3results 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.

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 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.