366results about "Electrolytic inorganic material coating" patented technology

The invention discloses a preparation method of a rare earth element doped nickel-based selenide nano-material and application of the rare earth element doped nickel-based selenide nano-material in electro-catalysis water full-hydrolysis reaction. According to the method, nickel salt, cerium salt, selenium dioxide and potassium chloride are prepared into electrolyte, and the electrolyte is subjected to electro-deposition on a foamed nickel substrate to obtain Ce-doped Ni0.85Se nanoparticles growing on foamed nickel. The crystal structure and electron distribution of Ni0.85Se are optimized by doping trace rare earth element cerium, so that the HER and OER performances of the Ni0.85Se are greatly improved. The prepared catalyst is self-supporting closely-packed nanoparticles, the formed amorphous structure is easy to expose more active sites, the catalyst has good electrocatalytic hydrogen evolution and oxygen evolution performance under alkaline conditions, the overpotential in electrocatalysis of nickel-based selenide is greatly reduced, and the electrocatalytic performance of nickel-based selenide is improved. And excellent electro-catalytic activity is shown in electro-catalytic water full hydrolysis. And the self-supporting electrode is not easy to fall off due to generation of bubbles in the reaction process, so that the working stability of the catalyst is improved.

The invention relates to the technical field of titanium-steel composite plates, and particularly discloses a high-thermal-conductivity titanium-steel cold-rolled composite plate and a preparation method thereof.The preparation method comprises the steps that plasma etching treatment is conducted on a titanium plate, a TiB2-graphene heat conduction layer is arranged on the etched surface in a laser cladding mode, and an aluminum oxide whisker layer is deposited on a stainless steel plate through plasma electrolysis; the preparation method comprises the following steps: spraying nano-copper slurry on the surface of aluminum oxide whiskers, curing, carrying out composite rolling on a modified titanium plate and a stainless steel plate, and carrying out annealing and tempering treatment after rolling to obtain the high-thermal-conductivity titanium steel cold-rolled composite plate.

The invention discloses a rare earth element doped stainless steel oxygen evolution electrode and a preparation method thereof, and belongs to the technical field of electrode preparation. The preparation method of the stainless steel oxygen evolution electrode comprises the steps that stainless steel with impurities removed serves as an anode and is placed in an alkaline solution with the concentration being 7-12 mol / L, cyclic voltammetry is adopted, stainless steel treated through cyclic voltammetry is obtained, and the potential window is-0.3 V to 1.5 V; the stainless steel is placed in an alkaline solution with the concentration being 1-2 mol / L and serves as an anode for electrolysis, and anodic oxidation stainless steel is obtained; the anodic oxidation stainless steel is placed in a cerium ion solution, a cyclic voltammetry method is adopted, the stainless steel serves as an anode to be treated, and a stainless steel oxygen evolution electrode is obtained through electro-deposition; wherein the potential window is-1.5 V to 1.0 V (+ / -0.5 V). The preparation method is simple, the cost is low, large-scale preparation is easy, long-time, high-temperature and other complex preparation processes are not needed, and when the electrode is used as an electrode for electrolyzing oxygen evolution in water, the electrode has excellent catalytic activity and shows huge application prospects in large-scale industrial hydrogen production through water electrolysis.

The invention discloses a high-temperature-corrosion-resistant stainless steel gas distribution disc and a preparation method thereof, and relates to the technical field of stainless steel machining, stainless steel is subjected to micro-arc oxidation treatment, the high temperature resistance and wear resistance of the surface of the stainless steel are improved, but the corrosion resistance of the stainless steel subjected to micropore treatment needs to be improved. Stainless steel subjected to micro-arc oxidation treatment is subjected to titanium dioxide layer plating treatment, micro-arc oxidation holes provide additional anchoring points, titanium dioxide layer plating treatment is carried out on the basis, the corrosion resistance of the stainless steel is improved, micro-arc oxidation treatment is firstly carried out on the surface of the stainless steel, then titanium dioxide is plated on the surface of the stainless steel, and the corrosion resistance of the stainless steel is improved. And the binding force between the titanium dioxide layer and the stainless steel substrate can be obviously improved. The graphene oxide-titanium dioxide composite sol is added into the electroplating solution, invasion of corrosive media is effectively blocked, the diffusion path of the corrosive media is prolonged through the graphene sheet layer, and the corrosion resistance of the stainless steel is further improved.

The invention discloses a Ce-doped CoP / NiCoP-coated NM self-supporting structure electrode and a preparation method and application thereof, the electrode takes a pretreated nickel net as a conductive substrate, a two-step method combining pulse electrodeposition and constant potential deposition is adopted, a compact NiCoP bottom layer and a Ce-doped CoP outer layer are constructed in sequence, and a CoP / NiCoP heterojunction structure with a three-dimensional coralline open morphology is formed. The method is mild in process, green, simple and convenient, and a traditional high-temperature phosphating step is abandoned. The prepared self-supporting electrode combines the charge regulation advantage of a heterojunction interface, the Ce-doped electronic structure optimization effect and the mass transfer advantage of a three-dimensional porous structure, so that the self-supporting electrode has extremely high hydrogen evolution catalytic activity, strong bonding force with a substrate and excellent long-period operation stability.

The invention relates to a method for preparing a diffusion bonding layer on a nickel-based alloy and YSZ ceramic coating interface, and belongs to the technical field of metal material surface protection and ceramic coatings. According to the preparation method, a YSZ composite ceramic coating is deposited on the surface of the nickel-based alloy by adopting an electrophoretic deposition method, and then an MCr2O5 (M is Zr, Y, Ce, Yb and Al) diffusion bonding layer is prepared on the interface of the nickel-based alloy and the YSZ composite ceramic coating by adopting a pressureless discharge sintering and thermal diffusion treatment method. The bonding layer prepared through the diffusion method is good in interface bonding, the thermal stress between the nickel-based alloy and the YSZ ceramic coating is effectively buffered, the defects that a bonding layer prepared through a traditional method is large in pore impurity amount and the like can be overcome, and the bonding force between the ceramic coating and a base body and the high-temperature anti-oxidation and anti-stripping performance are remarkably improved.

According to the preparation method of the metal atom supported layered manganese oxide electrocatalyst, a precursor solution and foamed nickel are subjected to a hydrothermal reaction, cooling is performed to reach the room temperature after the reaction is finished, the foamed nickel after the reaction is dried, and the layered manganese oxide electrocatalyst is obtained. The layered manganese oxide electrocatalyst is placed in a metal salt electrolyte for electrochemical deposition so as to obtain the metal atom loaded layered manganese oxide electrocatalyst. According to the invention, heterogeneous atoms form metal load on the surface of manganese oxide so as to improve the electrocatalytic activity, selectivity and stability of the catalyst, which is an effective way. The metal load can further regulate and control the interlayer spacing and the electronic structure, more active sites are exposed, and the reaction kinetics can be optimized through bimetal coordination and electronic structure regulation and control; the metal atom doped needle-shaped manganese oxide electrocatalyst is prepared by combining a hydrothermal method with an electrodeposition method, and the preparation method is relatively simpler. In addition, the invention further provides the metal atom supported layered manganese oxide electrocatalyst and application.

The invention discloses a preparation method and application of a bimetallic phosphate oxygen evolution electrode. The preparation method of the bimetallic phosphate oxygen evolution electrode comprises the following steps: cleaning a nickel substrate in an alkaline solution to remove oil, and cleaning the nickel substrate with pure water; soaking the cleaned nickel substrate in an acid solution, cleaning the nickel substrate with pure water, and placing the nickel substrate in the pure water for later use; the nickel substrate placed in the pure water serves as a cathode, two pure nickel materials are placed on the two sides of the nickel substrate to serve as two anodes, and electro-deposition is conducted on the nickel substrate in a bimetallic phosphate solution; and washing an electrode obtained after electrodeposition of the nickel substrate, and drying to obtain the bimetallic phosphate electrode. According to the preparation method, the adsorption free energy of a catalytic layer on the surface of the bimetallic phosphate oxygen evolution electrode on a reaction intermediate is optimized through the synergistic electronic effect of two metals, so that the intrinsic activity of oxygen evolution reaction is improved, meanwhile, a relatively stable catalytic layer structure is formed, and the stability of the bimetallic phosphate oxygen evolution electrode in the oxygen evolution process is improved.

The invention belongs to the technical field of chemical equipment, and discloses an electrolytic water membrane electrode and a preparation method thereof.The preparation method comprises the steps that a catalyst is electrically deposited on the surface of a substrate material, and a self-supporting electrode is obtained; preparing a first anionic membrane solution and a second anionic membrane solution by utilizing the functionalized polyaryl piperidine polymer and a polar solvent; and spraying the first anionic membrane solution on the surface of the self-supporting electrode, drying for the first time, smearing the second anionic membrane solution again by adopting the coating method, and drying for the second time to obtain the cathode side or anode side electrolytic water membrane electrode. Through an in-situ coating technology, the surface of the self-supporting electrode is directly covered with the anionic membrane solution, the surface microstructure of the self-supporting electrode is uneven, the anionic membrane solution can permeate into the pores, the anionic membrane and the electrode are tightly combined, ion transmission at the electrode / membrane interface is remarkably improved, and the self-supporting electrode is more stable in performance. Therefore, the electrolytic bath performance of the membrane electrode assembly under the condition that pure water serves as electrolyte is improved.

The invention discloses preparation and application of a nickel selenide / ferronickel phosphate crystal / amorphous heterogeneous catalyst, and relates to the technical field of electrochemistry. Selenizing the foamed nickel at low temperature in an inert atmosphere to generate a crystalline NiSex layer in situ; and by taking the obtained electrode as a working electrode, carrying out electrodeposition in a deposition solution containing nickel salt, ferric salt, hypophosphite and acetate by adopting a cyclic voltammetry method, so that amorphous NiFePOy is deposited on the surface of NiSex, and a NiSex / NiFePOy crystal / amorphous heterostructure nanosheet layer is constructed and is used for an alkaline medium urea oxidation reaction. The invention has the following beneficial effects: crystalline / amorphous interface coupling and a nanosheet self-supporting structure synergistically improve active sites and charge transfer capability, reduce energy consumption and improve current output; meanwhile, the electrode stability and durability are enhanced; the method has the advantages of low material cost, mild and simple process, suitableness for amplified preparation, and application potential of urea-assisted water electrolysis energy-saving hydrogen production.

Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent include a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and / or high pressure solvent properties. Examples of a class of compressed gases that can be used as solvent for electrolytes include hydrofluorocarbons, in particular fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane. Also disclosed are battery and supercapacitor structures that use compressed gas solvent-based electrolytes and techniques for constructing such energy storage devices. Techniques for electroplating difficult-to-deposit materials using compressed gas electrolytes as an electroplating bath are also disclosed.

The invention belongs to the technical field of biological implant materials, and discloses a medical titanium alloy implant surface modification method and application, and the medical titanium alloy implant surface modification method comprises the following steps: grinding and polishing a titanium alloy surface, and then carrying out ultrasonic cleaning and drying in ethanol; the titanium alloy is placed in multi-arc ion plating equipment, high-purity tantalum serves as a target material, and a tantalum coating is deposited on the surface of the titanium alloy; the surface of the titanium alloy is coated with photoresist, and then a micropore array is formed in the surface of the tantalum coating through the photoetching technology; the titanium alloy is placed in the electrolyte, a Ti plate serves as a cathode, a Ta plate serves as an anode, and hydroxyapatite is deposited in a porous structure through electrochemical deposition; and removing the photoresist to expose the tantalum coating, ultrasonically cleaning with deionized water, and drying. The titanium alloy implant provided by the invention has excellent corrosion resistance, biocompatibility and mechanical properties, and makes up for the deficiency of a single material, so that the titanium alloy implant subjected to surface modification has wider application.

The invention relates to the technical field of brass materials, in particular to a high-strength and high-toughness brass material and a preparation method thereof.The preparation method comprises the steps that a porous oxide film layer is prefabricated on the surface of brass through plasma electrolytic oxidation, and an oxide film layer doped with double-bond silver-loaded graphene oxide is constructed on the surface of the brass; the preparation method comprises the following steps: firstly, preparing modified MXene, then preparing a photocurable hole sealing coating for hole sealing treatment, introducing double-bond silver-loaded graphene oxide and the modified MXene as fillers into the photocurable hole sealing coating, firstly performing sulfhydrylation on the MXene by using 3-mercaptopropyltriethoxysilane, and then grafting a double-bond-containing bis-benzimidazole ring derivative through light click to obtain the modified MXene; vinyl-terminated polyurethane is used as a cross-linking agent, o-phenyl phenoxyethyl acrylate, butyl acrylate, glycidyl methacrylate and octadecyl acrylate are compounded to serve as an acrylic monomer, a diluent and a solvent are introduced, a complex cross-linked network is constructed, and the service life of the brass material is prolonged.

Provided is a surface-treated steel sheet that can be produced without the use of hexavalent chromium and that has excellent adhesion to BPA-free paint. A surface-treated steel sheet having, on at least one surface of a steel sheet, a Ni-containing layer and a coating layer disposed on the Ni-containing layer and containing at least one of Zr oxide and Ti oxide, wherein a contact angle of ethylene glycol is 50° or less, and a total atomic ratio of K, Na, Mg, and Ca adsorbed on a surface of the steel sheet to all elements is 5.0% or less.

This invention discloses a method for preparing a tufted nickel-cobalt hydroxide nanomaterial modified electrode material. The tufted nickel-cobalt hydroxide is prepared on carbon paper using a constant potential method. The electrolyte is a solution of nickel sulfate and cobalt sulfate. The specific operation is as follows: S1. Carbon paper pretreatment; S2. Electrode preparation is a solution containing nickel sulfate and cobalt sulfate; S3. Electrode preparation finally obtains the tufted electrode material.

To provide a new coated substrate.SOLUTION: The coated base material 1 is formed by coating a conductive base material 5 with a film 3. The thickness of the film 3 is 50nm to 10 μm. The film 3 contains magnesium oxide as a main component and is amorphous. When the coating 3 is measured by a fluorescent X-ray analysis method, the content ratio (weight ratio) of Al (aluminum) to Mg (magnesium) is 1 / 500 or more and 1 / 5 or less.SELECTED DRAWING: Figure 1

The invention provides a preparation method of a transition metal oxide positive electrode, the transition metal oxide positive electrode and application. The preparation method comprises the following steps: preparing an electroplating solution: taking a fluxing agent, a metal A source and a transition metal M source as solutes, mixing the solutes with a solvent, and forming the electroplating solution under a heating condition; constructing an electrochemical system: obtaining a working electrode and a counter electrode, placing the electroplating solution in a device, and carrying out electrochemical deposition, so that the A element in the metal A source and the transition metal M source are co-deposited and oxidized to form an AxMO phase; and preparing an electrode: taking out the working electrode, cleaning and drying to obtain the transition metal oxide positive electrode, when the traditional transition metal oxide is removed to prepare the positive electrode, auxiliary materials in the traditional transition metal oxide positive electrode can be omitted, the positive electrode density is improved, the energy density and the power performance of the battery are improved, and the service life of the battery is prolonged. And the prepared positive electrode is more resistant to high temperature and is more adaptive to a solid-state battery needing heat treatment.

The invention discloses a gradient composite reinforced anti-corrosion treatment method for a metal alloy guardrail, and belongs to the technical field of metal material surface treatment. The method comprises the following steps: carrying out ultrasonic cavitation micro-etching and electrochemical gradient activation pretreatment on the surface of a substrate; a metal ceramic composite layer containing a non-oxide ceramic reinforced phase is generated on the surface in situ through a micro-arc oxidation-chemical vapor deposition coupling process, and a component transition layer is formed with the assistance of vacuum gradient diffusion alloying treatment; and finally, coating an intelligent resin coating containing a corrosion inhibitor capsule and a corrosion indicator, and constructing a super-hydrophobic surface. By constructing a multi-layer composite protection system of the gradient diffusion layer / the metal ceramic layer / the intelligent coating / the super-hydrophobic layer, the anti-corrosion performance is remarkably improved, and the obtained guardrail has excellent bonding strength, wear resistance and long-acting anti-corrosion service life, has the intelligent functions of damage self-repairing and corrosion state visualization and is suitable for popularization and application. The method is especially suitable for harsh service environments.

The invention belongs to the technical field of functional coatings, and particularly relates to a super-hydrophobic coating and a preparation method thereof. The preparation method comprises the following steps: pretreating a base material, placing the base material in an aqueous solution containing a zinc source and at least one electroplating additive, and carrying out electro-deposition to form a zinc coating on the surface of the base material; electroplating it in a first solution comprising a zinc source and an electrolyte salt; transferring into a second solution containing zinc source and alkali source precursors, and growing on the zinc plating layer by a hydrothermal method to form a ZnO nano-structure array layer; the preparation method comprises the following steps: reacting a trifluoromethyl-containing acylating agent with a hydrazine compound in an organic solvent, adding phenolic hydroxyl-containing aromatic amine or a salt thereof and alkali, and reacting under a reflux condition to obtain a fluorine-containing organic ligand; sequentially putting the zeolite imidazate framework material into a first organic solvent containing a zinc source and a second organic solvent containing a fluorine-containing organic ligand and imidazole or a derivative thereof to react, and enabling the fluorine-containing zeolite imidazate framework material to grow on the surface in situ to obtain the super-hydrophobic coating.

To provide a structure having a dense carbon film. [Solution] A structure comprising a conductive substrate and a carbon film on the surface of the conductive substrate, wherein the carbon film includes an aggregate of carbon nanoparticles, and the carbon nanoparticles are made of amorphous carbon.

The invention discloses a self-weight configuration oxygen evolution electrode and a preparation method and application thereof.The preparation method comprises the steps that a nickel substrate serving as a working electrode, a platinum sheet serving as a counter electrode and a saturated calomel electrode serving as a reference electrode are placed in a NiCo2O4 precursor solution, constant-potential electro-deposition is conducted on the nickel substrate, and a precursor electrode with a Ni-Co LDH precursor on the surface is obtained; putting the precursor electrode into a heating device for heating and heat preservation, and then taking out the precursor electrode for cooling to obtain a NiCo2O4 electrode with a spinel structure; and sequentially putting the NiCo2O4 electrode into a ferric nitrate nonahydrate aqueous solution and a sodium hydroxide solution, and loading alpha-Fe2O3 nanoparticles on the surface of the NiCo2O4 electrode by using a continuous ion layer adsorption reaction method to obtain the self-weight configuration oxygen evolution electrode. According to the preparation method of the self-weight configuration oxygen evolution electrode, a composite catalyst layer composed of NiCo2O4 and alpha-Fe2O3 of a spinel structure is constructed on a nickel substrate, and the self-weight configuration oxygen evolution electrode can adapt to power fluctuation.

The invention provides a bifunctional electrocatalyst, a preparation method thereof and a hydrogen production method, and relates to the field of catalysts. The bifunctional electrocatalyst comprises a conductive substrate and a core-shell type nano array structure vertically growing on the surface of the conductive substrate, a core in the core-shell type nano array structure comprises a tungsten-doped nickel-iron layered bimetal hydroxide nanosheet array, and a shell comprises cobalt phosphide. The bifunctional electrocatalyst shows excellent catalytic performance and stability in oxygen evolution and hydrogen evolution reactions, and has important application value in the field of electrocatalytic water decomposition.

The invention discloses a hollow cobalt-based microtube designed based on a skin depth theory and a preparation method and application thereof, relates to the technical field of electromagnetic wave absorbing materials, and aims to solve the problems that an existing microwave absorbing material is insufficient in low-frequency-band magnetic loss, high in filling ratio or large in thickness, so that the system load is too heavy; and the design of the electromagnetic wave absorption microtube structure is lack of theoretical guidance. According to the method, the skin depth of electromagnetic waves in a conductor is converted into a wall thickness design parameter, the Co / rGO composite layer is constructed on the surface of the carbon fiber by electrodeposition for 9.0 minutes at the temperature of 60 DEG C for the first time, then the wall thickness is accurately controlled through gradient heat treatment of 800 DEG C air oxidation and 500 DEG C Ar / H2 reduction, and matching with the skin depth of cobalt at the frequency point of 3 GHz is achieved. The material breaks through the low-frequency absorption limit under the ultralow filling ratio of 0.85 wt%:-37.89 dB minimum reflection loss is obtained at the S wave band when the thickness is 1.0 mm, and the effective absorption bandwidth reaches 5.4 GHz; and when the thickness is 3.0 mm, the bandwidth is expanded to 7.8 GHz to cover multiple frequency bands. And an innovative solution is provided for aerospace stealth equipment and high-frequency electronic equipment.

The invention provides a plating bath for preparing a titanium-based lead dioxide electrode through electro-deposition and a preparation method of the plating bath, and relates to the field of plating baths, and the plating bath comprises lead p-toluenesulfonate, p-toluenesulfonic acid, fluoride of alkali metal and a dopant. The titanium-based lead dioxide electrode plating bath selects lead p-toluenesulfonate as a main salt and p-toluenesulfonic acid as an acid source, on one hand, the p-toluenesulfonic acid has a weak complexing effect and can form a complex with lead ions in the plating bath, the polarization effect of electro-deposition is increased, the compactness of a lead dioxide electro-deposition layer is improved, and the electrode stability is improved; on the other hand, p-toluenesulfonic acid serving as a hydrophilic organic molecule containing a large-pi conjugated system can be adsorbed on the surface of a lead dioxide crystal, growth of the lead dioxide crystal is regulated and controlled, electrodeposition distortion and internal stress of a lead dioxide active layer are reduced, and the accelerated life of an electrode is prolonged; and meanwhile, the p-toluenesulfonic acid can promote the dominant growth of beta-PbO2 with high catalytic activity, and is beneficial to improving the electrocatalytic activity of the titanium-based lead dioxide electrode.

A method of enhancing efficiency of an oxygen evolution reaction (OER), oxygen reduction reaction (ORR), or hydrogen evolution reaction (HER) comprises increasing total number electron pathway and / or reaction kinetics of the OER, ORR, or HER by coating one or more surfaces of an electrode participating in the OER, ORR, or HER with one or more metal oxides.

The utility model relates to the technical field of electro-catalysis ammonia production, in particular to an electrolysis device for ammonia production by alkaline electrolysis of nitrate, which comprises a plurality of electrolysis units and end plates positioned at two ends, the plurality of electrolysis units are overlapped between the two groups of end plates, an anode plate is arranged between the left end plate and the electrolysis unit, and a cathode plate is arranged between the right end plate and the electrolysis unit. A cathode plate is arranged between the right side end plate and the electrolysis unit, and electrode terminals are fixedly arranged on the upper sides of the anode plate and the cathode plate; the electrolysis unit is composed of two sets of bipolar electrode plates, two sets of partition plates and electrolysis cavity grooves, the two sets of partition plates are arranged between the two sets of bipolar electrode plates, the electrolysis cavity grooves are formed in the two sets of partition plates, a diaphragm is arranged between the two sets of partition plates, an anode catalyst layer is arranged on the left side of the diaphragm, and a cathode catalyst layer is arranged on the right side of the diaphragm. According to the utility model, the copper / oxygen double-defect Cu2O-coated Cu heterojunction catalytic electrode is adopted, so that the catalytic activity and selectivity are improved, the energy consumption and the cost are reduced, and a new technical path is provided for green low-carbon ammonia synthesis.

The invention belongs to the technical field of oral implant materials, and relates to a magnesium metal-guided bone regeneration membrane, a preparation method thereof and a product for preparing the magnesium metal-guided bone regeneration membrane. The magnesium metal-guided bone regeneration membrane comprises a bone repair combination product of the magnesium metal-guided bone regeneration membrane. The preparation method comprises the following steps: respectively providing an electrochemical deposition solution and a polysaccharide-containing solution; the electrochemical deposition liquid comprises a calcium ion donor, a phosphate ion donor and mussel mucin; the method comprises the following steps: placing a magnesium metal matrix in an electrochemical deposition solution, and carrying out first-stage electrochemical deposition under a first electrochemical deposition condition to prepare an intermediate 1; placing the intermediate 1 in an electrochemical deposition solution, performing second-stage electrochemical deposition under a second electrochemical deposition condition, cleaning, and drying to prepare an intermediate 2; placing the intermediate 2 in a solution containing polysaccharide, dip-coating the polysaccharide, and drying; the first electrochemical deposition condition and the second electrochemical deposition condition are respectively as follows: the voltage is 1-5V and 10-60V; the membrane has the biological functions of low corrosion rate, high bonding strength, inflammation resistance, bacteria resistance, osteogenesis promotion and the like.

Provided is a novel coated substrate (1) which is applicable to various fields and from which high functionality can be expected. In the coated substrate (1), a substrate (5) is coated with a film (3). The thickness of the film (3) is 60 nm or greater and 10 µm or less. Measurement of the film (3) shows that the percentage of C (carbon) element is 0.1 atm% or greater and less than 10 atm% and the sum of the percentage of a metal element and the percentage of O (oxygen) element is 80 atm% or greater. The relative density of the film (3) is 90% or greater, and the film (3) contains γ-Al2O3.

The invention provides an electrochemical fluorinated membrane and a preparation method and application thereof, specifically, the component of the electrochemical fluorinated membrane is aluminum fluoride, and all the aluminum fluoride in the electrochemical fluorinated membrane is of a body-centered cubic structure. In the preparation process of the electrochemical fluorinated membrane, the surface temperature of the aluminum alloy is close to 3400-3600 K, and the prepared electrochemical fluorinated membrane is glazed at the high temperature, so that the prepared electrochemical fluorinated membrane is more uniform. The electrochemical fluorinated membrane is uniform, compact and good in appearance. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the color difference yield of the appearance and reduce the cleaning cost. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the corrosion resistance of halogen elements. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the breakdown voltage resistance.

A method for manufacturing a battery cell includes connecting a current collector to a working electrode; connecting a zinc metal portion to a counter electrode; immersing the current collector and a portion of the working electrode in a liquid; immersing the zinc metal portion and a portion of the counter electrode in the liquid; supplying molecular oxygen into the liquid; and electrochemically coating the current collector with a zinc oxide layer.