15results about How to "Good electrical conductivity" patented technology

The invention relates to the technical field of photosynthesis power generation, and discloses a device and a method for realizing photosynthesis power generation based on a liquid metal-semiconductor junction. The negative electrode comprises a metal-semiconductor junction (MSJs) consisting of liquid metal and a silicon wafer; the thylakoid suspension is positioned between the positive electrode and the negative electrode and is extracted from spinach. The liquid metal is eGaInSn room temperature liquid metal. The method comprises the following steps: extracting crushed chloroplasts and thylakoid which are rich in photosynthetic devices such as a photosystem I (PSI), a photosystem II (PS) and the like in spinach leaves by using a salt solution separation method; in combination with flexible transparent indium tin oxide (ITO), the photosynthesis power generation device with the structure of Si / LMs / BBY / ITO is manufactured. The liquid metal and the silicon wafer are combined to obtain the MSJs as the negative electrode, the electron transfer efficiency of the power generation device is enhanced, the preparation is simple, the performance is excellent, and green power generation is realized.

The application discloses a metal oxide semiconductor device and a preparation method thereof, and relates to the technical field of semiconductors. The metal oxide semiconductor device comprises a substrate, an N-type drift region and a P-type body region in the substrate, the N-type drift region and the P-type body region are arranged adjacently along the surface direction of the substrate, a drain electrode is formed on the N-type drift region, a first lightly-doped part, a heavily-doped part and a second lightly-doped part are sequentially arranged in the P-type body region along the direction perpendicular to the substrate, and the projection of the heavily-doped part on the substrate is located in the projection range of the first lightly-doped part and the second lightly-doped part on the substrate, a gate electrode is located on the substrate and covers the interface between the N-type drift region and the P-type body region, and an active electrode is formed in the second lightly-doped part. The metal oxide semiconductor device can improve the reliability of the device while keeping the performance of the device.

This invention discloses a method for preparing oxygen-free copper, relating to the field of metallurgical technology, comprising the following steps: Step S1, raw material pretreatment; Step S2, gradient melting and deoxidation; Step S3, gradient refining; Step S4, directional solidification casting; Step S5, heat treatment. The oxygen-free copper prepared by this method exhibits good mechanical properties, excellent electrical conductivity and heat resistance, and low oxygen content.

The application discloses a cobalt hydroxide nanosheet / metal cobalt catalyst and a preparation method and application thereof, and belongs to the technical field of cobalt-based electrocatalysts. The preparation method comprises the following steps: taking pretreated porous foam metal cobalt as a substrate, and performing self-corrosion reconstruction in an alkaline nitrate aqueous solution to in-situ grow cobalt hydroxide nanosheets, so as to obtain the cobalt hydroxide nanosheet / metal cobalt catalyst. The preparation method is simple in operation, the synthesized catalyst can be directly used as an electrode, the high conductive characteristics of the metal substrate are maintained, the effective connection between the nanosheet and the substrate can be realized, and the catalytic active sites are increased. The catalyst can be applied to the efficient electrocatalytic synthesis of ammonia.

The invention belongs to the technical field of semiconductor films, and relates to a visible-near infrared wide spectrum semiconductor transparent electrode and a preparation method thereof. The visible-near-infrared wide-spectrum semiconductor transparent electrode comprises a substrate and an indium tin oxide film formed on the substrate, the indium tin oxide film comprises In, O and Sn, and the film structure is a glass state indium tin oxide embedded In2O3 and SnO2 crystal particle network. The prepared indium tin oxide thin film is of a special structure that glassy state indium tin oxide is inlaid with an In2O3 and SnO2 crystal particle network, the scattering absorption of the thin film to near-infrared incident light is greatly reduced through the glassy state structure, and the average transmittance gt of the thin film in the visible to near-infrared band (380 nm to 2500 nm) is made to be gt; the In2O3 and SnO2 crystal particle network structure endows the material with good conductive characteristics, and the low resistivity of the material is lower than (lt: 10 <-3 > omega.cm).

The invention provides a method for preparing a carbon source by reinforcing kitchen waste based on a Fe composite MXene material. According to the method, the Fe composite MXene material is added in the anaerobic fermentation process of the kitchen waste, so that the external electron transfer capability of indigenous bacteria of the kitchen waste can be enhanced by utilizing Fe (III) sites on the surface of the material, the decomposition effect of organic matters in the kitchen waste is improved, and the quality of an organic biological carbon source is improved. Fe (III) on the surface of the material can be reduced by microorganisms to generate Fe (II), and the Fe (II) is oxidized into Fe (III) again when the Fe (II) is in contact with air, so that cyclic utilization of Fe (III) / Fe (II) is realized. The Fe composite MXene material can replace a traditional functional microbial agent and organic matter decomposing enzyme, the fermentation period of the kitchen waste is shortened, the solubility COD of the organic biological carbon source and the volatile organic acid carbon source are improved, and the method has wide application prospects in the aspect of preparing the carbon source from the kitchen waste.

The utility model provides an ultrathin telescopic line module and electronic equipment, and relates to the technical field of electronic equipment, the ultrathin telescopic line module comprises a data line, a rotating wheel and an electric adapter plate, the data line is wound on the rotating wheel, and the rotating wheel can rotate around the central shaft of the rotating wheel along two opposite clock directions so as to wind or unwind the data line; the electric adapter plate is connected to one end, in the axial direction of the rotating wheel, of the rotating wheel, the electric adapter plate exceeds the rotating wheel in the radial direction of the rotating wheel, and a plurality of electric connection positions are arranged on the side, facing the rotating wheel, of the electric adapter plate at intervals and electrically connected with one end of the data line. The thickness of the ultrathin telescopic line module provided by the utility model is relatively thin, so that the miniaturization of the electronic equipment comprising the ultrathin telescopic line module is facilitated.

The invention relates to a baffling type electrochemical reactor, which belongs to the technical field of electrochemical oxidation, and comprises a reaction cavity, the lower part of the reaction cavity is provided with a medium inlet, and the upper part of the reaction cavity is provided with a medium outlet; and the at least one electrode reaction unit is arranged in the reaction cavity. Wherein the electrode reaction unit comprises a plurality of anode plates and a plurality of cathode plates which are arranged in a staggered manner, spoilers are arranged at the edges of the two sides of each cathode plate, and the spoilers, the adjacent cathode plates and the blocking plates jointly form a closed baffling channel, so that when fluid flows along gaps between the anode plates and the cathode plates in the reaction cavity, the flow of the fluid is blocked; and the direction is repeatedly changed under the guidance of the spoilers, so that a Z-shaped baffling path is formed. The structure is simple, the contact area of the anode and the conductive part is large, the mass transfer rate of reactants on the surface of the electrode can be increased, the surface flow velocity of the electrode plate is improved, and the electrochemical reaction rate is increased.

The application provides a positive electrode sheet for a lithium ion battery and a lithium ion battery comprising the positive electrode sheet, the positive electrode sheet comprising a current collector and specially designed capacity layer and power layer, which can effectively eliminate the negative effects of the lithium supplement material on the battery performance during the lithium supplement material de-lithiation process in an economical and simple manner, thereby significantly improving the first coulomb efficiency, cycle performance and service life of the battery.

The invention provides a silicon-carbon negative electrode material and a preparation method thereof, and relates to the technical field of battery manufacturing. The silicon-carbon negative electrode material comprises porous carbon, nano silicon and a nano carbon layer, at least part of the nano silicon is distributed in pores of the porous carbon; at least part of the surface of the porous carbon is covered by the nanocarbon layer; and the half-peak width FWHM of the diffraction peak of the porous carbon at 16-26 degrees in an X-ray diffraction pattern is less than 12. The high-crystallinity porous carbon carrier with the FWHM smaller than 12 is utilized, the mechanical strength of a framework is remarkably enhanced, the volume expansion of nano silicon can be effectively bound, the structural integrity is maintained, and the expansion rate of the pole piece is reduced by matching with carbon layer coating, so that the cycle life of the battery is greatly prolonged.

This invention discloses a method for remediating heavy metal contaminated soil using an iron-based nanocomposite modified electrode combined with a microbial electrochemical system. The method involves first preparing a suspension of Fe₃O₄ and GO, then uniformly coating the surface of a graphite rod with Fe₃O₄ and GO using a soaking-drying method to obtain an iron-based nanocomposite modified electrode. The modified electrode is then used as the anode, and the unmodified graphite rod electrode as the cathode. The anode and cathode are connected by wires and placed in a galvanic cell containing a culture medium and heavy metal contaminated soil. A domesticated microbial strain is then introduced for leaching. The modified electrode prepared using iron-based nanocomposite materials exhibits excellent electrochemical performance, high compatibility with microorganisms, and demonstrates good remediation performance for heavy metal contaminated soil through a combination of electrochemical and biological methods.

The application discloses a method for recycling and utilizing waste lithium battery electrolyte resources, and comprises the following steps: freezing and cutting the waste lithium battery, and then putting the waste lithium battery into an organic solvent for leaching; performing solid-liquid separation to obtain first filtrate and first filter residue; performing distillation on the first filtrate to obtain mother liquor and organic distillate; adding a complexing solvent into the mother liquor for reaction, and then performing filtration to obtain second filtrate and second filter residue; heating the second filter residue to obtain lithium hexafluorophosphate solid; adding an amine compound into the second filtrate, and then performing filtration to obtain third filter residue; and heating the third filter residue to obtain lithium bisfluorosulfonylimide solid. The method realizes extraction and recovery of lithium hexafluorophosphate and carbonate solvents in the electrolyte, and can extract pure lithium bisfluorosulfonylimide from lithium hexafluorophosphate crystallization mother liquor.

The utility model relates to a kind of multilayer polycarbonate radar protective cover with outer surface heating function, including polycarbonate base material, polycarbonate base material outer surface is sequentially provided with hardening layer, ITO film layer, AR film layer, the upper end of ITO film layer is provided with upper conductive silver paste, the lower end of ITO film layer is provided with lower conductive silver paste, the cross section of the upper conductive silver paste and the lower conductive silver paste is cylindrical.The utility model can effectively improve the operating performance of radar system, prevent water vapor condensation or frost formation.

This invention proposes a method for preparing a carbon nanotube array, characterized by the following steps: 1) providing two substrates; 2) etching and annealing a metal substrate, labeled as intermediate 1; 3) depositing carbon nanotubes (CNTs) on the surface of intermediate 1, gradually heating to cause intermediate 1 to undergo a second reconstruction, labeled as intermediate 2; 4) spin-coating a polymer solution onto the surface of intermediate 2 to form a polymer film, labeled as intermediate 3; 5) etching intermediate 3 to separate the polymer and carbon nanotubes from the metal substrate; 6) transferring the separated polymer and carbon nanotubes to a surface-insulating substrate to obtain a pre-prepared sample; 7) cleaning the pre-prepared sample to obtain the finished product. This invention prepares a horizontal carbon nanotube array with high density, high orientation, and high uniformity.