36 results about "Silver chloride electrode" patented technology

The utility model discloses an anti-corrosion sensor for monitoring corrosion of an in-service FPS0 ballast tank, which comprises a sensor shell, a waterproof cable extending into an inner cavity is arranged on the sensor shell, a silver chloride electrode is arranged at the bottom of the sensor shell, one end of the silver chloride electrode extends into the inner cavity and is electrically connected with the waterproof cable in the inner cavity, and the other end of the silver chloride electrode extends downwards. A flange plate used for sealing the inner cavity is arranged at the top end of the sensor shell, a connecting hole allowing the waterproof cable to extend out is formed in the flange plate, a first connecting part used for sealing and fixing the waterproof cable is arranged on the flange plate, and a second connecting part used for sealing and fixing the silver chloride electrode is arranged at the bottom end of the sensor shell. And the surface of the sensor shell is provided with a fixed connecting device for quickly installing the sensor shell and a rib plate on the inner wall of the ballast tank. Installation can be achieved in the offshore FPSO operation period, damage to a ship body is avoided, thermal treatment is not needed, and rapid installation and replacement can be achieved.

A hydrogen storage alloy-based all-solid-state pH sensor is disclosed, comprising a counter electrode, a working electrode, a reference electrode, and a flexible substrate. The counter electrode is a platinum electrode, the working electrode is a hydrogen storage alloy electrode, the reference electrode is a silver / silver chloride electrode, and the flexible substrate is PET. Using the hydrogen-storage titanium-iron alloy electrode as the working electrode and an Ag|AgCl electrode as the reference electrode, the potential of the test solution is measured, and the pH value of the test solution is obtained through a standard curve. This invention explored the optimal ratio of titanium and iron elements through a series of experiments, enabling the sensor to simultaneously achieve both accuracy and stability. While ensuring good hydrogen ion response, optimal stability is obtained by adjusting the titanium-iron element ratio, making it suitable for long-term real-time online in vivo pH detection.

The invention relates to the technical field of oxygen free radical detection, in particular to a manufacturing process of a portable and reliable oxygen free radical detector. Comprising the following steps: mixing superoxide dismutase, potassium ferricyanide, an isothiazolinone preservative, hexammine ruthenium chloride, polyethylene glycol octylphenol ether, trehalose and bovine serum albumin, and uniformly stirring to prepare an enzyme preparation; mixing an enzyme preparation with the high polymer material solution to form reagent layer slurry with viscosity; uniformly coating the reagent layer slurry on a substrate material, and drying; printing an electrode material on the substrate material to form a working electrode and a counter electrode; the silver electrode is placed in an electrolyte containing chloride ions, potential is applied, the silver surface is subjected to a chlorination reaction, and a silver / silver chloride electrode is formed; covering the reagent layer above the electrode, tightly combining the reagent layer with the electrode in a sticking or hot pressing manner, and cutting to obtain the test paper; the prepared portable oxygen free radical detector can be used for conveniently and efficiently detecting oxygen free radicals of a human body at low cost.

A single-use disposable potentiometric reference sensor includes an insulating base substrate; a reference electrode disposed on the insulating base substrate, wherein the reference electrode is a silver-silver chloride electrode; an inner layer disposed on the reference electrode, wherein the inner layer is an amorphous salt layer including an amorphous polysaccharide and a salt having equally-mobility cations and anions; and a semi-permeable cover membrane disposed over the inner layer, wherein the semi-permeable cover membrane has water vapor and ion permeability.

An electrode that includes: a substrate; a silver / silver chloride electrode section on at least a part of a surface of the substrate; and a film containing particles of a two-dimensional material including one layer or a plurality of layers on at least a part of a surface of the silver / silver chloride electrode section exposed to an external environment, wherein the one layer or the plurality of layers include a layer body represented by: MmXn, wherein M is one or more metals of Group 3, 4, 5, 6, and 7 and includes Ti, X is a carbon atom, a nitrogen atom, or a combination thereof, n is 1 to 4, and m is more than n but not more than 5; and a modifier or terminal T is present on a surface of the layer body.

The invention discloses a wearable molecular imprinting sensor and application thereof in cortisol detection, and belongs to the technical field of electrochemical analysis and detection. The molecular imprinting sensor sequentially comprises a sweat absorbing pad, a three-electrode system, an annular polydimethylsiloxane mold and a medical bonding patch from the skin contact surface to the outside, the front surface of the sweat-absorbent pad is in contact with the skin, and KCl and K3 [Fe (CN) 6] are adsorbed on the back surface of the sweat-absorbent pad; the three-electrode system takes an MIP / AuNWs / PET sensor as a working electrode, a platinum wire as a counter electrode and a silver / silver chloride electrode as a reference electrode; the annular polydimethylsiloxane mold and the medical adhesive patch form a sweat collection chamber. The molecular imprinting sensor based on in-situ growth of gold nanowires (AuNWs) on the porous PET film is used for rapidly detecting the cortisol level in human sweat in real time, natural receptor ligand interaction is simulated through the molecular imprinting technology, and high-specificity recognition of cortisol is achieved.

A sterilization system for sterilizing a biofilm formed on an object, the sterilization system being provided with: a sterilization composition containing an organic compound having a standard oxidation-reduction potential (pH7) of-0.7 V to-0.2 V and water; a bactericidal composition supply unit for holding the bactericidal composition; a nozzle for supplying the bactericidal composition held by the bactericidal composition supply unit to the biofilm; an electrode provided on the nozzle so as to be in contact with the bactericidal composition; and a control unit which is connected to the electrode and which applies, to the electrode, a potential that is greater than the lower limit value of the potential window and that is-0.4 V or less based on the silver / silver chloride electrode.

An electrode having a substrate, a silver / silver chloride electrode part, and a film containing particles of a two-dimensional material, the particles of the two-dimensional material including one or more layers, the one or more layers including a layer body represented by the following formula, and a modification or terminal T present on a surface of the layer body, mmXn (in the formula, M is at least one type of group 3, 4, 5, 6, and 7 metal and contains Ti, X is a carbon atom, a nitrogen atom, or a combination thereof, n is 1 to 4, and m is greater than n and 5 or less) (T is at least one type selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom).

A single-use disposable potentiometric reference sensor includes an insulating base substrate, a reference electrode disposed on the insulating base substrate where the reference electrode is a silver-silver chloride electrode, an internal layer disposed on the reference electrode where the internal layer is an amorphous salt layer that includes an amorphous polysaccharide and a salt having equi-mobility cations and anions, and a semipermeable cover membrane disposed over the internal layer where the semipermeable cover membrane has water vapor and ion permeability.

The application provides a PolyA-mediated label-free electrochemical sensor and a preparation method and application thereof, and relates to the technical field of electrochemical biosensing. The sensor adopts a three-electrode system as a whole working system, the three-electrode system comprises a working electrode, a reference electrode and an auxiliary electrode; the working electrode is a PolyA-mediated label-free electrochemical aptamer sensor, an AFB1 aptamer is used as a biological recognition element, the biological recognition element is paired with a DNA segment containing a PolyA sequence in a complementary manner, and then is fixed on the surface of a gold electrode by the specific affinity between PolyA and gold; the reference electrode is a silver chloride electrode, and the auxiliary electrode is a platinum wire electrode. The PolyA-mediated label-free electrochemical sensor has the advantages of high detection sensitivity, strong specificity, simple operation, fast detection speed and low cost.

A method for forming an Ag / AgCl coated electrode includes providing a polymeric electrode substrate made of Acrylonitrile Butadiene Styrene (ABS). A layer of silver (Ag) is deposited on the polymeric electrode substrate using physical vapor deposition (PVD) to form an Ag coated electrode. The layer of Ag is deposited to a first thickness by sputtering an Ag target onto the polymeric electrode substrate. The Ag coated electrode is then converted to a layer of silver / silver chloride (Ag / AgCl) by dipping it into a conversion solution. The resulting Ag / AgCl coated surface electrode provides improved performance and stability for various applications.

The present invention belongs to the field of medical electrophysiology, and provides an electrode, an electrode clip, and a preparation method for in vitro electrocardiogram monitoring. The present invention uses carbon foam as the substrate of the electrode, adopts an electrochemical deposition method to deposit nanosilver on the carbon foam, and then performs an electrochemical chlorination method to obtain silver chloride. Finally, polyvinyl alcohol hydrogel is poured to prepare a polyvinyl alcohol hydrogel-carbon foam-silver / silver chloride electrode. The electrode prepared by the present invention has the advantages of excellent electrical conductivity, long service life, not easy to fall off, good softness, etc. The polyvinyl alcohol hydrogel-carbon foam-silver / silver chloride electrode prepared by the present invention is further improved to prepare a polyvinyl alcohol hydrogel-carbon foam-silver / silver chloride electrode clip that can be used for electrocardiogram monitoring, achieving the purpose of in vitro detection with non-invasive, excellent conductivity, high sensitivity, good stability, and long service life. The electrode clip of the present invention will replace traditional acupuncture to detect electrocardiogram changes in mice, and provide a meaningful exploration for in vitro non-invasive electrocardiogram detection.

This invention relates to the field of pollutant detection technology, and discloses a method for preparing bimetallic selenides and its non-enzymatic electrochemical sensor and applications. The reference electrode of the non-enzymatic electrochemical sensor is a silver / silver chloride electrode, the auxiliary electrode is a platinum wire electrode, and the working electrode is a glassy carbon composite electrode containing a bimetallic selenide coating. The bimetallic selenide is CuInSe2, which exhibits sensitivity in identifying parathion. This improves the accuracy and ease of operation in detecting parathion and reduces the detection cost. The method for preparing the bimetallic selenide proposed in this invention uses ethylamine and N,N-dimethylformamide as solvents, and through a solvothermal reaction, reacts cuprous chloride, indium chloride, and selenium powder to generate CuInSe2, which has the advantages of high reaction efficiency and low manufacturing cost.

A vital signs monitoring patch (VSM) with an integrated display includes a user access layer for accessing a display portion and a first printed silver-silver chloride (Ag-AgCl) electrode. A polyethylene foam layer includes a battery and a plunger cutout. A printed circuit board assembly (PCBA) layer includes a vital signs monitoring sensor and a battery and is connected to the first and second printed Ag-AgCl electrodes. The polyethylene foam layer is bonded to the user access layer and the PCBA layer. The sensor layer includes a reflective oximeter assembly and a second printed Ag-AgCl electrode. A hydrogel conductive adhesive is used to interact between the user's skin and the second printed Ag-AgCl electrode. A medical tape layer is bonded to the user's skin and the sensor layer. The plunger is connected to the PCBA layer and is configured to power the VSM, wherein user access to the first printed Ag-AgCl electrode completes a circuit with the second printed Ag-AgCl electrode.

A method for forming an Ag / AgCl coated electrode includes providing a polymeric electrode substrate made of Acrylonitrile Butadiene Styrene (ABS). A layer of silver (Ag) is deposited on the polymeric electrode substrate using physical vapor deposition (PVD) to form an Ag coated electrode. The layer of Ag is deposited to a first thickness by sputtering an Ag target onto the polymeric electrode substrate. The Ag coated electrode is then converted to a layer of silver / silver chloride (Ag / AgCl) by dipping it into a conversion solution. The resulting Ag / AgCl coated surface electrode provides improved performance and stability for various applications.

A single-use disposable potentiometer reference sensor includes: an insulating bottom substrate; the reference electrode is arranged on the insulating bottom substrate, and the reference electrode is a silver-silver chloride electrode; an inner layer disposed on the reference electrode, where the inner layer is an amorphous salt layer comprising an amorphous polysaccharide and a salt having an equal mobility cation and anion; and a semi-permeable cover film disposed over the inner layer, where the semi-permeable cover film has water vapor and ion permeability.

A sterilization method for bacteria contained in a biofilm, including: preparing a composition containing an organic compound having the standard oxidation-reduction potential (pH 7) of -0.7 V to -0.2 V, and water; bringing the composition into contact with the biofilm and a conductor; and applying a potential that is higher than the lower limit value of the potential window and that is -0.4 V or lower with respect to a silver / silver chloride electrode to the conductor.

The invention relates to the technical field of oxygen free radical detection, and in particular to a manufacturing process of a portable oxygen free radical detector. The method comprises the following steps: mixing superoxide dismutase, potassium ferricyanide, an isothiazolinone preservative, hexaammineruthenium chloride, polyethylene glycol octylphenyl ether, trehalose and bovine serum albumin, stirring and mixing to obtain an enzyme preparation; mixing the enzyme preparation with a polymer material solution to form a reagent layer slurry with viscosity; uniformly coating the reagent layer slurry on a base material, and drying; printing an electrode material on the base material to form a working electrode and a counter electrode; placing a silver electrode in an electrolyte containing chloride ions, applying a potential to cause a chlorination reaction on the silver surface, and forming a silver / silver chloride electrode; covering the electrode with a reagent layer, bonding them tightly by gluing or hot pressing, and then cutting to obtain a test paper. The portable oxygen free radical detector thus obtained can detect oxygen free radicals in the human body conveniently, efficiently and at low cost.

A single-use disposable potentiometric reference sensor includes an insulating base substrate, a reference electrode disposed on the insulating base substrate where the reference electrode is a silver-silver chloride electrode, an internal layer disposed on the reference electrode where the internal layer is an amorphous salt layer that includes an amorphous polysaccharide and a salt having equi-mobility cations and anions, and a semipermeable cover membrane disposed over the internal layer where the semipermeable cover membrane has water vapor and ion permeability.

The invention relates to the technical field of oxygen free radical detection, in particular to a manufacturing process of a portable oxygen free radical detector. Comprising the following steps: mixing superoxide dismutase, potassium ferricyanide, an isothiazolinone preservative, hexammine ruthenium chloride, polyethylene glycol octylphenol ether, trehalose and bovine serum albumin, and uniformly stirring to prepare an enzyme preparation; mixing an enzyme preparation with the high polymer material solution to form reagent layer slurry with viscosity; uniformly coating the reagent layer slurry on a substrate material, and drying; printing an electrode material on the substrate material to form a working electrode and a counter electrode; the silver electrode is placed in an electrolyte containing chloride ions, potential is applied, the silver surface is subjected to a chlorination reaction, and a silver / silver chloride electrode is formed; covering the reagent layer above the electrode, tightly combining the reagent layer with the electrode in a sticking or hot pressing manner, and cutting to obtain the test paper; the prepared portable oxygen free radical detector can be used for conveniently and efficiently detecting oxygen free radicals of a human body at low cost.

This invention provides a method for preparing a bimetallic cathode and its application in the reduction and degradation of polyfluorinated compounds, including the preparation of a hydrophilic carbon cloth electrode and an electrodeposition Cu source stock solution. The Pd source stock solution is prepared using ultrasonic-assisted dissolution. The hydrophilic carbon cloth electrode is used as the working electrode, a saturated silver chloride electrode as the reference electrode, and a platinum sheet electrode as the counter electrode, connected to an electrochemical workstation. Preparation... 5 mM Cu(NO3)2 and 0.5 M H2SO4 A mixed deposition solution was used to deposit Cu onto the surface of a hydrophilic carbon cloth electrode, resulting in a Cu-modified carbon cloth electrode. This was achieved through a substitution reaction. Pd0 Nanoparticles are loaded onto the surface of a Cu-modified carbon cloth electrode to obtain a bimetallic modified electrode. This invention allows for the direct in-situ synthesis of CuPd bimetals on a low-cost carbon substrate. The operation is simple, the bimetallic loading method consumes less energy, requires no additional chemical reagents, and achieves high degradation, defluorination, and dechlorination rates of chlorinated polyfluorinated compounds in the aquatic environment at relatively low voltage, thus achieving a good degradation effect.

Provided is a method for obtaining a salt aqueous solution containing nickel and cobalt by leaching nickel and cobalt in a shorter leaching time while effectively separating copper, nickel, and cobalt from a mixture containing nickel, cobalt, and copper, such as a highly corrosion-resistant alloy obtained by dry-treating a waste battery material.　The present invention is a method for producing a nickel and cobalt salt aqueous solution, the method comprising a step for bringing a mixture containing nickel, cobalt, and copper into contact with a mineral acid under conditions in which a sulfurizing agent is present, wherein the mixture is immersed in a mineral acid in an amount of 1 equivalent or more until the oxidation-reduction potential, at which a silver / silver chloride electrode is used as a reference electrode, reaches 70 mV after having reached a minimum value, and thereafter, a sulfurizing agent is added to the solution, whereby nickel and cobalt are leached from the mixture.

The application discloses a microneedle electrochemical sensor for chlorine ion detection and a preparation method thereof. The microneedle electrochemical sensor is a two-electrode system, comprising a working electrode and a reference electrode. The base materials of the two electrodes are SU-8 photoresist microneedle arrays. A conductive layer and a silver / silver chloride electrode layer are sequentially arranged on the surfaces of the two ends of the base materials from bottom to top. A stable film layer is arranged on the surface of the silver / silver chloride electrode layer at one end of the reference electrode. The stable film layer is prepared by using an alcohol solution of NaCl, polyvinyl butyl (PVB), poloxamer and multi-walled carbon nanotubes. The microneedle electrochemical sensor adopts an integrated microneedle array design, has the advantages of minimally invasive and portability, and is expected to realize rapid detection of chlorine ions in various body fluids such as serum, sweat and interstitial fluid.

The invention belongs to the technical field of nerve diagnosis, and particularly relates to a multi-index nerve injury combined diagnostic instrument which solves the problems that in the prior art, the function is single, and the operation precision is insufficient. A bed body is arranged, one side of the bed body is provided with an electrocardio sensor and a side fixing frame, and the top of the side fixing frame is provided with a universal rotating mechanism; a nerve diagnosis assembly is installed at one end of the universal rotating mechanism, the nerve diagnosis assembly is composed of a face diagnosis assembly and a diagnosis device fixing assembly, and through the arrangement of the structures such as the electrocardio sensor and the nerve diagnosis assembly, the electrocardio sensor is of a composite structure of silver and silver chloride electrode plates and a conductive fiber layer; a finger tip bio-electricity signal is accurately captured; the nerve diagnosis assembly integrates a respiratory diagnostor and a side auxiliary fixing support, respiratory rhythm change and head stability parameters are synchronously obtained through an airflow pressure sensor and a telescopic sleeve structure, and a comprehensive evaluation system of the nerve function is formed.

To provide a manufacturing method of a nickel sulfate aqueous solution that can reduce nickel loss.SOLUTION: A manufacturing method of a nickel sulfate aqueous solution comprises a sulfidation step of making a crude nickel sulfate aqueous solution comprising zinc react with a sulfurizing agent by batch processing to generate a sulfide precipitate comprising zinc and obtain a sulfidation slurry, and a first solid-liquid separation step of removing the sulfide precipitate from the sulfidation slurry by solid-liquid separation to obtain a sulfidation final liquid. In the sulfidation step, the batch processing is terminated when the oxidation-reduction potential of the crude nickel sulfate aqueous solution decreases to a target value. The target value is a value predetermined within a range of 0 to 60 mV of oxidation-reduction potential (silver / silver chloride electrode standard). The sulfidation reaction is terminated when the oxidation-reduction potential of the crude nickel sulfate aqueous solution decreases to the target value, and thus precipitation of nickel is suppressed, and nickel loss can be reduced.SELECTED DRAWING: Figure 1

The application provides a copper-nickel alloy catalytic electrode and a preparation method and application thereof. The copper-nickel alloy catalytic electrode comprises a nickel foam substrate and a copper-nickel alloy vertically loaded on the surface of the nickel foam substrate, the molecular formula of the copper-nickel alloy is Cu 0.81 Ni 0.19 , and the copper-nickel alloy is a nanostructure with a dendritic morphology. The preparation method comprises the following steps: adding copper sulfate, nickel sulfate and ammonium sulfate into water, stirring uniformly to obtain an electrolyte; taking the nickel foam substrate as a working electrode, a saturated silver-silver chloride electrode as a reference electrode, a platinum sheet or a graphite rod electrode as a counter electrode, applying a constant current density to the working electrode to obtain a preset electrode; alternately cleaning the preset electrode with ethanol and distilled water, and vacuum drying to obtain the copper-nickel alloy catalytic electrode. The copper-nickel alloy catalytic electrode prepared by the application has a dendritic morphology, rich active sites and a high specific surface area, and has excellent catalytic activity and stability in the hydrogen production by the electro-catalytic coupling hydrogen evolution reaction of cyclohexanone synthesis adipic acid.

The present invention relates to a quantity measuring device, an electrode regeneration program, and an electrode regeneration method that can suppress deterioration of a silver / silver chloride electrode. [Solution] The device comprises a sensor including an electrode unit capable of measuring the quantity value of the liquid to be measured, and an irradiation unit capable of irradiating ultraviolet light, the electrode unit having a silver / silver chloride electrode, and the irradiation unit configured to irradiate ultraviolet light onto the silver / silver chloride electrode.

The invention provides a forest radar system based on tree bioelectric current and a magnetic field, and relates to the technical field of monitoring. The forest radar system based on the tree bioelectric current and the magnetic field comprises a bioelectric current sensor used for collecting tree bioelectric current signals, the bioelectric current sensor is of a structure attached to the surface of a tree trunk in a non-intrusive mode, and an electrode of the bioelectric current sensor is made of a high-sensitivity silver-silver chloride electrode material; the surface of the electrode is subjected to special micro-nano structure treatment so as to increase the contact surface with the surface of a tree and improve the conductivity, the signal amplification and adjustment circuit is used for amplifying and filtering a collected weak bioelectric current signal, and the amplification factor can be adjusted between 100-1000 times. The bioelectric current sensor is of a non-intrusive structure, is attached to the surface of a tree and cannot damage the tree, a shell of the bioelectric current sensor is made of weather-resistant engineering plastics, the bioelectric current sensor has waterproof, dustproof and ultraviolet-proof performance, and the bioelectric current sensor can stably work in a severe outdoor environment for a long time.

The application discloses a method for removing organic pollutants by Fenton reaction path of floc, comprising the following steps: adding iron sulfate into an organic pollutant solution, and passing oxygen to keep the reaction system in oxygen saturation state; building a three-electrode system by taking a carbon-based titanium dioxide catalytic electrode as a working electrode, a graphite electrode as a counter electrode, and a standard silver chloride electrode as a reference electrode, applying voltage to the working electrode through an electrochemical workstation to carry out an electro-Fenton-like reaction; after the power is turned off, continuing to react for a period of time, and removing the pollutants through flocculation and sedimentation of the floc by self-catalysis of the floc, and finally filtering to remove the pollutants. The method disclosed by the application realizes activation of Fe floc by electrocatalysis to introduce •OH without adjusting pH value and adding H2O2, realizes efficient removal of organic pollutants by self-catalysis of the floc, provides a method for resource utilization of iron floc, and prolongs the Fenton reaction time.

A reference electrode for dopamine detection and its preparation method belong to the field of electrochemistry. In the present invention, carbon cloth is used as the electrode substrate material, silver is deposited by electrochemistry deposition method to obtain a carbon cloth-silver electrode, and then the carbon cloth-silver electrode is chlorinated by electrochemistry chlorination method to prepare a carbon cloth-silver / silver chloride electrode. Finally, a polyvinyl alcohol hydrogel is cast on its surface to obtain a polyvinyl alcohol hydrogel-carbon cloth-silver / silver chloride reference electrode. The reference electrode prepared in the present invention has good conductivity and high softness, and is improved in terms of electrode stability and service life. The reference electrode of the present invention can be used to detect dopamine and obtain good detection results.