762results about How to "Good electrical conductivity" patented technology

The present invention is generally related to electrolytes containing anion receptor additives to enhance the power capability of lithium-ion batteries. The anion receptor of the present invention is a Lewis acid that can help to dissolve LiF in the passivation films of lithium-ion batteries. Accordingly, one aspect the invention provides electrolytes comprising a lithium salt; a polar aprotic solvent; and an anion receptor additive; and wherein the electrolyte solution is substantially non-aqueous. Further there are provided electrochemical devices employing the electrolyte and methods of making the electrolyte.

The invention discloses a preparation method of a nitrogen-doped MXene battery anode material and application thereof in a lithium ion battery and a sodium ion battery. The preparation method of the nitrogen-doped MXene battery anode material comprises two steps of preparation of an MXene material and nitrogen doping on the MXene material, wherein the invention discloses a solvothermal method, a thermal treatment method, a plasma treatment method and a microwave irradiation gas phase method which are used for carrying out the nitrogen doping on the MXene material. According to the preparation method of the nitrogen-doped MXene battery anode material, disclosed by the invention, the nitrogen-doped MXene battery anode material prepared through multiple methods has good conductivity, good cyclic stability, good rate capability and higher specific surface area, and is suitable for large-scale development and application of the lithium ion battery or the sodium ion battery.

Radio frequency (RF) connectors and electronics housings and packages employing one or more inventive RF connector(s) provided herein utilize a ground spring to achieve improved conductivity of the ground signal by making a plurality of contacts with a ferrule member of the RF connector's hermetic feedthru and a plurality of contacts with the electronics housing or package at points adjacent to an air dielectric. Ground springs used in connection with the present RF connectors maintain predetermined spring properties under compression and/or extreme environmental conditions, including thermal fluctuations, and therefore may be suitably employed in aircraft and spacecraft.

Provided are a porous silicon-carbon composite, which includes a core including a plurality of active particles, a conductive material formed on at least a portion of surfaces of the active particles, first pores, and second pores, and a first shell layer which is coated on the core and includes graphene, wherein the active particles include a plurality of silicon particles, silicon oxide particles, or a combination thereof, the first pores are present in the core and are formed by agglomeration of the plurality of active particles, and the second pores are irregularly dispersed and present in the core, has an average particle diameter smaller than an average particle diameter of the active particles, and are spherical, a method of manufacturing the same, and a negative electrode and a lithium secondary battery including the porous silicon-carbon composite.

The invention provides an antistatic, antibacterial and graphene-reinforced composite polyester fiber, which is characterized in that the composite polyester fiber comprises a component A and a component B, wherein the component A is polyester excluding graphene, and the component B is polyester including 0.3-3.0wt% of graphene. The invention also provides a preparation method of the composite polyester fiber. The composite polyester fiber provided by the invention is low in cost, high in strength, and high in antistatic and antibacterial properties.

The invention uses copper-clad aluminium conductor as conductive wire core whose inner core is aluminium wire and outer is cylinder copper roofing, the conductive wire also can be at least two conductive wire cores of copper-clad aluminium conductor which are parallel or winding with each other, the outer of conductive wire core is covered with insulated layer of PVC or polyethylene or cross-link polyethylene or rubber. The insulated material such as PVC, polyethylene, cross-link polyethylene or rubber is covered around the conductive wire core to produce copper-clad aluminium wire cable. The copper-clad aluminium wire cable possesses the same conductivity as copper core cable with the same specification, weight is light, easy to process, usage is convenient, and copper can be saved for 80% or above, cost of product can be decreased effectively, defects that the surface of aluminium cable is easy to be oxidized, resistance is big, corrosion resistance and machine performance are poor can be avoided.

A conducting fiber containing carbon nm tubes includes the following three components polyester, carbon nm tube and coupler with the weight ration of polyester 80-94.9, carbon nm tube 0.05-10, the coupler 0.05-10. The three components are prepared to conducting fibers via mix, extrusion and fiber spinning having the composite shapes of interlayer, sheath-core and island, characterizing in utilizing the fine conductivity of the carbon nm tubes and extremely length-diameter ratio to prepare conducting fibers, Special coupler is selected to strongthen the interaction of carbon nm tube and the polyerter to open the coacervates of the tube in the blend process by cutting.

The invention discloses a low-cost mass preparation method of high-quality graphene. The low-cost mass preparation method comprises the following steps that graphite and an additive undergo a local or intercalation reaction so that boundary functionalization or intercalated graphite formation is realized; and graphite is peeled by ball milling or an ultrasonic method so that graphene is obtained. The high-quality graphene has water solubility and can forms good graphene hydrosol. Compared with graphene obtained by the traditional chemical peeling method, the high-quality graphene provided by the invention can be prepared simply, has a low cost, less defects, good conductivity and high quality and is suitable for mass production. The high-quality graphene provided by the invention has wide application prospects in photoelectric devices such as copper indium gallium diselenide, cadmium telluride and dye sensitization solar cells and in fields of panel display, supercapacitors, field emitter materials, and lithium ion batteries.

The invention relates to an ultraviolet photo-cured coating for the electrostatic prevention of the surface of plastic and a preparation method thereof, in particular to a photo-cured coating containing conductive powder of a metal oxide system or composite conductive powder. The coating comprises the following compositions in weight percent: 30 to 70 percent of oligomer, 25 to 65 percent of active thinner, 0.5 to 10 percent of light evocating agent, 5 to 40 percent of conductive powder, 0.2 to 8 percent of additive and 0 to 50 percent of solvent. As the added conductive powder of the metal oxide system and the composite conductive powder is white or light color, the prepared photo-cured has the characteristic of easy color modulation, has lasting antistatic property, high rigidity and wearing resistance, can be used for electrostatic prevention of the surface of electronic equipment, plastic vessel, shell of an electric appliance, office supplies, sports equipment and other plastic products.

A process for preparing the cubic silver nanocrystals includes such steps as proportionally dissolving surfactant and silver nitrate in organic solvent while stirring, slowly adding to an organic solvent at 150-180 deg.C to obtain the saturated solution of Ag nanoparticles, continuous reacting, and slow cooling while stirring to obtain the sol of cubic silver nanocrystals. Its advantage is high purity and dispersity.

The present invention provides a light-emitting element comprising: a carbon layer comprising a graphene; a plurality of fine structures having grown toward the upper side of the carbon layer; and a light-emitting structure layer formed on the surface of the fine structures

Disclosed herein are a method for manufacturing a graphene transparent electrode and a graphene transparent electrode manufactured by the method. The method includes: providing a graphene oxide solution: forming a metal thin film on a glass substrate; coating the graphene oxide solution on the metal thin film, followed by drying; primarily reducing the thus obtained graphene oxide by using a reducing agent, to obtain reduced graphene oxide; secondarily reducing the reduced graphene oxide by heat treatment under the inert atmosphere, to form a reduced layer; compressing a transparent film on the reduced layer; and etching the metal film by an etching solution. The method enables a graphene transparent electrode having economical feasibility and excellent electric conductivity to be manufactured.

The present invention relates to a conductive adhesive, a method for manufacturing the same, and an electronic device including the same. The conductive adhesive includes: a conductive particle; a low-melting alloy powder including an alloy including Sn and at least one material selected from the group consisting of Ag, Cu, Bi, Zn, In, and Pb; a nano powder; a first binder including a thermosetting resin; and a second binder including a rosin compound.

The present invention relates to a metal microgrid transparent electrode and fabricating method thereof. The transparent electrode has orderly metal microgrid structure whose thickness is 10-50nm, width is 140-800 nm and aperture is 1-6 mum. The fabricating method is that: assembling single-layer colloid crystal template by monodisperse polystyrene microspheres, depositing metal in template sews by magnetron sputtering technique, and the sputtering time is 5-10 minutes; at last, eliminating single-layer colloid crystal template by ultrasonic washing of organic solvent for 20-30 minutes and the said transparent electrode is gained. The metal microgrid structure of transparent electrode has high light transmittance, low resistance and low cost, has widely usage in optoelectronic device, photodetector and semiconductor irradiance. The fabricating method of present invention has simply technics and easy operation.

The invention provides a conductive adhesive for lithium ion batteries. The conductive adhesive comprises graphene and a first adhesive grafted to the surface of the graphene, and the first adhesive comprises at least one of polyvinyl alcohol, sodium carboxymethylcellulose, polyethylene glycol, polylactic acid, polymethyl methacrylate, polystyrene, polyvinylidene fluoride, hexafluoropropylene polymer, styrene-butadiene rubber, sodium alga acid, starch, cyclodextrin and polysaccharide. The conductive adhesive for lithium ion batteries has good conductivity and adhesive property, and is of certain strength, so that the integral mechanical strength of the electrode plate can be strengthened; the conductive adhesive realizes that the adhesive is combined with a conductive agent, so that the content of active substances in the electrode plate can be increased, and the energy density of cells is further increased. The invention also provides a preparation method of the conductive adhesive, an electrode plate containing the conductive adhesive and the lithium ion battery.

The invention relates to a graphene composite material for a cathode of a lithium ion battery and a preparation method of the graphene composite material, belonging to the technical field of preparation of the electrodes of the lithium ion batteries. The preparation method of the graphene composite material for the cathode of the lithium ion battery comprises the steps of: oxidizing and ultrasonically dispersing a graphene material in a concentrated acid environment, then mixing the obtained graphene material with a titanium source, and drying and calcining an obtained mixture to obtain the graphene composite material. The graphene composite material for the cathode of the lithium ion battery, provided by the invention, is high in electric conductivity; an obtained electrode slice is low in resistance and has structural stability in a charge/discharge process; and the prepared lithium ion secondary battery is high in capacity, good in safety, favorable in cyclic performance and long in service life.

The present invention relates to a graphene composite titanium dioxide photocatalyst capable of magnetic separation and recovery, and a preparation method thereof. The photocatalyst is synthesized by a two-step hydrothermal method, wherein graphene and magnetic particles are compounded to prepare magnetic graphene, the magnetic graphene is compounded with titanium dioxide nanoparticles synthesized by a hydrothermal method to prepare the three-element composite photocatalyst. The photocatalyst comprises three parts of the graphene, the titanium dioxide, and the magnetic nanoparticles, wherein the magnetic nanoparticles are loaded on the graphene lamellas to form the magnetic graphene having large specific surface area and magnetism, the rutile type titanium dioxide has a three-dimensional ordered nanostructure, and is loaded on the magnetic graphene lamellas to form the graphene composite rutile type titanium dioxide photocatalyst with the characteristic of magnetic separation, whereinthe photocatalyst has the large specific surface area, the nanoparticles have the magnetism, the photocatalyst can be separated and recovered, and has the efficient catalytic performance.

The invention provides a tungsten trioxide/polyaniline core-shell nanowire array radiochromic film and a preparation method thereof. The preparation method comprises the following steps: dissolving white tungstic acid in aqueous hydrogen peroxide liquor to prepare peroxide tungstate liquor; coating the peroxide tungstate liquor on an electric conductive face of a clean electric conductive substrate; dissolving tungstate in alcohol to form precursor liquor, fixing the electric conductive substrate in a reaction kettle, adding the precursor liquor into the reaction kettle, carrying out a reaction at 150-250 DEG C for 8-16 hours, and taking out and carrying out thermal treatment at 300-450 DEG C for 1-3 hours to obtain a tungsten trioxide nanowire array; and mixing aniline and dilute sulphuric acid to form electrolyte for preparing polyaniline and carrying out electro-polymerization on polyaniline to obtain the tungsten trioxide/polyaniline core-shell nanowire array radiochromic film. The preparation process is convenient to control, lower in preparation cost and easy to realize industrialization. The film has the advantages of large spectrum adjustment range, abundant radiochromic types, high coloring efficiency, fast response speed, long cycle life and the like.

The present invention relates to one kind of nano conducting silver paste and its preparation, and aims at solving the problems of conducting paste with higher conducting stuffing content, high colloid viscosity and unsuitability in connecting through holes in multi-layer circuit board. According to the self-assembling and low temperature welding features of the nano silver particles, the presentinvention prepares nano silver powder via microemulsion process and low-content conducting nano silver particle paste with epoxy resin stuffing component. The paste has high conductivity, low colloidviscosity and thus wide application foreground in fixing electronic elements onto circuit board, connecting electrodes and especially connecting through holes in multi-layer circuit board.

The invention relates to a Cu-Sn-Ti solder and a method for brazing Ti2AlC ceramics and Cu with the same, relating to a Cu-Sn-based solder and a method for brazing Ti2AlC ceramics and Cu with the same and realizing the high-strength and high-conductivity connection of the Ti2AlC ceramics and the Cu. The method comprises the following steps of: respectively grinding, polishing and clearing the Ti2AlC ceramics and the Cu and assembling the Ti2AlC ceramics, the Cu-Sn-Ti solder and the Cu into a brazing assembly unit; and then, brazing in a vacuum brazing furnace. The invention successfully realizes the connection between the Ti2AlC ceramics and the Cu and reaches the joint compression shearing strength of 40.53-187 MPa, the conductivity of 5.13*106-5.997*106 S/m, high joint strength and good electrical conductivity. The Ti2AlC ceramics and Cu connector is used for a carrier friction device and can solve the problems of high cost and shorter service life existing in the carrier friction device in traditional engineering applications.

The invention provides a method for preparing a hetero-atom doped porous carbon material through carbonation of biomass under the assistance of molten salt. The method comprises the following steps: uniformly mixing biomass powder, the molten salt and a hetero-atom doped compound to obtain a product A, wherein the molten salt contains LiCl and KCl, the mass of LiCl accounts for 59 percent of that of the molten salt, and the mass of KCl accounts for 59 percent of that of the molten salt; putting the product A in a pipe furnace; carrying out high-temperature calcination; cleaning with distilled water to remove the molten salt and obtain the final product, namely the hetero-atom doped porous carbon material. The method has the advantages that the biomass is taken as a raw material, and the molten salt containing hetero-atoms is taken as a carbonization medium, so that the hetero-atoms can be introduced into the skeleton of the carbon material during the pyrolysis and carbonization process of the biomass synchronously and controllably, and the hetero-atom in-situ doped porous carbon material is obtained finally. Compared with the conventional doping method, the method provided by the invention have the advantages that the steps are simple; the cost is low; the operation is easy; the reactant purity is high; the application prospect is relatively good.

The present invention relates to a composite conductive fiber with coaxial three-element, and a preparation method thereof. The composite conductive fiber comprises a core layer of polyurethane fiber, an intermediate layer of carbon nano-tube, and an outer layer of intrinsic conducting polymer, wherein the three layers of the composite conductive fiber are coaxial. The preparation method comprises comprises: (1) preparing pretreated polyurethane fiber; (2) immersing the pretreated polyurethane fiber in a organic solvent reaction bath containing the carbon nano-tube to carry out a process to obtain a two-element composite fiber of carbon nano-tube/polyurethane; (3) immersing the two-element composite fiber of carbon nano-tube/polyurethane in a intrinsic conductive polymer monomer solution,then adding an oxidizing agent solution in a dropwise manner, carrying out a washing and drying for the resulting solution after complete reacting to obtain the composite conductive fiber with coaxial three-element. The composite conductive fiber provided by the present invention has advantages of good conductive effect, high elasticity, soft hand feeling, simple preparation technology and low input cost of equipment, and is applicable for large scale production and large scale application.

A transition metal sulfide coated with carbon, a preparation method and an application relate to transition metal sulfide. The transition metal sulfide coated with the carbon comprises a nucleus and a coating layer on the surface of the nucleus, wherein the nucleus is a transition metal sulfide nucleus, and the coating layer is a carbon coating layer. The preparation method comprises the steps as follows: dissolving the transition metal sulfide in water, adding a carbon source, and coating the surface of the transition metal sulfide with carbon. The transition metal sulfide coated with the carbon is applied to preparation of an electrode material, and the electrode material could be a battery electrode material or the like, and is specifically used as an electrode active material to be applied in a secondary battery. The transition metal sulfide coated with the carbon is greatly improved in conductive performance, further improved in charge and discharge capacity and rate capability, greatly improved in coulombic efficiency and cycle performance, and low in material cost and simple in preparation process. The composite material used as an electrode material of a secondary lithium battery has high energy density, excellent cyclicity, and especially excellent rate capability, and is safe and reliable.

The invention discloses an implanted flexible neural electrode based on liquid metal. The implanted flexible neural electrode comprises a liquid metal circuit, which is disposed between flexible polymer thin films in a packaged manner. The flexible polymer thin films are provided with through holes communicated with the liquid metal circuit, and conductive liquid metal packaging agent is disposed in the through holes in a packaged manner, and is polymer thin film forming agent doped with the liquid metal. The completed flexibility of the implanted neural electrode is realized, and a conventional platinum electrode is replaced. The liquid metal has good conductivity, excellent compliance, and special fluidity, and therefore the unique advantages of the liquid metal used for the production of the flexible biological electrodes are provided. Compared with conventional rigid neural electrodes, the implanted flexible neural electrode based on the liquid metal has better biocompatibility.

The invention discloses a titanium-based titanium oxide plate and a manufacturing method thereof. The titanium-based titanium oxide plate comprises a titanium metal plate carrier and a titanium oxide film, wherein the titanium oxide film comprises main components of magneli phase (Ti4O7), titanium black (Ti5O9) and titanium oxide (Ti6O11), wherein the total content of Ti4O7, Ti5O9 and Ti6O11 is not less than 80 percent, and the content of the Ti4O7 is not less than 60 percent. The preparation of the titanium-based titanium oxide plate adopts a sol nano heat reduction technology, and the titanium oxide film is synthesized on situ at the high temperature on a titanium substrate by utilizing the reducibility of the titanium nano particles. The titanium-base titanium oxide plate has good conductivity, good corrosion resistance and good mechanical strength and can be used as an anode light grid of a high-energy lead storage battery, a polar plate of a bipolar battery and a collector body of other relevant chemical power supplies.

The invention provides a nano silver dispersion comprising sulfonate base water dispersible polyester which is a random copolymer with the molecular formula as follows: R1 or R2 independently comprises OCH2CH2, OCH2CH2CH2CH2 or nano silver solution. The invention also provides a jet printing ink comprising the nano silver dispersion.

The invention discloses a phase-change microsphere as well as a preparation method and application thereof. The phase-change microsphere is mainly composed of an aerogel microsphere and a phase-changematerial, wherein the aerogel microsphere has a three-dimensional porous network structure; the phase-change material is uniformly distributed in the three-dimensional porous network structure. The preparation method comprises the following steps: taking the aerogel microsphere as a template; immersing the aerogel microsphere into the molten-state phase-change material; melting and filling, and cooling and curing to obtain the phase-change microsphere. The phase-change microsphere disclosed by the invention has unique electric properties, resistance sudden changes, adjustable resistance, highheat enthalpy and good circulating stability; the phase-change microsphere has high sensitivity on heat when being applied to a hot flow stabilizer; the phase-change microsphere can have the resistance sudden changes by utilizing extremely low heat, so that a circuit is protected; the phase-change microsphere can have excellent heat sensitivity and resistance sudden change performance in high-frequency current, low-frequency current, constant current and alternating current/constant current cross-varying circuits and has a great application prospect.

The invention discloses a high-transmissivity flexible transparent conductive film and a preparation method thereof. The high-transmissivity flexible transparent conductive film is characterized in that a film system of the transparent conductive film is in a multi-film layer structure made of ITO/SiO2/SiO2/substrate material/SiO2/SiO2 or SiO2/ITO/SiO2/SiO2/substrate material/SiO2/SiO2; main materials ITO are In2O3 and SnO2 and metals of In and Sn, wherein the mass percentage of Sn and In elements in the ITO is 78.9-85.4; the mass ratio of the Sn element to the In element is (40-49):(60-51); and the film thickness range is 5-30 nm. The film has firm formation, favorable conductivity and visible light transparency and can be applied to the fields of touch screen liquid crystal display screens, electroluminescent displays, solar batteries, thin film transistors, organic and inorganic semiconductor lasers and heat-insulating and energy-saving glass.

The invention discloses organic electrolyte capable of improving low-temperature performance of a lithium manganese battery. A main salt of a lithium salt is lithium perchlorate, an auxiliary salt of the lithium salt is selected from lithium hexafluorophosphate, lithium tetrafluoroborate, lithium trifluoromethanesulfonate, lithium bis(oxalate) borate,lithium bis(trifluoromethanesulphonyl)imide, lithium bis(fluorosulfonyl)imide, lithium oxalyldifluoroborate and lithium iodide; an organic solvent is a mixed solvent of cyclic esters, linear esters, ethers and sulfones; an additive is selected from an additive A and an additive B, wherein the additive A is selected from benzoic acid, phenylacetic acid, benzoic anhydride, phthalic anhydride, m-phthalic anhydride and terephthalic anhydride, and the additive B is selected from 2,6-di-tert-butyl-4-methylphenol, tert-butylhydroquinone and butylated hydroxyanisole. By adopting the organic electrolyte, the low-temperature discharging performance of the lithium manganese battery can be obviously improved, and the application range of the lithium manganese battery can be effectively enlarged.

The invention discloses a composite bulk material of resin, ferrite and MXenes. Ferrite molecules are dispersed in a laminated structure of the MXenes to form powder particles, and the powder particles are evenly dispersed in the resin to form the bulk material. On the one hand, the composite bulk material has the advantages of the ferrite material and the advantages of the MXenes, has good conductivity, can still keep certain conductivity when the temperature is lower than 260 K, and meanwhile has good impedance matching performance, and therefore the composite bulk material can be applied as a wave-absorbing material, and is especially suitable for being applied to the low-temperature condition; on the other hand, the resin is introduced into the composite bulk material, the powder particles are evenly dispersed in the resin, the composite bulk material is formed and has the advantage of being easy to form and process, and meanwhile, due to the fact that the curing temperature of the resin is lower than the sintering temperature of the powder particles, the problem that the powder particles are easily oxidized at high temperature is effectively solved.