54results about How to "Polarization current density is small" patented technology

The invention discloses an electrode pole plate of a lithium ion battery. The electrode pole plate comprises a current collector and active substance coating layers, wherein the active substance coating layers are uniformly coated at two sides of the current collector, and grooves are symmetrically and uniformly formed in surfaces of the active substance coating layers at two sides. A thick pole plate with specially-shaped grooves in a surface are prepared, the electrolyte retention quantity in the battery can be remarkably increased, and long-term recycle of the battery is promoted; moreover, the specially-shaped grooves are uniformly formed in the surface of the thick pole plate, electrolyte penetration and diffusion are facilitated, and the rate charge-discharge electrochemical performance of the battery is improved; and meanwhile, the specially-shaped grooves are uniformly formed in the surface of the thick pole plate, thus, the specific area of the pole plate is expanded, the polarization current density of the battery during the charge-discharge process is reduced, a lithium precipitation risk of a large-current charging positive electrode separator is improved, and the application safety of the battery is improved.

The invention discloses metal surface silane treating agent. The treating agent is characterized by preparing mixed liquid by the following components, and the weight parts (g) of all components in each liter of mixed liquid are as follows: 35 to 45 parts of 3-glycidyl ether oxygroup propyl trimethoxy silane, 35 to 45 parts of vinyl tri(beta-methoxyl ethyoxyl)silane, 100 to 180 parts of aqueous nano-zinc oxide materials, 4 to 5 parts of 2-methyl-1, 3-propylene glycol, 2 to 4 parts of polyethylene glycol, 2 to 2.5 parts of zirconium fluoride, 2 to 3 parts of dimethyl sulfoxide, 1 to 2 parts of urea, 0.3 to 0.6 part of benzotriazole, 0.3 to 0.5 part of monoammonium phosphate and the rest amount of water. The treating agent has the advantages that after the metal is treated by the surface silane treating agent, a silane coating layer formed on the metal surface has excellent corrosion resistance, and the service life of the metal is prolonged; and as propyl trimethoxy silane is combined with aminopropyl triethoxy silane for use, the compact and firm coating layer can be formed on the metal surface.

The invention discloses a metal surface silane treating agent containing plant ash. The metal surface silane treating agent is characterized by being a mixture solution prepared from the following ingredients in parts by weight (gram) in each liter of the mixture: 32-40 parts of vinyl triethoxysilane, 33-48 parts of aminopropyl triethoxy silane, 120-170 parts of aqueous nano-zinc oxide, 2-3 parts of 1,4-cyclohexanedimethanol, 1-2 parts of ethylene glycol butyl ether, 2-3 parts of sodium tripolyphosphate, 2-4 parts of propylene glycol, 2-3 parts of zirconium tetrafluoride, 2-3 parts of ammonium molybdate, 2-3 parts of sodium carbonate, 1-2 parts of diethylene glycol butyl ether, 1-2 parts of boric acid, 0.3-0.5 parts of diethyl toluenediamine and the balance of water. The aqueous nano-zinc oxide prepared by using the process provided by the invention has high dispersion stability and efficient adhesiveness, and is uniformly distributed on the surface of a metal, so that the metal has high compactness and anti-ion permeability; and due to the added assistant such as the zirconium tetrafluoride and the like, the compactness of a silane absorbing film is increased, the filming quality is improved, the film layer has the characteristics of being strong in adhesion capability, free of cavity and rift, compact and uniform and small in polarization current density, and the production process is environmental-friendly and pollution-free.

The invention provides a protecting-treating technology for a metal surface. The protecting technology comprises the following steps: firstly, performing conventional degreasing on a metal piece for one time; performing water washing for two times; performing sanding; performing degreasing and water washing again; coating silane solution; and coating after curing, thereby finishing the protecting technology. After the metal piece is treated according to the protecting technology, a poly-acid film layer is formed on the surface of the metal piece; the film layer is compact and uniform, is strong in adhesive force with metal body and is difficult to drop; the protecting efficiency on metal is increased; and meanwhile, the operating process is environment-friendly and pollution-free.

The invention discloses a metal surface silicane treating agent containing diethanol amine. The metal surface silicane treating agent containing the diethanol amine is characterized by being a mixed solution which is prepared from following compositions of, by weight part ratio in every liter of the mixed solution, 28-35 parts of 1,2-bis (triethoxy silicon) ethane, 32-40 parts of gamma-aminopropyl triethoxy silicane, 100-160 parts of aqueous nanometer zinc oxide material, 2-3 parts of allyl alcohol, 1-2 parts of ethylene glycol, 2-3 parts of sodium tripolyphosphate, 2-4 parts of propylene glycol, 2-3 parts of zirconium tetrafluoride, 2-3 parts of diethanol amine, 2-3 parts of ammonium chloride, 1-2 parts of diethylene glycol monobutyl ether, 1-2 parts of trimethylolpropane, 0.3-0.5 part of sodium dodecyl benzene sulfonate, and the balance water. The metal surface silicane treating agent containing the diethanol amine has the advantages that, a silicane coating formed on the surface of metal after the metal is processed by using the surface silicane treating agent has good decay resistance, service life of the metal is prolonged, and a compact and firm coating is formed on the surface of the metal by combining the 1,2-bis (triethoxy silicon) ethane and the gamma-aminopropyl triethoxy silicane for use.

The invention discloses a surface silanization protection treatment agent for hard aluminum alloy. The surface silanization protection treatment agent is prepared from the following ingredients in weight (gram) in every 500g of mixture liquid: 1-2g of monoethanolamine benzoate, 3-5g of guar gum, 3-5g of rosin, 1-2g of trihydroxyethyl isocyanurate, 10-12g of maleic anhydride, 4-6g of diethylene glycol butyl ether, 5-8g of propylene glycol, 3-5g of butane diacid, 8-12g of vinyl triethoxysilane and the balance of deionized water. According to the surface silanization protection treatment agent, rosin serving as a reaction raw material is polymerized with raw materials, such as maleic anhydride and silane, and then, a strong protecting film can be formed on the surface of metal; and the corrosion resistance of metallic matrixes is enhanced.