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

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 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 aluminum air battery aluminum anode slurry for 3D printing and a preparation method and application thereof. The slurry comprises metal mixed powder and slurry, the ratio of the metal mixed powder to the slurry is 1g:(0.3-1.2) mL, the slurry comprises an antioxidant, a dispersing agent, an organic solvent and an organic adhesive, the metal mixed powder comprises Sn, In, Mg and the balance Al with the purity larger than or equal to 99.99%, and the metal mixed powder comprises Al with the purity larger than or equal to 99.99%. The viscosity of the slurry is 1-100 Pa.s; and the preparation method of the slurry comprises the following steps: (1) taking metal powder, and mixing and ball-milling the metal powder and absolute ethyl alcohol; (2) drying the ball-milled mixed solution until the alcohol is completely volatilized to obtain dried metal mixed powder; and (3) adding an antioxidant, a dispersing agent, an organic solvent and an organic adhesive into the dried metal mixed powder for ball milling, and obtaining slurry. The slurry can be applied to an aluminum anode of a 3D printing aluminum air battery. The slurry can increase the porosity of the anode, reduces the self-corrosion of the aluminum anode, is stable in performance, and improves the utilization rate of the anode.

The invention provides an aluminum alloy anode material for a seawater battery and a preparation method. The electrochemical performance of an aluminum alloy in a seawater medium is improved through amicroalloying method. According to the preparation method, firstly, activating elements Ga, Bi, Cd and Pb are added to promote an oxidation film layer on the surface of the aluminum alloy to be dissolved and strip off, the potential of an anode is remarkably and negatively moved, and the activation performance of the anode is improved; secondly, elements Sn, Zn and Mn with the high hydrogen evolution potential are added, the hydrogen evolution overpotential of the aluminum alloy is increased to some extent, the probability of hydrogen evolution corrosion of the anode is reduced, and accordingly, the current efficiency of the anode is improved; and finally, by controlling the contents of impurity elements Fe and Cu in an aluminum ingot, self-corrosion of the aluminum alloy anode is reduced, and the dissolution morphology of the aluminum alloy anode is improved. In the preparation process of the anode, by controlling the feeding sequence and technological parameters of all the components, the anode material has the negative working potential, high activity and low self-corrosion rate in the seawater medium, and the driving potential and current efficiency of the aluminum-seawater battery can be effectively improved.

The invention relates to a corrosion-resistant and high-temperature-resistant sacrificial anode material and a preparation method thereof. The material comprises the following components of, in percentage by mass, 4%-6% of Zn, 0.035%-0.05% of In, 0.04%-0.1% of Sn, 0.3%-1.0% of Mg, 0.01%-0.02% of La, 0.01%-0.02% of Y, 0.01%-0.02% of Nd, less than or equal to 0.26% of impurities and the balance Al.During preparation, electrolytic primary aluminum is molten into an aluminum alloy solution, then blowing, refining, degassing, slag pulling out are conducted, Zn, In, Sn and Mg are added, smelting isconducted at 760-800 DEG C, and then cooling is conducted; heating is conducted to achieve 800-820 DEG C, an Al-La intermediate alloy, an Al-Y intermediate alloy and an Al-Nd intermediate alloy are added, and refining, degassing and slag pulling out are conducted at 840-860 DEG C; and finally, heat preservation is conducted at 700-720 DEG C for 60-80 minutes, and then cooling is conducted to achieve the room temperature.

The invention belongs to a sacrificial anode protection material of a reinforced concrete structure, in particular, a zinc alloy sacrificial anode material for a reinforced concrete structure in a chlorine salt erosion environment. In order to solve problems in a sacrificial anode material in the prior art, the following technical schemes of the invention are adopted, the sacrificial anode material of the invention comprises the following components in percentage by mass: 0.5% of Al; 0.1% of Cd; 0.18%-0.36% of La; 0.42%-0.84% of Ce; 0 to 0.1% of impurities; and the balance of Zn. The zinc alloy sacrificial anode material provided by the invention has the advantages of good activation performance, uniform corrosion, good corrosion resistance and long service life, and meets the use requirements of reinforced concrete. The zinc alloy sacrificial anode material is excellent in electrochemical performance, and the current efficiency reaches about 95%. The surface corrosion product of the zinc alloy sacrificial anode material is likely to shed.

The invention discloses a rotational flow efficiency-improving, anticorrosion and abrasion-resisting integrated lifting technology and a mechanical extraction system. The rotational flow efficiency-improving, anticorrosion and abrasion-resisting integrated lifting technology comprises the following steps that S1, before entering a well, a drift diameter gauge is used for inspecting the drift diameter of oil pipes one by one, it is inspected that a pump cylinder is in a perfect condition, and a structure of the downhole part is installed; S2, a machine is shut down, a brake is tensioned, a locking device is rocked down, power off is carried out, a warning board is suspended, and other structures are installed; S3, according to measurement data of an indicator diagram instrument, parametersare adjusted, and stratum feed flow is enabled to be matched with the oil well pump displacement; S4, the erosion prevention distance is adjusted, and oil pumping is started; and S5, pump inspection operation is carried out. According to the rotational flow efficiency-improving, anticorrosion and abrasion-resisting integrated lifting technology and the mechanical extraction system, well repair without the operation of lifting oil pipes and oil pumping rods is realized, the operating cost and time are saved, ground oil liquid pollution and pipe consumption are reduced, the pump inspection efficiency is improved, the service life of a whole well is prolonged, and the overall efficiency is improved.

The invention provides an anti-self-corrosion metal-air battery as well as a preparation method and application thereof, and belongs to the field of air batteries. According to the self-corrosion-resistant metal-air battery provided by the invention, a metal-air battery structure is reconstructed; and the metal-air battery which can be filled with oil when the metal-air battery is in a standby state and filled with electrolyte when the metal-air battery works so as to realize oil-water separation is designed. During the standby period of the metal-air battery, the metal-air battery system is filled with the oil to replace an electrolyte solution, so that the self-corrosion of a metal anode during the standby period is greatly reduced. Data of the embodiment show that the open-circuit voltage of the anti-self-corrosion metal-air battery provided by the invention is 1.8-2.0 V, and the working voltage of the anti-self-corrosion metal-air battery is 1.3-1.7 V. Compared with the performanceof conventional anti-self-corrosion metal-air battery, the specific capacity and the specific energy of the anti-self-corrosion metal-air battery are improved by 2-3 times, and the monthly self-discharge rate of the anode of the anti-self-corrosion metal-air battery is 0.02-0.04%/month.

The invention discloses an aluminum alloy anode material for batteries. The aluminum alloy anode material is prepared from the following components in percentage by mass: 0.001-1% of lanthanum, 0.001-1% of gallium, 0.001-1% of magnesium, 0.001-1% of indium and the balance of aluminum. The invention further provides a preparation method of the aluminum alloy anode material for batteries. According to the preparation method, three types of different thermal treatment processes such as high temperature and long time, medium temperature and short time and low temperature and long time are matched with a deformation process, and optimal regulation and control on material components, texture structures and alloy phase of the aluminum alloy anode material are achieved. The addition of alloy elements is appropriately adjusted, and with the combination of appropriate plastic formation processes and thermal treatment processes of the aluminum alloy anode material, optimal matching of multiple elements can be achieved, and requirements of power source discharge can be met under a large current density of 500mA/cm<2>/1000mA/cm<2>. The aluminum alloy anode material disclosed by the invention is short in production process procedure, easy in process parameter control, good in aluminum alloy anode product quality, low in production cost and beneficial to on-scale production.

The invention relates to the technical field of aluminum air batteries, and discloses a large aluminum air battery pressurizing and drying system. The system is arranged based on a battery pack and comprises a plurality of single batteries, a bipolar plate, a dehumidifier, a fresh air device, an electrolyte tank, an electrolyte pipeline and an air pipeline, a liquid inlet of the battery pack is communicated with an electrolyte tank through the electrolyte pipeline and a liquid supplementing pipe, the liquid supplementing pipe is connected with the air pipeline through an electric control three-way valve A, and an electrolyte pump is mounted on the liquid supplementing pipe; a liquid outlet of the battery pack is connected with the electrolyte tank through an electrolyte pipeline liquid return pipe, and the liquid return pipe is connected with the air pipeline through an electric control three-way valve B; an air inlet and an air outlet of the bipolar plate are covered by an air hood; the two ends of the air hood are respectively connected with the air pipeline through an electric control three-way valve C and an electric control three-way valve D; and the air pipeline is sequentially connected with the fresh air device and the dehumidifier. The self-corrosion problem of the aluminum anode is solved, and meanwhile the air electrode pressurization problem and the electrolyte temperature control problem are solved.

The invention discloses a primary alkaline battery cathode material which comprises the following components in parts by weight: 90-98 parts of zinc, 1-7 parts of gel agent, and rare earth oxide less than 0.1% of zinc, wherein 0.9-0.98 parts of zinc and the rare earth oxide form a core-shell nanomaterial; and the rest of zinc is a nanoscale material. The invention further discloses a preparation method of the primary alkaline battery cathode material. The preparation method comprises the steps of preparing a rare earth oxide @ zinc core-shell nanomaterial by a sol-gel method, mixing and dryly stirring the rare earth oxide @ zinc core-shell nanomaterial, zinc powder and the gel agent, adding an electrolyte, performing mixing and wet stirring, and finally performing defoaming treatment to prepare the primary alkaline battery cathode material. The primary alkaline battery cathode material has the benefits that the rare earth oxide @ zinc core-shell nanomaterial is used, so that a hydrogen evolution potential of zinc gel of a cathode is increased; a self-corrosion effect of the cathode is reduced; the leakage resistance is improved; and the service life of a battery is prolonged.