Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator, the separator including a porous substrate, and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a heat resistant binder including a (meth)acryl copolymer including a first structural unit and a second structural unit, the first structural unit being a structural unit of a (meth)acrylamide and the second structural unit being a structural unit of a (meth)acrylic acid, a (meth)acrylate, a (meth)acrylonitrile, a (meth)acrylamido sulfonic acid, a (meth)acrylamido sulfonate salt, or a combination thereof; polyethylene particles; and first inorganic particles, and an average particle size (D50) of the first inorganic particles is larger than an average particle size (D50) of the polyethylene particles.

Abstract: An all-solid-state lithium battery is disclosed, including a substrate; and a plurality of layers of lithium battery units stacked on the substrate. Each layer of lithium battery unit of the plurality of layers of lithium battery units includes at least two electrode collector layers, a first electrode layer, an electrolyte layer and a second electrode layer. Two neighboring layers of lithium battery units share one of the electrode collector layers. A method for fabricating an all-solid-state lithium battery is further disclosed.

Abstract: A catalyst support material for a proton exchange membrane fuel cell (PEMFC). The catalyst support material includes a metal material of an at least partially oxidized form of TiNb3O6 reactive with H3O+, HF and/or SO3? to form reaction products in which the metal material of the at least partially oxidized form of TiNb3O6 accounts for a stable molar percentage of the reaction products.

Abstract: A separator for lithium-sulfur batteries and a lithium-sulfur battery including the same. The separator for lithium-sulfur batteries includes a separator substrate, a first coating layer formed on at least one surface of the separator substrate, and a second coating layer formed on the first coating layer. The first coating layer includes a polydopamine, and the second coating layer includes a lithium-substituted water-soluble polymer. Also a method for preparing the separator.

Abstract: The invention relates to lithium ion batteries and, more particularly, to lithium ion conducting composite polymer electrolyte separators. The separators include a nanofiber mat composed of electrospun nanofibers. The nanofibers include a polymer having one or more polar halogen groups, a lithium-containing solid or liquid electrolyte and nanoparticle filler. The polymer, electrolyte and filler are combined to form a solution that is subjected to the electro-spinning process to produce electrospun nanofibers in the form of the mat.

Abstract: A polyolefin porous film is provided, the film comprising a polyethylene-based resin, wherein a weight average molecular weight of the polyethylene-based resin is 450,000 or less, and a content of a high molecular weight component having a molecular weight of 1,000,000 or more in the polyethylene-based resin is 2 to 11% by mass.

Abstract: The present invention relates to an electrode for a lithium secondary battery, which includes an electrode current collector and an electrode active material layer which is formed on one surface of the electrode current collector and includes an electrode active material and an organic binder containing an ethylenically unsaturated group, and a lithium secondary battery including the same.

Abstract: The present invention relates to a solid polymer electrolyte including a porous substrate formed of an inorganic fiber containing an ethylenically unsaturated group, a polymer compound coupled to the inorganic fiber and including a polymer network in which an oligomer containing a (meth)acrylate group is coupled in a three-dimensional structure, and a lithium salt, and to a lithium secondary battery including the same.

Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.

Abstract: A solid electrolyte represented by general formula LiySiRx(MO4), where x is an integer from 1 to 3 inclusive, y=4?x, each R present is independently C1-C3 alkyl or C1-C3 alkoxy, and M is sulfur, selenium, or tellurium. Methods of making the solid electrolyte include combining a phenylsilane and a first acid to yield mixture including benzene and a second acid, and combining at least one of an alkali halide, and alkali amide, and an alkali alkoxide with the second acid to yield a product d represented by general formula LiySiRx(MO4)y. The second acid may be in the form of a liquid or a solid. The phenylsilane includes at least one C1-C3 alkyl substituent or at least one C1-C3 alkoxy substituent, and the first acid includes at least one of sulfuric acid, selenic acid, and telluric acid.

Abstract: The present invention relates to a lithium secondary battery comprising: a current collector comprising a structure in a fabric form in which fiber bundles are cross-woven, wherein each of the fiber bundles is formed of sets of fiber yarns and each of the fiber yarns includes a polymer fiber and a metal layer surrounding the polymer fiber; and an electrode including an active material layer disposed on at least one surface of the current collector.

Abstract: A positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charging and discharging as compared with those of a known positive electrode active material. In order to form the positive electrode active material having the pseudo-spinel crystal structure in the charged state, it is preferable that a halogen source such as a fluorine and a magnesium source be mixed with particles of a composite oxide containing lithium, a transition metal, and oxygen, which is synthesized in advance, and then the mixture be heated at an appropriate temperature for an appropriate time.

Abstract: The present invention provides a polymer electrolyte for a secondary battery, which may secure high ionic conductivity and mechanical strength, and a lithium secondary battery including the same.

Abstract: A solid-state battery cell includes a cathode, an anode, a solid-state electrolyte between the cathode and the anode, and an electrolyte-anode interfacial layer between the solid-state electrolyte and the anode. The electrolyte-anode interfacial layer comprises porous, high surface area carbon and nanostructures formed on an anode-facing surface of the solid-state electrolyte, wherein the nanostructures penetrate the porous, high surface area carbon.

Abstract: A negative electrode for a lithium metal battery which includes: a current collector; a negative electrode active material layer formed on the surface of a current collector; a heat conductive layer formed on a surface of the negative electrode active material layer wherein the heat conductive layer comprises a heat conductive material having a heat conductivity of 25 W/m·K to 500 W/m·K; and a protective layer formed on a surface of the heat conductive layer, wherein the protective layer includes at least one of a porous polymer layer and a ceramic layer. An electrochemical device including the negative electrode for a lithium metal battery. The negative electrode for a lithium metal battery includes a heat conductive layer and a protective layer, and can inhibit growth of lithium dendrite in a negative electrode for a lithium metal battery and improve the cycle life of an electrochemical device.

Abstract: An electrochemical cell includes a fuel electrode, an air electrode containing a perovskite type oxide as a main component, the perovskite type oxide being represented by a general formula ABO3 and containing La and Sr at an A site, and a solid electrolyte layer arranged between the fuel electrode and the air electrode. The air electrode includes a first portion and a second portion, the first portion being located on a side opposite to the solid electrolyte layer, the second portion being located on the solid electrolyte layer side. A first ratio of an La concentration to an Sr concentration detected at the first portion through Auger electron spectroscopy is at least 1.1 times a second ratio of an La concentration to an Sr concentration detected at the second portion through Auger electron spectroscopy.

Abstract: A battery module includes a lower housing and a plurality of battery cells. The plurality of battery cells are electrically coupled together to produce a voltage. The module also includes an assembly disposed over the battery cells and coupled to the lower housing. The assembly may include a lid and a plurality of bus bar interconnects mounted on the lid. The module also includes a printed circuit board (PCB) assembly disposed on and coupled to the assembly. The PCB assembly may include a PCB. The module also includes a cover disposed over and coupled to the lower housing to hermetically seal the battery module. Also disclosed is a method of manufacturing the battery module.

Abstract: A battery safety device is provided, which may be disposed inside a battery, and may include a conductive handle and a temperature-controlled expansion element. The conductive handle may include a connection portion, a left extension portion, a right extension portion, a top extension portion and an actuating sheet. The left extension portion and the right extension portion may be connected to the connection portion and contact the first conductive portion of the polar winding of the battery. The top extension portion may be connected to the connection portion and contact the first electrode terminal of the battery. The actuating sheet may be connected to the connection portion, and there may be an accommodating space between the actuating sheet and the polar winding, and the temperature-controlled expansion element may be disposed in the accommodating space and contact the actuating sheet and the first conductive portion.

Abstract: A cathode in a solid oxide fuel cell containing AgPrCoO3. The operating temperature range of the cathode is from about 400° C. to about 850° C.

Abstract: A solid oxide fuel cell comprising an anode layer, an electrolyte layer, and a two phased cathode layer. The two phased cathode layer comprises praseodymium and gadolinium-doped ceria. Additionally, the solid oxide fuel cell does not contain a barrier layer.