31results about How to "Reduce self-corrosion" patented technology

The invention discloses a magnesium alloy, a sacrificial anode device and a potential anti-corrosion device for an oil casing, comprising 68 to 69.5 wt % of magnesium, 17 to 19 wt % of manganese, 9 to 10.5 wt % of calcium, 2.5 to 3.7 wt % % by weight of boron, 1.5 to 2.8% by weight of tin, and the rest are magnesium and impurities generated in the preparation process; the magnesium alloy electrode in the present invention has lower potential, more stable voltage, larger capacitance, more sufficient current, and energy It has the characteristics of higher density, stronger discharge activity, higher current efficiency, stronger electrochemical action, higher specific strength and specific stiffness, and better corrosion resistance; it achieves the purpose of high efficiency, durability and environmental protection, and achieves the price Low cost, reliable performance and cost-effective requirements.

The invention discloses a method for preparing modified zinc oxide. The modified zinc oxide is prepared by coating bismuth oxide on zinc oxide; according to the weight percentage, the contents of the bismuth oxide is 5-25 percent and the zinc oxide is 75-95 percent; and one of sodium hydroxide or potassium hydroxide is mixed with zinc oxide and bismuth nitrate, the mixture is ball-milled to prepare a precursor of a Bi(OH)3-coated ZnO, and then the thermal decomposition is carried out to the precursor in the high temperature environment to obtain the bismuth oxide coated modified zinc oxide. The prepared modified zinc oxide as the anode material of a secondary zinc electrode has the advantages of low price, environmental protection, less investment, good electric conductivity, high charge acceptance, high specific capacity, long cycle life and the like.

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 a comprehensive energy power generation system, and the system comprises a first controller, a second controller, a clean energy power generation subsystem, an energy storage subsystem, a metal air battery subsystem and a load. The clean energy power generation subsystem, the energy storage subsystem and the load are sequentially connected, and the load is also connected with the metal air battery subsystem. The first controller is used for controlling the clean energy power generation subsystem to generate power and storing the electric energy in the energy storage subsystem. The second controller is used for controlling the energy storage subsystem to supply power to the load, and the metal air battery subsystem is used for supplying power to the load when the voltage of the energy storage subsystem is insufficient. The metal air battery subsystem is used as a standby battery to assist the clean energy power generation subsystem to generate power, and can guarantee the output of the stable voltage and current for the load.

The invention discloses a porous zinc-tin alloy negative electrode material for a zinc-air battery and a preparation method of the porous zinc-tin alloy negative electrode material, belonging to the field of new energy technology development. The porous zinc-tin alloy negative material comprises a foamed nickel substrate and a zinc-tin alloy plating layer, wherein the zinc-tin alloy plating layer is uniformly coated on the foamed nickel substrate, tin and zinc in the zinc-tin alloy plating layer are uniformly distributed, and the mole ratio of tin to zinc is (0.01-0.20):1. In the porous zinc-tin alloy negative electrode material, foamed nickel is taken as a negative electrode, electroplating is carried out in an electroplating liquid containing a complexing agent to obtain the porous zinc-tin alloy negative electrode material, and the electroplating liquid containing the complexing agent is selected from one of a pyrophosphate system electroplating liquid, a gluconate system electroplating liquid, a citrate system electroplating liquid and a tartaric acid system electroplating liquid. The porous zinc-tin alloy negative electrode material has the advantages that the material structure is reasonable in design, the preparation process is simple, and industrial application and production at a large scale are promoted.

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.

This invention relates to a Mg dry battery with Mg alloy as the anode material in which, Mg is the main component is Mg alloy and the key point is that the said alloy also includes metal A which is either alkal; metal, alkali earth metal or or rare earth metal or any combination for thee materials. The thickness of the passive film can be controlled, voltage delay time can be controlled, the Mg electrode is seldom corroded and the said Mg alloy does not includes Hg and Cd.

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.