119 results about "Redox Activity" patented technology

The invention discloses a manufacturing method for a redox activity electrolyte based nitrogen-doped graphene supercapacitor, and specifically discloses manufacturing methods for a pseudocapacitance active water system electrolyte, nitrogen-doped porous graphene and a pseudocapacitance active electrolyte system supercapacitor. The capacitive performance of the supercapacitor is greatly improved mainly through the dual-capacitive contribution of electrode materials and the electrolyte. The specific capacity of the supercapacitor is improved by about three times through the pseudocapacitance contribution of the redox activity ingredients in the electrolyte, so that the great improvement potential exists in supercapacitor specific capacity and the energy density.

The present invention provides a method for determining the gender of an unborn child by assaying the overall reducing/oxidizing or redox activity of the maternal urine or other body fluid. The method can be used to determine fetal gender at any time point during the entire pregnancy, the earliest being the first day of a missed menstruation. The body fluid may be processed before assaying. Processing may involve aging the body fluid, or purification of various fractions. The methods of the present invention also provide for a means for pre-conception baby gender planning by assaying the overall redox activity of a non-pregnant female's urine or other body fluid. The overall redox activity of a urine sample correlates with the gender specific compatibility of the ovum being released during a particular menstrual cycle. Therefore, assaying the overall redox activity of a non-pregnant female's urine will help a couple conceive a baby having a desired gender.

The invention provides an oral dosage form for the anti-cancer drug picoplatin comprising a core and a coating, the dosage form being free of redox-active metal salts. The core of the tablet is a substantially dry powder comprising about 10 to 60 wt % picoplatin wherein the picoplatin is a particulate of less than about 10 microns average particle diameter, about 40-80 wt % of a filler comprising a substantially water-soluble, water-dispersible, or water-absorbing carbohydrate, and an effective amount of up to about 5 wt % of a lubricant. The dosage form can further include a dispersant.

The invention is concerned with a method to get Titanium Oxide film with low temperature. Prepare Titanium Oxide sol in Sol-gel method, select titanium isopropylate as precursor, and spread the sol on substrate. Dry the substrate for some time or use it at first hand, heat to 90 to 200 degree with high frequency electric field microwave to form Titanium Oxide film with photo-catalysis activity. For the low heating temperature, the Titanium Oxide film can be prepared on the stuff without thermal stability, such as paper, cloth and plastic, and the film has stronger redox activity. It saves energy and prepared time to enhance the film quality quickly and efficiently. The film has high photocatalytic activity without cap.

The invention discloses the technology of a fuel cell catalyst carrier with high stability suitable for dynamic conditions, and belongs to the technical field of fuel cells. A commercial carbon nanotube with the length of 0.5 to 15mu m and the diameter of 8 to 100nm is pretreated, and then active ingredients are supported on the pretreated carbon nanotube, wherein the content of the active ingredients is 0.5 to 90 percent, and the particle size of the active ingredients is 1 to 3nm. The prepared carbon nanotube-supported platinum catalyst has high stability and redox activity, wherein the stability and the redox activity of the catalyst prepared by taking the carbon nanotube with the length of 0.5 to 2mu m and the diameter of 10 to 20nm as the carrier are highest. The carrier can be applied as a carrier of a catalyst in a proton exchange membrane fuel cell.

The invention discloses an electrochromic assembly, a shell and electronic equipment. The electrochromic assembly comprises: a first flexible substrate and a second flexible substrate which are oppositely arranged; an electrochromic layer which is sealed between the first flexible substrate and the second flexible substrate; the electrochromic layer comprises a flexible polymer base material, an electrochromic active substance, a redox active substance and a conductive agent are arranged in the flexible polymer base material, the side, facing the electrochromic layer, of the first flexible substrate is provided with a first electrode layer, and the side, away from the electrochromic layer, of the first flexible substrate is provided with a first waterproof film layer; the side, facing theelectrochromic layer, of the second flexible substrate is provided with a second electrode layer, and the side, away from the electrochromic layer, of the second flexible substrate is provided with asecond waterproof film layer. According to the electrochromic assembly, electrochromism can be achieved through a single-layer structure, flexible packaging can be easily achieved, color changing response is fast, packaging is reliable, and the electrochromic assembly is suitable for being attached to a shell with a certain curved surface.

The invention relates to a surface modification process of a graphite felt material. Graphite felt is heated under reflux in an absolute ethanol environment, thereby implementing the material surface modification under the condition of low annealing temperature and implementing the in-situ loading process of carbon nanoparticles. The method provided by the invention can effectively enhance the specific area of the felt material, increase the surface reactive spots and improve the surface hydrophilicity of the material. When being applied to the electro-Fenton system, the material can effectively enhance the electrocatalytic redox activity of the material, and effectively enhance the capacity for removing organic pollutants in the electro-Fenton system. The method provided by the invention is simple to operate, has low facility request, and thus, has wide application prospects.

The invention relates to a fuel cell catalyst, and concretely relates to an application of a novel non-noble metal catalyst in fuel cells. The catalyst comprises resorcinol, formaldehyde, a metal salt and 2-(2-pyridyl)-benzimidazole (C12H4N3). A molar ratio of resorcinol to formaldehyde is 1:5-5:1, and a molar ratio of the metal salt (by metal) to 2-(2-pyridyl)benzimidazole is 1:10-10:1. A highly active non-platinum catalyst is prepared through the steps of carbonizing an organogel in 500-1200DEG C inert gas environment to prepare a carbon gel, dipping a metal organic complex (prepared through coordinating the metal salt with 2-(2-pyridyl)benzimidazole), and pyrolyzing in 500-1200DEG C nitridation atmosphere environment. The non-noble metal catalyst has good redox activity and electrochemical stability in a flue cell cathode catalyst as a nonmetal catalyst.

The invention provides an electrochemical CO₂ capture device and methods employing proton-coupled redox active species, e.g., a quinone, phenazine, alloxazine, isoalloxazine, or polyoxometalate, whose protonation and deprotonation can be controlled electrochemically to modify the pH of an aqueous solution or aqueous suspension. This change in pH can be used to sequester and release CO₂. The CO₂ capture device can be used to sequester gaseous CO₂ from a point source, such as flue gas, or from ambient air.

The present invention provides an apparatus for producing water having redox activity. In the apparatus, at least one of oxygen, ozone, chlorine, nitrogen monoxide, and ammonia as a reaction precursor is previously mixed into water or running water while regulating the concentration of the dissolved substance followed by the application of ultrasonic vibrations, whereby active oxygen species are generated in water. In another embodiment, water or running water is brought into contact with a catalyst to which ultrasonic vibrations or electromagnetic waves have been applied, whereby active oxygen species are generated in water.

The invention belongs to the field of modified carbon nanomaterials and discloses a preparation method of a two-dimensional porous boron-nitrogen double-doping carbon nanomaterial and application thereof. The preparation method disclosed by the invention comprises the following steps: taking urea as a structure template, taking 1-butyl-3-methylimidazolium tetrafluoroborate as a pore forming substance and a doping agent, taking glucose as a carbon source, calcining and performing hydrothermal treatment, thereby obtaining the product. The method disclosed by the invention is simple in operation,short in synthesis period, excellent in repeatability, low in cost and convenient for industrial implementation. The porous boron-nitrogen double-doping carbon nanosheets prepared by the method disclosed by the invention have a uniform and porous thin-layer structure and large specific surface area. Meanwhile, due to introduction of boron atoms, the conductivity is enhanced, the redox activity can be enhanced by virtue of doping of the nitrogen, and ay capacitance is improved. When serving as an electrode material of a supercapacitor, the carbon nanomaterial has high electrochemical energy storage activities including high specific capacitance and excellent cycling stability. When charging/discharging current density is 0.1A/g, the highest specific capacitance can reach 550F/g, and the specific capacitance is much higher than that of most of the carbon-based materials.

The invention discloses polymer gel electrolyte modified by functionalized graphene oxide, and a preparation method and application of the same. The functionalized graphene oxide is formed by the connection of a redox active substance with graphene oxide through the intermolecular forces between hydrogen bonds, the chemical bond acting force among ether bonds, ester bonds or amido bonds and the pi-pi stacking intermolecular forces. A multi-stage interlayer structure is a gap structure which is formed among a polyhydroxy high-molecular polymer layer, a redox active substance layer and a graphene oxide layer, and provides a short conveying channel for electrolyte ions. The electrolyte is used for a supercapacitor, has the high ionic conductivity and redox activity, and improves the specific capacitance.

The invention discloses a temperature-sensitive tag and application thereof, and belongs to the technical field of temperature monitoring. The tag comprises an electrochromic electrode, a counter electrode and an electrolyte layer arranged between the electrochromic electrode and the counter electrode. The electrochromic electrode has redox activity and can display different colors at different voltages. The electrolyte layer contains an electrolyte with an ionic conduction function. When applied to cold-chain logistics, the temperature-sensitive tag is pasted on the surface of an article needing temperature monitoring. The temperature-sensitive tag is reliable in recording effect, controllable in temperature response, low in cost and suitable for the cold-chain logistics industry.

The invention discloses a method for rapidly preparing a polymelamine conductive polymer electrode and an application thereof. The melamine conductive polymer electrode can be rapidly prepared under the condition of solid state electrochemical polymerization and by taking melamine as a monomer, water as a solvent, and glassy carbon as a working electrode. A polymelamine conductive polymer film with redox activity is obtained on the surface of the electrode. Cyclic voltammetry testing is carried out on the polymelamine conductive polymer electrode in solutions with different pH to obtain a series of redox peaks, and pH values of the solutions can be detected according to the relationship between the pH value of the solution and the oxidation peak potential value. The method has the advantages of being green, controllable, simple in operation, and the like, can be used for quantitative detection of the pH values in water samples, and is rapid and accurate in detection.

The semi-electroactive material of the invention includes a self-sustained polymer matrix in which is inserted an electroactive system including or made of: at least one electroactive organic compoundcapable of oxidation and/ejecting electrons and cations serving as compensation charges; or at least one electroactive organic compound capable of reduction and/or accepting electrons and cations serving as compensation charges; and ionic charges; and a liquid for solubilizing said semi-electroactive system, wherein said liquid does not solubilize the self-sustained polymer matrix, the latter being selected so as to provide a percolation path for the ionic charges, which results, upon the application of a dielectric current, in oxidation and reduction reactions of said electroactive organic compounds which are necessary for obtaining a colour contrast.

The present invention provides a method for preparing nanoparticles having attached thereto at least one polymer shell, each polymer shell having selected properties. The method comprises attaching an initial monomer to the surface of a nanoparticle; contacting the nanoparticle with the initial monomer attached thereto to a transition metal ring-opening metathesis catalyst to activate the initial monomer; and contacting the nanoparticle with one or Multiple propagating monomers of the formula P-L-N are contacted under effective conditions so that the propagating monomers polymerize into one or more polymer shells. In the formula P-L-N, N is a cyclic olefin-containing group, P is a moiety that imparts selected properties to each polymer shell, and L is a chemical bond or linker. The present invention also provides polymers formed from the polymerization of said propagating monomers. The present invention further provides nanoparticles, initial monomers and propagating monomers of formula P-L-N, wherein P has properties selected from redox activity, optical activity, electrical activity and magnetic activity, and L and N are as defined above. The present invention also provides linking monomers of the formula B-L-N, wherein B is a linking moiety specially linked to an analyte, and L and N are as defined above. Finally, the invention provides methods and kits for detecting or quantifying an analyte.

The present invention relates to a capacitor battery comprising a positive electrode, a negative electrode, and a diaphragm disposed between the positive and negative electrodes and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode material applied on the current collector, and the positive electrode material includes a positive electrode active material, a binder and a conductive agent, wherein the positive electrode active material includes a mixture of carbon and sulfur or sulfide with redox activity. The negative electrode comprises a negative electrode current collector and a negative electrode material applied on the negative electrode current collector, wherein the negative electrode material comprises a negative electrode active material, a conductive agent and a binder, the negative electrode active material is one or more material in the group consisting of a compound of hard carbon, graphite and silicon carbon anda mixture of the compound and lithium, and the electrolyte contains a sulfur-containing additive. According to the above capacitor battery, active components with redox reaction are added in the positive electrode and the electrolyte, the capacitor battery has the advantages of high specific energy, high working voltage, high power output, high safety and low cost, and the invention further provides a preparation method of the capacitor battery.

The invention belongs to the field of new energy, and relates to an aqueous flow battery, in particular to an alkaline aqueous mixed flow battery based on an electroactive phenazine derivative negative electrode. A negative electrode of the alkaline aqueous mixed flow battery is an insoluble phenazine derivative with redox activity, a supporting electrolyte of the negative electrode is strong base, a diaphragm is an ion conductive membrane, a positive electrode active electrolyte is ferrocyanide, and a positive electrode is a carbon-based conductive material. The aqueous mixed flow battery hasthe advantages of low unit cost, long cycle life, high specific capacity, safety, environmental protection and the like, and has a wide application prospect in the fields of large-scale power storageof renewable energy and peak regulation of a power grid.