Abstract: The present disclosure relates to the technical field of batteries, and specifically relates to a polyamine composite material and a preparation method therefor, a slurry, a separator, an electrode sheet, and a lithium-sulfur battery containing the same. The polyamine composite material comprises a carboxylated carbon-based material serving as a substrate and a polyamine serving as an outer surface layer, and the polyamine is uniformly and smoothly coated on the outer side surface and/or the inner pore surface of the carboxylated carbon-based material. The material is rich in amino groups and is uniform and stable, can be used in the lithium-sulfur battery, and can effectively adsorb lithium polysulfide during a long cycle process.

Abstract: Provided is a method for preparing a battery separator coating material, the method comprising: dissolving PVDF and a covalent organic backbone material in an organic solvent and stirring same until uniform. The mass ratio of the PVDF to the covalent organic backbone material to N-methylpyrrolidone is 20: (70-85):(5-10). When the material is applied to preparation of a lithium ion battery separator, the problem of metal dissolution when a transition metal oxide is used as a positive electrode material can be effectively solved. The prepared separator can effectively adsorb metal ions and prevent the metal ions from being deposited on a negative electrode during charging and discharging processes, such that the cycle performance of a transition metal oxide positive electrode material is improved.

Abstract: The disclosure relates to a method and device for acquiring a fingerprint template. The method includes acquiring a piece of fingerprint information of a user through a fingerprint sensor, wherein the piece of fingerprint information is one of a plurality of pieces of fingerprint information of the user; acquiring a quality parameter from the piece of fingerprint information, wherein the quality parameter represents a quality of the piece of fingerprint information; determining whether the quality parameter meets a preset condition; when the quality parameter is determined to meet the preset condition, designating the piece of fingerprint information as a piece of target fingerprint information, wherein the preset condition specifies quality parameter requirements of fingerprint information; and incorporating the piece of target fingerprint information into the fingerprint template.

Abstract: A sound recording method and device are provided in the field of multimedia processing. The method is applied in a mobile terminal including three microphones, including: acquiring three channels of sound signals collected by the three microphones; calculating a central channel signal, a left channel signal, a right channel signal, a rear left channel signal and a rear right channel signal in a multi-channel surround audio system according to the three channels of sound signals; calculating a bass channel signal in the multi-channel surround audio system according to the three channels of sound signals; and combining the above signals to obtain a sound signal of the multi-channel surround audio system.

Abstract: An interface display method, apparatus, and storage medium are provided. The interface display method includes: receiving a first sliding signal acting on a user interface; translating and displaying an interface content in the user interface according to the first sliding signal; and when the interface content is translated to a scrolling area at an edge of the user interface, displaying the interface content in the scrolling area in a scrolling manner, the scrolling manner being a display manner in which the interface content is projected on a plane of the scrolling area when the interface content scrolls and retracts along a scrolling path in a three dimensional space.

Abstract: A sound recording method and device are provided in the field of multimedia processing. The method is applied in a mobile terminal including three microphones, including: acquiring three channels of sound signals collected by the three microphones; calculating a central channel signal, a left channel signal, a right channel signal, a rear left channel signal and a rear right channel signal in a multi-channel surround audio system according to the three channels of sound signals; calculating a bass channel signal in the multi-channel surround audio system according to the three channels of sound signals; and combining the above signals to obtain a sound signal of the multi-channel surround audio system.

Abstract: The disclosure relates to a method, mobile terminal, and non-transitory computer-readable storage medium for controlling a mobile terminal. Aspects of the disclosure provide a method that includes detecting, via a touch sensor, a touch input of an operating body on a side portion of the mobile terminal, determining a touch position and a touch manner of the touch input, determining a control event based on the touch position and the touch manner, and controlling the mobile terminal according to the control event.