36results about How to "Promote electrode reaction" patented technology

An electrode for redox flow batteries is produced using a carbon catalyst for redox flow battery electrodes, the carbon catalyst being a particulate carbon catalyst and consisting of carbonaceous particles having a specific surface area of 800 to 2000 m2 / g and an average particle size of 100 to 1000 nm.

In a membrane-electrode assembly for polymer electrolyte fuel cells comprising a polymer electrolyte membrane and two gas diffusion electrodes being bonded to the membrane so that the membrane can be between them, at least one catalyst layer constituting the gas diffusion electrodes characterized in that the ion-conductive binder comprises a block copolymer having a particle size of 1 μm or less comprising a polymer block (A) having ion-conductive groups and a polymer block (B) having no ion-conductive group, both polymer blocks phase separate from each other, polymer block (A) forms a continuous phase, and the contact parts of the block copolymer with catalyst particles are comprised of polymer block (A) having ion-conductive groups; a membrane-electrode assembly and a polymer electrolyte fuel cell.

The invention discloses a suspended electrobiological filler for removing ammonia nitrogen from water and a preparation method for the suspended electrobiological filler. The suspended electrobiological filler comprises the following components in percentage by weight: 10 to 20 percent of iron powder, 10 to 20 percent of graphite powder or activated carbon powder, 1 to 2 percent of alumina, 1 to 2 percent of nickel oxide, 1 to 2 percent of titanium oxide, 1 to 2 percent of thallium oxide, 1 to 2 percent of iridium oxide, 20 to 30 percent of molecular sieve material, 5 to 10 percent of adhesive and 20 to 30 percent of hollow glass microspheres. The preparation method comprises the following steps of: mixing the raw materials, putting into a reaction kettle, mixing, stirring uniformly, adding the adhesive and water, preparing paste with the water content of about 20-30 percent, granulating by using a granulator or pressing into granules and blocks in a molding machine, demoulding, feeding into a baking oven, and drying at the temperature of 100 to 180 DEG C for 3 to 4h to obtain the suspended electrobiological filler. The invention also provides application of the suspended electrobiological filler. The suspended electrobiological filler can effectively remove the ammonia nitrogen from the water; and in the upgrading reconstruction of industrial wastewater treatment stations, water works and municipal sewage treatment plants, the removal efficiency of the ammonia nitrogen in the water can be improved by 15 to 40 percent, and the total discharge amount of the ammonia nitrogen and nitrate nitrogen can be controlled.

The invention discloses a method for producing an aluminum-magnesium alloy by using a liquid aluminum cathode method, which can produce high-quality aluminum-magnesium alloy with high efficiency. The content of the method includes: taking high-purity magnesium oxide as raw material, dissolving MgO in an electrolyte system composed of Na3PO3-MgF2-NaCl at an electrolysis temperature of 850-900° C. in an electrolytic cell, using high-purity aluminum ingots The molten aluminum is used as a liquid cathode; high-purity graphite is used as the anode, and under the condition of electrolysis with an anode current density of 0.47-0.52A / cm2, a coil magnetic field with a strength of 30-40mT is applied outside the electrolytic cell to make the molten aluminum rotate. Under the action of electromagnetic stirring, magnesium ions are reduced to elemental magnesium on the rotating aluminum liquid cathode and evenly diffused in the aluminum liquid to form an aluminum-magnesium alloy product, and at the same time, CO2 gas is generated at the anode. The alloy formed by the invention has uniform composition and no inclusions. And the production process is continuous and easy to control.

An electrode for redox flow batteries is produced using a carbon catalyst for redox flow battery electrodes, wherein a ratio of the number of oxygen atoms to the number of carbon atoms (O / C ratio) is 0.05 to 0.20 as measured by surface analysis using X-ray photoelectron spectroscopy.

The invention discloses a lithium ion battery with adoption of secondary electrolyte injection, comprising a positive pole, a negative pole, a diaphragm, an electrolyte and an outer package. In the process of manufacturing the battery, the secondary electrolyte injection is adopted; the electrolyte solvent in the first electrolyte injection is one or a combination of more than one of EC (ethylene carbonate), PC (propylene carbonate), DMC (dimethyl carbonate), DEC (diethyl carbonate), EMC (ethyl methyl carbonate), Gamma-BL (butyrolactone), MF (methyl formate), MA (methyl acetate), EP (ethyl propionate) and THF (tetrahydrofuran) and does not contain acetonitrile and propionitrile; the secondary electrolyte injection is conducted after the formation; and the used electrolyte in the secondary electrolyte injection contains at least one of the acetonitrile and the propionitrile. The electrolyte containing the at least one of the acetonitrile and the propionitrile has the advantage of high normal-temperature conductivity (10-50mS / cm) and low-temperature conductivity (4-20mS / cm at the temperature of -20 DEG C), thereby exceeding the level of an existing electrolyte.