4results 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.

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.