5results about How to "Easy to dope" patented technology

The application provides a sodium ion battery negative electrode material and a preparation method thereof. The preparation method of the sodium ion battery negative electrode material comprises the following steps: obtaining a coal-based raw material; performing a defect operation on the coal-based raw material, so that the coal-based raw material is oxidized and crosslinked to obtain a pre-oxidized coal-based negative electrode material; performing a hot extraction treatment on the pre-oxidized coal-based negative electrode material to remove organic impurities in the pre-oxidized coal-based negative electrode material; and performing a high-temperature doping operation on the pre-oxidized coal-based negative electrode material after the hot extraction treatment to obtain the sodium ion battery negative electrode material. The preparation method of the sodium ion battery negative electrode material can effectively change the disorder degree of the microstructure, increase the interlayer spacing of the coal-based raw material, and further effectively improve the reversible specific capacity and the cycle performance.

This invention provides a perovskite solar cell and its fabrication method. The fabrication method of the perovskite solar cell includes the following steps: forming a first electrode layer on one side surface of a substrate; and forming NiO on one side surface of the first electrode layer using a magnetron sputtering process. x The layer uses a nickel oxide target. During magnetron sputtering, oxygen is introduced into the magnetron sputtering chamber at a flow rate of 4.5 sccm to 15 sccm and a temperature of 100°C to 140°C. The aforementioned NiO... x The layer preparation method facilitates the doping of oxygen molecules into the nickel oxide film, thus achieving the desired oxygen doping level without the need for excessive oxygen introduction, and enabling precise control of NiO. x The oxygen content of the layer; the low oxygen content in the magnetron sputtering chamber can prevent NiO. x Excessive oxygen doping in the NiO layer ensures the photoelectric conversion efficiency of the perovskite solar cell; the aforementioned NiO x The layer preparation method also improves the uniformity of oxygen distribution within the magnetron sputtering chamber, thereby enhancing the NiO content. x The uniformity of oxygen doping in the layer improves the performance uniformity of perovskite solar cells.

A dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse code modulation technology belongs to the field of functional photonic chip technology. It consists of a substrate layer, a buffer layer, a cladding layer, a bottom waveguide layer, and a top waveguide layer. The cladding layer is divided into three parts: a lower cladding layer, a middle cladding layer, and an upper cladding layer. The bottom waveguide is located within the middle cladding layer, and the top waveguide is located within the upper cladding layer. The bottom and top waveguides do not overlap in the chip's top-view plane. The waveguide layer material is obtained by doping fluorescent small-molecule oligomer chromophores into a polymer material. This invention achieves signal optical pulse coding by modulating the pump light power intensity. By detecting changes in optical transmission loss in the fiber optic system, it determines whether eavesdropping has occurred. Eavesdropping is indicated by optical transmission loss exceeding a threshold. False information is displayed in the bottom waveguide for disguise, while the modulated information is transmitted encrypted through the top waveguide, thus solving the problems of limited controllability and insufficient security in traditional encryption technologies.

The application discloses a ferrous sulfide composite catalyst and a preparation method thereof. The ferrous sulfide composite catalyst comprises a nitrogen-doped carbon layer, and ferrous sulfide nanoparticles are loaded on the nitrogen-doped carbon layer. The preparation method comprises the following steps: mixing iron chloride and ethanol, adding thiourea and o-phenanthroline, stirring, obtaining a precursor dispersion, mixing with melamine, stirring, drying, and obtaining a precursor powder; and calcining the precursor powder, acid washing, and obtaining the ferrous sulfide composite catalyst. The ferrous sulfide composite catalyst has the advantages of excellent catalytic activity, strong stability and the like, can effectively activate an oxidant, a system constructed by the ferrous sulfide composite catalyst can quickly generate a large amount of active species, is favorable for quickly and completely degrading refractory organic pollutants in wastewater, and has high use value and good application prospect. The preparation method also has the advantages of simple process, convenient operation, low cost and the like, and can realize large-scale production and be favorable for industrial application.

The application discloses a kind of preparation device of biomass-based hard carbon negative material, comprising: surface distortion system, high-energy surface modification system and high-temperature carbonization system.The application also provides a kind of preparation device of biomass-based hard carbon negative material for preparing biomass-based hard carbon negative material using the above preparation method and the application of biomass-based hard carbon negative material prepared by the above preparation method.The preparation device and preparation method of biomass-based hard carbon negative material of the application are based on the principle of biomass heteroatomic doping modification-high temperature pyrolysis carbonization, based on the crystal structure characteristics of hard carbon material, combined with material surface distortion-high-energy surface modification-high-temperature carbonization, which can improve production efficiency and reduce production cost while realizing the efficient preparation of biomass-based amorphous hard carbon negative material.