Abstract: A positive electrode sheet and a preparation method therefor, a secondary battery, and an electric device. The negative electrode sheet includes a negative electrode current collector, an active material layer, and a passivation layer, where the active material layer is provided between the negative electrode current collector and the passivation layer; the active material layer includes a negative electrode active material, the passivation layer includes ion resin, and the ion resin includes one or more of carboxymethyl cellulose and a metal salt of carboxymethyl cellulose.

Abstract: A coating roller assembly for coating an electrode plate of a battery, where the coating roller assembly includes: coating rollers; and coating portions, disposed around the coating rollers. The coating portions include a first coating portion, a second coating portion, and a third coating portion, where the first coating portion is configured to form a first coating layer portion, the second coating portion is configured to form a second coating layer portion, and the third coating portion is configured to form a third coating layer portion between the first coating layer portion and the second coating layer portion. A coating method for coating an electrode plate of a battery with the foregoing coating roller assembly, an electrode plate obtained through the coating roller assembly or the coating method, and a battery including the electrode plate.

Abstract: A positive electrode sheet and a preparation method therefor, a secondary battery, and an electric device. The negative electrode sheet includes a negative electrode current collector, an active material layer, and a passivation layer, where the active material layer is provided between the negative electrode current collector and the passivation layer; the active material layer includes a negative electrode active material, the passivation layer includes ion resin, and the ion resin includes one or more of carboxymethyl cellulose and a metal salt of carboxymethyl cellulose.

Abstract: The present disclosure provides a semiconductor structure and a manufacturing method thereof. The manufacturing method includes: providing a substrate; and forming a first metal via structure, where the first metal via structure is provided in the substrate, and a top surface of the first metal via structure is flush with a top surface of the substrate, where the top surface of the first metal via structure is made flush with the top surface of the substrate through at least a first process and a second process.

Abstract: The invention relates to a preparation process of a modified polyamide wax for coatings and a formed coating. The coating includes 0.5-5 parts by weight of modified polyamide wax; the preparation process of the modified polyamide wax for coating includes the following steps: S1, ratio of raw materials:raw materials include water-based polyamide wax, water-based polyurethane, polyoxyethylene monostearate, the first composite modifier, organic amine, organic solvent, the second composite modifier, deionized water; S2, prepare the first complex; S3, add organic amine, organic solvent and the second composite modifier is evenly mixed, and the temperature is raised to 100-120° C. until the water-based polyamide wax is completely dissolved to obtain the first intermediate modifier; S4, deionized water is heated up and slowly added to the first intermediate modifier in the process. The coating system prepared by the invention has good leveling, stability and sag resistance.

Abstract: Provided are a negative electrode plate and a preparation method thereof, a secondary battery, a battery module, a battery pack, and an electric apparatus. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer disposed on at least one surface of the negative electrode current collector, where the negative electrode film layer includes a negative electrode active material layer, a lithium supplement layer, and a polymer layer that are stacked. The negative electrode active material layer is located on the negative electrode current collector, the lithium supplement layer is located on a side of the negative electrode active material layer back away from the negative electrode current collector, and the polymer layer is located on a side of the lithium supplement layer back away from the negative electrode active material layer.

Abstract: Provided are a secondary battery and a preparation method thereof, and an electric device. The secondary battery includes a negative electrode plate and an electrolyte. The negative electrode plate includes a negative active material and a lithium supplement agent, and an insulating material is dissolved in the electrolyte. A mass ratio of the insulating material in the electrolyte ranges from 0.1% to 4%. The insulating material is derived from the negative electrode plate prior to injection the electrolyte, and the insulating material is arranged between the negative active material and the lithium supplement agent in the negative electrode plate prior to the injection the electrolyte.

Abstract: The present disclosure provides a semiconductor structure and a manufacturing method thereof. The manufacturing method includes: providing a substrate; and forming a first metal via structure, where the first metal via structure is provided in the substrate, and a top surface of the first metal via structure is flush with a top surface of the substrate, where the top surface of the first metal via structure is made flush with the top surface of the substrate through at least a first process and a second process.

Abstract: The present invention discloses a silty marine natural gas hydrate gravel stimulation mining method and a mining device. The mining method appropriately relaxes the sand retention accuracy of a wellbore, so that the fine sand and muddy components of the stratum can flow into the wellbore, and after a certain period of production, the coarse gravels are injected into the extra-pipe stratum of the production well to fill the deficit caused by the production of the fine components of the stratum and the hydrates, and then the well is opened for production. The method achieves the triple objectives of improving the productivity of the silty reservoir, preventing the large-area deficit in the stratum and extending the effective period of the sand retention of the wellbore, by way of the alternation of the rounds of the gravel injection and the hydrate reservoir fluid extraction.

Abstract: Embodiments of the present application provide a 3D display apparatus and a method for driving the same. The apparatus includes: a backlight assembly forming bright stripes and dark stripes arranged alternately; a liquid crystal display panel displaying a left eye image of a 3D display signal by a first set of pixel units and display a right eye image by a second set of pixel units; a location tracking unit acquiring a location of a viewer; and a control unit adjusting position of the bright and dark stripes and deflection of liquid crystal of the liquid crystal display panel such that a light emitted from the bright stripes is allowed to pass through corresponding first set to be received by left eye and to pass through corresponding second set to be received by right eye respectively. Embodiments are used in manufacturing of a 3D display apparatus.

Abstract: The present invention discloses a silty marine natural gas hydrate gravel stimulation mining method and a mining device. The mining method appropriately relaxes the sand retention accuracy of a wellbore, so that the fine sand and muddy components of the stratum can flow into the wellbore, and after a certain period of production, the coarse gravels are injected into the extra-pipe stratum of the production well to fill the deficit caused by the production of the fine components of the stratum and the hydrates, and then the well is opened for production. The method achieves the triple objectives of improving the productivity of the silty reservoir, preventing the large-area deficit in the stratum and extending the effective period of the sand retention of the wellbore, by way of the alternation of the rounds of the gravel injection and the hydrate reservoir fluid extraction.

Abstract: This invention provides a flow through type ultraviolet LED disinfecting apparatus, and a top cover and an outer cylindrical body are connected by a thread; a transparent inner cup body has a water holding tank inside for containing water, and there is a water pipe at the top of cover; a depth of the inlet water pipe reaching into the water holding tank has greater efficient than tank without pipe; a pipe mouth at one end of the inlet water pipe reaching into the water holding tank corresponds to a LED disinfecting light; the outer cylindrical body is tube-shaped, a side wall body and a bottom plate; the side wall body is sleeved outside the transparent inner cup body; a bottom of the transparent inner cup body contacts with the bottom plate of the inner cylindrical body; he circuit board with LED disinfecting LED is fixed at the bottom plate.

Abstract: Provided are a flexible display device and a control method thereof. The flexible display device includes: a base substrate; a display component located on the base substrate; a top-layer cover plate, configured to package the display component; a deformation layer, configured to create a deformation to drive the flexible display device to deform; and a control element, located on the base substrate and configured to control a deformation variable of the deformation layer.

Abstract: Embodiments of the present application provide a 3D display apparatus and a method for driving the same. The apparatus includes: a backlight assembly forming bright stripes and dark stripes arranged alternately; a liquid crystal display panel displaying a left eye image of a 3D display signal by a first set of pixel units and display a right eye image by a second set of pixel units; a location tracking unit acquiring a location of a viewer; and a control unit adjusting position of the bright and dark stripes and deflection of liquid crystal of the liquid crystal display panel such that a light emitted from the bright stripes is allowed to pass through corresponding first set to be received by left eye and to pass through corresponding second set to be received by right eye respectively. Embodiments are used in manufacturing of a 3D display apparatus.

Abstract: The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of catalytic hydrogenation, and improving the quality of product. The catalytic activity accelerant is consisted of an alkyl succinimide derivative, an alkyl phenol and a surfactant. The amount of the alkyl succinimide derivative in the accelerant is 5-70 wt. %. The amount of the alkyl phenol in the accelerant is 2-70 wt. %. The amount of the surfactant in the accelerant is 2-70 wt. %.

Abstract: The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of catalytic hydrogenation, and improving the quality of product. The catalytic activity accelerant is consisted of an alkyl succinimide derivative, an alkyl phenol and a surfactant. The amount of the alkyl succinimide derivative in the accelerant is 5-70 wt. %. The amount of the alkyl phenol in the accelerant is 2-70 wt. %. The amount of the surfactant in the accelerant is 2-70 wt.