64results about How to "Stable electrochemical properties" patented technology

The invention discloses high-wettability and high-pourability electrolyte for a power lithium ion battery. The electrolyte comprises a wetting additive, a lithium salt, a non-aqueous organic solvent and other additives, wherein the wetting additive is a nonionic surfactant, and the wetting additive accounts for 0.001 to 5 percent of the mass of the electrolyte; the non-aqueous solvent is one or a mixture of more of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, dimethyl carbonate, diethyl carbonate and gamma-butyrolactone, and the non-aqueous solvent accounts for 50 to 90 percent of the mass of the electrolyte; the lithium salt at the concentration of 0.6 to 1.5 mol / L is at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis(oxalato)borate and lithium trifluoromethanesulfonate; and the other additives accounts for 0.5 to 8 percent of the mass of the electrolyte. The electrolyte has high wettability for a polyolefin diaphragm and electrode active materials, and has long cycle life.

The invention relates to a method for preparing foam metal current collector (substrate) of new type secondary battery that uses zinc as negative pole. It possesses foamy space structure whose space cellular structure in three dimension is composed of metal framework connected eath other. Its surface ingredient includes copper 68%-75% (Wt), zinc 32-25%, that is copper-zinc alloy or foamy brass. The collector (substrate) being as zinc pole has very good performance in electrochemistry and better circular performance. The invention possesses merits of stable characteristic, low cost, simple technique, lower relative density, good electrical conductivity etc. The invention is particularly suitable for zinc-nickel secondary battery, also other zinc based secondary battery and alkaline secondary battery.

The disclosed laser tube includes discharge tube, gas storage tube, water-cooling tube, output mirror, total reflection mirror and electrodes. The said discharge tube, water-cooling tube are installed inside gas storage tube, and the water-cooling tube sheaths the discharge tube. Characters are that the said electrodes are made from titanium or titanium alloy so as to delay change of gas composition in gas storage tube, reduce pollution to total reflection mirror and output mirror, and prolong service life of laser tube. Comparing with prior art, service life of the disclosed laser tube is prolonged at least 3.5 times.

The present invention relates to the field of organic luminescence, in particular to a phosphorescent metal complex containing electroactive radical and an application of the complex in an organic electrophosphorescent device. By utilizing the method of electrochemical deposition, the complex is prepared into a stable, firm film which is used as the luminous layer of the organic electrophosphorescent device. The structural formula of the complex is shown as follows: X is electroactive units; Z is the metal complex serving as a phosphorescence-emitting center; the X and the Z are connected together by a Y chain; m represents the number of the electroactive units. The phosphorescent metal complex containing the electroactive radical, which is prepared by the present invention, is characterized by stable chemical and electrochemical properties and can still stably illuminate after the electrochemical process of repetitive oxidation reduction; the film prepared by electrochemical codeposition is uniform and cannot easily be washed off; the organic electrophosphorescent device prepared with the deposited film shows good device performance and has a wide application prospect.

The invention relates to composite mesoporous silica (IL / SiO2) for encapsulating ionic liquid and preparation and application thereof. The IL / SiO2 is a composition formed from 1-carboxymethyl-3-methylimidazole bis(trifluoromethane)sulfonimide salt (ionic liquid, IL for short) and mesoporous silica, the mesoporous silica is expanded through a pore-expanding agent, and the aperture range is 10-15 nanometers; the IL / SiO2 is applied to all-solid-state polymer electrolyte of a lithium ion battery, and a raw material comprises the following components in parts by weight: 100 parts of carboxylic acrylonitrile butadiene rubber, 2.0-3.0 parts of vulcanizing agents, 20-60 parts of lithium salt and 0.1-30 parts of IL / SiO2. Compared with the prior art, the composite mesoporous silica (IL / SiO2) disclosed by the invention can be used for effectively solubilizing the lithium salt by being applied to a polymer dielectric, thereby providing a lithium ion migration channel. The polymer electrolyte prepared by applying the composite mesoporous silica (IL / SiO2) has the advantages of higher room-temperature conductivity and excellent mechanical properties.

The invention discloses a zinc organic battery and application thereof, and belongs to the field of batteries. The zinc organic battery is provided with a container, a positive active substance, a positive current collector, an organic solvent, a zinc negative electrode and an aqueous electrolyte are contained in the container, the organic solvent and the aqueous electrolyte are not mixed, and thus, the organic solvent and the aqueous electrolyte are layered under a gravity effect due to different density; the positive active substance has oxidization-reduction activity and has two forms of anoxidization state and a reduction state, and the two forms can be reversibly converted by electrochemical reaction; if the positive active substance is in a liquid state and is difficult to dissolvein the aqueous electrolyte, the organic solvent can be omitted, the positive active substance is used as the organic solvent, and the positive active substance and the aqueous electrolyte are layered;and the main ingredient of the zinc negative electrode is zinc, the zinc is immersed in the aqueous electrolyte and is not contacted with the organic solvent, and the aqueous electrolyte is a zinc salt-contained aqueous solution. The battery is long in cycle lifetime, high in safety and low in fabrication cost and can be used as a large-size rechargeable battery, and the application of large-scale energy storage is met.

The invention discloses a nanometer disc electrode making method of more than 500 nm radius, which comprises the following steps: connecting the micron-size diameter carbon fiber or carbon pipe or carbon rod with the copper wire through the aluminum conductive glue; etching through electrochemical method in the alkali solution; fracturing the detected carbon material on the solution and air boundary part to generate nanometer-size point; depositing the electrophoretic insulation layer on the carbon material surface through direct current stabilized power; solidifying the heat insulating layer until the electrode is complete insulated; drying the insulated electrode in the plastic pipe through sealing glue; sanding and buffing or etching by laser; exposing the point of carbon material; appearing the carbon nanometer disc electrode of 'S' shape limit stabilized volt-ampere curve in the potassium chloride of iron cyanidation chemistry solution.

The invention discloses a lithium ion battery composite electrolyte and a lithium ion battery. The lithium ion battery composite electrolyte comprises 50-90 parts by mass of an ionic liquid, 1-10 parts of a film forming additive, and 5-20 parts of a lithium salt. The lithium ion battery prepared through using the lithium ion battery electrolyte has the advantages of high conductivity, good cycle performances, large rate charge and discharge specific capacity, wide use temperature range, and excellent safety.

The invention relates to a preparation method of a renewable electrochemical immunosensor capable of being used for detecting a biomarker for forecasting and diagnosing an acute coronary syndrome, i.e., a soluble CD40 ligand (sCD40L), and belongs to the technical field of electrochemical detection. The preparation method is characterized by comprising the following step: immobilizing an sCD40L antibody through a carboxyl functionalized multi-wall carbon nano tube-polyethyleneimine-gold nanoparticle nano compound (c-MWCNTs-PEI-AuNPs) serving as a substrate material to realize capturing of sCD40L and further quantitatively detecting the sCD40L. A c-MWCNTs-PEI-AuNps nano compound is easy to prepare, high in conductivity, relatively high in stability and relatively large in specific surface area, so that a large quantity of antibodies can be firmly immobilized; furthermore, by the use of specificity identification of the antibodies and antigens, the built electrochemical immunosensor is relatively high in specificity. The electrochemical immunosensor has the advantages of high sensitivity, high specificity, convenience, quickness and capability of being repetitively used for multiple times; a new method is supplied to detection of the sCD40L, and available information is supplied to clinical forecasting and diagnosis of the acute coronary syndrome.

The invention discloses a preparation method of composite solid polymer electrolyte. The method comprises the following steps: (1) heating up a nitrogen carbon precursor to obtain graphite phase carbon nitride g-C3N4 through preparation; (2) mixing the graphite phase carbon nitride g-C3N4 obtained in the step (1), polymer and LiTFSI together, then, adding acetonitrile, stirring until that the system is even, and obtaining mixed liquor; (3) drying the mixed liquor obtained in the step (2) to obtain a self-supported composite solid electrolyte membrane. In the method provided by the invention, the graphite phase carbon nitride is mixed with the polymer, the composite polymer solid electrolyte is prepared through a simple solvent volatilization process, and the composite polymer solid electrolyte is applied to an all-solid-state lithium ion battery. The method provided by the invention has the characteristics of being simple in preparation, being expandable, and using raw materials whichare cheap.

The invention relates to poly (3, 4-ethylenedioxy thiophene) conductive polymer, which is p-type doped polymer prepared by electropolymerization of 3, 4-ethylenedioxy thiophene monomer, adoption of 1-methyl-3-butyl imidazole tetrafluoborate as electrolyte and dopant, and utilization of the potentiostatic method. The structure of the poly (3, 4-ethylenedioxy thiophene) conductive polymer is a porous structure the surface of which is formed by accumulation of a plurality of particles between 800 nanometers and about 2 micrometer. The specific capacitance of the poly (3, 4-ethylenedioxy thiophene) conductive polymer reaches 113 to 158 F / g, and the cyclical stability can reach 70000 times. The invention discloses a method for manufacturing the same.

The invention relates to a novel eutectic solvent for magnesium. The eutectic solvent is prepared through the following steps of: adding choline chloride into an N,N-dimethylformamide solution at the temperature of 20-70 DEG C, and continuously stirring the mixture until the choline chloride is completely dissolved to obtain a mixed solution; and then, adding hydrated magnesium chloride and other metal chlorides into the mixed solution at the temperature of 20-70 DEG C, and continuously stirring the mixture until the hydrated magnesium chloride and other metal chlorides are completely dissolved to obtain the novel eutectic solvent, wherein the addition of the choline chloride is 10-80% of the mass of the N,N-dimethylformamide solution, the addition of the hydrated magnesium chloride is 10-70% of the mass of the mixed solution, and the addition of the other metal chlorides is 5-50% of the mass of the mixed solution. The novel eutectic solvent has the characteristics of stable chemical property at room temperature, stable electrochemical property and strong water affect resistance.

The invention discloses a composite binder for solid-state lithium batteries and a preparation method thereof. The compound binder consists of a high-molecular polymer, lithium salt and an inorganic ceramic fast ion conductor; and the preparation method is to use an organic solvent to dissolve the high-molecular polymer, the lithium salt and the inorganic ceramic fast ion conductor, and generate the organic-inorganic composite binder complexed with the lithium salt and the inorganic fast ion conductor under a certain temperature and stirring. The binder has strong cohesive and adhesive force and high ionic conductivity, and can be used for the preparation of positive and negative pole pieces of solid-state lithium batteries, so that the internal resistance of the pole pieces can be reduced, and the rate performance and cycle life of the solid-state lithium batteries can be enhanced.

Inorganic electrochromic materials and methods of manufacturing utilize a reactive PDC magnetron, where co-sputtering synthesis of electrochromic materials are performed: (1) directly from carbide targets; (2) from relevant transition metals and graphite target, as well as non-metal elements such as Si, Ge, P, B, etc.; (3) directly from composite targets (fine powder mixture of transition metals, non-metal elements and graphite powder). Sputtering may be performed instantly from 1 to 4 targets. For co-sputtering, a combination of gas mixtures may be used: Ar / O2 / N2, Ar / H2 / N2 / O2, Ar / NH3 / O2, Ar / CO / N2 / O2, Ar / CO / H2 / N2 / O2, Ar / CH4 / N2 / O2 and Ar / NH3 / CO / N2 / O2. This allows obtaining electrochromic materials with increased electronic and ionic conductivity, higher coloration and good cycling (lifetime). Moreover, different tints of blue as well as gray, black and brown colors neutral to the eye may be obtained. Sputtered electrochromic films were additionally improved by “thermo-splitting” pre-intercalated thin films. This allows achieving higher coloring and bleaching speed and better lifetime.

The invention relates to a method for preparing magnesium metal through electrolysis by using a novel magnesium deep eutectic solvent. The method comprises the following steps of: heating the deep eutectic solvent to 20-70DEG C, adding an additive of which the mass is 0.3-1.5% of that of the solvent at the temperature, and stirring to obtain a uniform and stable solution; and depositing the solution for 0.5-3.5 hours under the condition that the working electrode is any one of copper, aluminum, silver and nickel sheet electrodes and the constant potential is between -2.4 and -2.9V to obtain magnesium metal or a magnesium alloy. According to the method, an adopted electrodeposition system is simple, good in deposition effect and easy to implement.

The invention discloses a graphene-modified copper foil electrode used for a power battery with a silica-based cathode. The copper foil electrode includes a copper foil base body, and the copper foilbase body is sequentially provided with a graphene buffering layer and an active material layer; the graphene buffering layer is formed on the copper foil base body and forms a flow gathering layer along with the copper foil base body; the active material layer is a silica-based alloy cathode coating layer, and the silica-based alloy cathode coating layer includes compound ingredients including C,Si, GeP5 and GeS, wherein the mass ratio of the compound ingredients including C, Si, GeP5 and GeS is (1-10):(1-10):(1-10):(1-10). The graphene-modified copper foil electrode has the advantages thatthe contact area between the flow gathering layer and the active materials is enlarged, and electronic migration potential barriers and interface internal resistance are reduced; the compatibility andbonding strength between the active materials and flow gathering bodies are enhanced; the physical, chemical and electrochemical properties are stable, and the stability of copper foil under an electrochemical condition and the battery safety are improved.

The invention relates to a preparation method of a renewable electrochemical immunosensor which can be used for predicting and diagnosing a biomarker of acute coronary syndrome, namely a soluble CD40ligand (sCD40L), which belongs to the technical field of electrochemical detection. The method provided by the invention comprises the steps that a carboxyl-functionalized multi-walled carbon nanotube-polyethyleneimine-gold nanoparticle nanocomposite (c-MWCNTs-PEI-AuNPs) is used as a substrate material for immobilizing an sCD40L antibody, so as to capture the sCD40L; and then the sCD40L is quantitatively detected. Since the c-MWCNTs-PEI-AuNPs nanocomposite has the advantages of simple preparation, good electrical conductivity, good stability and large specific surface area, the nanocomposite can firmly immobilize a large number of antibodies and utilizes specific recognition of antibodies and antigens. The constructed electrochemical immunosensor has strong specificity. The method providedby the invention has the advantages of high sensitivity and specificity, convenience, quickness and regenerability, provides a new method for detecting the sCD40L, and provides useful information forclinical prediction and diagnosis of acute coronary syndrome.

The invention provides a tubular porous titanium film-ozone contact reaction device and a water treatment method thereof. The tubular porous titanium film-ozone contact reaction device comprises a cavity, a tubular porous titanium membrane electrode and a counter electrode; the tubular porous titanium membrane electrode is arranged in the center of the cavity, the counter electrode is arranged inthe tubular porous titanium membrane electrode, and a separation material is arranged between the counter electrode and the tubular porous titanium membrane electrode and used for preventing short circuit; a gas inlet and a gas outlet are respectively formed in the bottom and the top of the cavity, and a water inlet and a water outlet are respectively formed in the lower end and the upper end of the tubular porous titanium membrane electrode and are used for enabling wastewater to flow into and out of the tubular porous titanium membrane electrode; in using process of the tubular porous titanium film-ozone contact reaction device, when the tubular porous titanium membrane electrode is used as a cathode, the counter electrode is used as an anode, and when the tubular porous titanium membrane electrode is used as an anode, and the counter electrode is used as a cathode. The tubular porous titanium film-ozone contact reaction device can realize efficient conversion on a membrane electrodeinterface while realizing bubble-free efficient mass transfer of ozone in the whole system; hydroxyl radicals are generated; and the tubular porous titanium film-ozone contact reaction device is usedfor rapid degradation of refractory organic matters.

The invention discloses a graphene composite material with high electrical conductivity. The graphene composite material is prepared from the following components: graphene, carbon nanotubes, conductive carbon black, epoxy resin, hydroxy acrylic resin, a curing agent, aniline, nano silicon powder, FeSO4.7H2O, FeCl3.6H2O, an ethylene-vinyl acetate copolymer, white oil, zirconium hydrogen phosphate,butyl acrylate emulsion, N-methylpyrrolidone, polytetrafluoroethylene, polyvinylidene chloride emulsion, sodium dodecyl sulfonate and additives. The graphene composite material with high electrical conductivity is prepared from a series of materials which have compatibility with the graphene and can improve the electrical conductivity of the graphene composite material, so that the problem that the traditional graphene composite material is low in electrical conductivity is solved.

The invention discloses a cross-linking polymerization method for preparing a solid electrolyte of a polyionic liquid. The method comprises the steps: selecting highly-hydrophobic and small-viscosityionic liquid 1-vinyl-3-methylimidazole bistrifluoromethanesulfimide salt as a monomer, dissolving the monomer in a polyoxyethylene and lithium salt system, adding a cross-linking agent and an initiator, performing stirring and heating at room temperature, performing initiation through free radicals, and performing in-situ polymerization so as to obtain a cross-linked polymerization product. The self-supporting effect of the polyionic liquid in the cross-linking copolymerization system is given play to, the polyionic liquid becomes a flexible electrolyte membrane, and meanwhile based on own conductivity the polyionic liquid, the overall conductivity of the system is improved, so that the obtained membrane is suitable for lithium ion batteries. The electrolyte is a solid polymer electrolyte,the polyionic liquid is a hardly-volatile substance, and has a self-supporting effect, and therefore the mechanical properties of the electrolyte are increased; and meanwhile the application temperature range of the batteries is widened, the conductivity is increased, and cycles of charging and discharging can still be performed stably at high temperatures.

The invention discloses a super capacitor for instruments, and aims to provide the super capacitor for the instruments with advantages of simple structure, easy manufacture, high performance and high capacity. The super capacitor comprises a stainless steel shell; a capacitor monomer or a plurality of capacitor monomers which are mutually connected in series and stacked layer by layer is / are arranged in the stainless steel shell; the capacitor monomer comprises a pair of polar electrodes (3); electrolyte solution and a diaphragm (4) are arranged between the polar electrodes (3); at least one through hole (41) is formed on the diaphragm (4); two ends of the diaphragm (4) are provided with diaphragm resistors (5); and the outsides of the diaphragm resistors (5) are contacted with the polar electrodes (3). The invention can be widely applied in the field of super capacitors.

The invention discloses a silicon / nickel-cobalt-iron photo-anode preparation method, nickel sulfate, cobalt sulfate and ferrous sulfate are dissolved in deionized water to form a uniformly mixed electro-deposition solution, inert gas is used for maintaining the existence of iron elements in the solution in the form of ferrous ions, and in the under-potential deposition process, the content of the ferrous ions in the solution is reduced; divalent nickel-cobalt-iron elements form a compact nickel-cobalt-iron alloy film on the surface of a silicon electrode, a silicon anode is effectively protected to avoid corrosion and passivation, the outermost layer of the nickel-cobalt-iron alloy film is oxidized to generate a complex nickel-cobalt-iron (hydrogen) oxide at the initial stage of photoelectric water decomposition, and the photoelectric water decomposition efficiency is improved. More surface active sites are provided for photoelectrochemical water decomposition to accelerate the photoelectrochemical water decomposition process so as to accelerate the generation of hydrogen, the silicon / nickel-cobalt-iron photo-anode synthesized by the method can be prepared on a large scale in a controllable, repeatable and rapid manner by using the existing electro-deposition equipment in a factory, and the method is suitable for industrial production. And no toxic chemical reagent is added in the whole synthesis process, the conditions are mild, and no pollution is caused.

The invention discloses a method and device for stabilizing heavy metals in sludge by electrically promoting enhanced anaerobic fermentation. According to the method and device for stabilizing heavy metals in the sludge by electrically promoting enhanced anaerobic fermentation, magnetized water, humus, nano-iron and acclimated microbial liquid are stirred and uniformly mixed with municipal dewatered sludge treated by an A2 / O process in an adjusting tank, the water content and pH of the sludge are adjusted, and the uniformly mixed sludge slurry is conveyed to a fermentation tank through a pump;a positive electrode and a negative electrode are arranged in the sludge of the fermentation tank, pulse direct current is introduced into the positive electrode in the fermentation tank in a mannerof continuously applying an electric field; the sludge is subjected to medium-temperature anaerobic fermentation, biogas is collected, heavy metal stabilization is achieved; in the fermentation process, fermentation liquor is periodically discharged, exchangeable heavy metal is discharged from the bottom along with the fermentation liquor, the separation of the heavy metal and the sludge is achieved, and meanwhile the purpose of sludge reduction is achieved. The method increases the contents of heavy metal organic states and residue states in the sludge and has high stabilization efficiency and good stabilization effect; the separation of solid, liquid and gas in a sludge fermentation process is realized, and the biogas generation efficiency is high.

The invention relates to a gold electrode and a preparation method thereof. A method for forming a self-assembly molecular film on the surface of the gold electrode comprises the following steps: mixing a DNA solution with a first thiol solution to obtain a mixed solution containing DNA and thiol; placing the gold electrode into the mixed solution containing DNA and thiol to form an initial self-assembly molecular film on the surface of the gold electrode; and placing the gold surface on which the initial self-assembly molecular film is formed into a second thiol solution to form a self-assembly molecular film on the surface of the gold electrode. The self-assembly molecular film prepared by using the method for forming the self-assembly molecular film on the surface of the gold electrode, provided by the invention, has high packing density, low defect concentration and stable electrochemical properties.

The invention relates to the technical field of supercapacitors, in particular to a preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode, wherein the invention has excellent electron transfer efficiency and ion diffusion efficiency by loading a layer of polycrystalline nickel cobalt hydroxide on the surface of the silver nanowire conductive network through an electrochemical deposition method; Silver nanowires can be used as a fast electron transport channel to improve the charge transfer efficiency between the electrode active material and current collector so that the whole electrode has good conductivity. By means of electrochemical deposition, the active material can uniformly coats the surface of silver nanowires in a certain orientation toform a protective layer on the silver nanowires, thereby improving the electrochemical stability of the silver nanowires, while still maintaining the good mechanical properties of the whole electrodematerial; The silver nanowire / nickel cobalt hydroxide core-shell structure nanocomposite prepared by the invention avoids the problems of conductive agent and binder needed in the traditional supercapacitor.

The invention provides a tubular porous titanium membrane-ozone contact reaction device and its water treatment method, a cavity, a tubular membrane electrode and a counter electrode; the tubular porous titanium membrane electrode is arranged in the center of the cavity, and the counter electrode is arranged in the tubular membrane Inside the electrode, a separation material is provided between the counter electrode and the tubular porous titanium membrane electrode to prevent short circuit; the bottom and top of the cavity are respectively provided with an air inlet and an air outlet, and the lower end and upper end of the tubular porous titanium membrane electrode are They are water inlet and water outlet respectively, which are used to make waste water flow into and out of the tubular porous titanium membrane electrode; when in use, when the tubular porous titanium membrane electrode is used as the cathode, the counter electrode is used as the anode, and when the tubular porous titanium membrane electrode is used as the anode, the opposite electrode is used as the anode. electrode as cathode. The device can realize bubble-free and high-efficiency mass transfer of ozone in the whole system, and at the same time, efficiently transform at the membrane-electrode interface to generate hydroxyl radicals, which are used for the rapid degradation of refractory organic matter.

The present invention relates to a method for synthesizing electrode materials, and more particularly, to a method for synthesizing nanoelectrode materials using an ultra-fast combustion method and to nanoelectrode materials synthesized by the method, wherein the method for synthesizing nanoelectrode materials uses an ultra-fast combustion method to eliminate the necessity of a process for heat-treating reaction products as well as of other additional processes such as cleaning, filtering, and drying processes required for the synthesis of electrode materials, to thereby obtain products in several seconds to several minutes.