34results about How to "Low self-corrosion rate" patented technology

The invention discloses an alkaline electrolytic solution for an aluminum-air battery and an aluminum-air battery. The alkaline electrolytic solution includes a corrosion inhibitor and an alkaline electrolyte solution. The corrosion inhibitor is sodium stannate, potassium citrate, fruit Glucose syrup and potassium fluoride compound. The corrosion inhibitor can effectively reduce the self-corrosion rate of the aluminum plate and the polarization of the aluminum anode, and improve the discharge performance of the aluminum-air battery.

The invention discloses an electrolyte corrosion inhibitor, an electrolyte for aluminum air cell and an aluminum air cell. The electrolyte corrosion inhibitor is an ethanol solution of lavender essential oil, and the volume percentage content of lavender essential oil is 10%-60%. The main components of lavender essential oil comprise linalool, linalyl acetate, eucalyptol, beta-ocimene, 4-terpineol and camphor. Group molecules contain lone pair electrons, oxygen atoms in the groups are absorbed on a metal surface through the lone pair electrons, an insoluble complex layer is formed, thus the metal surface is separated from an aqueous solution, and a corrosion inhibition function is achieved. The electrolyte corrosion inhibitor prepared from lavender essential oil extracted from plants and ethanol is a novel green environmental protection corrosion inhibitor, and has advantages of low cost, low toxicity or no toxicity, no environmental pollution and the like. The electrolyte corrosion inhibitor is added in an electrolyte, a self corrosion rate of an aluminum anode can be lowered remarkably, the electrochemical performance can be raised, and the electrolyte corrosion inhibitor has good economic benefits and environmental benefits.

The invention discloses a manufacture method for anode material of a magnesium air fuel battery, which includes the steps as follows: clean magnesium is prepared; clean magnesium is treated in an alloying way; a grain refiner is added and the alloyed clean magnesium is manufactured into magnesium alloy sticks with thin grains through controlling the cooling speed and the structure of a crystallizer; and the magnesium alloy stick is squeezed into a plate. The grains of the material of the magnesium air fuel battery manufactured by the method provided by the invention are thin, uniform and the chemical components are stable; as the anode material with small grains can enlarge the overpotential of a hydrogen evolution reaction, the self-corrosion rate of the anode material is greatly reducedand the service of the product is improved.

The invention discloses a metal electrode material for a metal-air battery, a preparation method and application thereof. The metal electrode material of the metal-air battery is a magnesium alloy with a loose structure, wherein the alloy elements in the magnesium alloy include at least one of aluminum, zinc, lithium, indium, gallium, and manganese. The preparation method comprises the steps of smelting and alloying magnesium metal and alloy metal, and casting and rolling the magnesium alloy. The metal electrode material of the metal-air battery of the present invention has refined magnesium alloy crystal grains, increases the overpotential of the hydrogen evolution reaction, can destroy the structure of the passivation film, and can alleviate the passivation problem of the magnesium alloy, so as to promote the active dissolution of the electrode and improve the electric capacity of the magnesium alloy. chemical properties. Moreover, the conditions of the preparation method are easy to control, and the prepared metal-air battery metal electrode material has stable performance and high efficiency. The metal-air battery metal electrode material can be used to prepare metal-air battery metal electrodes and metal-air batteries.

The invention belongs to the field of metal materials and relates to an electrode material containing rare earth and magnesium as well as a preparation method for the electrode material. The open-circuit voltage of the alloy material of the electrode material containing rare earth and magnesium is a negative value and the absolute value of the negative value is relatively large. The invention further provides the preparation method for the electrode material. The preparation method is simple in process, low in production cost and suitable for industrial production. The electrode material comprises the following components in percentage by weight: 0.5-0.8% of Sr, 0.03-0.06% of Y, 0.4-0.7% of Sb, 0.5-0.8% of Fe, 1-4% of Ni, 0.07-0.09% of Os and the balancing amount of Mg.

The present invention discloses a rare earth-containing amorphous / nanocrystal aluminum anode composite material, a preparation method and an aluminum air battery, and belongs to the techncial field of air batteries. The aluminum anode composite material comprises, by weight, 0.5-5% of Mg, 0.02-2% of Sn, 0.02-2% of Ga, 0.1-5% of La or Ce, and the balance of Al. According to the present invention, aluminum with the purity of more than or equal to 99.8% is adopted as the base, the trae amounts of Mg, Sn, Ga and the rare earth element La or Ce are added so as to reduce the self-corrosion rate and improve the electrochemical property and the surface dissolution uniformity of the alloy, especially the trae amount of the rare earth element is added to the aluminum alloy, and the addition of the rare earth element to the aluminum has effects of oxygen removing, hydrogen removing, desulfuration, melting rate accelerating, metal burning loss reducing, change of species distribution and refinement modification of iron and other harmful impurities, and the like so as to slow down the self-corrosion of the aluminum alloy, such that the anode utilization rate is improved.

The invention discloses an electrolyte corrosion inhibitor for an aluminum-air cell, an electrolyte and a preparation method, belonging to the technical field of chemical batteries. The electrolyte corrosion inhibitor mainly comprises sodium hyposulfite which has a concentration of 0.005 to 0.2 mol / L in the electrolyte and may further comprise the auxiliary additive sodium stannate which has a concentration of 0.01 to 0.03 mol / L in the electrolyte. The aluminum-air cell provided by the invention has the advantages of simple composition, low cost, safety and accordance with environmental protection requirements, can substantially reduce the hydrogen evolution self-corrosion rate of an aluminum anode, enables the open circuit potential of the aluminum anode and working potential under the condition of impressed current to undergo substantial negative transfer, allows an aluminum anode alloy to have good corrosion resistance and high electrochemical activity and meets the requirement of an alkaline aluminum-air cell for large current density discharging.

The invention discloses an organic composite corrosion inhibitor applicable to coated paper and a size thereof, and belongs to the field of corrosion and protection of metals; the coated paper is prepared from an organic composite corrosion inhibitor by compounding an ionic liquid and an organic non-ionic surfactant according to a weight ratio of 1:(1-10), wherein the organic composite corrosion inhibitor accounts for 0.001-1.0% of the total mass of the size; the size comprises the following components in percentage by mass: 1-10% of PVA (Polyvinyl Acetate), 10-50% of PAM (Polyacrylamide), 1-5% of CMC (Carboxyl Methyl Cellulose), 1-15% of modified starch and the balance of deionized water. According to the organic composite corrosion inhibitor applicable to the coated paper, an imidazoles water soluble ionic liquid is capable of significantly improving electrical conductivity and corrosion inhibition to the zinc; an organic nonionic surfactant is capable of making up the defect that the viscosity of the size is improved through the ionic liquid; a good synergistic effect is achieved by compounding the imidazoles water soluble ionic liquid and the organic nonionic surfactant, so that the corrosion of zinc electrodes can be effectively inhibited; the organic composite corrosion inhibitor is environment-friendly; the size is simple in preparation process; the coated paper is used in zinc-manganese batteries and prepared into green mercury-free batteries; the corrosion of the zinc can be effectively inhibited; the discharging time and storage performance of the batteries can be improved; and the coated paper shows good industrial application prospects.