94 results about "Electrochemical polymerization" patented technology

A graphene neural electrode, a preparation method therefor, and use thereof. The preparation method comprises the following steps: (1) performing laser printing on a polyimide film according to a preset electrode pattern to obtain laser-induced graphene; (2) subjecting the laser-induced graphene to transfer printing to a water-soluble adhesive tape, then arranging a thermoplastic polymer thin film on one side of the laser-induced graphene away from the water-soluble adhesive tape, and then removing the water-soluble adhesive tape, so that the laser-induced graphene is subjected to transfer printing to the thermoplastic polymer thin film to obtain a first prefabricated product; (3) placing the first prefabricated product in a conductive polymer monomer solution for electrochemical polymerization, and forming a conductive polymer layer to obtain a second prefabricated product; and (4) arranging a thermoplastic polymer packaging layer on the conductive polymer layer of the second prefabricated product to obtain the graphene neural electrode. The graphene neural electrode prepared by using the method has excellent flexible characteristics and mechanical properties, high mechanical and electrochemical stability, and low electrochemical impedance, thereby achieving long-term stable signal monitoring in an organism.

The application discloses a preparation method of a high-density and high-stability conductive polymer film based on electrochemical polymerization, and comprises the following steps: using an oxidant solution and a BFDO monomer solution to pretreat a formed foil to obtain a working electrode, then immersing the working electrode and a reference electrode into an electrolyte to perform electrochemical oxidation polymerization, and obtaining the high-density and high-stability conductive polymer film based on electrochemical polymerization. The pretreated formed foil containing N-type conductive polymer PBFDO is prepared by using a chemical in-situ polymerization method on the formed foil, and when the pretreated formed foil is applied in the field of capacitors, the conductivity and electron transport capacity of the capacitor can be improved, and the stability problem caused by the coupling of positive and negative charges in the traditional capacitor is greatly improved.

The invention relates to the field of lithium-sulfur batteries, and discloses a preparation method of a lithium-sulfur battery electrode modification material, which comprises the following steps: applying a thiophene unit-containing electrolyte additive to a lithium-sulfur battery; and preparing the electrode modification layer of the lithium-sulfur battery through an in-situ electrochemical polymerization reaction. The lithium-sulfur battery electrode modification material provided by the invention is beneficial to promoting conversion of polysulfide and inhibiting the shuttle effect of the polysulfide, and the overall electrochemical performance of the lithium-sulfur battery can be remarkably improved. In addition, the method can also be applied to the fields of sodium-sulfur batteries, potassium-sulfur batteries and other metal-sulfur batteries.

The invention relates to the field of electrochromic materials, in particular to a blue and second near-infrared (NIR-II) transmission electrochromic high polymer material based on propene dioxythiophene (ProDOT) and a triphenylamine derivative, and particularly relates to an electrochromic high polymer material based on propene dioxythiophene (ProDOT) and a triphenylamine derivative. The method is suitable for multiple fields of display screens, building glass, coating invisible materials and the like. The invention relates to an electrochromic material based on propenyldioxythiophene (ProDOT) and a triphenylamine derivative, which has a structure shown in the following I-III: # imgabs0, and an electrochromic polymer with red oxygen electrochemical and electrochromic characteristics is prepared by carrying out electrochemical polymerization on three monomers (ProDOT-TPA, ProDOT-TPPA and ProDOT-2TPA). According to the present invention, the electrochemical research results show that the ProDOT-TPA has low initial oxidation potential (0.59 V), such that the high-quality polymer can be easily obtained; the optimized polymer [P (ProDOT-TPA)] shows the optical contrast ratio of 14.38% at the position of 400 nm and the optical contrast ratio of 49.55% at the position of 1100 nm in an electrochromic device, and has remarkable electrochromic performance.

This invention discloses a method for preparing polyether / polyester-polyether random copolymers by electrochemical polymerization. Under energized conditions, the lactone and epoxide monomers undergo simultaneous ring-opening copolymerization. By adjusting the amount of monomers and the reaction time, the composition and proportion of polyester and polyether in the resulting copolymer can be effectively controlled. No catalyst or initiator is used in the polymerization reaction, and the reaction is stable at room temperature. The polyether / polyester-polyether random copolymers prepared by this method have a molecular weight of 10 kg / mol–45 kg / mol and a molecular weight distribution index of 1.10–1.30. The electrochemical polymerization method for preparing polyester-polyether random copolymers provided by this invention is green, pollution-free, and easy to operate, showing promising application prospects.

The application belongs to the field of membrane separation technology, and provides a preparation method and application method of a two-dimensional MXene-conductive polymer layered separation membrane with adjustable pore size. The two-dimensional MXene-conductive polymer layered separation membrane is a two-dimensional MXene membrane prepared by vacuum-assisted filtration, and a conductive polymer monomer is embedded between the membrane layers, and then prepared by in-situ electrochemical polymerization. The advantages are that the preparation is simple and easy to operate, and no expensive equipment is needed. The conductive polymer in the membrane layer greatly improves the mechanical stability and oxidation resistance of the membrane structure, and the conductive performance and electrochemical capacitance characteristics are excellent. The membrane can be used as a desalination membrane and a conductive electrode at the same time, an electric potential can be applied to the membrane surface, the membrane pore size can be controlled by electrochemical regulation, and the selective separation of monovalent salt, divalent salt and dye molecules can be realized.

This invention relates to the field of electrochromic thin film technology, and more particularly to a dithiophene derivative, its preparation method, and its application, as well as an electrochromic thin film and its preparation method. This invention involves reacting dithiophene with tributyltin chloride to generate tin-modified dithiophene, reacting dithiophene with isopropanol pinacol boronic acid ester to generate boron-modified dithiophene, and then reacting the tin-modified or boron-modified dithiophene with 1,4-diiodo-2,5-bis-(6-hexynyl)-benzene to generate 1,4-dithiophene-2,5-bis-(6-hexynyl)-benzene. This product is then reacted with dimethylboron hydride generated from lithium aluminum hydride and dimethoxyethane to finally obtain the dithiophene derivative. This derivative can be applied in electrochromic thin films. This invention successfully prepares an electrochromic thin film with fast response and fluoride ion detection capability by electrochemically polymerizing the dithiophene derivative.

The invention relates to a high-valence metal organic salt and metal inorganic compound composite electrolyte additive, an electrolyte containing the additive and application, and belongs to the technical field of battery materials. According to the invention, the organic salt with high-valence metal cations and the inorganic halide / chalcogenide are introduced into the conventional electrolyte at the same time, so that the defects of an electrode / electrolyte interface layer can be dynamically repaired. Anions in the high-valence metal organic salt are organic ions capable of generating auto-polymerization or electrochemical polymerization, and high-valence metal cations have oxidability, can promote auto-polymerization or electrochemical polymerization of the organic anions and / or the electrolyte solvent, and can be reduced by a metal negative electrode with strong reducing capacity. Meanwhile, inorganic halide / chalcogenide (such as ZnCl2, ZnI2, MgS2 and the like) can induce formation of a passivation layer on the surface of the negative electrode, the deposition and dissolution behaviors of sodium ions on the surface of the electrode are optimized, dendritic crystal growth is prevented, and corrosion of electrolyte and polysulfide is prevented. The composite electrolyte additive meets the multi-scene requirements of power batteries, energy storage batteries and the like.

Disclosed is a method of electrochemical delamination of polymeric films from metallic articles. Also disclosed are systems for achieving the same.

The present invention discloses an electrochemical biosensor for detecting C-reactive protein in plasma and whole blood. The electrode interface of the electrochemical biosensor is constructed based on electrochemical polymerization and electrochemical deposition. It is simple and rapid to prepare, requires minimal reagents, has low human toxicity, and is environmentally friendly and pollution-free. The sensor exhibits a good linear relationship with the electrical signal detected by the sensor within a C-reactive protein concentration range of 0.1 to 25 μg / mL, with a detection limit of 0.096 μg / mL. The sensor exhibits high sensitivity, simple operation, high selectivity, environmental friendliness, and high biosafety. It facilitates the rapid diagnosis of sepsis and the immediate monitoring of disease progression. It also provides technical support for the development of biosensors for biomarker detection in complex media.

The invention belongs to the technical field of electrochromic materials, and particularly relates to a PEDOT (poly (3, 4-ethylenedioxythiophene)) photonic crystal film for enhancing electrochromic performance based on electronegativity of MXene and a preparation method of the PEDOT photonic crystal film. The PEDOT photonic crystal film with a periodic porous structure is prepared by combining electrochemical polymerization with a template sacrifice process. The conductivity and the structural orderliness of the thin film are effectively improved through synergistic doping; wherein the electronegativity of MXene can significantly promote the immigration / emigration of small-size cations in the electrochromism process, the porous structure of the photonic crystal further accelerates ion transmission and widens the electrochromism response range, and meanwhile, the regulation and control effect is visually reflected in the form of photonic band gaps.

The application belongs to the technical field of organic synthesis, and provides a star structure carbazole derivative, a preparation method thereof and a carbazole conductive polymer. The application obtains an intermediate by mixing 10-phenyl-10H-phenothiazine, N-bromosuccinimide and a first organic solvent for reaction; obtains the star structure carbazole derivative by mixing the intermediate, 9H-carbazole-2-boronic acid pinacol ester, tetrakis(triphenylphosphine)palladium, an accelerator and a second organic solvent for reaction; and obtains the carbazole conductive polymer by mixing the star structure carbazole derivative and an electrolyte solution for cyclic voltammetry electrochemical polymerization. The method is simple, has few by-products, and the star structure carbazole derivative obtained by the method is a non-coplanar star structure, which is beneficial to the embedding and discharging of electrolyte ions, so that the carbazole conductive polymer has excellent electrochemical performance and energy storage properties, and the conductive polymer also has excellent electrochromic performance.

The invention concerns the development of molecularly imprinted polymer for label-free capacitive sensing application. The method outlined by the invention involves several steps: a) Pre-treating the surface of the working electrode; b) Electrochemical polymerizing a monomer solution in an electrolyte buffer containing the target template molecule to form an imprinting template film on the electrode surface; c) Washing the electrode to remove unbound molecules; d) Characterizing the formed imprinting template film by cyclic voltammetry in a supporting electrolyte solution to determine its half-wave potential; e) Forming the molecularly imprinted polymer electrode by removing the target template molecule from the synthesized polymer; f) Incubating the obtained molecularly imprinted polymer with the target template for a specified duration; g) Detecting the target template molecule using capacitance-derived electrochemical impedance spectroscopy. This method presents significant advantages in terms of specificity, sensitivity, and stability, rendering it highly applicable across numerous industries for enhancing detection, monitoring, and diagnostic capabilities.

The invention discloses a high-molecular mediator catalyst, a composite positive electrode material and application of the composite positive electrode material. The high-molecular mediator catalyst is prepared from an organic micromolecular monomer with oxidation-reduction activity through a chemical or electrochemical polymerization method. A composite positive electrode material of a rechargeable metal-air battery or a lithium-sulfur battery is composed of the polymer mediator catalyst, a carbon material and a binder. The high-molecular mediator is formed by polymerizing organic micromolecular monomers through a chemical or electrochemical method, has a multifunctional catalytic characteristic, and is compounded with a high-pore carbon material to form a composite positive electrode material with a synergistic effect, so that the charge-discharge efficiency, the capacity and the cycle stability of a battery are remarkably improved.

The present invention discloses a polyaniline / thiourea / activated carbon fiber integrated material, its preparation method and energy storage application. The present invention uses activated carbon fiber as the matrix material, introduces thiourea molecules by grafting synthesis method, and introduces polyaniline by electrochemical polymerization method to synthesize the polyaniline / thiourea / activated carbon fiber integrated material. By introducing thiourea molecules, the activated carbon fiber is connected by amide covalent bond and the polyaniline is connected by hydrogen bond to enhance the interfacial interaction, reduce the transfer resistance between interfaces, enhance the electrochemical performance, significantly improve the electrochemical activity and cycle stability in the integrated structure. This material can be applied to the electrodes of flexible and woven wearable supercapacitors to construct energy storage devices and realize electrochemical energy storage applications.

The invention relates to the technical field of electrochemical analysis, and discloses a cobalt ion detection method based on an ion imprinted polymer modified electrode, and the method comprises the following steps: constructing a microfluidic system, and carrying out electrochemical polymerization by enabling a precursor solution to dynamically flow through the electrode to realize uniform growth of a modification layer and dynamic embedding of Co < 2 + >; then applying pulse potential to efficiently elute Co < 2 + >; and finally, performing electrochemical detection after re-combining to-be-detected Co < 2 + >. According to the scheme, imprinting sites are uniformly distributed, the template agent is rapidly and efficiently eluted, and the cobalt ion detection performance, reproducibility and preparation efficiency are remarkably improved.

The present invention provides a pH-regulated intelligent oil-water separation membrane, which includes a metal mesh framework. A lignosulfonate-doped polypyrrole membrane is disposed on the metal mesh framework. A fluorine-containing hydrophobic substance is grafted onto the sodium lignosulfonate-doped polypyrrole membrane, and the surface wettability can be reversibly transformed between hydrophilic and superhydrophobic under pH regulation. Its preparation method includes: S1 using an electrochemical oxidation method to prepare, electrochemically polymerizing in an ethanol / water solution containing sodium lignosulfonate and pyrrole to obtain a lignosulfonate-doped polypyrrole membrane; S2 pre-wetting the lignosulfonate-doped polypyrrole membrane and placing it in a vacuum environment together with the fluorine-containing hydrophobic substance, so that the fluorine-containing hydrophobic substance is fully vaporized and deposited on the surface of the polypyrrole membrane, completing the deposition and grafting of the polypyrrole membrane. Its surface wettability can be reversibly transformed between hydrophilic and superhydrophobic under pH regulation, realizing the on-demand separation of light oil / water and heavy oil / water type oil-water mixtures.

The application provides a molecular imprinting electrochemical sensor for hippuric acid detection, a preparation method and a segmented response technology, and belongs to the technical field of electrochemical sensors.The molecular imprinting electrochemical sensor for detecting hippuric acid is prepared by an electrochemical polymerization method based on a functional monomer aniline and o-phenylenediamine and taking hippuric acid as a template molecule.The sensor combines the advantages of molecular imprinting technology and electrochemical technology, has excellent sensitivity, fast response time and specific recognition ability, has good signal response for hippuric acid detection under different concentrations, generates a good electric signal in a 0-100nM hippuric acid solution, and forms a better linear relationship between the electric signal and the concentration in a hippuric acid solution with a concentration of more than 100nM, so that the signal response and detection range of the molecular imprinting electrochemical sensor under high concentration are widened, and the molecular imprinting electrochemical sensor is suitable for hippuric acid detection under a wide range.

The invention discloses an immunosensor for detecting porcine epidemic diarrhea virus as well as a preparation method and a detection method of the immunosensor. The preparation method of the immunosensor for detecting the porcine epidemic diarrhea virus comprises the following steps: S1, sequentially adding H2O2 and concentrated nitric acid into an aqueous solution of tungstate for reaction to obtain a modification solution; s2, performing electrochemical deposition on the glassy carbon electrode by taking the modification liquid as electrolyte; s3, taking an aniline solution composed of concentrated sulfuric acid, aniline and water as an electrolyte, and performing electrochemical polymerization on the glassy carbon / tungsten oxide electrode; s4, placing the glassy carbon / tungsten oxide / polyaniline electrode in a chloroauric acid solution for electro-deposition; s5, dispensing a porcine epidemic diarrhea virus antibody on the surface of the glassy carbon / tungsten oxide / polyaniline / gold electrode, and incubating; and S6, dropwise adding bovine serum albumin on the surface of the glassy carbon / tungsten oxide / polyaniline / gold-antibody electrode, and sealing. The sensor has the advantages of high detection speed, high stability, strong anti-interference performance and the like.

The present application relates to the field of metal surface coating film, disclose a kind of anti-rust corrosion-resistant washing machine motor support and preparation method thereof.The present application is designed to synthesize the coating film with anti-rust corrosion resistance, which is coated on the surface of stainless steel used in washing machine motor, and high-temperature curing is prepared to obtain the support with anti-rust corrosion resistance.The film of polyaniline electrochemically polymerized on stainless steel has passivation effect, which protects the stainless steel matrix to some extent, the coating film selects polyaniline and its derivatives as corrosion-resistant material on the basis of water-based epoxy resin as matrix resin, utilizes the hydrophobicity and barrier property of graphene, and reacts with polysaccharide after silane coupling agent grafting to obtain graphene dispersion liquid with stable dispersion performance, which is used as the corrosion-resistant component of water-based epoxy resin, and the washing machine motor support with anti-rust corrosion resistance is prepared after coating.

This application discloses a method for preparing a high-entropy Prussian blue analogue composite flexible electrode material and a sodium-ion hybrid capacitor. First, disodium hydrogen phosphate, p-toluenesulfonic acid monohydrate, and pyrrole are dissolved in deionized water. Constant current electrochemical polymerization is then performed using carbon cloth as the working electrode to grow polypyrrole nanofibers in situ on its surface. Subsequently, high-temperature carbonization is carried out under an argon atmosphere to obtain a nitrogen-doped carbon nanofiber / carbon cloth substrate. Then, manganese salt, cobalt salt, nickel salt, copper salt, and iron salt are mixed with sodium citrate to prepare a mixed solution, which is then reacted with potassium ferricyanide solution. After aging, washing, and drying, a high-entropy Prussian blue analogue-loaded composite cathode material is obtained. This application constructs a hierarchical composite structure integrating flexible support, rapid conductivity, and efficient sodium storage, which can effectively shorten the ion diffusion path, improve the electron transport rate, and alleviate structural distortion during charging and discharging.

Provided is a method for electrochemical preparation of polythioctic acid (PTA) and a derivative thereof. The method includes: mixing a thioctic acid (TA) monomer, a supporting electrolyte, and a polar solvent to obtain a mixed liquor; and subjecting the mixed liquor to electrochemical polymerization to obtain the PTA and / or the derivative thereof on a surface of an anode, wherein the TA monomer comprises one or more selected from the group consisting of TA and a TA derivative, and the TA derivative has a structure shown in formula I, wherein R is a derived group.

This invention discloses a modified electrode, its preparation method, and its application. The modified electrode comprises a hexabenzo[a]methyl methacrylate (HMM) layer and a working electrode, wherein the HMM layer is loaded on the surface of the working electrode. The HMM-modified material is obtained by in-situ one-step deposition on the electrode surface using electrochemical polymerization technology, thereby improving the detection performance of imidacloprid and solving the problem of poor film-forming properties caused by the poor solubility of carbon materials.

The invention relates to a negative pole piece and a preparation method thereof, a secondary battery and a power utilization device, the negative pole piece comprises a negative active material layer, the negative active material layer comprises an additive, and the additive comprises a compound containing a carbon-carbon double bond and a lithium sulfonate group or a sodium sulfonate group. In the preparation process of the battery negative electrode slurry, an additive containing carbon-carbon double bonds and lithium silicate or sodium silicate is added, and an ultrathin polymer film protection layer can be polymerized on the surface of a graphite negative electrode by the additive by utilizing an in-situ electrochemical polymerization technology, so that the comprehensive performance of a negative electrode piece and even a battery is finally remarkably improved.

The invention belongs to the technical field of food analysis and detection, and particularly discloses a method for rapidly detecting tartaric acid in wine based on a molecularly imprinted polymer (MIP) modified carbon fiber electrode. According to the method, a tartaric acid molecularly imprinted polymer layer is constructed on the surface of a carbon fiber electrode by adopting an electrochemical polymerization technology, and high-sensitivity and high-selectivity detection of tartaric acid is realized in a potential range of-0.5 to + 0.6 V (vs.Ag / AgCl) in combination with a differential pulse voltammetry (DPV). The modified electrode has excellent conductivity and specific recognition capability, the detection limit is as low as 0.05 [mu] mol / L, and the linear range is 1-800 [mu] mol / L. The method is simple and convenient to operate, the single detection only needs 20 seconds, the relative standard deviation is less than 3.5%, the recovery rate reaches 95-102%, the method can be directly applied to stock solution detection of complex wine matrixes (such as dry red wine, dry white wine and sweet wine), complex pretreatment is not needed, and an efficient and reliable analysis means is provided for wine brewing process monitoring and quality evaluation.

The present invention relates to a preparation method of a chloramphenicol double molecular imprinted membrane electrochemical sensor. The present invention uses chloramphenicol as a template molecule and N-(4-pentenoyl) isoleucyl-chitosan oligosaccharide as a functional monomer oligomer. Under the action of a cross-linking agent and an initiator, a chloramphenicol molecular imprinted membrane is first formed by thermal polymerization on the surface of a glassy carbon electrode. Then, electrochemical polymerization is carried out in a pyrrole solution containing chloramphenicol to form a composite double molecular imprinted membrane. When the sensor prepared by the present invention is used for chloramphenicol concentration determination, specificity, sensitivity and stability are all excellent. The electroactive probe during detection can be potassium ferrocyanide, ferrocenylmethanol, etc.; the prepared sensor is a double molecular imprinted performance, contrasting the molecular imprinted membrane of a monolayer, significantly improving the recognition performance of the composite molecular imprinted membrane to chloramphenicol, and the detection limit reaches nM level.

To provide a reactor for electrochemical reactions.SOLUTION: The invention consists of device, addition polymerization, condensation polymerization, process with piping, control and procedure. The device is a mechanical design to continuously remove solid deposit, conductive or not, on electrode surface. Besides overcoming the limitation of electrochemical polymer production where the products block the electrode from further operation, the device provides cheaper operation for electrometallurgy to harvest the valuable metals formed on electrode. The novel process allows retrofitting conventional polymer production process by replacing conventional reactor with electrochemical reactor, for low-cost rapid implementation. The novel reactions consist of addition reaction to produce polymers; and intermolecular reaction to produce classes of condensation polymers.SELECTED DRAWING: Figure 7

The present invention belongs to the field of polymer materials technology and provides a method for synthesizing a PEDOT polymer. The method uses EDOT (3,4-ethylenedioxythiophene) as a starting material, employs a two-electrode system with conductive glass, glassy carbon, platinum sheet, nickel foam, or cobalt foam as a working electrode or counter electrode, respectively, and uses dimethyl carbonate as an electrolyte solution. Electrochemical polymerization is performed under stirring to obtain a highly conductive and soluble PEDOT polymer. The method is simple to operate, has a high yield, and is suitable for industrial application.

The invention discloses a magnetic composite microbial carrier and a preparation method thereof, and belongs to the technical field of preparation of microbial carriers for wastewater treatment. The carrier comprises a magnetic-microbial core, a sodium alginate hydrogel inner layer and a stimuli-responsive electroactive composite outer layer from inside to outside. The core is formed by compounding Fe3O4 nanoparticles modified by citric acid and pseudomonas putida; and the outer layer is prepared from PNIPAM-co-PAA and polyaniline through electrochemical polymerization. The preparation method comprises the following steps: preparing modified magnetic particles and a bacterial suspension, embedding to form gel microspheres, constructing an outer layer through electrochemical in-situ polymerization, and finally performing electrochemical activation and drying to obtain the product. The carrier has adsorption and biological reduction functions, the adsorption capacity retention rate after five times of circulation exceeds 90%, the microbial survival rate exceeds 94%, secondary pollution is avoided, the technical problems that a traditional carrier is low in regeneration efficiency, microbial activity is difficult to maintain and secondary pollution is prone to being generated are solved, and the carrier is suitable for efficient and green remediation of heavy metal polluted water.