36results about How to "Hinder generation" patented technology

The invention discloses an anti-erosion molybdenum alloy electrode and a manufacturing method thereof. The anti-erosion molybdenum alloy electrode is prepared by means of solid-liquid doping and multi-element ball-milling doping. The recrystallization temperature of the electrode is higher than 1300 DEG C, the microstructure of the electrode is uniform crystal grains, the dimensions of which are 20-70 [mu]m, and the electrode is prepared from the following components in percent by weight: 3-5wt% of ZrO2, 0.8-1.2wt% of Si, 0.1-0.5wt% of B, 0.001-3wt% of GeO2, 0.001-3wt% of SnO2, 0.001-3wt% of Bi2O3, 0-5wt% of W and 0-4wt% of Al2O3 and the balance of Mo and inevitable impurities. By controlling the content of zirconium oxide and the proportion of silicon and boron in a Mo-Si-B alloy reasonably, the alloy has good anti-erosion capacity, high recrystallization temperature and high-temperature behavior and also has good processing capacity. In addition, other targeted microelements are alsodoped in the molybdenum alloy electrode, so that the anti-erosion capacity to different molten glass is improved.

The invention belongs to the technical field of accumulators, and in particular relates to an electrolytic solution for lead-acid accumulators of electric vehicles. The electrolytic solution of the lead-acid battery of the electric vehicle of the present invention is made of the raw materials comprising the following parts by weight: 2-3 parts of sodium carboxymethylcellulose, 0.5-2 parts of succinate, 0.1-0.8 parts of bismuth trioxide, stannous sulfate 0.3-0.7 parts, 32-36 parts of sulfuric acid, 58-65 parts of water. The electrolytic solution of the invention can avoid the early capacity attenuation of the lead-acid battery of the electric vehicle, reduce the water loss in the cycle process, hinder the generation of large-particle lead sulfate, and improve the battery capacity and service life.

The invention discloses an arbutin herbal essence preparation method. The preparation method comprises the steps of raw material preparation, intermediate product A solution preparation, intermediate product B solution preparation, and herbal essence preparation. The invention also discloses an arbutin herbal essence product prepared through the method. The arbutin herbal essence product is prepared by using 3-7wt% of arbutin, 61-65wt% of deionized water, 0.5-1.5wt% of hydroxyethyl cellulose, 2-4wt% of esterified levorotatory vitamin C, 0.05-0.15wt% of citric acid, 8-12wt% of hyaluronic acid, 3-7wt% of a White Mulberry Root-barkextract liquid, 3-7wt% of a licorice root extract liquid, 2-6wt% of olive oil, 3-7wt% of fructus rosae oil, 1-3wt% of vitamin E, 1-3wt% of water soluble azone and 0.3-0.7wt% of a compound antibacterial agent. The arbutin herbal essence matches arbutin with the levorotatory esterified vitamin C, and can reach deep skin moisturizing, whitening and spot weakening effects.

The present invention relates to one kind of gradient Ti / Al2O3 composite material for the intermediate layer of wave impedance flying plate. The gradient composite material is produced through the steps of mixing material, pressure forming, setting the gradient material inside graphite mold and fast plasma discharge sintering. The material contains Ti in 45-69 wt%, alpha-Al2O3 in 30-50 wt%, and Nb in 0.5-5 wt%. In the gradient material, Ti content is decreased gradiently from maximum value to zero, alpha-Al2O3 content is increased from zero to maximum, and Nb content is decreased, with the Ni content in both the top and bottom layers being zero. The composite material of the present invention has tightly combined interface, integral structure, high compactness, wave impedance distribution index of 2-3, capacity of obtaining good quasi-isoentropic compression waveform, excellent weldability and other advantages.

The invention relates to a method for preparing high-concentration silica sol by using superfine silica powder, which is characterized by comprising the following steps of: weighing 20-25 parts by mass of silica powder with the purity of 97-99 percent and the granularity of 500-2000 meshes, and adding 100-200 parts by mass of deionized water to heat at 50-60 DEG C for 10-30 minutes; then adding an aqueous sodium hydroxide solution with the mass percent concentration of 0.16-0.96 percent to the mixed liquid of the silica powder and water under stirring at 70-90 DEG C, and controlling a pH value of the reaction liquid at 8.5-10.0 and the time of whole stirring reaction for 6-8 hours; and then carrying out decompression and suction filtration after standing for 8-12 hours so as to prepare the high-concentration silica sol. The high-concentration silica sol with good property is prepared by using the superfine silica powder scrapped in organic silicon monomer production as raw materials, and the invention has simple process and high practicability.

The invention discloses a preparation method of a lithium dendrite-proof lithium metal battery cathode side interlayer material. Using polyacrylonitrile and carbon nanotubes as raw materials, a CNT@C composite membrane material that prevents lithium dendrites (CNT@C interlayer material, used as a negative electrode for lithium metal batteries) was obtained by preparing membrane liquid, solvent phase inversion, pre-oxidation, and carbonization Side interlayer material), the CNT@C interlayer material with a sponge pore structure and high conductivity is covered on the lithium sheet to protect the negative electrode of the lithium metal battery and prevent lithium dendrites and battery short circuits. at 8mA h cm ‑2 and 8mA cm ‑2 Under the high plating / stripping capacity and current density, the overpotential of Li / CNT@C electrode is about 0.15V after 500h operation. When LiFePO 4 When the full battery is assembled as the positive electrode, the capacity retention rate of the Li / CNT@C battery after 600 cycles is 82.5%, indicating that the CNT@C interlayer material has a better effect on slowing down the growth of lithium dendrites and prolonging the cycle life of the battery.

The invention discloses an electro-tinning additive. Water serves as a solvent, the electro-tinning additive comprises following components including, by concentration, 0.2-20 g / L of 1-phenyl-2-pentanone, 0.2-20 g / L of 1-(3,4-dyhydroxy phenyl)-1-pentanone, 0.2-20 g / L of naphthol ethoxy sulfonic acid, 1-20 g / L of resorcinol, 1-20 g / L of antioxidant and 1-30 g / L of brightener. By means of the electro-tinning additive, generation of bubbles in the electroplating process can be effectively reduced, oxygen dissolving is reduced, and the electroplating effect is guaranteed.