181results about How to "Facilitates electron transport" patented technology

The present invention relates to novel electroactive energy storing polyacetylene-co-polysulfur (PAS) materials of general formula (C2Sx)n wherein x is greater than 1 to about 100, and n is equal to or greater than 2. This invention also relates to novel rechargeable electrochemical cells containing positive electrode materials comprised of said polyacetylene-co-polysulfur materials with improved storage capacity and cycle life at ambient and sub-ambient temperatures.

The invention provides a silicon-carbon composite material of a closed cage structure and a preparation method of the silicon-carbon composite material of the closed cage structure. The silicon-carboncomposite material of the closed cage structure is a hollow filled structure material in a closed cage form; the core of the hollow filled structure material is a silicon material-filled porous carbon material; the porous carbon material is filled with a silicon material; the silicon material has the void content of 50-95% in the porous carbon material; and a carbon material coats the outside ofthe silicon material-filled porous carbon material and the specific component of the carbon material is (SiOx)yC, wherein x is smaller than or equal to 2 and greater than or equal to 0 and y is smaller than or equal to 1 and greater than 0. When the silicon-carbon composite material of the closed cage structure is used as a negative electrode of a battery, contact of the silicon material and an electrolyte is isolated, the life of the battery is prolonged and the capacity performance and the cycle performance of the battery are improved.

A method is provided for synthesizing a metal-doped transition metal hexacyanoferrate (TMHCF) battery electrode. The method prepares a first solution of AxFe(CN)6 and Fe(CN)6, where A cations may be alkali or alkaline-earth cations. The method adds the first solution to a second solution containing M-ions and M′-ions. M is a transition metal, and M′ is a metal dopant. Subsequent to stirring, the mixture is precipitated to form AxMcM′dFez(CN)n.mH2O particles. The AxMcM′dFez(CN)n.mH2O particles have a framework and interstitial spaces in the framework, where M and M′ occupy positions in the framework. Alternatively, the method prepares AaA′bMyFez(CN)n.mH2O particles. A and A′ occupy interstitial spaces in the AaA′bMyFez(CN)n.mH2O particle framework. A metal-doped TMHCF electrode is also provided.

The invention relates to a preparation method of a Pt nanometer particle-modified Cu nanowire array electrode and a use of the Pt nanometer particle-modified Cu nanowire array electrode in an enzyme-free glucose sensor. The preparation method comprises spraying gold to a porous AAO template, fixing Cu foil to the surface of the electrode with a sprayed gold layer through a conductive adhesive, sealing the surrounding parts of a template through insulative silicone rubber, constructing a three-electrode system of the template as a work electrode, a saturated calomel electrode as a reference electrode and a platinum electrode as a counter electrode, putting the three-electrode system into CuSO4 and H2SO4 electrolyte, carrying out constant current electro-deposition, then carrying out immersion in a NaOH solution to remove the AAO template so that a Cu nanowire array structure is obtained, carrying out repeated cleaning through distilled water and carrying out constant potential deposition in H2PtCl6 and H2SO4 electrolyte to obtain the Pt nanometer particle-modified Cu nanowire array electrode. The Pt nanometer particle-modified Cu nanowire array electrode is used for an enzyme-free glucose sensor.

The invention discloses a Li-Se battery. The anode material of the Li-Se battery is elemental selenium, the elemental selenium can be porous elemental selenium microspheres, a selenium nano-wire or a selenium nano-ribbon. The invention also provides a thermal evaporation method for growing of the anode material. The Li-Se battery prepared by the method provided by the invention has favorable stability, and the specific capacitance of the battery is 900 mAh / g after the battery is repeatedly charged and discharged 100 times. The Li-Se battery disclosed by the invention can effectively solve the problems of low capacitance, complexity of synthesis, expensive cost, undesirable circulation, and poor electrical stability of the existing lithium ion battery, and has the advantages of simpleness in battery package, high efficiency, rapidness, low cost of raw materials and high practical applicability; and moreover, the Li-Se battery is suitable for being popularized.

The invention discloses a high-strength flexible self-supporting electromagnetic shielding thin film and a preparation method thereof. Silver nanowires are loaded on nanocellulose through an adhesionaction of polydopamine to obtain high-conductivity polydopamine modified nanocellulose conductive fibers; the sheet layer of two-dimensional Ti3C2 is stripped for the first time through the effect ofan auxiliary intercalation layer of the conductive fibers, so that the intercalation rate and the interlayer spacing are improved, and a single layer or a few layers of 2-10 layers of Ti3C2MXene nanosheets can be obtained; meanwhile, one-dimensional conductive fibers and the two-dimensional nanosheets are self-assembled into a three-dimensional "brick-mud"-structured conductive network through anelectrostatic effect of positive and negative charges and a hydrogen bond effect; and finally, the flexible electromagnetic shielding thin film is synthesized in one step through a high-pressure pressing and filtering method. The flexible self-supporting thin film prepared by the method has the characteristics of being remarkable in electromagnetic wave shielding effect, high in mechanical strength, high in bending flexibility and simple in synthetic process, and can meet the specific requirements of the flexible electronics in actual application.

The system includes an array of transducers that simultaneously senses multiple intralumenal pressures, a data acquisition module that acquires and stores samples of the measured pressures, software routines for signal analysis, a software module for multi-dimensional data display presentations, and a software module to perform pattern recognition on the acquired data set to identify potential maladies that may be indicated by the analysis. The transduction elements are cylindrical segments that deform according to the circumferential pressures encountered. Distributing a quantity of these sensor segments at desired locations along a flexible support structure and providing a flexible sheath over the entire length forms the sensor array. Measuring the sensor deformation provides an electrical analog of the pressure causing the deformation. Acquiring these measurements in a suitable data acquisition and processing unit, including a display, printing, and plotting capability, completes the hardware elements. Integrated software modules complete the system.

A method, system, article of manufacture, and propagated signal which provides an easy and flexible way for consumers to print digital photographs received and processed from a variety of different sources and a variety of different ways. Image information, which represents a photographic image, is received from several different sources, order information is received from an external network, the order is processed based on the digital image and the order information, and the photographic images are then output or uploaded in order to produce a photographic print or merchandise with an image printed thereon. The ordering of products is also improved by maintaining the images to be uploaded in a local memory until the order is complete.

The invention discloses a silver nanowire electrode-based efficient flexible quantum dot light-emitting diode and preparation thereof. The silver nanowire transparent electrode-based flexible quantumdot light-emitting diode is characterized by comprising a flexible transparent cathode, an electron transport layer, a quantum dot light-emitting layer, a hole transport layer, a hole injection layerand a metal anode from bottom to top, wherein the flexible transparent cathode is a composite electrode formed by embedding silver nanowires into a flexible substrate. According to the silver nanowireelectrode-based efficient flexible quantum dot light-emitting diode, the smooth surface of a nano zinc oxide layer is obtained through improving the key parameters and conditions of a corresponding device preparation process and modifying the surface of the electrode by using nano zinc oxide, so that the electron transport property of the nano zinc oxide is ensured, the effect, of enhancing the light extraction efficiency of the flexible quantum dot light-emitting diode, of the silver nanowire flexible transparent electrode is brought into fully play, and the light-emitting efficiency of theflexible quantum dot light-emitting diode is effectively improved to the world leading level.

The invention provides a multilevel structure titanium dioxide nanowire array and a preparation method thereof. The multilevel structure titanium dioxide nanowire array is an array consisting of titanium dioxide nanowires; and the titanium dioxide nanowires are of multilevel structures and comprise titanium dioxide monocrystal nanowires and titanium dioxide nanoparticles coating the surfaces of the titanium dioxide monocrystal nanowires. The surfaces of the titanium dioxide monocrystal nanowires are coated with the titanium dioxide nanoparticles, and the formed array is of high specific surface area and packing density, so that the electrochromism performance, capacitive performance, photoelectric property and the like of the array can be improved.

The invention provides an organic compound and an electroluminescent material and applications thereof; the organic compound has a structure represented by a formula I, by designing a spiro parent nucleus structure and introducing a specific substituent, material stacking can be prevented, and the crystallinity of molecules can be reduced; due to the design of the spiro structure and a substituentgroup, the organic compound has a high triplet state energy level T1, and due to a nitrogen heterocyclic ring and a connecting group thereof, the organic compound has relatively good electron transport and hole transport characteristics; HOMO and LUMO energy levels are appropriate, so that energy level matching with adjacent layers is facilitated; the glass transition temperature is high, and themolecular thermal stability is good; the light-emitting efficiency and the service life of the device can be effectively improved. The organic compound can be used as an electroluminescent material for a light-emitting layer, a hole blocking layer or an electron blocking layer of an OLED device, is especially suitable for being used as a phosphorescent host material to be applied in the light-emitting layer, and can significantly improve the light-emitting performance of the device and prolong the service life of the device.

This invention belongs to photo-electricity field, particularly a kind of thiophene spiral ring material and its preparation method, and its application in organic flat plate display, photo-volt cells, organic field effect tube and laser etc. organic electron field. This kind of compound introduces thiophene and functional thiophene in to conjugate semi-conductor material through spiral ring structure. The virtue are: (1) the synthesis is convenient and easy to get, and may be further modified; (2) may effectively realize photo-electricity property of modulate material; (3) with the virtue of high spectrum stability of spiral difluorene structure. The luminescence apparatus incurred by electricity prepared with this invent material has satisfaction result in brightness and luminescence efficiency. Thiophene spiral ring will be a potential commercialised photo-electricity material.

The invention discloses an all-solid-state sensitized solar cell and a preparation method thereof. The all-solid-state sensitized solar cell sequentially comprises a photo anode, an interface modification layer, a hole transport layer and a counter electrode from bottom to top, wherein the photo anode sequentially comprises a conductive glass layer, a dense film layer, a porous film layer and a sensitizer layer form bottom to top, and the dense film layer and the porous film layer are both made from titanium dioxide; the sensitizer layer is made from CH3NH3PbI3; the inference modification layer is made from aluminum oxide or magnesium oxide; the hole transport layer is made from spiro-MeOTAD or PTAA; the counter electrode is an Au electrode. The preparation method comprises the steps of during a process of preparing the solar cell, enabling a thin film to be immersed in polymeric precursor solution of the aluminum oxide after the sensitizer layer is prepared and before the spin-coating of a hole transport material is carried out, and obtaining an aluminum oxide interface modification material after natural drying, wherein the charge recombination can be prevented by the interface modification material, and the electron injection efficiency can be increased. According to the all-solid-state sensitized solar cell and the preparation method, disclosed by the invention, the cost is low, the photoelectric conversion efficiency of an all-solid-state dye-sensitized solar cell can be obviously increased, and a great significance is obtained for practical application of the all-solid-state dye-sensitized solar cell.

The invention belongs to the technical field of energy materials, and particularly relates to a non-stoichiometric bismuth telluride-based thermoelectric material and a preparation method thereof. Thematerial disclosed by the invention has a chemical composition shown as the following general formula: BixSb2xTe3+y, and the preparation method comprises the following steps: firstly, weighing Bi simple substance powder, Sb simple substance particles and Te simple substance powder raw materials according to the chemical composition of the general formula, carrying out ball milling treatment to obtain powder, and carrying out cyclic discharge plasma sintering treatment on the obtained powder for 1-5 times to obtain a block sample. The bismuth telluride-based thermoelectric material prepared bythe method is good in crystallinity and compact in structure, and compared with a sample prepared by a traditional mechanical alloying and sintering combined method, the bismuth telluride-based thermoelectric material is obviously increased in grain size and introduces a large number of dislocations, so that the electrical property is improved, the lattice thermal conductivity is reduced, and thethermoelectric property is excellent. Meanwhile, the preparation method is simple and convenient to operate, short in period, free of high-temperature risk and low in energy consumption, and has a wide application prospect.

The present invention belongs to the field of photoelectronic material technology, and is especially double spiro material containing hetero atom and its preparation process and application in organic plate display, photovoltaic cell, organic FET, laser and other organic electronics fields. The compounds are conjugate semiconductor material with double spiro structure introduced hetero atom. The double spiro material has the advantages of simple synthesis, capacity of further modification, effective realization of the photoelectronic property of modulation material, high heat stability, high vitrification point, etc. The material of the present invention may be used in producing photoluminescent device with satisfied brightness and light emitting efficiency, and has commercial application latent.

The invention relates to a silicon-containing negative electrode sheet and a preparation method thereof, and a lithium ion secondary battery prepared from the silicon-containing negative electrode sheet. The silicon-containing negative electrode sheet comprises: 1) a current collector; 2) a porous composite layer located on the current collector; and 3) a silicon-containing negative electrode material layer located on the porous composite layer, wherein the porous composite layer can be arranged on one side or two sides of the current collector, and the silicon-containing negative electrode material layer is arranged on the porous composite layer. According to the invention, the adhesive force between the silicon-containing negative electrode material and the current collector in the silicon-containing negative electrode sheet is improved, so that the lithium ion secondary battery prepared from the silicon-containing negative electrode sheet has relatively high energy density and relatively good cycle performance, and well meets industrial application.

The invention discloses a method for preparing a nanometer composite film consisting of a titanium dioxide nanotube and a nanocrystalline. The method has the following steps of: preparing a titanium dioxide nanotube vertically on a titanium substate by an anodizing method; filling a precursor sol which can form the nanocrystalline into the nanotube, and carrying out heat treatment to obtain the nanometer composite film consisting of the titanium dioxide nanotube and the nanocrystalline. The invention has the advantages of simple preparing process, low cost and controllable film structure. The composite film prepared by the method can be used as the photoanode of the solar battery, and is favorable for enhancing the photoabsorption and electronic transmission of the photoanode.

The invention discloses a cobalt-nickel bimetallic catalyst and a preparation method thereof. Biological micromolecules are taken as a nitrogen source to prepare porous carbon. A metal organic framework compound is in-situ loaded or wrapped and pyrolyzed at a high temperature to prepare the heteroatom doped cobalt-nickel bimetallic catalyst. The raw materials are easy to obtain and low in price, and a new nitrogen source does not need to be introduced during the preparation of a nitrogen-doped porous carbon material. The catalytic performance of the material can be further improved through thesynergistic effect of cobalt and nickel. A good method is provided for preparing a non-noble metal catalyst, and a basis is provided for further experimental optimization and industrial production.

The invention discloses a nitrogen-phosphorus doped two-dimensional carbon / silicon compound and a preparation method and application thereof. The preparation method comprises the following steps 1, dissolving a carbon source in deionized water, then adding a silicon source, uniformly mixing, adding NaCl, uniformly mixing, drying the mixture to obtain a solid, and grinding the solid into powder, 2,putting the powder into a tubular furnace, calcining in protective gas, etching a NaCl template by using deionized water, and drying to obtain a two-dimensional carbon / silicon compound, and 3, dissolving the two-dimensional carbon / silicon compound and a nitrogen source in deionized water, stirring, then adding a phosphorus source and stirring and calcining in protective gas to obtain the nitrogen-phosphorus doped two-dimensional carbon / silicon compound. The nitrogen-phosphorus-doped two-dimensional carbon / silicon compound is low in cost, can be produced on a large scale, not only has a relatively high specific surface area and relatively good electron transmission performance, but also can greatly buffer the volume change of silicon in a lithium de-intercalation and intercalation process,is applied to a lithium ion battery negative electrode material, and has a very good application prospect.

The invention discloses a carbon nanotube and covalent organic framework compounded OER catalyst, and belongs to the technical field of water electrolysis catalysis. The carbon nanotube and covalent organic framework compounded OER catalyst is composed of a molecular catalyst and a conductive carbon carrier, the molecular catalyst is formed by covalent organic frameworks COFs and metal ions through coordination, and the conductive carbon carrier is carbon nanotubes CNTs. The high conductivity of CNTs and the synergistic effect of surface active material metal coordination COFs are combined, and the accessibility of catalytic conduction, mass transfer and active sites is greatly improved, so that the oxygen evolution catalytic activity of the catalyst is improved. And a solvothermal preparation method is adopted, so that the method is simple and safe.

The invention provides an organic compound represented by: and an organic light emitting diode and an organic light emitting display device using the organic compound. The organic compound of the present invention is capable of reducing a driving voltage of an organic light emitting diode and improves an emitting efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the organic compound.

The invention relates to a ferroferric oxide@titanium dioxide nanorod array electrode on a titanium substrate and a preparation method of the ferroferric oxide@titanium dioxide nanorod array electrode. The ferroferric oxide@titanium dioxide nanorod array electrode on the titanium substrate is characterized by comprising a titanium metal substrate and a ferroferric oxide@titanium dioxide composite nanorod array growing on the titanium metal substrate; the diameter of a single composite nanorod is 85-115nm and the composite nanorods are vertically, uniformly and densely distributed on the surface of the titanium metal substrate and are in an array form; and titanium dioxide coats the outer surface of ferroferric oxide. According to a titanium dioxide protection layer of the ferroferric oxide@titanium dioxide nanorod array electrode on the titanium substrate, the cycle performance of the electrode can be greatly improved, the side reaction of water electrolysis in an electrolyte is effectively suppressed, the capacity of the electrode is improved, the electrochemical properties are greatly improved, and particularly, the cycle performance is outstanding; and the ferroferric oxide@titanium dioxide nanorod array electrode can be used as a negative electrode material for a water-based hybrid super-capacitor (or other hybrid electrochemical energy storage devices).

The invention relates to an organic ultraviolet light detection device of a visible blind area, which takes Cu (I) coordination compound triplet-state materials with high electron transmission performance as electron acceptor components. The organic ultraviolet light detection device comprises an ITO (Indium Tin Oxid) conducting glass layer, an electron donor layer, a donor and acceptor material mixing layer, an electron acceptor layer, an electron injection layer (LiF (Lithium Fluoride)) and an Al cathode layer, wherein the donor and acceptor material mixing layer is formed by respectively mixing and depositing the Cu (I) coordination compound triplet-state materials with TPD and NPB (n-Propyl Bromide) or m-MTDATA; and the electron acceptor layer adopts the Cu (I) coordination compound triplet-state materials. The invention greatly improves the performance of the organic ultraviolet light detection device by using novel electron acceptor materials.

The invention relates to a preparation method for a carbon negative electrode material of a sodium ion battery, and belongs to the technical field of synthesis of a new energy material. The preparation method comprises the steps of washing and drying acquired sakura petals, performing calcination in a protection atmosphere, taking out a product after reaction is completed, placing the product in an HC1 solution, immersing the product under a room temperature, and finally, fully washing the immersed product with deionized water and obtaining the carbon negative electrode material of the sodiumion battery after drying. According to the preparation method, the sakura petals are used as a raw material and are successfully converted to a carbon material by high-temperature calcination, the carbonized petals are immersed in an acid liquid to remove inorganic particles formed in a surface, and the sheet-shaped carbon negative electrode material with a corrugated surface of the sodium ion battery is obtained. The material is beneficial for rapid ion and electron transmission and is suitably used as a high-activity electrode material for the sodium ion battery.

The invention relates to a method for preparing a flexible supercapacitor which combines a graphene oxide / polymer with a protein membrane as a flexible substrate. Firstly, the graphene oxide is uniformly dispersed ultrasonically, and a purified eggshell membrane is completely immersed in the graphene oxide solution; the graphene oxide is self-assembled on a surface of the eggshell membrane under ahydrothermal condition, and the polymer is grown on the reduced eggshell membrane / the graphene substrate; the composite eggshell membrane is washed and dried, and the flexible supercapacitor is assembled in a "sandwich" structure by using the PVA-phosphoric acid as an electrolyte and the filter paper as a separator. The method for preparing the eggshell membrane / graphene / polymer composite flexible supercapacitor is simple, and the raw material cost is low; the prepared supercapacitor has a large specific capacitance, and can effectively construct a transmission resistor; and electron transmission is facilitated in the electrolyte, and the electrochemical performance of the flexible supercapacitor is improved.

The invention relates to an electronic-transmission luminescent material and application thereof. The electronic-transmission luminescent material uses spirofluorene as a parent nucleus which is connected with one or two terpyridyl groups. The spirofluorene is an important blue-fluorescence parent nucleus, the molecule is a twisted non-coplanar structure, the intramolecular conjugation degree is reduced, and the introduction of the blue shift of the luminescence wavelength effectively enhances the color purity of the device. The twisted structure can avoid molecular cohesion and enhance the luminescence efficiency. The rigid structure of the spirofluorene greatly enhances the heat stability of the molecules. Pyridine is an electron-deficient molecular structure, and is a compound which is widely used as an electronic transmission layer in OLEDs (organic light-emitting diodes). The material has the advantages in the spirofluorene and pyridine, and can be used as a blue luminescent material, electronic transmission material and or electronic transmission and luminescent material.