1126 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.

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.

The invention provides a flexible electrochemical sensor, a preparation method and application. The flexible electrochemical sensor comprises a flexible substrate, three electrodes, a conductive strip, an external wire and a multi-cavity polypyrrole film, the three electrodes comprise a working electrode, a reference electrode and an auxiliary electrode and are printed on the flexible substrate; the conductive strip is connected with the three electrodes, the conductive strip is packaged through an insulating tape, and only working areas of the three electrodes are exposed; the external wire is pasted on the conductive strip through conductive silver adhesive. The multi-cavity polypyrrole film is modified on the surface of the working electrode. The technical problems that existing equipment is insufficient in portability, cannot meet the requirements of on-site rapid screening and real-time analysis of large-batch samples, and is difficult to realize on-site mobile detection are solved. The invention provides a feasible technical means for portable, mobile and on-site rapid detection of high-harm heavy metal ions such as Hg < 2 + > and Cd < 2 + >, and the method is simple to operate and extremely low in cost.

The application discloses an electrochemiluminescence immunosensor for detecting interleukin-1 beta and a preparation method and application thereof, and comprises a three-electrode system of a working electrode, a reference electrode and a counter electrode; the working electrode is a modified electrode of CoAl layered double hydroxide, is loaded with platinum nanoparticles after being etched by alkali, and is obtained by fixing interleukin-1 beta antibodies and blocking non-specific sites; and a solution containing luminol is used as an electrolyte during detection of the immunosensor. The working electrode of the immunosensor takes oxygen-rich vacancy CoAl layered double hydroxide as a substrate, combines with platinum nanoparticles to realize EMSI effect, significantly enhances the electrochemiluminescence signal of a luminol-dissolved oxygen system, realizes quantitative detection of IL-1 beta by combining with specific antigen-antibody recognition, and has the characteristics of strong anti-interference ability, fast detection speed and good stability.

The invention provides an X-ray absorption spectrum characterization system and an X-ray absorption spectrum characterization method for electrochemical reaction under a high-current working condition. A high-current electrochemical workstation provides current density not lower than that of a working condition electrolytic tank; the working condition electrolytic tank comprises a working electrode chamber and a counter electrode chamber which are oppositely arranged, and an ion exchange membrane arranged between the working electrode chamber and the counter electrode chamber; the working electrode chamber comprises a current-conducting plate made of a metal sheet, a working electrode loaded with a catalyst is arranged on one side, facing the ion exchange membrane, of the current-conducting plate, and a hollow flow channel is formed in the central area of the working electrode chamber; the working electrode chamber further comprises an X-ray window sheet for transmission of incident X-rays and fluorescent X-rays generated by the catalyst; the counter electrode chamber is provided with an electrolyte flow channel, and a counter electrode is arranged on one side, facing the ion exchange membrane, of the counter electrode chamber; and the electrolyte control system is used for realizing circulating flow of the electrolyte. Under the working conditions of high current density, strong bubble effect and high X-ray absorption, in-situ, real-time and high signal-to-noise ratio characterization of the microstructure of the catalyst can be realized.

The present disclosure is related to a bimetallic monatomic nano-enzyme electrochemical sensor, and a preparation method therefor and an application thereof. The bimetallic monatomic nano-enzyme electrochemical sensor comprises a working electrode, a counter electrode, a reference electrode and an electric signal control device; the working electrode is formed by coating a gallium-copper bimetallic monatomic nano-enzyme and a conductive carbon paste on a flexible carrier; and according to the present disclosure, the electrochemical sensor is constructed by loading a catalytic material of the gallium-copper bimetallic monatomic nano-enzyme on an electrode substrate material, which is used for detecting a volatile amine content in fresh meat, so as to detect a freshness of fresh meat.

Techniques for determining microbiological corrosion include flowing a mixed-phase wellbore fluid from at least one tank into a volume of a reactor tank of a microbiological corrosion reactor; controlling a multi-channel potentiostat coupled to a three-electrode cell assembly positioned in the volume, the three-electrode cell assembly including a working electrode, a counter electrode, and a reference electrode, where each of the working electrode, the counter electrode, and the reference electrode is positioned in the volume to contact the mixed-phase wellbore fluid; based on controlling the multi-channel potentiostat, activating the working electrode in the mixed-phase wellbore fluid in the volume; and determining, based on activating the working electrode, a corrosion rate of at least one of the working electrode or a target coupon positioned within the mixed-phase wellbore fluid in the volume.

Described herein are variations of a sensor configured to generate a signal that is indicative of a concentration of an analyte in a fluid. The sensor may include 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. In some variations, the biorecognition element may be 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. In some variations, the biorecognition element may be an aptamer.

The invention discloses a seawater chemical oxygen demand determination method based on bias voltage photoelectric oxidation, and relates to the technical field of water quality monitoring. The method comprises the following steps: collecting seawater and performing pretreatment to obtain a seawater sample; adding supporting electrolyte into the seawater sample to obtain an electrolytic water sample; the method comprises the following steps: injecting an electrolysis water sample into a photoelectrochemical reaction tank, applying bias voltage to a working electrode by taking Ag / AgCl as a reference electrode, and turning on a light source with a specific wavelength for irradiation; carrying out an oxidation reaction in the photoelectrochemical reaction tank, and after the oxidation reaction of the organic matter is complete, obtaining a steady-state photocurrent with a stable current signal; according to a preset steady-state light current-COD concentration curve, a COD measured value is obtained, the COD standard concentration value is corrected according to the water temperature and the salinity, and a COD corrected value is obtained. An adjustable tiny external bias voltage is introduced to cooperate with light source irradiation, so that rapid, accurate and high-anti-interference measurement of COD in seawater is realized.

This invention provides a method for preparing (002) crystal-plane oriented metallic zinc and its application. The invention employs a two-electrode electrochemical deposition technique, using iron foil, titanium foil, or copper foil as the working electrode, commercial zinc foil as the counter electrode, and an aqueous zinc salt solution as the electrolyte. Constant current density discharge deposition is used to deposit (002) crystal-plane oriented metallic zinc on the working electrode; the constant current density is 50 mA cm⁻¹. ‑2 ~200 mA cm ‑2 The (002) crystal-plane oriented metallic zinc prepared by this invention can be used in rechargeable zinc-ion batteries. The two-electrode electrolytic cell device used in the preparation of metallic zinc in this invention is simple, the preparation process is straightforward, and the preparation method is more universal. The (002) crystal-plane oriented metallic zinc prepared according to the method of this invention can suppress zinc dendrite growth and hydrogen evolution, thereby improving the service life of rechargeable zinc-ion batteries.

A cell retainer has a measuring surface that includes a work region in which a plurality of working electrodes are arranged, a reference electrode arranged outward of the work region, a plurality of first regions provided between the work region and the reference electrode, and a second region arranged between each two of the first regions, the two being adjacent to each other in a radial direction. A contact angle in the first region is greater than a contact angle in the work region and a contact angle in the second region. Thus, any of the first regions arranged outward of the work region or the second region serves to restrict the spread of a cell suspension. Moreover, the first regions arranged in multiple tiers enable selection of a drop region and a drop area from a plurality of drop regions and a plurality of drop areas.

The invention belongs to the field of aluminum alloy processing, and provides a method for evaluating the corrosion resistance of an anodic oxide film and the corrosion capacity of a semi-synthetic cutting fluid, which comprises the following steps of: respectively taking a corrosive liquid or the semi-synthetic cutting fluid as an electrolyte and simulating a corrosive environment, and then taking an aluminum alloy sample as a working electrode to evaluate the corrosion resistance of the anodic oxide film and the corrosion capacity of the semi-synthetic cutting fluid; performing an electrochemical test in a corrosion environment to obtain charge transfer resistance Rct and corrosion current density Icorr, and then calculating a corrosion resistance index CI; the higher the obtained corrosion resistance index CI value is, the higher the corrosion resistance of the anodic oxide film of the aluminum alloy sample is, or the lower the corrosion capacity of the semi-synthetic cutting fluid is. And the corrosion resistance of the anodic oxide film or the corrosivity of the semi-synthetic cutting fluid can be rapidly and accurately evaluated.

The invention relates to the technical field of equipment corrosion prevention, and discloses a life self-sensing sacrificial anode and cathode protection device which comprises a protection execution unit, a data acquisition unit and a remote sensing unit. Wherein the protection execution unit comprises an anode block, a conductive connecting piece and an adsorption device, one end of the conductive connecting piece is embedded into the anode block, the other end of the conductive connecting piece is fixed with the adsorption device, and the adsorption device is detachably connected with the protected steel structure. A working electrode of an electric quantity metering device of the data acquisition unit is electrically connected with the conductive connecting piece, and a counter electrode is electrically connected with the steel structure in the adsorption device combination area. And the remote sensing unit is in signal connection with the data acquisition unit and is used for receiving the acquired current data. According to the invention, remote real-time monitoring of cathode protection current is realized, the defect that the state of a traditional anode is unknown is overcome, and predictive maintenance is facilitated; meanwhile, the adsorption type detachable structure does not need underwater welding, the installation and replacement process is greatly simplified, and the engineering applicability and the maintenance efficiency are improved.

The invention discloses a high-throughput electrochemical detection platform based on an ultra-infiltration micro-droplet array, a preparation method of the high-throughput electrochemical detection platform and application of the high-throughput electrochemical detection platform in AD marker detection, and belongs to the technical field of intersection of analytical chemistry, biosensing and material science. The method comprises the following steps: cleaning and drying a substrate, and immersing the surface of the substrate in a fluorosilane solution to form a super-hydrophobic layer by adopting a dip-coating method; after covering with a mask plate, etching with O2 plasma so as to form a hydrophilic microdot matrix; respectively printing an Ag / AgCl reference electrode, a gold working electrode and a carbon counter electrode on the hydrophilic microdots; electrode wires are printed layer by layer, a reference electrode wire, a working electrode wire and a counter electrode wire are sequentially printed in the area outside the hydrophilic microdot matrix from bottom to top in a spin-coating PDMS layer separation mode after each layer of electrode wire is printed, and PDMS is spin-coated above the counter electrode wire for packaging after printing is completed; and on each gold working electrode, respectively modifying capture antibodies of A beta 42, A beta 40, P-tau181 and P-tau217 proteins through a sample application instrument, so as to obtain the detection kit.

The invention relates to the technical field of electrochemistry, and discloses a liquid-phase electro-catalysis in-situ cell for X-ray absorption spectrum testing, the liquid-phase electro-catalysis in-situ cell is characterized in that a copper working electrode wire, a fixed window and an insertion window are arranged on an electrolytic cell cavity, a cell body top cover is fixedly arranged on the electrolytic cell cavity, the fixed window is located at one side of the electrolytic cell cavity, and the insertion window is located at the other side of the electrolytic cell cavity. The insertion window is positioned on the other side of the electrolytic tank cavity; the liquid layer thickness adjusting assembly is fixedly mounted in the insertion window; the working electrode fixing assembly is fixedly installed in the fixing window. The cavity of the electrolytic tank is of an integrated structure, the light-transmitting tube adopts a 45-degree unfilled corner and an adjustable liquid layer design, rapid switching of transmission and fluorescence modes is supported, screws or adhesive tape fixation is avoided, the integrated cavity shortens the electrode replacement time to be less than 1 minute, the test efficiency is remarkably improved, the liquid leakage risk is reduced, a corrosion-resistant material is matched with an acid / alkaline electrolyte, and the service life of the electrolytic tank is prolonged. The modular structure can be expanded to different reaction systems, and is convenient to modify to adapt to other synchrotron radiation testing technologies.

The utility model discloses an electrochemical reaction tank for a hard X-ray absorption spectrum in-situ dual-mode test. The electrochemical reaction tank comprises a reaction tank body, a working electrode, a reference electrode and a graphite counter electrode, the front plate is provided with a working electrode window, and the upper plate is provided with a reference electrode hole and a graphite counter electrode hole. The working electrode is arranged at the window of the front plate and is tightly attached to the reaction tank body through a polyimide adhesive tape, and the reference electrode and the graphite counter electrode are arranged on the two sides of the reaction tank body and are respectively connected with an external electrochemical working platform. The distance between the working electrode window and the rear plate is controlled, and the working electrode is coupled with synchrotron radiation X-ray incident light, a fluorescence signal and a transmission signal to form an X-ray dual-mode test channel. The advantages of a synchrotron radiation X-ray absorption spectrum measuring platform are fully utilized, a real in-situ electrochemical detection environment is simulated, and reliable fluorescence and transmission signals are collected at the same time.

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.

The invention discloses an immunosensor for detecting Alzheimer's disease neurofilament light chain protein based on a two-dimensional metal organic framework and a preparation method of the immunosensor, and belongs to the technical field of biological detection sensors. An electrode modified with a RuMOFNSs-Ab2 conjugate and an Au-coated MoS2-Ab1 conjugate is used as a working electrode; the sandwich type electrochemical luminescence immunosensor is based on the two-dimensional RuMOFNSs / Au-coated MoS2, can be used for detecting the blood marker NfL of the Alzheimer's disease, provides a thought for the field of analysis and detection of the NfL, and also provides a reference for clinical medicine detection.

The invention relates to a RuO2-Co3O4 electro-catalytic material as well as a preparation method and application thereof. The electro-catalytic material comprises a carbon cloth substrate and a nanosheet array growing on the surface of a carbon cloth fiber, the nanosheet comprises a heterostructure which is composed of crystalline state Co3O4 particles and amorphous state RuO2. The preparation method comprises the following steps: taking activated carbon cloth as a working electrode, performing constant-potential electrodeposition in electrolyte containing cobalt salt, and then cleaning and drying to obtain Co (OH) 2 loaded carbon cloth; carrying out heat treatment on the carbon cloth for the first time to obtain carbon cloth loaded with Co3O4 nanosheets; then immersing the carbon cloth into a solution containing ruthenium salt to enable the ruthenium salt to be adsorbed on the Co3O4 nanosheet, and then cleaning and drying to obtain a precursor; and carrying out second heat treatment on the precursor to obtain the RuO2-Co3O4 heterojunction electro-catalytic material. The RuO2-Co3O4 electrocatalyst has the advantages that the RuO2-Co3O4 electrocatalyst has excellent electrocatalytic oxygen evolution activity and long-time operation stability. The preparation process is simple, the thickness of the catalyst layer can be controlled, and the process operation complexity and the requirement on equipment are reduced.

The invention relates to the technical field of medical detection equipment, and particularly provides a wearable sweat glucose detection system which comprises a sweat collecting and conveying unit which is provided with a sweat inlet and a sweat flow channel which are communicated with each other and is used for collecting and conveying sweat secreted by skin; the electric signal acquisition unit is arranged on the sweat flow channel, comprises a counter electrode, a working electrode and a reference electrode which are sequentially arranged along the flowing direction of sweat in the sweat flow channel, and is used for acquiring a real-time electric signal related to the glucose concentration; the working electrode comprises a porous alloy structure layer composed of platinum and nickel and a glucose oxidase layer located on the surface of the porous alloy structure layer; the signal processing unit is used for acquiring the real-time glucose concentration according to the real-time electric signal and a preset change curve of the electric signal about the glucose concentration; the system can effectively improve the sensitivity of glucose concentration detection and reduce the dosage of precious metal.

The invention discloses a method for synthesizing N, N-dimethylformamide through electrochemical catalytic conversion of dimethylamine. The synthesis method provided by the invention comprises the following steps: by taking dimethylamine as a single substrate, carrying out in-situ electrochemical oxidation reaction to obtain N, N-dimethylformamide; a working electrode used in the in-situ electrochemical oxidation reaction is a composite electrode loaded with a co-oxide Cr2WO6 crystal. According to the synthesis method provided by the invention, only dimethylamine is used as a substrate, and the substrate is few in variety and low in concentration, so that the raw material cost is greatly reduced, and the damage of the high-concentration substrate to a catalyst and reaction equipment is reduced; in addition, the method is high in Faraday efficiency, has important practical application value for efficient resource utilization of dimethylamine, and has far-reaching significance in the aspect of carbon neutralization at present.

The invention relates to the technical field of spectral measurement and analysis, and discloses an in-situ cell for rapid and continuous synchrotron radiation X-ray absorption spectrum measurement, the in-situ cell comprises a housing 1, one side of the housing 1 is provided with two through holes, and a counter electrode and a reference electrode are respectively fixed in the two through holes; the first shell and the second shell are correspondingly arranged, and square optical windows are arranged in the center of the second shell and the center of the first shell; the first shell and the second shell are each provided with a hole channel, the two hole channels are located on the two sides of the square optical window respectively, and a working electrode is fixedly arranged between the second shell and the first shell. The in-situ synchrotron radiation X-ray absorption spectrum measuring device is suitable for in-situ synchrotron radiation X-ray absorption spectrum measurement in a time-resolved energy dispersion / transmission mode, and through real-time supply and circular flow of the electrolyte on the surface of the working electrode, the uniformity of the X-ray penetrating through a solution layer is ensured, the elimination of product gas is accelerated, the influence of solution disturbance on a test signal is reduced, and the test stability is improved.

The invention belongs to the technical field of water environment detection, and particularly relates to a heavy metal concentration and water body flow velocity synchronous detection method for a dispersed drain outlet, which is used for synchronously detecting the heavy metal cadmium concentration and the water body flow velocity. The core of the method comprises a three-electrode sensing system consisting of a working electrode coated with a tungsten oxide film, a reference electrode and a counter electrode, and is assisted by an electrochemical workstation, a peristaltic pump, a flow cell and a signal processing module. The cadmium concentration is accurately measured through the square wave anodic stripping voltammetry, the flow velocity is synchronously detected through the open circuit potentiometry, dual-function detection is achieved through integration of the square wave anodic stripping voltammetry and the open circuit potentiometry, synchronous in-situ detection of the cadmium concentration and the water body flow velocity is achieved, and errors caused by measurement position differences are effectively eliminated. The result shows that the cadmium concentration and the dissolution peak current are in a linear relationship, and the water flow velocity logarithm and the open-circuit potential are in a linear relationship. The method designed by the invention is suitable for scattered and small sewage draining exit scenes, and effectively solves the problems of time consumption and equipment redundancy of traditional step-by-step detection. In an actual water sample test, the cadmium recovery rate is 80%-120%, the flow velocity measurement RSD is smaller than or equal to 5.0%, high reproducibility, stability and anti-interference performance are achieved, technical support is provided for real-time online evaluation of the total heavy metal emission amount, and the method has remarkable environmental monitoring application potential.

This invention proposes a patterned PEDOT:PSS hydrogel based on electrochemical pulse deposition and its preparation method. The preparation apparatus includes an electrolytic cell, an electrochemical workstation, a substrate, a conductive layer, and a sacrificial metal layer. The electrolytic cell contains a PEDOT:PSS aqueous solution. The conductive layer is connected to the working electrode of the electrochemical workstation. Under the excitation of the electrochemical workstation, the sacrificial metal layer forms metal cations, which electrostatically adsorb PEDOT:PSS in the PEDOT:PSS aqueous solution, ultimately forming a patterned shape on the conductive layer using the sacrificial metal layer as a template. This invention achieves thickness control of the patterned PEDOT:PSS hydrogel by adjusting various deposition parameters. The preparation process is simple, low-cost, and highly practical, fully realizing the patterning of PEDOT:PSS hydrogels.

The application relates to the development and technical field of electrocatalysts, and discloses a benzothiadiazole modified single-atom zirconium-doped metal copper electrode material and a preparation method and application thereof. The preparation method comprises the following steps: dissolving inorganic copper salt and inorganic zirconium salt, adding the inorganic copper salt and the inorganic zirconium salt into an alkaline solution, and performing hydrothermal reaction to obtain a single-atom zirconium-doped copper oxide precursor; dissolving benzothiadiazole, adding the benzothiadiazole into a dispersion solution of the single-atom zirconium-doped copper oxide precursor to obtain a mixed solution; spraying the mixed solution on a polytetrafluoroethylene film substrate loaded with copper nanoparticles to obtain a benzothiadiazole modified single-atom zirconium-doped copper oxide precursor electrode material; and performing electrochemical reduction treatment on the benzothiadiazole modified single-atom zirconium-doped copper oxide precursor electrode material to obtain a benzothiadiazole modified single-atom zirconium-doped metal copper electrode material. The electrode material is applied to an electro-reduction carbon dioxide reaction as a working electrode, exhibits excellent electro-reduction CO2 performance in an acidic environment, and realizes high-value-added C 2+ product with high selectivity.

The invention relates to the technical field of secondary battery detection, and provides a secondary battery in-situ detection device and method.The secondary battery in-situ detection device comprises an in-situ battery, a precise three-dimensional moving platform, a Fourier transform microscopic infrared spectrometer and an electrochemical workstation, and the in-situ battery comprises an upper cover, an optical window, a middle supporting body, a working electrode and other components; micro-area positioning is realized through the three-dimensional mobile platform, the synchronization system guarantees time sequence synchronization of spectrum and electrochemical data, a mercury-cadmium-tellurium detector of the spectrometer captures weak infrared signals, in-situ, dynamic and micro-area detection of interface reaction of the secondary battery is finally realized, and the detection accuracy and reliability are effectively improved.

The invention relates to a preparation method of a trace Fe optimized Ru nano-catalyst and application of the trace Fe optimized Ru nano-catalyst in hydrodechlorination reaction of parachlorophenol. The preparation method comprises the following specific steps: firstly, dissolving ruthenium chloride hydrate and ferric trichloride into ethylene glycol, adding PVP (Polyvinyl Pyrrolidone) into the solution, fully mixing, adjusting the pH value of the solution to 3-4, transferring into a glass bottle, and heating and reacting in an oil bath pan at 180 DEG C; and centrifuging, washing and drying the obtained product to obtain a black powdery solid, namely the Ru-Fe nano-catalyst. The hydrodechlorination process is carried out in a double-chamber electrolytic tank separated by a Nafion 117 membrane, an electrolyte is a Na2SO4 solution, a Ru-Fe electrode taking carbon cloth as a carrier is used as a working electrode, a Pt sheet is used as a counter electrode, and an Ag / AgCl electrode is used as a reference electrode. The Ru-Fe nano-catalyst provided by the invention has the advantages of stable structure, uniform metal distribution and excellent electron synergistic effect, and can efficiently catalyze hydrodechlorination of p-chlorophenol and generate cyclohexanol. The preparation process is simple, convenient and environment-friendly, has a good industrial application prospect, and is particularly suitable for green treatment and resource conversion of chlorine-containing organic wastewater.

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.

This invention discloses a high salt spray resistant stainless steel material and its preparation method, relating to the field of metal materials technology. In preparing the high salt spray resistant stainless steel material, the present invention involves weighing raw materials including Cr, Ni, Al, Si, Mn, Mo, Nb, C, Zr, Ti, and Fe according to specific mass percentages, and obtaining an alloy ingot through melting and casting; subjecting the alloy ingot to homogenization heat treatment and forging to obtain a stainless steel matrix; using the stainless steel matrix as the working electrode, surface modification is performed through cathodic polarization treatment in an electrolyte containing amidated carbon nanotube-boron nitride composite filler, thereby obtaining the high salt spray resistant stainless steel material. The high salt spray resistant stainless steel material prepared by this invention exhibits excellent salt spray corrosion resistance.