of planar cell units (306) and at least one positive (302, 507) and at least one negative electrical end plate (302, 507) are disposed in compression by means of compression means (307) acting between the base plate (308) and top plate (303). At least one of the electrical end plates (302, 507) is connected or integrally formed with, and in electrical contact with, an electrical stud (301, 505) that extends from a base portion of the at least one electrical end plate (302, 507) and passes through an opening in one of the base plate (308) and top plate (303) to form an electrical terminal. A fluidic seal is maintained by the compression means (307) between the base portion and the respective one of the base plate (308) and top plate (303), so as to prevent loss of fluid through the opening.

Abstract: A power storage assembly having a gasket containing a copolymer containing a tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of the fluoro(alkyl vinyl ether) unit of 2.0 to 6.0% by mass with respect to the whole of the monomer units, a melt flow rate of 0.5 to 55 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

Abstract: An energy system according to an embodiment of the present disclosure may include: a pallet including a base having an insertion portion to which a transport means is coupled and a fan assembly detachably inserted into the insertion portion and including at least one fan; and at least one reuse battery seated on the pallet.

Abstract: A battery module including a battery cell stack in which a plurality of battery cells are stacked in a first direction, and a body located on one side of the battery cell stack, wherein the body includes a cavity configured to receive an extinguishing material, the cavity having an inlet and an outlet, and at least one rupture part for one of the inlet and outlet.

Abstract: A waterproof structure for a battery pack includes: a waterproof tray on which a battery module included in a battery pack is placed; and a waterproof cover that covers the battery pack. The waterproof tray includes a bottom portion including an edge and housing the battery module, and a side wall portion extending from the edge. The waterproof cover includes an edge. The edge is located outside the side wall portion in a bottom view of the waterproof structure for the battery pack.

Abstract: Disclosed is an electrolyte solution for a lithium secondary battery capable of improving the lifetime of a lithium secondary battery, by including a certain amount of magnesium chloride (MgCl2) in the electrolyte to form a stable electrode protective layer that prevents the consumption of salts and additives in the electrolyte solution, and a lithium secondary battery comprising the same. The electrolyte solution for the lithium secondary battery comprises a first solvent comprising a heterocyclic compound containing at least one of an oxygen atom and a sulfur atom; a second solvent comprising at least one of an ether-based compound, an ester-based compound, an amide-based compound, and a carbonate-based compound; a lithium salt; magnesium chloride; and lithium nitrate.

Abstract: The present invention relates to an electrode assembly having an external shape fixation frame, and more particularly an electrode assembly including a unit cell including one or more electrodes and one or more separators, wherein the electrode assembly is (1) a stacked type electrode assembly, (2) a stacked and folded type electrode assembly, or (3) a wound type electrode assembly, and the electrode assembly includes an external shape fixation frame configured to wrap a portion of an outer surface of the electrode assembly, and a lithium secondary battery including the same.

Abstract: A redox battery comprises a plurality of redox battery cells stacked in a stacking direction, wherein each of the redox battery cells comprises a first half cell connected to a positive current collector, a second half cell connected to a negative current collector and an ion exchange membrane separating the first and second half cells. The redox battery additionally comprises a positive conducting bus bar extending in the stacking direction and electrically connecting the positive current collectors of the redox battery cells in parallel, and a negative conducting bus bar extending in the stacking direction and electrically connecting the negative current collectors of the redox battery cells in parallel. One or both of the positive and negative bus bars are configured as fastening means for mechanically fastening the stacked redox battery cells in the stacking direction.

Abstract: An energy storage device is provided that includes a first electrode, a second electrode, and a polymer electrolyte membrane disposed between the first electrode and the second electrode. The polymer electrolyte membrane includes a copolymer network including a polyoxide and a polysulfide. The polymer electrolyte membrane is prelithiated by deep discharging of the battery of in a voltage range of ?0.5 V to 5.0 V such that the polymer electrolyte membrane after deep discharging includes additional lithium ions stored therein as compared with prior to deep discharging.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, wherein the positive electrode active material may uniformly improve the particle stability of the small particle and the large particle by controlling a slope of a concentration gradient in which cobalt in the small particle and the large particle decreases from a surface portion toward a central portion, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

Abstract: Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent include a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high pressure solvent properties. Examples of a class of compressed gases that can be used as solvent for electrolytes include hydrofluorocarbons, in particular fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane. Also disclosed are battery and supercapacitor structures that use compressed gas solvent-based electrolytes and techniques for constructing such energy storage devices.

Abstract: The present invention relates to a battery module sensing unit having a simple structure, more particularly a battery module sensing unit including a sensing member (120), an FPCB (100) including the sensing member (120), a busbar frame (300) connected to the FPCB (100), and a busbar (200) coupled to the busbar frame (300), wherein the FPCB (100) and the busbar (200) are directly coupled to each other while overlapping each other.

Abstract: A zinc bromide electrochemical cell comprises an anode assembly, a cathode assembly, and a container. The anode assembly comprises an anode pouch comprising a first insulating microporous membrane. An anode is enclosed in the anode pouch. The cathode assembly comprises a cathode pouch comprising a second insulating microporous membrane. A cathode is enclosed in the cathode pouch. A first plurality of protrusion elements are on the first insulating microporous membrane. A second plurality of protrusion elements are on the second insulating microporous membrane.