Abstract: A negative electrode plate includes: a negative electrode current collector, and a negative electrode film layer located on at least one surface of the negative electrode current collector and including first and second negative electrode active material particles. The first negative electrode active material particles includes adsorption holes and have a tap density of 0.4 g/cm3-1.4 g/cm3. The second negative electrode active material particles have a layered structure and a tap density of 0.05 g/cm3-1.5 g/cm3. Based on the total mass of the first and second negative electrode active material particles, a mass percentage of the first negative electrode active material particles is in the range of 70%-95%, and a mass percentage of the second negative electrode active material particles is in the range of 5%-30%. A compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3?PD?1.3 g/cm3.

Abstract: A negative electrode plate includes a negative electrode active material layer. The negative electrode active material layer includes a negative electrode active substance and lithium-philic nanoparticles capable of alloying with lithium. A secondary battery includes a positive electrode plate, the negative electrode plate, and a separator provided between the positive electrode plate and the negative electrode plate.

Abstract: A negative electrode plate includes: a negative electrode current collector, and a negative electrode film layer located on at least one surface of the negative electrode current collector and including first and second negative electrode active material particles. The first negative electrode active material particles includes adsorption holes and have a tap density of 0.4 g/cm3-1.4 g/cm3. The second negative electrode active material particles have a layered structure and a tap density of 0.05 g/cm3-1.5 g/cm3. Based on the total mass of the first and second negative electrode active material particles, a mass percentage of the first negative electrode active material particles is in the range of 70%-95%, and a mass percentage of the second negative electrode active material particles is in the range of 5%-30%. A compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3?PD?1.3 g/cm3.

Abstract: The present application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The negative electrode plate includes: a negative electrode current collector; and a negative electrode film layer which is located on at least one surface of the negative electrode current collector and includes first negative electrode active material particles and second negative electrode active material particles, the first negative electrode active material particles including a plurality of adsorption holes and having a tap density of 0.4 g/cm3-1.4 g/cm3, wherein a difference d in median particle size between the first negative electrode active material particles and the second negative electrode active material particles satisfies: 3 ?m?d?19 ?m, and a compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3?PD?1.4 g/cm3.

Abstract: This application relates to a negative electrode plate including a negative electrode current collector and a negative electrode film layer on at least one surface of the negative electrode current collector, where the negative electrode film layer includes a fluoropolymer, the fluoropolymer includes at least one of a polymer of a monomer in formula 1 and a copolymer of a monomer in formula 1 and a monomer in formula 2, and the fluoropolymer is present in the negative electrode film layer in form of spherical particles. This application further relates to a preparation method of negative electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus.

Abstract: A method for preparing a phenoxycarboxylate includes 1) allowing a salt of a phenolic compound and a halogenated carboxylate to subject to a condensation reaction in a polar solvent under the action of a catalyst; and 2) adding an acid-containing organic solvent to the condensation reaction liquid in step 1) to perform an acidification, and purifying the precipitated halogenated inorganic salt to obtain a phenoxycarboxylate. A catalyst is added in the condensation process, which can improve the reaction rate, achieve the reaction at room temperature and high material conversion rate, and avoid the problem in the prior art that the reaction needs to be performed at high temperature, about 120° C. After the condensation reaction is completed, the salt is removed by dry filtration (an anhydrous condition) by adding a methanol hydrogen chloride solution. There is no industrial wastewater, raw materials are easily recycled, and the reaction yield is high.

Abstract: An anode plate includes a current collector and an anode active material layer. The anode active material layer is disposed on at least one surface of the current collector. The anode active material layer includes a fluoropolymer and a carbon nanotube; the fluoropolymer is dispersed in the anode active material layer; and the carbon nanotube is wrapped around the fluoropolymer and an anode active material in the anode active material layer.

Abstract: A positive electrode slurry contains polyether polyol, where the polyether polyol has the following constitutional formula: where R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and Y are as defined in the specification.

Abstract: The present disclosure provides a positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula: where R1, R2, R3, R4, R5, and R6 are as defined in the specification.

Abstract: The present application relates to a styrene-acrylic emulsion and a preparation method therefor, an anode plate, a secondary battery and an electric device. A Dv50 particle size of a latex particle in the styrene-acrylic emulsion is 350-900 nm, optionally 350-800 nm. The anode plate includes an anode current collector; and an anode active material layer disposed on at least one surface of the anode current collector, the anode active material layer includes a hard carbon material and a binder, the binder is derived from the above-mentioned styrene-acrylic emulsion.

Abstract: An electrolyte, a secondary battery, a battery, and an electrical device are described. The electrolyte comprises a C2-C4 alkene substituted with a halogen atom and/or a partially halogenated saturated polyalkene. By adding the C2-C4 alkene substituted with a halogen atom and/or the partially halogenated saturated polyalkene to the electrolyte, an electrochemical reduction reaction may produce on a surface of a negative electrode active material to generate a solid electrolyte interphase; so as to improve a low temperature performance and service life.

Abstract: The present disclosure provides a positive electrode slurry comprising a polyether siloxane, wherein the polyether siloxane may comprise at least the following structural units: wherein D is methyl or ethyl; A is hydrogen, halogen or haloalkyl; B is hydroxyl, R, OR, or ROR?, wherein the R and R? are each independently a linear or branched alkyl group containing 1 to 8 carbons; and E is phenyl, alkyl-substituted phenyl, ether-substituted phenyl, or halophenyl.

Abstract: A positive electrode slurry contains polyether polyol, where the polyether polyol has the following constitutional formula: where R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and Y are as defined in the specification.

Abstract: The present disclosure provides a positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula: where R1, R2, R3, R4, R5, and R6 are as defined in the specification.

Abstract: A positive electrode slurry containing polyether polyol, where the polyether polyol has the following constitutional formula: where n1, n2, n3, R1, R2, R3, R4, R5, R6, B1, and B2 are as defined in the specification are described. The addition of the polyether polyol described in this application can increase a coating weight of positive electrode plates, thereby increasing energy density of batteries.

Abstract: A positive electrode slurry includes a lithium-containing phosphate material, a first positive electrode additive, a second positive electrode additive, and a binder. The first positive electrode additive includes at least one of a compound represented by structural formula 1 or a compound represented by structural formula 2 below. R1 is selected from C2-C4 alkylene, alkenylene, and derivatives thereof, substituted or unsubstituted by halogen. R2 and R3 are each independently alkyl, alkenyl, alkynyl, or aryl, substituted or unsubstituted by halogen. The binder includes a polymer including a repeating unit represented by structural formula 3 below. A pH value of the second positive electrode additive is greater than or equal to 10.0.

Abstract: A 5A5B6C tricyclic spironolactone derivative is provided with a formula XI: The present invention also relates to its preparation method and its applications in the areas of insecticide, nematicide, fungicide and anti-viral agent. The 5A5B6C tricyclic spironolactone derivatives in the present invention are high-performance, broad-spectrum, low-toxicity and low-ecological risk compounds with a wide range of applications in the areas of agriculture, horticulture, forestry and health.

Abstract: Provided is a positive electrode slurry comprising a polyether phosphate, wherein the polyether phosphate may comprise at least the following structural units: and a structural unit (IV) that is a phosphate group, A being hydrogen, halogen or haloalkyl; B is hydroxyl, R, OR, or ROR?, the R and R? being each independently a linear or branched alkyl group containing 1 to 8 carbons; and E is phenyl, alkyl-substituted phenyl, ether-substituted phenyl, or halophenyl.

Abstract: An electronic tokening system implemented by a data source transmits secure electronic tokens including time-based values to a plurality of terminals. The terminals may be geographically disparate, and the different terminals may have different connection speeds to the data source. The terminals may use the secure electronic tokens to consistently and reliable calculate data values.

Abstract: A secondary battery includes a positive electrode sheet which includes a positive-electrode current collector, a positive-electrode active material layer, and a coating layer arranged between the positive-electrode current collector and the positive-electrode active material layer. The coating layer includes a conductive agent and a copolymer.