8 results about "Zincate" patented technology

The present application relates to a kind of nickel-zinc iron ternary oxygen electrode and its preparation method and application, including the following steps: (a) on the conductive substrate, electrodepositing nickel-zinc pre-plating layer is plated;(b) the conductive substrate of the nickel-zinc pre-plating layer of plating is as anode, nickel electrode is as cathode, be placed in the hydroxide aqueous solution containing iron source, under the condition of 70-90 DEG C, anode potential 1.8V~2.2V electrochemical oxidation is carried out.The conductive substrate of the nickel-zinc pre-plating layer of plating is as anode, nickel electrode is as cathode to carry out electrochemical oxidation, so that the metal zinc in pre-plating layer can be anodically dissolved, and soluble zincate ion is generated, so that abundant pore and defect are formed in-situ in electrode interior;Iron ion in electrolyte occurs replacement reaction on dissolved zinc site or exposed nickel site, and is introduced into electrode skeleton;So that more stable, active, and substrate combined firmly Porous ternary nickel-zinc iron composite electrode is finally obtained.

The utility model discloses a diaphragm and a battery, the diaphragm comprises a diaphragm main body and a polytetrafluoroethylene layer arranged on at least one side of the diaphragm main body, and the thickness of the polytetrafluoroethylene layer is 0.01-0.10 mm. In the embodiment, the polytetrafluoroethylene layer is arranged on the diaphragm main body, and the compact structure of the polytetrafluoroethylene layer is distributed on the surface of the diaphragm main body, so that the puncture resistance of the diaphragm main body is enhanced. Therefore, the diffusion of zincate ions can be effectively inhibited, and oxygen generated by the positive electrode during charging can be ensured to smoothly reach the zinc negative electrode for reduction reaction. Besides, due to the arrangement of the polytetrafluoroethylene layer, the diaphragm is endowed with certain hydrophobicity, so that the electrolyte is stably adsorbed in the diaphragm, and the service life of the battery is remarkably prolonged.

The application discloses an anti-corrosion and rust-proof water-proof type anti-cracking agent and a preparation method and application thereof, and belongs to the technical field of concrete admixtures. Raw materials of the anti-cracking agent include the following components in percentage by mass: an anti-corrosion and rust-proof component 5-10%, a water-proof self-healing component 15-20%, an expansion component 50-60%, and a dense component 10-30%; the anti-corrosion and rust-proof component includes (10-20):(80-90) of tetrabutylammonium decatungstate and a cathode type rust inhibitor, and the cathode type rust inhibitor includes at least one of zinc phosphate, zinc acetate and calcium zincate. The specific anti-corrosion and rust-proof component tetrabutylammonium decatungstate, zinc phosphate and calcium zincate of the application has excellent anti-corrosion and rust-proof effect; in addition, the anti-corrosion and rust-proof component used in the application can activate the water-proof self-healing component and has a promoting effect on the water-proof self-healing component while improving the anti-corrosion and rust-proof performance, and can significantly improve the secondary impermeability of concrete in cooperation with the water-proof self-healing component.

This invention discloses a water-based treatment agent for improving the corrosion resistance of carbon steel surfaces, comprising the following active ingredients: a compound containing zincate ions, wherein the molar concentration of zincate ions is 0.02–0.6 mol / L; a nonionic polyol surfactant, the content of which is 0.05–0.8 mol / L based on the molar concentration of hydroxyl groups; a metal ion compound, wherein the molar concentration of metal ions is 0.003–0.1 mol / L; the standard electrode potential of the metal ions is in the range of -0.28V to +0.42V; and an inorganic alkali, the content of which is 0.001–0.1 mol / L based on the molar concentration of hydroxide ions. This invention also discloses a carbon steel substrate comprising a carbon steel substrate and a nanoscale coating formed by coating or depositing the aforementioned water-based treatment agent on the surface of the carbon steel substrate.

The application provides a surface treatment method of a titanium alloy 3D printed part, and belongs to the technical field of surface treatment of 3D printed parts. The method comprises the following steps: sequentially performing first treatment and chemical polishing on the titanium alloy 3D printed part to obtain the printed part after surface treatment; the first treatment comprises sequentially performing chemical corrosion and micro-arc oxidation; the micro-arc oxidation adopts an electrolyte comprising the following concentration components: one or more of alkali metal hydroxide 1.5-50 g / L and zincate 0.5-8 g / L, phosphate 0.2-15 g / L and aluminate 0.5-5 g / L. The surface treatment method of the titanium alloy 3D printed part provided by the application can reduce the surface roughness of the titanium alloy 3D printed part.

The invention belongs to the technical field of trailer part treatment processes, and particularly relates to a trailer part surface enhanced galvanization treatment process which comprises the following steps: performing laser texturing on a trailer ball base body to form a regular micron-sized pit array; preparing a molybdenum or molybdenum alloy transition layer on the surface by adopting an electric spark deposition technology; in a zincate plating solution containing nano-diamond particles modified by a silane coupling agent, depositing a Zn-nano-diamond composite coating on the transition layer by adopting a bidirectional pulse electroplating method; micro-arc oxidation treatment is carried out in a silicate electrolyte, and a layer of zinc oxide ceramic membrane is generated on the surface; carrying out vacuum impregnation hole sealing treatment on the workpiece subjected to micro-arc oxidation by adopting a hole sealing agent containing a pH response type microcapsule; through multi-technology fusion, a gradient composite coating with excellent bonding strength, limit wear resistance, long-acting corrosion resistance and an intelligent self-repairing function is formed on the surface of the hitch ball, the service life of the hitch ball under the extreme working condition is remarkably prolonged, the reliability of the hitch ball under the extreme working condition is remarkably improved, and the whole process is environmentally friendly.

This invention discloses a method for suppressing water migration in a zinc-iron flow battery by adjusting the volume ratio of the positive and negative electrolytes, belonging to the field of flow battery technology. The positive electrolyte of the zinc-iron flow battery is an alkaline solution of iron cyanide complex ions, and the negative electrolyte is an alkaline solution of zincate ions. The volume ratio of the positive to negative electrolyte is 0.5-5:1; preferably 1-4:1; more preferably 2-4:1. The alkalinity of both the positive and negative electrolytes is 0.05-5 mol / L. This invention can effectively suppress water migration during the operation of the zinc-iron flow battery, improve its lifespan, and reduce maintenance costs during battery operation.

The invention discloses a method for controlling and blocking growth of zinc dendrites based on ion supply and a high-stability nickel-zinc battery constructed based on the method. Specifically, in an alkaline zinc electrochemical system, a composite electrolyte system with a gel layer-electrolyte membrane layer-gel layer sandwich structure is constructed. In a composite electrolyte system, the gel layers on the two sides provide electrolyte maintenance and interface stability, and the middle electrolyte membrane layer forms a barrier layer for polyhydroxy anions such as zincate radicals and the like, so that an ion migration path is regulated and controlled in a battery operation process, and the penetration risk of metal zinc deposition to the diaphragm is blocked. The positive electrode material can be matched with a nickel-cobalt layered double hydroxide positive electrode material which is doped with high-charge-density metal ions and is regulated and controlled by a Co / Ni ratio for use, a constructed nickel-zinc battery can be recycled for more than 3000 times under high current density (5A. G <-1 >), the capacity retention ratio exceeds 75%, and diaphragm puncture failure caused by dendritic crystals does not occur in a long-term operation process.