Abstract: Electrolytes and electrolyte additives for energy storage devices comprising linear carbonate compounds.

Abstract: The present application provides a battery including an electrode assembly, a package encapsulating the electrode assembly, and a plurality of bonding portions located between the package and the electrode assembly, wherein at least partially of the bonding portions are disposed at interval. The purpose of the present application is to provide a battery that reduces the tear risk of the aluminum foil and improves safety.

Abstract: A wearable pouch operable to hold at least one portable battery pack and other power or communications equipment. The wearable pouch includes a main body with a front side, a back side opposite the front side, at least one sealable opening, and at least one opening for at least one lead from the at least one portable battery pack secured within the wearable pouch.

Abstract: A battery module includes a plurality of battery units arranged in a first direction and each including a plurality of battery cells arranged in a second direction perpendicular to the first direction, and two holders respectively located at two ends of the plurality of battery units in a third direction perpendicular to the second direction and the first direction. Each of the holders includes a main body portion. A plurality of guide portions are provided on a side of the main body portion close to the plurality of battery units, and are arranged corresponding to the plurality of battery units. The guide portions extend toward the plurality of battery units in the third direction, and are configured to provide guidance for movement of the corresponding battery cells. Extension lengths of the plurality of guide portions gradually decrease in the first direction.

Abstract: The present invention discloses a full-gradient nickel cobalt manganese positive electrode material, a ruthenium oxide coated material and a preparation method thereof. The material has a chemical formula of LiNixCoyMn(1-x-y)O2, wherein, 0.5?x?0.9, 0.05?y?0.40, 1-x-y>0. A content of the nickel element is gradually decreased from a core portion to an outer surface of the full-gradient nickel cobalt manganese positive electrode material. A content of the manganese element is gradually increased from the core portion to the outer surface of the full-gradient nickel cobalt manganese positive electrode material. And, a content of the cobalt element is uniformly distributed in the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the ruthenium oxide coated material.

Abstract: Provided are a composition for a lithium ion secondary battery separator containing: a liquid medium; and 40 mass % or less of a first compound including a function-displaying functional group and having a molecular weight of 50,000 or less, and having a surface tension of 15 mN/m to 30 mN/m, and a two-part composition for a lithium ion secondary battery separator including: a first liquid containing a first compound and first liquid medium; and a second liquid containing a second compound and second liquid medium, wherein the first compound includes a function-displaying functional group and has a molecular weight of 50,000 or less, the second compound is reactive with the first compound and has a molecular weight of 50,000 or less, and the first and second liquids each contain the corresponding compound in a proportion of 40 mass % or less and have a surface tension of 15 mN/m to 30 mN/m.

Abstract: An electronic device is provided. The electronic device includes a housing, a main circuit board, a battery, a battery protection module disposed on one side surface of the battery, a protective holder that surrounds at least part of the battery protection module, and a flexible printed circuit board that extends from one side surface of the battery protection module and that is connected to the main circuit board. The flexible printed circuit board includes a first portion extending from the battery protection module in a second direction perpendicular to a first direction toward the main circuit board, a second portion extending from the first portion while being bent, a third portion extending from the second portion in a third direction opposite to the second direction, a fourth portion extending from the third portion in the first direction, and a connector connected to an end portion of the fourth portion and connected to the main circuit board.

Abstract: A battery holder is to be stored in a storage part of an electronic device and to be integrated with a casing of the electronic device. The battery holder includes a case in which a battery is to be stored, and an electric connection part provided in the case. The electric connection part is electrically connected to an electrode of a stored battery and is electrically connected to the power supply terminal, when the battery holder is stored in the storage part of the electronic device.

Abstract: A battery module according to an embodiment includes: a cell structure configured by stacking a plurality of secondary battery cells; a frame including at least one opening and configured to accommodate the cell structure in an inner space thereof through the opening; and a side plate covering the opening and including a protection cover disposed between the cell structure and the frame to cover the cell structure, wherein the protection cover may include a convex edge toward the inside of the cell structure.

Abstract: A vent adapter for a lead-acid battery includes a first side configured to mate with a vent port of the lead-acid battery via a first connector having a first geometry; and a second side in fluid communication with the first side and configured to mate with a vent passage of an automobile via a second connector having a second geometry, wherein the first and second geometries have respective shapes that are different from one another.

Abstract: An example of a negative electrode includes silicon nanoparticles having a carbon coating thereon. The carbon coating has an oxygen-free structure including pentagon rings. The negative electrode with the silicon nanoparticles having the carbon coating thereon may be incorporated into a lithium-based battery. In an example of a method, silicon nanoparticles are provided. A carbon precursor is applied on the silicon nanoparticles. The carbon precursor is an oxygen-free, fluorene-based polymer. Then the silicon nanoparticles are heated in an inert gas atmosphere to form the carbon coating on the silicon nanoparticles. The carbon coating formed on the silicon nanoparticles has an oxygen-free structure including pentagon rings.

Abstract: A lithium metal oxide suitable for use as a cathode material in a rechargeable battery having a general formula of: LixMzM?zOuFy, where x is 1.80<x<2.20, y=1, and more specifically 1.90<x<2.10, with 1.80<u<2.20. Preferably, 1.90<u<2.10, and 0.80<y<1.20, or more specifically, 0.90<y<1.10. The lithium metal oxide has a cation-disordered rocksalt structure, wherein M is a transition metal selected from a first group consisting of Ni, Mn, Co, Fe, and combinations thereof. M? is a transition metal selected from a second group consisting of Ti, Zr, Nb, Mo, Sn, Hf, Te, Sb, and combinations thereof. M has a first oxidation state q and M? has a second oxidation state q?, with (q/z)+(q?/z?)=+3, preferably +2.7?q/z)+(q?/z?)?+3.3.

Abstract: Core-shell nanostructures with platinum overlayers conformally coating palladium nano-substrate cores and facile solution-based methods for the preparation of such core-shell nanostructures are described herein. The obtained Pd@Pt core-shell nanocatalysts showed enhanced specific and mass activities towards oxygen reduction, compared to a commercial Pt/C catalyst.

Abstract: A method for manufacturing a structure comprising and electrode assembly having a porous electrically insulating material, and first and second endplates, is provided. The electrode assembly comprises a population of unit cells stacked in series in a stacking direction, opposing first and second longitudinal end surfaces separated along the stacking direction. First and second endplates are separated in the stacking direction and overlie the first and second longitudinal end surfaces. According to embodiments of the structure, (i) each unit cell comprises an electrode structure, a counter-electrode structure, and an electrically insulating separator between the electrode and counter-electrode structures, (ii) the electrode structures, counter-electrode structures and electrically insulating separators within each unit cell have opposing first and second vertical end surfaces separated in a vertical direction, and (iii) the vertical direction is orthogonal to the stacking direction.

Abstract: A battery module includes a battery stack, a battery cooling duct, and a gas exhaust duct. Cooling air for the battery stack flows through the battery cooling duct. A gas emitted from the battery stack flows through the gas exhaust duct. A middle portion of the gas exhaust duct is contained and shrunk in the battery cooling duct.

Abstract: In certain embodiments, an electrode includes a body of material formed in substantial part of carbon, the body having an exterior surface and an interior located within the exterior surface, and a plurality cavities located in the interior of the body. Each of the cavities is in communication with the exterior of the body and has an interior surface. The cavities can each be sized to accommodate a battery separator located therein and substantially covering the interior surface of the cavity.

Abstract: A battery module (1) for an electric vehicle has battery cells (3) stacked behind one another to form a battery cell package (4) in a multipart battery module housing (2). An end plate (5) is on an end of the battery cell package (4). The battery module housing (2) has a central portion (6) and a housing end plate (7) at an end of the central portion (6). A gap (9) between the battery cell package (4) and an inner surface of the central portion (6) is filled with a thermally conductive medium. The end plate (5) has a spraying point (11) for introducing the thermally conductive medium and a distribution channel (10) for guiding the thermally conductive medium from the spraying point (11) into spaces between the battery cell package (4) and the inner surface of the central portion (6).

Abstract: The present invention relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, wherein the safety coating comprises a polymer matrix, a conductive material and an inorganic filler, wherein the polymer matrix comprises at least two types of polymer materials, and the first type of polymer material is fluorinated polyolefin and/or chlorinated polyolefin, and the solubility of the second type of polymer material in oil solvent is smaller than the solubility of the first type of polymer material; and the weight percentage of the first type of polymer material relative to the total weight of the polymer matrix, the conductive material and the inorganic filler is 17.5% or more. The positive electrode plate improves high temperature safety of electrochemical device.

Abstract: A binder for a secondary battery containing a fluorine-containing polymer (A) and polyvinylidene fluoride (B). The fluorine-containing polymer (A) contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation or an organic cation. Also disclosed is an electrode mixture and an electrode for a secondary battery including the binder, and a secondary battery including the electrode.

Abstract: A battery pack includes: battery cells including first battery cells and second battery cells, each of the first and second battery cells including a first end portion and a second end portion that are opposite each other in a length direction of the respective battery cell, adjacent first end portions being arranged in a stepped manner; and a case providing an accommodation space in which the battery cells and a cooling fluid to cool the battery cells are configured to be accommodated, the case including a first cover covering the first end portions of the battery cells, the first cover being arranged along a height difference between the first end portions of the first and second battery cells and defining a height difference space, corresponding to the height difference, on an outer side of the first cover.