Abstract: Provided is technology which can prevent breakage of a collector in a battery using an electrode sheet including an uncoated part with a narrowed width. A battery includes a collector bundle including an uncoated part stacked in a plurality of layers formed at each side edge in the width direction of the electrode body. A junction part including compressed uncoated part in plural layers is formed at an outer end in the width direction of the collector bundle. A converging part including the collector in plural layers converging so that the surface is inclined toward the junction part is formed inside in the width direction. The foil collecting angle of the collector bundle is 120° or more and 160° or less, and an R part with a curvature radius of 0.3 mm or more is formed at the converging part side end of the junction surface of the collector terminal.

Abstract: A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell has a casing of first and second ceramic substrates that are hermetically secured to each other to provide an internal space housing an electrode assembly. First and second conductive pathways extend through the ceramic substrates. The pathways have respective inner surfaces that are conductively connected to the respective anode and cathode current collectors and respective outer surfaces that provide for connection to a load. An electrolyte in the internal space of the housing activates the electrode assembly.

Abstract: A fire suppression system for use with lithium-ion battery storage containers is provided. The system utilizes water as a fire suppressant, which is stored in a tank and delivered to a battery module within the container that is experiencing a thermal event. After a predetermined time from the beginning of water flow, a controller within the system actuates one or more fans to ventilate the storage container to expel hazardous gases produced by the thermal event.

Abstract: A porous film, including a binder and inorganic particles. The porous film includes pores formed by the binder. The pores at least include a part of the inorganic particles. The inorganic particles have particle sizes that Dv10 is in a range of 0.015 ?m to 3 ?m, Dv50 is in a range of 0.2 ?m to 5 ?m, and Dv90 is in a range of 1 ?m to 10 ?m. Dv10 of the inorganic particles is less than Dv50 of the inorganic particles, and Dv50 of the inorganic particles is less than Dv90 of the inorganic particles, and the inorganic particles have particle sizes that the ratio of Dv90 to Dv10 is in a range of 2 to 100.

Abstract: The present invention relates to an anode for lithium secondary battery and a lithium secondary battery comprising the same, the anode for lithium secondary battery comprising a current collector; and an anode active material layer which is formed on one surface of the current collector, and comprises an anode active material and a cellulose-based compound which has a weight-average molecular weight (Mw) of 500,000 g/mol to 700,000 g/mol and a substitution degree of 0.9 to 1.0, wherein the anode for lithium secondary battery has a loading level (L/L) of 13 mg/cm2 or greater.

Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.

Abstract: In an aspect a system for battery environment management in an electric aircraft, where in the system include, at least a at least a battery pack mounted within a fuselage of an electric aircraft. A battery pack may include a plurality of batteries configured to provide electrical power to the electric aircraft. A battery pack may also include a pouch cell. Adjacent to the battery pack there may be at least a channel. A channel is configured to provide a flow path for directing battery ejecta to a predetermined location.

Abstract: Batteries according to embodiments of the present technology may include an electrode stack. The electrode stack may include an anode electrode having an anode current collector, and an anode active material disposed on the anode current collector. The anode electrode may define one or more first apertures through the anode electrode. The electrode stack may also include a cathode electrode having a cathode current collector, and a cathode active material disposed on the cathode current collector. The cathode electrode may define one or more second apertures through the cathode electrode.

Abstract: Battery charging systems having battery charging circuits are described. The battery charging circuit can be located within a battery housing. Alternatively, the battery charging circuit can be located within a charging shoe housing. Also described are power source modules. In addition, various methods of charging and discharging are described.

Abstract: The present invention provides a gel-like electrolyte having excellent electrolyte solution retention ability. The resin composition contains an electrolyte composition containing a solvent and an electrolyte and a vinylidene fluoride copolymer. The vinylidene fluoride copolymer is a copolymer of vinylidene fluoride and a comonomer represented by Formula (1) below, wherein R1 and R2 are each independently a hydrogen atom or a fluorine atom, R3 is a hydrogen atom, a fluorine atom, or an alkyl group having from 1 to 5 carbons, and R4 is a basic group that is capable of forming an intermolecular hydrogen bond.

Abstract: Disclosed are an electrolyte for a lithium secondary battery and a lithium secondary battery comprising the same. The electrolyte for a lithium secondary battery, according to an embodiment, can comprise: a nonaqueous organic solvent; a lithium salt; a first additive comprising a compound represented by a specific chemical formula; and a second additive including at least one of lithium difluorophosphate (LiPO2F2), a cyclic carbonate including a fluorine atom, and a dinitrile compound.

Abstract: Electrolyte additives for energy storage devices comprising compounds containing one, two, or more triple-bonded moieties are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Compounds containing one, two, or more triple-bonded moieties may serve as additives to the electrolyte composition.

Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery including the same, and to a polymer electrolyte for a secondary battery, which includes unit A derived from a poly(ethylene oxide)-based polymer, and a lithium secondary battery including the same.

Abstract: An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

Abstract: An electrode binder resin composition containing a polyamic acid, a water-soluble polymer other than the polyamic acid, and a solvent. The use of the electrode binder resin composition improves cyclic characteristics.

Abstract: A miniature electrochemical cell having a total volume that is less than 0.5 cc is described. The cell casing is formed by joining two ceramic casing halves together. One or both casing halves are machined from ceramic to provide a recess that is sized and shaped to contain the electrode assembly. The opposite polarity terminals are metal feedthroughs, such as of gold, and are formed by brazing gold into openings machined into one or both of ceramic casing halves. A thin film metallization, such as of titanium, contacts an edge periphery of each ceramic casing half. The first ceramic casing half is moved into registry with the second ceramic casing half so that the first and second ring-shaped metallizations contact each other.

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: a first oligomer represented by Formula 1; a second oligomer including a first repeating unit which is represented by Formula 2a and derived from a styrene monomer; a polymerization initiator; a lithium salt; and a non-aqueous solvent, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

Abstract: A solid electrolyte material can include an ammonium-containing complex metal halide. In an embodiment, the ammonium-containing complex metal halide can be represented by (NH4)nM3-z(Mek+)fXn+3-z+k*f, wherein 0<n, 0?z<3, 2?k<6, 0?f?1; M comprises at least an alkali metal element, X comprises a halogen, and Me comprises a divalent metal element, a trivalent metal element, a tetravalent metal element, a pentavalent metal element, a hexavalent metal element or any combination thereof.

Abstract: The present technology relates to gel electrolytes for using in lithium-ion electrochemical cells and methods of forming the same. For example, the method may include adding one or more gelation reagents to an electrochemical cell including one or more liquid electrolyte precursors. The one or more gelation reagents include one or more initiators and one or more crosslinking agents. Each of the one or more initiators may be one of a thermal initiator and an actinic/electron beam initiator.

Abstract: A battery and a manufacturing method thereof are disclosed. The battery includes at least one battery cell and at least one switching element; each of the at least one switching element is respectively connected to one or more of the at least one battery cell to control the one or more of the at least one battery cell.