48 results about "Metallic conductivity" patented technology

A process of preparing purified Ti by the way of electrolysis directly from sosoloid positive pole, TiO?mTiC. Mix the powder of C and TiO2 or TiC as measurement of chemical reaction. Then press to be certain size to make positive pole, TiO?mTiC in airvoid at 600-1600íµ. Electrolyte is halide fused salt of alkali. Electrolysis at 400-1000íµ. C and O in the positive pole form CO, CO2 and O2. Purified Ti is obtained from negative pole.

The present disclosure is directed to a method of producing metallic single-wall carbon nanotubes by treatment of carbon nanotube producing catalysts to obtain the desired catalyst particle size to produce predominantly metallic single wall carbon nanotubes. The treatment of the carbon nanotube producing catalyst particles involves contacting the catalyst particles with a mixture of an inert gas, like He, a reductant, such as H₂, and an adsorbate, like water, at an elevated temperature range, for example, at 500° C. to 860° C., for a sufficient time to obtain the catalyst particle size. In some of the present methods, the preferential growth of nanotubes with metallic conductivity of up to 91% has been demonstrated.

Provided is a color filter substrate that comprises a substrate. A black matrix, a color filter layer, and a transparent conductive layer are formed on the substrate and the color filter layer is formed in a pixel area defined by the black matrix. A metal conductivity-enhanced layer is formed above and/or below the transparent conductive layer and contacts with the transparent conductive layer in an area corresponding to the black matrix.

The invention discloses an oxygen evolution catalyst with a low noble metal loading amount for a water electrolysis unit. According to the oxygen evolution catalyst with the low noble metal loading amount for the water electrolysis unit, the catalyst is an iridium and titanium composite catalyst and is composed of powder titanium and iridium oxide loaded on the surface of the powder iridium; and the mass percent of the iridium oxide is 5 to 30 percent. According to the catalyst provided by the invention, on one hand, metal titanium powder with high metal conductivity is used as a carrier of the catalyst and the electron conductivity of the catalyst is strengthened; on the other and, the iridium and the carrier titanium are tightly combined, a bonding force between the iridium oxide and thecarrier is improved and the electron transfer rate between an active center and the carrier is improved, so that the activity of the catalyst reaches 3 times or more 3 times of that of commercial iridium oxide; and meanwhile, the dosage of the noble metal iridium can be greatly reduced and the mass ratio of the iridium can be reduced to 5 to 30 percent.

The invention provides a polymer electroluminescent device and a method for preparing the same. The device consists of a glass substrate, an anode, an anode buffer layer, a luminescent layer and a cathode which are cascaded sequentially; the preparation process of the anode buffer layer (3) comprises: the surface of the anode with metal conductivity is coated with a poly(3,4-dioxo-ethylthiophene)-poly(p-styrene sulfonate) aqueous suspension solution to form the anode buffer layer with thickness between 10 and 500 nanometers and high normal resistivity; and the poly(3,4-dioxo-ethylthiophene)-poly(p-styrene sulfonate) aqueous suspension solution is doped with polylol or a polar solvent and is coated on the anode buffer layer with high normal resistivity to obtain the anode buffer layer with normal resistivity between 1*10<5> and 2*10<6> ohm.centimeter and thickness between 1 and 100 nanometers. Compared with the prior device, the electroluminescent device has higher current efficiency, power efficiency and quantum efficiency.

The objective of the invention is to provide lead zirconate titanate/ruthenium acid strontium ferroelectric superlattice material and a preparation method thereof. The material is formed by periodically grown ferroelectric material lead zirconate titanate and metallically conductive oxide material ruthenium acid strontium. The advantages of the lead zirconate titanate/ruthenium acid strontium ferroelectric superlattice material are that the dielectric constant is increased for 2-10 times than that of a pure PZT film; and the material has great ferroelectric polarization performance, and its saturated polarization value is higher than that of the pure PZT film and can be 80muC/cm2. The preparation method of the material is that ruthenium acid strontium and lead zirconate titanate are alternately grown on a monocrystal substrate by using a pulse laser deposition method, and the periodic thickness of the superlattice is accurately regulated and controlled by controlling bombardment time of laser for different target material. The ferroelectric superlattice material has wide application prospect in sensors, storage devices and other integrated ferroelectric devices.

The invention relates to an organic electroluminescent device taking metal and P-type disc-shaped compound as composite anode, having a multi-layer structure. The organic electroluminescent device taking metal and P-type disc-shaped compound as composite anode comprises an anode film and has the improvement that the anode film is formed by a metal film and a P-type disc-shaped compound film. The composite anode of the invention breaks through the design thought of an ITO anode, and integrates the good conductivity of the metal and good hole injection of the P-type disc-shaped compound to obtain a transparent anode with favorable performance and low cost; and experiments show that: when being used for manufacturing luminescent device, the composite anode has low work voltage and has the advantages of saving the electricity and prolonging the service life under the same brightness; moreover, the cost of the composite anode is a small percentage of the ITO electrode, thereby greatly reducing the material cost of the luminescent device. Therefore, the organic electroluminescent device taking metal and P-type disc-shaped compound as composite anode has performance and cost advantages and is a powerful challenge to the traditional ITO anode to be repalced.

The invention discloses an electrochemical biosensor based on MXene-Ti<3>C<2> and a preparation method and application of the electrochemical biosensor. According to the preparation method, first, a pattern enzyme is fixedly carried on the surface of MXene-Ti<3>C<2>, wherein the surface is provided with -OH functional groups; and second, MXene-Ti<3>C<2> is mixed with a film-forming material to form a composite material, the composite material is fixed to the surface of a glassy carbon electrode, and the electrochemical biosensor is prepared. According to the electrochemical biosensor, the two-dimensional nanometer material MXene-Ti<3>C<2> is fully utilized to serve as an enzyme carrier of the sensor, and the electrochemical biosensor has a specific flaky structure, a large specific surfacearea, excellent metal conductivity and extremely good aqueous phase dispersity; the preparation process is simple, the prepared sensor has high sensitivity to a phenolic compound, a low detection limit and good reproducibility; a complicated sample pretreatment process is not needed in the detection process, response to a target compound is rapid, miniaturization is easy, and the electrochemicalbiosensor is suitable for on-site detection, continuous online monitoring, etc.

The invention belongs to the technical field of renewable energy sources, relates to a deformed photovoltaic component flexible dye sensitization solar cell as well as a preparation method and application thereof and aims to solve the problems that the traditional solar cell panels are of monotonous shapes and the polycrystalline silicon industry causes environmental pollution. By taking CNT (carbon nano tube) transparent conductive film and foam metal can be used as a conductive substrate of a composite working electrode of the flexible dye sensitization solar cell and taking the CNT transparent conductive film as a counter electrode, cells of different shapes are manufactured. Based on the characteristics of the CNT transparent conductive film, such as excellent conductive and transmitting performances and the characteristics of the foam metal, such as good conductive performance, high porosity and various shapes, the CNT transparent conductive film and the foam metal can be used asthe conductive substrate of the cell; by selecting various dyes and efficient electrolyte, taking the CNT transparent conductive film as the counter electrode, the dye sensitization solar cell is formed. The solar cells of different shapes prepared by the method provided by the invention can offset the problem of monotonous shapes of the traditional solar cell panels, which is very important to the modification of traditional building functions and the utilization of new clean energies.

A photovoltaic cell of high efficiency may be obtained using metallic nanoparticles or nanostructures as the main light absorbing element in the photosensitive layer of the cell, which absorb the light through a surface plasmon or polaron mechanism. The cell comprises at least one photosensitive layer containing nanoparticles or nanostructures each between a n-doped and a p-doped charge transport layer, characterized in that

• • the nanoparticles or nanostructures are the main light absorbing element in the photosensitive layer,
  • the nanoparticles or nanostructures have metallic conductivity and absorb near infrared, visible and/or ultraviolet light through a surface plasmon or polaron mechanism, and
  • the nanoparticles or nanostructures have at least one of their dimensions of size between 0.1 and 500 nm.

By exploiting the combination of electronic and size parameters, intense optical absorption at any wavelength within the solar spectrum (about 2500 and 300 nm) can be obtained and the whole range of the solar spectrum may be used.

A conductive ink for a rollerball pen comprises an aqueous solvent and conductive particles comprising one or more metals dispersed therein at a concentration of at least about 30 wt. %. The conductive particles include conductive flakes and conductive nanoparticles. A dispersant coats the conductive particles at a loading level of at least about 0.1 mg/m2 to about 0.8 mg/m2. A conductive trace deposited on a substrate from a rollerball pen comprises a percolative network of conductive particles comprising one or more metals. The conductive particles include conductive flakes and conductive nanoparticles. The conductive trace has a conductivity of at least about 1% of a bulk metal conductivity and a reflectance of greater than 40%.

The invention relates to a tungsten trioxide/tungsten dioxide composite material capable of being used as a negative electrode of a lithium ion battery and a preparation method of the tungsten trioxide/tungsten dioxide composite material. The preparation method comprises the following steps: uniformly mixing a citric acid solution and a tungsten source solution to obtain a mixed solution A, wherein the mole ratio of citric acid to a tungsten source in the mixed solution A is (1 to 4) to 1; adjusting the pH (Potential of Hydrogen) value of the mixed solution A to be 1 to 3 and carrying out homogeneous hydrothermal reaction at 160 DEG C to 200 DEG C; after finishing the homogeneous hydrothermal reaction, cooling to room temperature; separating out a product and washing and drying to obtain the tungsten trioxide/tungsten dioxide composite material capable of being used as the negative electrode of the lithium ion battery. According to the tungsten trioxide/tungsten dioxide composite material, tungsten trioxide with a relatively high theoretical capacity and poor cyclic performance is compounded with tungsten dioxide with a relatively low theoretical capacity; the problem that the tungsten trioxide has relatively great volume change in a circulating process is solved by utilizing the metal conductivity of the tungsten dioxide; the specific capacity is improved, the volume change in the circulating process is reduced, the discharge specific capacity of WO3 is improved and the charge transfer resistance of the WO3 is reduced.

The invention belongs to the field of electrochemistry, and particularly relates to an ultra-thin MXene nanometer material. A preparation method comprises the following steps of ultrasonically dispersing a plurality of layers of MXenes into dimethyl sulfoxide to form a stably dispersed turbid liquid, stirring, carrying out ultrasonic treatment, and carrying out centrifugal water washing to obtainthe ultra-thin MXene nanometer material. The application of the ultra-thin MXene nanometer material in detection of catechol is provided. A solution of catechol is added into an acetic acid-sodium acetate buffer solution, and a three-electrode system is adopted for detection with an electrode modified by the ultra-thin MXene nanometer material as a working electrode, an Ag/AgCl electrode as a reference electrode and a platinum electrode as an auxiliary electrode. The MXene has unique metal conductivity, biocompatibility and good dispersion in a water phase, and the ultra-thin MXene nanometer material can accelerate an electron transfer rate, so that the sensitivity and selectivity of an electrochemical sensor can be effectively improved.

The invention discloses a flexible capacitor based on a macroscopic high-conductivity MXene ribbon fiber as well as a preparation method and application of the flexible capacitor. The preparation method comprises the following steps of putting Ti3AlC2 powder into an HF solution, and stirring and washing to obtain a crystal; adding the crystal into a tetramethylammonium hydroxide aqueous solution,stirring, sequentially carrying out centrifugal treatment and washing, re-dispersing in water, and carrying out ultrasonic treatment to obtain a titanium carbide aqueous solution; injecting the titanium carbide aqueous solution into a coagulating bath to obtain the primary spun fibers; and carrying out acid treatment and washing on the primary spinning fibers to obtain the macroscopic high-conductivity MXene strip-shaped fiber with orderly stacked nanosheets, and then assembling the macroscopic high-conductivity MXene strip-shaped fiber with a diaphragm, an electrolyte and a positive electrodeto obtain the flexible capacitor based on the macroscopic high-conductivity MXene strip-shaped fiber. Based on the intrinsic metal conductivity and the directional stacked structure of the Ti3C2 nanosheet, the prepared ribbon fiber has excellent conductivity (up to 2458 S cm <-1 >). The research highlights the huge potential of the MXene as a macroscopic assembly platform, and expands the application of the MXene material in wearable electronic products.

The invention aims to provide a barium titanate/lanthanum nickelate ferroelectric superlattice film material and a preparation method thereof. The material is composed of a ferroelectric oxide material barium titanate and a metal conductive oxide material lanthanum nickelate which grow periodically. The barium titanate/lanthanum nickelate ferroelectric superlattice film material has the advantagesthat the dielectric constant is increased by 11-90% compared with that of a pure barium titanate film; the barium titanate film has good ferroelectric polarization performance, the remnant polarization intensity of the barium titanate film reaches 13.1 mu C/cm<2>, the saturation polarization intensity of the barium titanate film reaches 34.6 mu C/cm<2>, and compared with a pure barium titanate film, the remnant polarization intensity of the barium titanate film is improved by 140%, and the saturation polarization intensity of the barium titanate film is improved by 58%. According to the preparation method of the material, lanthanum nickelate and barium titanate are alternately grown on a single crystal substrate by using a pulse laser deposition method, and the period thickness of superlattices is accurately regulated and controlled by controlling the time of laser bombarding different target materials. The ferroelectric superlattice material has wide application prospects in ferroelectric memories, sensors, actuators and other integrated ferroelectric devices.

The invention discloses a technology for improving welding strength of PV ribbon by plating an Ni/V layer via a mask, comprising the following steps: before an Ni/V membrane is plated, a layer of mask plate covers the position to be welded with the PV ribbon on a thin film a-Si/mu c-Si tandem solar cell to enable the covered position not to be plated by the Ni/V metal membrane, and the mask plate is removed to enable the position to be welded with the PV ribbon to retain an Ag metal membrane. The invention has the advantages that compared with the conventional PVD coating film, the Ag metal membrane is exposed from the position to be welded with the PV ribbon; Ag has better metallic conductivity and is not easy to generate an oxide layer under high temperature; the outer surface tin-plating layer of he PV ribbon also contains the Ag component; and with the help of flux, the Ag metal membrane is easy to be welded firmly with the PV ribbon and has better conductivity.

The invention discloses a radio frequency microwave device and a micro nitrogen doped graphene film. The nitrogen doped graphene film is prepared by adopting the following method: polyimide, polyamide and nitrogen doped graphene are printed into a film, and the thickness is controlled to be within 5-100 microns; hot-press forming is performed at a temperature of 50-200 DEG C so as to prepare a graphene film; the acquired graphene film is placed in a graphene high temperature furnace and subjected to heat treatment at a temperature of 200-600 DEG C and a temperature of 2000-3000 DEG C respectively, and finally hot-press forming is performed at a temperature of 50-200 DEG C so as to prepare a flexible graphene film. The radio frequency microwave device is prepared by adopting the nitrogen doped graphene film. Compared with traditional carbon-based materials, the graphene film prepared according to the invention has a high in-plane orientation structure, thus the graphene film is enabled to have excellent conductivity and low plane impedance, and the conductivity of the graphene film can be compared with the conductivity of metal. Meanwhile, the nitrogen doped graphene film has a characteristic of low consumption, can be bent and has the advantages of low cost, simple manufacturing process and ability of being more environment-friendly.