Abstract: A separator, a preparation method, a secondary battery, and an electric device. The separator includes a first porous base film, where the first porous base film is polyolefin, and a viscosity-average molecular weight of the first porous base film is greater than or equal to 1,200,000 g/mol, such that the separator has higher puncture strength; a degree of branching of the first porous base film is less than or equal to 5%.

Abstract: A separator and a preparation method of separator, a battery cell including the separator, a battery including the battery cell, and an electric device including the battery, where the separator includes at least two base films and a functional layer interposed between two adjacent base films, and the base film includes at least two components.

Abstract: A method, an apparatus, a device and a storage medium for message processing are provided. The method includes: obtaining, from a target interaction channel of a plurality of interaction channels, a first interaction message from a user in a chat between the user and a digital assistant; converting, based on a target data structure corresponding to the target interaction channel, the first interaction message into a second interaction message with a predetermined data structure; and performing, based on the second interaction message, a task indicated by the first interaction message.

Abstract: An IGZO thin-film transistor and a method for manufacturing same. The method includes: acquiring a substrate; forming an IGZO layer on the substrate by a solution process; doping V impurities on a surface of the IGZO layer by a spin doping process; forming a source electrode at one side of the IGZO layer, and forming a drain electrode at the other side; forming a gate dielectric layer on the doped IGZO layer; and forming a gate electrode on the gate dielectric layer.

Abstract: The present disclosure discloses a preparation method of an organosilica/ceramic composite membrane with a gradient pore structure. The preparation method comprises: (1) selecting a porous ceramic material as a membrane support layer; (2) gradually replacing a solvent with water to prepare zirconium colloidal sols with different particle sizes, and successively coating the prepared zirconium colloidal sols onto a ceramic support from large to small so as to form a membrane transition layer with a gradient pore structure; and (3) catalytically synthesizing an organosilica polymeric sol using hydrochloric acid, coating the prepared organosilica sol onto the preheated transition layer through ultrasonic thermal spraying to undergo heat treatment, so as to prepare the organosilica/ceramic composite membrane with the gradient pore structure. According to the present disclosure, the transition layer with the gradient pore structure is prepared by using the zirconium colloidal sols with different particle sizes.

Abstract: Embodiments of this application provide an electrode assembly, a manufacturing method and manufacturing system of same, a battery cell, and a battery. The electrode assembly includes a negative electrode plate and a positive electrode plate, where the negative electrode plate and the positive electrode plate are wound in a winding direction to form a winding structure, and the winding structure includes a bending zone. The negative electrode plate and the positive electrode plate each include a plurality of bending portions located in the bending zone.

Abstract: A separator and a preparation method therefor, an electrode assembly, a secondary battery, a battery module, a battery pack and an electrical apparatus are disclosed. The separator comprises: a first microporous base membrane, a second microporous base membrane, and a coating disposed between the first microporous base membrane and the second microporous base membrane, wherein the coating comprises lithium-rich particles, and the ratio of the average particle size Dv50 of the lithium-rich particles to the thickness of the coating is 1:(1-15).

Abstract: Embodiments of the present application provide an isolation film, a preparation method therefor, and a secondary battery and an electric apparatus related thereto. The isolation film comprises a first porous base film, a second porous base film, and a coating layer. The coating layer is arranged between the first porous base film and the second porous base film. The coating layer comprises first particles. The first particles comprise at least one of molybdenum disulfide, silicon oxide, a transition metal oxide, or conductive carbon particles.

Abstract: The present application relates to the field of batteries, and discloses a battery separator and a manufacturing method therefor, a secondary battery, and an electric device. The battery separator comprises a base membrane and a coating provided on the surface of the base membrane. The material of the coating comprises a magnetic heavy metal ion adsorbent. The saturated adsorption capacity of the magnetic heavy metal ion adsorbent is 30-300 mg/g. According to the present application, by adding the magnetic heavy metal ion adsorbent into the coating of the battery separator, the coating capable of adsorbing heavy metal ions is arranged on the battery separator, so that the battery separator is modified, and the modified battery separator has a heavy metal adsorption function and can effectively adsorb heavy metal ion impurities.

Abstract: Disclosed in the present application are a diaphragm and a manufacturing method therefor, and an electrode assembly, a battery cell, a battery and an electric device. The diaphragm comprises at least two layers of base membranes and at least one functional layer, wherein the functional layer is arranged between two adjacent base membranes, and the functional layer comprises a piezoelectric material. In the technical solution of the present application, the conductivity is increased, and the strength of the diaphragm is also improved by fixing the position of a piezoelectric material by means of two base layers of membranes and by means of the adhesion of a functional layer, which is sandwiched between the base membranes.

Abstract: Disclosed are a battery separator and a preparation method therefor, as well as a secondary battery and an electric device, relating to the field of batteries. The battery separator includes a base film and a coating, wherein the coating is disposed on a surface of the base film that faces the cathode of a battery. The coating comprises both a conductive material and an insulating material. When applied in a lithium battery, the separator functions such that, if lithium dendrites grow through the uncoated side of the base film, the coating intercepts the dendrites before they make direct contact with the cathode. This structure prevents a direct short circuit between the anode and cathode. Instead, a low-current micro-short circuit is formed through the coating, which effectively delays the onset of serious failure or thermal events. As a result, the separator improves the safety and operational reliability of the lithium battery.

Abstract: A solid-state battery cell assembly is provided with a base membrane between a positive electrode and a solid-state electrolyte layer and/or between a negative electrode and the solid-state electrolyte layer that are included therein. An electrolyte solution is adsorbed onto the base membrane. The base membrane included in the solid-state battery cell assembly can effectively reduce the direct contact of the contained electrolyte solution with the electrodes and the solid-state electrolyte layer, which can reduce the consumption of the electrolyte solution in the charge and discharge processes, and meanwhile, also can reduce the absorption of the electrolyte solution by the solid-state electrolyte layer.

Abstract: A composite separator comprises at least one base film layer and a self-healing functional layer laminated on a surface of the base film layer, wherein the self-healing functional layer contains a thermally cyclopolymerizable precursor material, and/or after the self-healing functional layer has self-healed, the precursor material forms a crosslinked polymer structure. The surface of the base film layer of the composite separator of the present application is provided with a self-healing functional layer, and the composite separator functions to isolate the positive electrode plate from the negative electrode plate and conduct lithium ions while blocking electrons when the secondary battery is under normal working conditions. When overheating or thermal runaway occurs inside the secondary battery, the precursor material in the self-healing functional layer undergoes a thermal polymerization reaction to generate a high-temperature-resistant and high-mechanical-strength crosslinked polymer.

Abstract: A separator film comprises a polymer base film and an organic binder dispersed in the polymer base film, and the tail end of the molecular chain of part of the organic binder is exposed out of the surface of the polymer base film. According to the present application, an organic binder is dispersed in a polymer base film material to form a self-adhesive separator film, and the mechanical strength of the polymer base film can be enhanced by using the binding property of the organic binder in the polymer base film material, thereby improving the overall heat resistance and stability of the separator film; additionally, when the organic binder is dispersed in the polymer base film material, the separator film has a smaller thickness than when the organic binder is sprayed on the surface.

Abstract: A separator film comprises a plurality of layers of microporous films, wherein an intermediate layer is provided between at least two layers of microporous films arranged to be adjacent to each other, and the intermediate layer includes a ferroelectric. In the solution of the present application, the separator film is configured to comprise a plurality of layers of microporous films, and an intermediate layer including a ferroelectric is provided between at least two layers of microporous films arranged to be adjacent to each other. Since the ferroelectric has a spontaneously polarized built-in electric field, which is equivalent to establishing an ion accelerator on an intermediate layer of the separator film, ions are accelerated under the action of the electric field when passing through the intermediate layer of the separator film.

Abstract: A composite separator comprises a plurality of laminated base film layers and at least one modified layer arranged between two adjacent base film layers, wherein the raw material components of the modified layer include a fullerene material. In the present application, using the fullerene material as the modified layer between two adjacent base film layers not only can improve the ion and electron conductivity of fullerene, but also can improve the porosity of fullerene, and improve the characteristics, such as liquid absorption capacity, wettability, air permeability and adhesion performance, of fullerene.

Abstract: Provided in the present application are a separator and a preparation method therefor, a secondary battery, and an electric apparatus. The separator comprises a first base film, a second base film, and an intermediate layer, which is located between the first base film and the second base film, wherein the melting point of the first base film is 175° C. or above, and the average pore size of the first base film is larger than or equal to 0.22 ?m; and the intermediate layer comprises filler particles, at least some of which are embedded into the first base film.

Abstract: A separator is provided, comprising a first porous base film, a second porous base film, and a porous coating positioned between the first and second porous base films. The porous coating includes a binder and filler particles. At least a portion of the filler particles is embedded into the first porous base film and/or the second porous base film to a depth of at least 1 ?m. The binder facilitates adhesion between the porous coating and the base films. The embedding of filler particles enhances the bonding strength between the porous coating and the base films, which in turn improves the separator's thermal stability and resistance to nail penetration. These improvements contribute to enhanced safety and reliability of the battery incorporating the separator.

Abstract: A separator, including a base film and a coating layer disposed on at least one side surface of the base film; where the coating layer includes a color-developing agent, and the color-developing agent is capable of developing color when exposed to excitation light are described. Adding the color-developing agent to the coating layer of the separator can develop the color of the separator, making it easy to detect whether there are defects in the coating layer, such as omitted coating, uneven coating, and pinholes.

Abstract: Provided are a set and a display device. The set includes a display module including a display panel, a module mold frame, a front housing and a backplane. At least part of front housing is located on a light-emitting side of display panel and is disposed opposite to at least one side edge of module mold frame; front housing is provided with first and second connecting structures, the module mold frame has a first module mold frame side edge where a third connecting structure is disposed, the backplane of display module is provided with a fourth connecting structure. First and third connecting structures cooperate to limit the position of front housing in a plane parallel to a light-emitting surface of display module; second and fourth connecting structures cooperate to limit the position of front housing in a direction perpendicular to light-emitting surface.