5results about How to "Large loading capacity" patented technology

The embodiment of the invention relates to a solar cell, a preparation method thereof and a photovoltaic module. The preparation method of the solar cell comprises the following steps: providing a semiconductor substrate; forming a tunneling layer on the surface of the semiconductor substrate; sequentially forming an undoped initial intrinsic material layer and a doping layer containing a dopant on the surface of the tunneling layer; the dopant comprises any one of an N-type dopant and a P-type dopant; and performing heat treatment on the initial intrinsic material layer and the doped layer, so that the dopant in the doped layer is diffused to the initial intrinsic material layer, and the initial intrinsic material layer is at least partially crystallized, so that the initial intrinsic material layer is converted into a doped passivation layer.

The utility model discloses a top illumination reactor, including outer tube structure, the outer tube structure includes outer tube body, and the upper end side of outer tube body is connected with the air inlet pipe, and the upper and lower both ends of outer tube body are connected with upper butt joint and lower butt joint respectively, the light guide column is arranged in the inside of outer tube body, the diameter of light guide column is less than the cavity diameter of outer tube body, and the lower end of light guide column is provided with hopper, the utility model belongs to photocatalysis technical field, and the utility model discloses the purpose at in the existing technology two sides circular light window place poor tightness and the characterization test of being not conducive to catalyst recovery after, and the uneven distribution of liquid film will also influence the mass transfer efficiency problem. The technical effect for reaching is: through optimizing the illumination conduction and catalyst contact structure, the photocatalytic reaction efficiency is improved significantly, adopts the top illumination design cooperation with light block and conical structure, can disperse the light source into uniform large area illumination, ensures the light uniformity of catalyst bed layer.

The application discloses a kind of wing-body fusion layout unmanned aerial vehicle's aerodynamic shape, it is related to low-altitude economic unmanned aerial vehicle high lift-drag ratio flight technical field, including wing-body part, the rear end of the upper surface of wing-body part is equipped with V-tail, engine is installed between the opposite surface of V-tail, the wing-body part with the V-tail is equipped with control surface part on;The lower surface of wing-body part is equipped with landing gear;The wing-body part includes inner wing and outer wing, the inner wing with the outer wing is symmetrically arranged, the edge of outer wing is equipped with wing tip;The leading edge sweep angle of wing-body part is 20 °, the trailing edge sweep angle of wing-body part is 17 °.The application discloses a kind of wing-body fusion layout unmanned aerial vehicle's aerodynamic shape, has better aerodynamic performance, stronger carrying capacity and lower noise;Appearance is simple, and cruise efficiency is high, suitable for engineering practical application.

The application relates to a sodium-ion battery positive electrode material, a manufacturing method thereof, a positive electrode sheet and a battery. The positive electrode material comprises a first component material and a second component material, the first component material is a polyanion material, the second component material is one or more of a polyanion material and / or a layer oxygen material, and the discharge platform voltage of the first component material is less than that of the second component material; the second component material is coated on the surface of the first component material, or the first component material is coated on the surface of the second component material, or the second component material and the first component material coexist in a graded manner. The application also provides a positive electrode sheet, which comprises a current collector and a first coating layer and a second coating layer arranged in sequence, the first coating layer comprises the first component material, and the second coating layer comprises the second component material. The application controls the voltage, particle size and ratio of the two component materials, so that the positive electrode material has both energy density and cycle stability.

The present application relates to the technical field of sulfuric acid production, and particularly relates to a device and method for producing sulfuric acid from high-concentration SO2 flue gas. The device and method improve the conversion rate by reforming the equipment in the purification section of the device for producing sulfuric acid from high-concentration SO2 flue gas, reducing the resistance of the device, improving the flue gas receiving capacity of the whole device, increasing the catalyst loading of the converter, improving the catalyst loading coefficient of the converter, timely screening, backfilling and supplementing new catalyst for each layer of the converter after the device is operated for a period of time, and increasing the loading amount. The device and method also increase the circulating water cooling system, improve the cooling effect of the circulating water, and meet the cooling requirements of the process for producing sulfuric acid from high-concentration SO2 flue gas.