2457 results about "Working electrode" patented technology

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Described herein are variations of an analyte monitoring system, including an analyte monitoring device. For example, an analyte monitoring device may include a skin-penetrating microneedle array for use in measuring analyte, such as in a continuous manner. The microneedle array may include, for example, at least one microneedle comprising a working electrode comprising an analyte-sensing aptamer that selectively and reversibly binds to analyte. The working electrode comprises at least one thiol-based passivation molecule that provides protection of the working electrode from, by way of example, foulants and interferents. For example, a sensor may be configured to generate a signal that is indicative of a concentration of an analyte in a fluid, the sensor comprising a working electrode comprising an electrode material, a biorecognition layer disposed at least partially on the electrode material and comprising a biorecognition element that selectively and reversibly binds to an analyte, and an at least partially desiccated hydrogel disposed on the biorecognition layer. For example, a working electrode may be configured to generate a signal indicative of a concentration of an analyte in a fluid, the working electrode comprising an electrode material, a biorecognition element disposed on the electrode material that selectively binds to the analyte, wherein the biorecognition element is functionalized with a redox-active molecule and is configured to change conformation upon binding the analyte to move the redox-active molecule, closer to, or further from, the electrode material, and a passivation element comprising a zwitterionic peptide disposed on the electrode material.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Disclosed herein are systems and methods for electrically modulating tissue. Systems can include a current generator; at least one implantable working electrode, the at least one implantable working electrode configured to be in electrical communication with the current generator; at least one indifferent electrode; and a controller configured to signal the current generator to: generate a set of currents with a set of initial polarities to be delivered to the working electrodes; and wherein the at least one indifferent electrode absorbs a bias current which is equal in magnitude and opposite in polarity to a summation of the set of currents.

The invention discloses an electrochemical sensor constructed based on a composite material and a preparation method and application thereof.The electrochemical sensor comprises a screen-printed electrode, the surface of the reaction end of a working electrode of the screen-printed electrode is loaded with a zirconium-based metal organic framework composite material, the composite material comprises UiO-66, and the surface of the composite material is modified with a polydopamine coating. The preparation method comprises the following steps: preparing the zirconium-based metal organic framework composite material and fixing the composite material on the working electrode of the screen-printed electrode. According to the invention, the zirconium-based metal organic framework composite material with many adsorption sites, good dispersibility, good conductivity and good hydrophilicity is used as a functional material, so that the sensor has the advantages of simple operation, low cost, rapid response, strong anti-interference capability, wide detection linear range, high detection sensitivity, long service life and the like, and can be widely used for detecting Mn < 2 + >, Mn < 2 + >, Mn < 2 + >, Mn < 2 + > and Mn < 2 + > in a water body. The method can realize rapid and accurate detection of Mn < 2 + > in a water body, and is high in use value and good in application prospect.

The present invention relates to: an electrochemical biosensor capable of effectively and sensitively detecting alfuzosin; an electrode applied thereto; a metal-organic framework (MOF) which includes a zinc / cobalt oxide and is applied in manufacturing the electrode; and methods for manufacturing same.

The invention discloses a method for synthesizing deuterated olefin under catalysis of a palladium membrane by taking D2O as a deuterium source, and belongs to the technical field of synthesis of deuterated olefin building blocks. According to the method, a three-chamber electrolytic tank separated by a palladium membrane and an ion exchange membrane is used as a reactor, the palladium membrane is used as a working electrode, an electrolyte deuterium aqueous solution is used as an electrolyte, deuterium water is electrolyzed through a constant-potential electrolysis method, and formed active deuterium is transmitted to one side of an organic reaction taking absolute ethyl alcohol or cyclohexane as an organic solvent; and catalyzing an alkyne compound by using a palladium membrane modified by sodium thiophenol to perform reduction deuterization so as to synthesize a deuterated olefin compound with high selectivity, and further synthesizing a corresponding deuterated drug. The invention provides a green, efficient, high-universality and low-cost amplification synthesis method for synthesizing a deuterated olefin building block containing a functional group easy to reduce and hydrolyze, and the method has a wide application prospect.

The invention discloses a potassium ion sensor based on AuNPs / MXene / SPCE and a preparation method thereof, and belongs to the technical field of electronic components. Comprising a screen-printed carbon electrode SPCE, an MXene layer modified on the surface of a working electrode of the screen-printed carbon electrode, a gold nanoparticle AuNPs layer formed on the surface of the MXene layer through an electrochemical deposition method, a potassium ion selective membrane covering the gold nanoparticle AuNPs layer, and a GO-PVA hydrogel layer coating the surface of the potassium ion selective membrane. According to the prepared sensor, only potassium ions in sweat can pass through the selective membrane, the selectivity of the sensor is improved, meanwhile, due to the application of the AuNPs / MXene composite material, the surface area-volume ratio of a silk-screen printing carbon electrode is greatly improved, more potassium ions participate in ion-electron conversion, the sensitivity of the sensor is improved, and the application range of the sensor is widened. And the detection range is expanded.

The invention discloses a preparation method of a bionic cornea stroma lens for refractive correction, which comprises the following steps: solution preparation: dissolving type I collagen in an acetic acid solution, adding a film aid, fully stirring, and centrifugally defoaming to obtain a type I collagen composite solution; the I-type collagen composite solution is poured into an assembling groove, the curvature radius of titanium metal is set to be 6.8-8.0 mm, the titanium metal serves as a working electrode material, platinum metal serves as a counter electrode material, current parameters are set according to the needed thickness of the lens blank, the density is 3.50-6.50 mA / cm < 2 >, and the thickness of the lens blank is set to be 3.50-6.50 mA / cm < 2 >; a high-transparency cornea embryo material which is uniform in curvature in all directions and similar to human cornea fiber structure arrangement is formed after electrochemical assembly and cross-linking curing, accurate cutting machining is carried out through excimer laser, a concave / convex matrix lens with the needed correction degree is obtained, the correction precision is high after cornea interlayer implantation, and the correction precision is high. And meanwhile, the compound has excellent performance in the aspects of in-vivo stability and biological safety.

The invention provides an MEMS electrochemical gas sensor and a processing method thereof. The sensor is mainly composed of a breathable substrate structure, a counter electrode, a semi-solid electrolyte layer and a working electrode, the counter electrode, the semi-solid electrolyte layer and the working electrode form a sandwich structure, the thickness of the semi-solid electrolyte layer is 1-30 microns, and the semi-solid electrolyte layer is mainly of a film structure formed by baking a semi-solid electrolyte solution. According to the MEMS electrochemical gas sensor, the semi-solid electrolyte layer is mainly processed based on a semi-solid electrolyte material by adopting processes such as spraying or spin-coating, drying and curing, and the MEMS electrochemical gas sensor is designed and prepared by combining an MEMS process, so that the size of the sensor structure can be 1 mm, the miniaturized and zero-power-consumption work is realized, the gas sensor has a good response signal, and the gas sensor has a good application prospect. The load resistance is in a kiloohm level, and the output current is in a [mu] A level. The sensor can be used for monitoring reducing gases such as carbon monoxide, ethanol, formaldehyde and the like.

The invention provides a preparation method of a nickel-based composite oxygen evolution anode for alkalescent electrolyte. According to the invention, nickel-based alloy is used as substrates, two same substrates are respectively used as a working electrode and an auxiliary electrode, two-electrode system electrochemical oxidation reduction treatment at room temperature is carried out in a mixed solution of phosphate, carbonate and chloride, and two reconstructed nickel-based composite oxygen evolution electrodes are obtained at the same time. In the electrochemical oxidation process, nickel ions and other metal (Fe, Co, Cr and Mn) ions are dissolved out from the nickel-based alloy under the etching assistance of chloride ions; in the electrochemical reduction process, water on the electrode is reduced to form hydroxyl. Under continuous oxidation reduction, substance reconstruction is carried out to generate a composite catalyst layer of phosphate, carbonate and hydroxide of nickel and other metals, so that not only can the oxygen evolution activity be improved, but also metal dissolution and corrosion passivation when the catalyst is used in a weakly alkaline solution can be inhibited, and the durability of the electrode is greatly improved.

The invention discloses a method for detecting cadmium ions and lead ions in a water body by utilizing a screen-printed electrode electrochemical sensor, which comprises the following steps of: constructing the screen-printed electrode electrochemical sensor by taking a screen-printed electrode of which the surface of a reaction end is modified with a ZIF-8 / MWCNT nano composite material as a working electrode; the method comprises the following steps: detecting the peak current change of a to-be-detected cadmium / lead ion solution by using a screen-printed electrode electrochemical sensor, and calculating the concentrations of cadmium ions and lead ions in the to-be-detected cadmium / lead ion solution by using a linear regression equation of the cadmium ion concentration, the lead ion concentration and the peak current change. The method provided by the invention has the advantages of simple operation, low cost, high detection efficiency, high detection accuracy and the like, can realize on-site detection of cadmium ions and lead ions in a water body, and has the advantages of convenient operation, high accuracy, strong anti-interference capability to interference factors, and good application prospect. The method is of great significance to efficient detection of heavy metal cadmium ions and lead ions in the water environment.

A carbon dioxide recovery system includes an electrochemical cell that includes a working electrode, a counter electrode, an insulating layer, and an electrolyte layer. The electrochemical cell is configured to repeat an adsorption mode and a desorption mode. In the adsorption mode, in a state where oxygen is supplied together with a gas to be treated that contains carbon dioxide to a portion of the electrolyte layer in a vicinity of the working electrode, a voltage is applied between the working electrode and the counter electrode to supply electrons to the working electrode so that the oxygen receives electrons to generate active oxygen, and the active oxygen combines with the carbon dioxide to absorb the carbon dioxide and generate a carbon dioxide adsorbed molecule.

The invention relates to the technical field of electrochemical sensors, and provides a multi-channel electrochemical detection electrode, an electrochemical sensor and a detection method.The multi-channel electrochemical detection electrode comprises an electrode substrate and a plurality of working electrodes arranged on the electrode substrate; the surfaces of the plurality of working electrodes are respectively modified with different types of metal nano-catalysts to detect different gas components, and the surfaces of the working electrodes are covered with PDMS hydrophobic layers to form a hydrophilic / hydrophobic channel separation structure. The surfaces of a plurality of working electrodes are modified with different types of metal nano-catalysts and covered with PDMS hydrophobic layers to form a hydrophilic / hydrophobic channel separation structure, and the multi-channel electrochemical detection electrode separates gas molecules through hydrophilic / hydrophobic channels, so that the cross reaction can be inhibited, and the cross sensitivity can be reduced.

The open type in-situ electrochemical reaction tank comprises a reaction tank main body and a connecting assembly, an open type electrolyte cavity is arranged above the reaction tank main body, and a base for mounting a working electrode is arranged below the reaction tank main body; a through objective lens hole is formed between the electrolyte cavity and the base, and a reference electrode jack is formed in the side wall of the electrolyte cavity; a working electrode lead hole is formed in the side wall of the base, and an O-shaped gasket groove, a silica gel gasket groove and a working electrode fixing screw hole are formed in the bottom of the base. The reaction tank disclosed by the invention can realize in-situ electrochemical spectrum detection by connecting an electrochemical workstation, is small in volume, simple in mounting method, convenient to clean, high in quality of collected spectrum signals, acid-base-resistant and wide in application range, not only can be adaptive to upright and inverted micro-Raman spectrum systems, but also can ensure the accuracy of electrochemical spectrum test, and is suitable for large-scale popularization and application. The reaction mechanism can be deeply understood, the reaction conditions can be optimized, and the research quality can be improved.

A working electrode is inserted into the plant to monitor the health of the plant components or to detect physical, mechanical damage or environmental change in the soil or atmosphere. A standard electrode is inserted into soil surrounding the plant or in the plant itself. A data logger connects the working electrode and the standard electrode. The data logger measures the potential difference between the working electrode and the electrolyte to provide the ability to compare a measured potential difference with a predetermined critical potential difference for the plant. A second electrochemical cell can inject electrons and ions into the plant. The plant can be used as a sensor to monitor the environmental change in the soil or in the atmosphere.

The invention discloses a method for measuring the mass sensitivity of a quartz crystal microbalance with asymmetric electrode configuration, which comprises the following steps of: placing an upper electrode of the quartz crystal microbalance with asymmetric electrode configuration as a working electrode of a three-electrode electrochemical electroplating system in electroplating liquid; the asymmetric electrode configuration quartz crystal microbalance is connected into a frequency measurement system, so that a three-electrode electrochemical electroplating measurement system is constructed, and the increased mass of an electroplated film can be obtained only by measuring the total charge amount. The problem that the mass sensitivity of the asymmetric electrode configuration QCM sensor cannot be calculated by the existing Sauerbrey theory is solved, meanwhile, the measurement of the total charge belongs to electronic measurement, the measurement accuracy is far greater than the measurement accuracy of salt solution parameters, and only one electrical parameter is measured, so that the measurement accuracy of the mass sensitivity of the QCM sensor is greatly improved, and the measurement accuracy of the mass sensitivity of the asymmetric electrode configuration QCM sensor is greatly improved. The method has a wide application prospect, and can be popularized to solve the problem of experimental measurement of overtone quality sensitivity.

The invention belongs to the technical field of metal surface treatment, and relates to a preparation method of a metal surface lattice passivation corrosion-resistant film, which comprises the following steps of: polishing and cleaning a metal surface, constructing a three-electrode system, and applying cathode voltage to the metal to carry out surface modification treatment so as to realize metal surface lattice reconstruction, thereby obtaining the metal surface lattice passivation corrosion-resistant film. A compact adsorption layer of corrosion inhibition molecules is formed; the three-electrode system comprises metal as a working electrode, a platinum sheet as an auxiliary electrode and silver / silver chloride or saturated calomel as a reference electrode. According to the method, metal surface lattice reconstruction is achieved through cathode voltage treatment, the technical thought of traditional anodic oxidation is subverted, the passive film forms a regular lattice structure, defects in the film are greatly reduced, permeation of a corrosion medium is effectively blocked, and the corrosion resistance of metal is remarkably improved.

The invention discloses a microelectrode structure and a manufacturing method thereof and a sensor, the microelectrode structure comprises a flexible substrate and a microelectrode system arranged on the surface of the flexible substrate, the microelectrode system comprises a counter electrode, a working electrode and a reference electrode, and electrode units are horizontally laid on the upper surface and the lower surface of the flexible substrate. The electrode units on the upper surface and the lower surface of the flexible substrate respectively comprise at least one of a counter electrode, a working electrode and a reference electrode, the electrode units on the upper surface of the flexible substrate form a first microelectrode system, and the electrode units on the lower surface of the flexible substrate form a second microelectrode system; or the electrode units on the upper surface and the lower surface of the flexible substrate jointly form a third microelectrode system. The electrodes are manufactured on the front side and the back side of the flexible substrate to form one or two microelectrode systems, the area of the microelectrodes is maximized on the limited surface of the substrate, and the detection precision is improved; double-channel double-substance monitoring, double-channel single-substance monitoring or single-channel single-substance monitoring can be achieved, and functional diversity is achieved.

The invention discloses an electrocatalytic oxidation method for highly selectively converting 5-hydroxymethylfurfural into 2, 5-furandicarboxylic acid by using a cobalt-nickel bimetallic catalyst, and belongs to the technical field of electrochemistry. Firstly, foamed nickel is pretreated; secondly, preparing a cobalt-nickel mixed solution, synthesizing the catalyst by adopting a solvothermal method, and characterizing the catalyst; and thirdly, preparing a three-electrode system by taking the cobalt-nickel catalyst as a working electrode, a spiral platinum wire electrode as a counter electrode, a Hg / HgO electrode as a reference electrode, an alkaline solution as an electrolyte and a Nafion 117 proton membrane as a diaphragm to realize conversion. And finally, testing the stability and cyclicity of the cobalt-nickel catalyst. Under the same potential, the material has the highest current density, the maximum electrochemical active area and the optimal charge transfer rate; the self-degradation of HMF can be effectively inhibited, the electrocatalytic oxidation has lower initial potential than the oxygen evolution reaction, and the electrode cycle stability is good; the method is simple in process, mild in condition and beneficial to industrial production.

The invention relates to a preparation technology of an electrochemical catalytic material, and aims to provide a method for preparing an electrode material through pulse electrodeposition and application of the electrode material in an oxygen evolution reaction. The method comprises the following steps: constructing a dual-electrode electrolysis system, and co-depositing transition metal ions and selenium ions on a working electrode by adopting a pulse electrodeposition method to form a catalyst layer containing transition metal and selenide; then the working electrode is used for building an electrochemical system, electrochemical activation treatment is conducted on the working electrode through cyclic voltammetry, a selenium phase is induced to fall off, porous metal oxide is formed by reconstructing the surface of a catalyst layer, and the electrode material for the water electrolysis oxygen evolution reaction is obtained. The selenium phase is induced to fall off through electrochemical activation to form a porous metal oxide structure, the specific surface area is remarkably increased, rich oxygen vacancies are formed, the electronic structure is optimized, more active sites are exposed, and the catalytic activity is improved; the method is easy to operate, high in parameter controllability, free of high-temperature and high-pressure equipment and suitable for large-scale production.

The invention discloses a praseodymium-copper heterogeneous catalyst for synthesizing a multi-carbon alcohol product through efficient electroreduction of carbon dioxide and a preparation method of the praseodymium-copper heterogeneous catalyst. The praseodymium-copper heterogeneous catalyst is a composite material of praseodymium oxide and copper oxide, and praseodymium, copper and oxygen are uniformly distributed in the praseodymium-copper heterogeneous catalyst; the praseodymium oxide is an oxide with the praseodymium-oxygen molar ratio of 6: 11; the molar ratio of praseodymium to copper is not less than 2. The invention provides a method for preparing a multi-carbon alcohol product by electrocatalytic reduction of carbon dioxide, which comprises the following steps: by taking a mercury / mercuric oxide electrode as a reference electrode, a foamed nickel electrode as a counter electrode and a praseodymium-copper heterogeneous catalyst as a working electrode, carrying out electrochemical reduction in a gas diffusion type flowing electrolytic tank to obtain the multi-carbon alcohol product. The praseodymium-copper heterogeneous catalytic material is designed, and the interaction relationship between metal and a carrier and between the metal and the carrier and a reaction intermediate in the catalyst is adjusted by introducing the rare earth element praseodymium, so that the reaction activity and the target product selectivity are improved.

A continuous transcutaneous monitoring sensor system comprising a sensor area comprising a working electrode, the working electrode having an electrochemically active surface area at least partially implanted, at least one membrane adjacent the electrochemically active surface area, and a controller configured to provide a swept potential range to the at least partially implanted electrochemically active surface area is disclosed. A method of continually detecting fouling and electrochemically removing fouling of an implantable sensing electrode is also disclosed.

The invention relates to the field of new energy batteries, in particular to a negative electrode current collector and a preparation method thereof, a pole piece and a battery, and the preparation method comprises the following steps: preparing a carbon nanotube with a hydroxyl group on the surface; mixing a carbon nanotube with hydroxyl on the surface, an isocyanate raw material, diol, water and a second organic solvent, and carrying out heating reflux treatment to obtain a third product; mixing the third product, a polytetrahydrofuran raw material, a second organic solvent and a second ammonium salt, and carrying out a polymerization reaction to obtain a precipitate; carrying out drying treatment on the precipitate, so as to obtain foam polyurethane modified by the carbon nano tube; and taking the foam polyurethane modified by the carbon nano tube as a working electrode, carrying out deposition reaction on the working electrode to obtain a base material with a metal layer deposited on the surface, and washing and drying the base material with the metal layer deposited on the surface. The negative electrode current collector lithium metal battery provided by the invention has relatively large energy density, relatively small battery internal resistance, relatively strong cycle performance and relatively low safety risk.

The invention discloses a micro-structure electrode flexible electrochemical sensor which comprises a flexible electrode substrate with a hemispherical array and three surface electrodes (a working electrode, a counter electrode and a reference electrode). The working electrode comprises a protruding metal array and a through hole array, protruding metal corresponds to the hemisphere array of the substrate, and the through hole array penetrates through the substrate. According to the sensor, the reaction area is increased through the three-dimensional structure, electron transfer is promoted, oxygen supply is guaranteed through the through hole array, the mechanical stability is enhanced through the flexible substrate and the structural design, and the sensor is suitable for wearable equipment.

The invention discloses a charge-discharge energy-saving electro-catalysis sewage treatment method which comprises the following steps: step 1, cleaning a carbon electrode, inserting the carbon electrode into sewage as a cathode and an anode at the same time, and arranging a magnetic stirrer at the bottom of an electrochemical reaction tank; step 2, applying constant voltage or constant current to the working electrode to ensure that the voltage can degrade pollutants, the anode does not generate oxygen evolution reaction, and the cathode does not generate hydrogen evolution reaction; step 3, stopping applying voltage or current to the working electrode, monitoring open-circuit voltage, gradually reducing the open-circuit voltage, and continuously degrading pollutants by utilizing the electric energy stored by the electrode; and step 4, repeating the step 2 and the step 3 until the electrocatalytic degradation is completed. Under the condition that the removal effect is guaranteed, electric energy is saved, and about 30-90% of energy consumption is reduced; the constant-current charging catalysis step ensures that the current density is controllable, and safe production is ensured; the process is simple, does not need special equipment and materials, and is suitable for upgrading and reconstruction of existing sewage treatment systems.

The invention discloses a non-enzymatic uric acid electrochemical sensor based on quaternary ammonium salt modified MXene, a method and application, and belongs to the technical field of sensors. The preparation method comprises the following steps: preparing an MXene material through an etching method; the preparation method comprises the following steps: modifying an MXene material by adopting quaternary ammonium salt to obtain a modified MXene material; a working electrode is modified with the modified MXene material, a reference electrode and a counter electrode are combined to form a three-electrode system, and the non-enzymatic uric acid electrochemical sensor based on quaternary ammonium salt modified MXene is obtained. The prepared non-enzymatic uric acid electrochemical sensor is excellent in performance, high in sensitivity and low in detection limit; the linear range is wide and covers the human blood uric acid concentration range; the stability is good, and the influence by temperature and pH is avoided; the biological compatibility is good, the antibacterial property is good, and the toxicity is low. The sensor can realize rapid and quantitative detection of human blood uric acid concentration, has excellent detection performance, and has no obvious difference with the detection result of a large biochemical analysis instrument.

The invention relates to the technical field of electrolytic catalysts, in particular to an electrolytic seawater oxygen evolution catalyst suitable for industrial-grade electrolytic current density and a preparation method and application of the electrolytic seawater oxygen evolution catalyst. The invention discloses a preparation method of an electrolytic seawater oxygen evolution catalyst suitable for industrial-grade electrolytic current density, which comprises the following steps: S1, substrate pretreatment, S2, electroplating liquid preparation, S3, pre-catalyst preparation, S4, catalyst activation, taking the pre-catalyst obtained in the S3 as a working electrode, taking a carbon rod as a counter electrode, and taking the electroplating liquid as an electroplating liquid. A mercury / mercuric oxide electrode is used as a reference electrode, and the catalyst is obtained through repeated cyclic voltammetry activation. The seawater electrolysis oxygen evolution catalyst prepared in the invention has excellent catalytic activity, and can stably serve in alkaline real seawater for a long time with industrial-grade electrolysis current density.