Abstract: A resin composition includes a main polymer and a crosslinking agent. The crosslinking agent is represented by Formula (A). Ar1 is an aromatic group containing 6 to 50 ring atoms, each L1 is independently selected from one or more of a single bond, a C1 to C50 alkylene, or a dynamic covalent bond group, and each n1 is independently selected from integers from 1 to 3. A structural unit of the main polymer contains a structure represented by Formula (1). The main polymer contains no aromatic group.

Abstract: A membrane preparation apparatus includes a mixing mechanism, a first feeding mechanism, a second feeding mechanism and an extrusion die head, wherein the first feeding mechanism is used for adding, into the mixing mechanism, a powder mixture containing powder and a first binder; the second feeding mechanism is used for adding, into the mixing mechanism, a solution dissolved with a second binder; the mixing mechanism is used for mixing the powder mixture with the solution; and the extrusion die head is connected to a discharge end of the mixing mechanism and is used for forming a membrane in an extrusion molding mode.

Abstract: A positive electrode material, and a secondary battery, battery module, battery pack, and electric apparatus including the same are disclosed. The positive electrode material includes an active substance and a binder, and the binder has the following formula: The fluorine-free binder in the positive electrode material not only has good flexibility and cohesiveness but also good NMP solubility and thus is a good substitute for PVDF.

Abstract: This application relates to an electrode plate structure. With a ratio CB1 of a surface loading of a second cathode material layer to a surface loading of a first anode material layer controlled to be 1:(1.01-1.3) and a ratio CB2 of a surface loading of a first cathode material layer to a surface loading of a second anode material layer controlled to be 1:(1.03-1.4), the surface loadings of the first anode material layer and second anode material layer are slightly higher than the surface loadings of the corresponding second cathode material layer and first cathode material layer, so that during cycling, especially at a high rate, the first anode material layer and the second anode material layer can provide sufficient lithiation capacity, avoiding lithium precipitation on the anode. This application also implements a differential design for the material layers on two sides of the electrode plates.

Abstract: A resin composition includes a main polymer and a crosslinking agent. The crosslinking agent is represented by Formula (A). Ar1 is an aromatic group containing 6 to 50 ring atoms, each L1 is independently selected from one or more of a single bond, a C1 to C50 alkylene, or a dynamic covalent bond group, and each n1 is independently selected from integers from 1 to 3. A structural unit of the main polymer contains a structure represented by Formula (1). The main polymer contains no aromatic group.

Abstract: A system and method for testing two-phase liquid cooling are disclosed. The system may include, a liquid storage tank; a power pump having an inlet in communication with an outlet of the liquid storage tank; a regenerator having a first loop and a second loop and a first regulating valve; a preheater and a second regulating valve; a liquid outlet port and a liquid outlet valve; a liquid inlet port and a liquid inlet valve; and a condenser having an inlet in communication with an outlet of the second loop.

Abstract: Provided are a secondary battery including an electrode sheet, the electrode sheet including: a current collector and an active material layer; the active material layer is provided on at least one surface of the current collector; the active material layer is divided into a first region and a second region in its thickness direction; the first region is located in a direction close to the surface of the current collector, the thickness of the first region accounts for ½ of the thickness of the active material layer, the binder content in the first region is denoted as A; the second region is located in a direction away from the surface of the current collector, the thickness of the second region accounts for ½ of the thickness of the active material layer, and the binder content in the second region is denoted as B; the electrode sheet satisfies: 1<B/A?1.04.

Abstract: A secondary battery is disclosed. The secondary battery includes a first binder and a second binder, the first binder includes at least one of polyvinylidene fluoride, rubber, epoxy resin, polyurethane, and acrylate, and the second binder includes at least one of polytetrafluoroethylene, polyimide, polypropylene, polyethylene, ethylene vinyl acetate copolymer, and styrene-ethylene-butylene-styrene block copolymer.

Abstract: A pump-driven two-phase liquid cooling system, and a liquid supplementation control method for a pump-driven two-phase liquid cooling system are disclosed. The pump-driven two-phase liquid cooling system may include a pump-driven two-phase liquid circulation loop, where a pump, an evaporator, and a condenser are sequentially arranged in the pump-driven two-phase liquid circulation loop; a first liquid storage tank arranged at a front end of the pump; and a second liquid storage tank in fluid communication with the first liquid storage tank through a first connecting pipeline; where the second liquid storage tank is provided with a first liquid filling port, and the first connecting pipeline is provided with a first valve configured to isolate the second liquid storage tank from the first liquid storage tank.

Abstract: A drying apparatus for drying a material belt includes at least one material-belt turning mechanism, used for changing a travel direction of the material belt, and including a first passing roller, a turning roller, and a second passing roller sequentially arranged in the travel direction of the material belt. The turning roller is configured to move in a first direction relative to the first passing roller and the second passing roller to adjust a wrap angle of the material belt on the turning roller, the first direction perpendicular to an axial direction of the turning roller.

Abstract: Embodiments of the present disclosure provide are an extrusion coating apparatus and a battery production system. The extrusion coating apparatus includes: a first die head and a second die head connected to each other in a snap-fit manner; a flow channel formed between the first die head and the second die head, the flow channel including a feeding inlet and a discharging outlet; and at least one gasket disposed between the first die head and the second die head. The at least one gasket is disposed at two sides of the flow channel in a direction from the feeding inlet to the discharging outlet. During production, sizes of the gasket may be adjusted based on a change in speed distribution at the discharging outlet, thereby adjusting the sizes of the flow channel. By adjusting the flow channel, extrusion speed distribution is further regulated to accommodate slurries with different viscosities.

Abstract: Embodiments of the present disclosure relate to a content processing method and apparatus, a computer-readable storage medium, and a computer device. The method includes obtaining data of a to-be-pushed user in behavior evaluation dimensions, user portrait information of the to-be-pushed user, and to-be-pushed content, with the user portrait information corresponding to a user portrait code and the to-be-pushed content corresponding to a to-be-pushed content code. The method further includes determining a user behavior code based on the data of the to-be-pushed user in the behavior evaluation dimensions, and obtaining a target code by fusing the to-be-pushed content code with the user behavior code and the user portrait code. Then, the method includes determining a recommendation probability of the to-be-pushed content based on the target code to determine the push content based on the recommendation probability.

Abstract: Provided are an apparatus, process, and roller for forming electrode plate. The apparatus for forming electrode plate includes a first roller and a second roller. An inner cavity of a cylinder of the first roller is provided with a gas outlet structure, the gas outlet structure is connected to a gas supply apparatus, and surface of the cylinder of the first roller is provided with a circumferentially distributed cylinder gas discharge structure. The second roller is disposed opposite the first roller, and a gap is provided between the first roller and the second roller for rolling an electrode material into an electrode film.

Abstract: This application provides a content recommendation method and apparatus, an electronic device, and a storage medium.

Abstract: Disclosed are a heat dissipation apparatus and an electronic device. The heat dissipation apparatus may include: a cooling component, comprising at least two cooling plates in which a flow channel for containing a working medium is arranged; and a first tube, through which the cooling plates are connected, allowing the flow channels of the cooling plates to be communicated with each other, at least part of the first tube being an extendable corrugated tube.

Abstract: Embodiments of the present application provide a negative electrode plate, a secondary battery, a battery module, a battery pack and an electrical device. The negative electrode plate may comprise a negative electrode current collector; and a negative electrode active material layer, wherein the negative electrode active material layer may be disposed on at least one surface of the negative electrode current collector, and comprise, based on total weight of the negative electrode active material layer, 90.0% to 98.6% by weight of a negative electrode active material; 1.0%-5.0% by weight of a polymer binder; and 0.2%-4.0% by weight of a toughening fiber.

Abstract: Carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use A carbon nanoparticle-porous skeleton composite material, its composite with lithium metal, and their preparation methods and use. In the carbon nanoparticle-porous skeleton composite material, the porous skeleton is a carbon-based porous microsphere material with a diameter of 1 to 100 ?m or a porous metal material having internal pores with a micrometer-scale pore size distribution, and the carbon nanoparticles are distributed in pores and on the surface of the carbon-based porous microsphere material or the porous metal material. The carbon nanoparticle-porous skeleton composite material is mixed with a molten lithium metal to form a lithium-carbon nanoparticle-porous skeleton composite material.

Abstract: The present invention relates to an organic electroluminescent material and organic electroluminescent device thereof. The organic electroluminescent material has the structural formula as shown in formula 1. Compared with a monoamine structure containing an adamantyl group, the diamine structure disclosed in the present invention has higher HOMO energy level and hole mobility, and can exhibit higher efficiency and service life than a monoamine material device. The organic electroluminescent device comprising the organic electroluminescent material has lower driving voltage, and higher luminous efficiency and service life.

Abstract: Disclosed are a metallic lithium-skeleton carbon composite material having a hydrophobic cladding layer, a preparation method thereof, an electrode, an electrochemical energy storage device containing the metallic lithium-skeleton carbon composite material, and a method for protecting a material containing a water- and oxygen-sensitive active metal. The metallic lithium-skeleton carbon composite material having a hydrophobic cladding layer comprises: a metallic lithium-skeleton carbon composite material comprising a porous carbonaceous support and metallic lithium at least distributed in pores of the porous carbonaceous support; and a hydrophobic cladding layer covering at least the metallic lithium in the metallic lithium-skeleton carbon composite material.

Abstract: The present invention related to an organic electroluminescent material and organic electroluminescent device thereof. The organic electroluminescent material has the structural formula as shown in formula 1. Compared with a monoamine structure containing an adamantyl group, the diamine structure disclosed in the present invention has higher HOMO energy level and hole mobility, and can exhibit higher efficiency and service life than a monoamine material device. The organic electroluminescent device comprising the organic electroluminescent material has lower driving voltage, and higher luminous efficiency and service life.