6results about How to "Efficient mass production" patented technology

This invention discloses a positive-film all-silicon nitride passivated TOPCon solar cell and its fabrication method, belonging to the field of solar cell technology. The cell includes a back metal electrode, a back silicon nitride passivation layer, an n-type monocrystalline silicon substrate, a silicon dioxide tunneling oxide layer, and an n-type monocrystalline silicon substrate stacked sequentially from bottom to top. + A heavily doped polycrystalline silicon layer, a positive silicon nitride passivation antireflection layer, and a front surface selective electrode; this application uses a positive silicon nitride passivation antireflection layer instead of the traditional Al2O3 / SiN. x The stacked layers achieve strong field-effect passivation through high fixed negative charge, reducing dangling bonds on the silicon surface and lowering the surface recombination rate; the positive silicon nitride passivation antireflection layer is SiN. x Dense films can reduce interface defects, allowing the dark saturation current density of the battery to drop to 10–15 fA / cm². 2 the following.

The application provides an acoustic material, a manufacturing method thereof, a loudspeaker and electronic equipment, wherein the acoustic material is formed by interweaving hydrophilic fibers with each other, has a three-dimensional network structure inside, and has porous powder materials attached to the surfaces of the hydrophilic fibers through a precipitation aid, the hydrophilic fibers include hydrophilic natural fibers and / or hydrophilic modified chemical synthetic fibers. The acoustic material has high efficient acoustic performance, and the acoustic performance of the porous powder material with the acoustic enhancement function per unit mass is better than that of commonly used acoustic enhancement particles on the market. The acoustic material also has stable acoustic performance, and after high-temperature and high-humidity storage according to the technical content recorded in 7.8.4 of the group standard 'Porous sound-absorbing particles for micro loudspeakers' (standard number: T / CECA 78-2022), the acoustic performance of the acoustic material has no loss.

This disclosure relates to a method for preparing N-(fluorosulfonyl)dimethylamine, the method comprising the following steps: (1) adding SO2Cl2 and Me2NH to a reactor, and reacting fully to obtain an intermediate product ClSO2NMe2; (2) adding a fluorine source to the intermediate product ClSO2NMe2 obtained in step (1), and reacting fully to obtain a reaction product containing N-(fluorosulfonyl)dimethylamine; and (3) separating N-(fluorosulfonyl)dimethylamine from the reaction product obtained in step (2). This method improves production efficiency and product yield, effectively controls the reaction process, and reduces reaction costs.

This invention discloses a composite ultrathin lithium foil, its preparation method, and its applications. It is formed by combining high-oxidation-degree graphene, carbon nanotubes, and molten lithium metal, followed by cooling and rolling. The oxygen-containing functional groups on the graphene react with lithium to form lithiophilic sites. The carbon nanotubes are treated with silicon and zinc acetate to enhance their lithiophilicity, allowing them to be uniformly dispersed in the molten lithium. After cooling, the composite ultrathin lithium foil is rolled using a roller mill. The composite ultrathin lithium foil provided by this invention has high tensile strength and Young's modulus due to the network structure formed by graphene and carbon nanotubes, facilitating large-scale processing and application. Coating it onto the surface of the negative electrode of a lithium-ion battery can pre-lithiate the electrode material, thereby effectively improving the initial coulombic efficiency of the lithium-ion battery. The capacity corresponding to the lithium foil can be controlled by changing the content of graphene and carbon nanotubes to achieve precise pre-lithiation, further improving the performance of lithium-ion batteries to meet the requirements of energy storage applications.

The utility model discloses a novel plastic clamping seat which comprises a clamping seat main body, an end plate and a group of side clamping parts which are integrated, the clamping seat main body and the end plate are connected through the group of side clamping parts, and the outer sides of the side clamping parts are provided with positioning clamps used for being clamped on automobile parts for fixing. The end plate and the clamping base body are provided with corresponding fixing holes used for being matched with a bolt structure. The novel plastic clamping seat is reasonable in structural design, the clamping seat is completely made of plastic parts, does not comprise metal parts, can be formed through integral injection molding, and is simple and convenient in forming process, efficient in batch production and relatively low in cost; during assembly and fixation, the side clamping parts deform and expand outwards, and fixation is more reliable.

The application relates to a three-axis gyroscope, in particular to a novel three-axis silicon micro gyroscope. The application solves the problems of low measuring precision and high production cost of the existing three-axis gyroscope. The novel three-axis silicon micro gyroscope comprises a glass substrate, a resonator part and an electrode part; the resonator part comprises a cylindrical center anchor point, four groups of square anchor points A and four square anchor points B; the cylindrical center anchor point, the four groups of square anchor points A and the four square anchor points B are all bonded to the upper surface of the glass substrate; the electrode part comprises four pairs of arc-shaped electrodes A, four arc-shaped electrodes B, four pairs of arc-shaped electrodes C, four arc-shaped electrodes D and four rectangular electrodes; the four pairs of arc-shaped electrodes A, the four arc-shaped electrodes B, the four pairs of arc-shaped electrodes C and the four arc-shaped electrodes D are all bonded to the upper surface of the glass substrate; and the four rectangular electrodes are all sputtered on the upper surface of the glass substrate. The application is suitable for high-precision and high-tech fields such as military navigation and deep space exploration.