27 results about "Supporting electrolyte" patented technology

The application discloses a kind of electrochromic device preparation methods for inhibiting reversible electrodeposition silver dendrite growth, comprising: S1: providing the first transparent conductive substrate and the second transparent conductive substrate of different surface square resistance;S2: silver salt, supporting electrolyte, dendrite inhibitor are mixed and prepared into electrolyte solution with organic solvent;S3: two substrates are oppositely arranged, and high surface square resistance side is connected to power negative as deposition electrode, low surface square resistance side is connected to positive, and electrolyte solution is injected to package electrochromic device;S4: the periodic bipolar pulse voltage waveform is applied, including the positive deposition, reverse dissolution and relaxation stage in turn circulation.This method of the application not only realizes the accurate control of electrodeposition kinetics and the improvement of large-area deposition uniformity, but also realizes the effective inhibition of dendrite growth and the significant improvement of metal coating quality, which can meet the stringent requirements of intelligent windows, anti-glare rearview mirror and display devices on long cycle life and high reliability.

The application provides a PdAg alloy electrocatalytic electrode and a preparation method and application thereof. The electrode comprises a conductive substrate and a PdAg alloy catalytic layer deposited on the surface of the substrate; the PdAg alloy catalytic layer has a three-dimensional space structure composed of PdAg alloy particle accumulation. The preparation method of the electrode comprises the following steps: mixing a palladium salt, a silver salt and a supporting electrolyte, heating to a molten state in a protective atmosphere to obtain a molten salt electrolyte; taking the conductive substrate as a cathode, taking the molten salt electrolyte as an electrolyte, setting an anode, applying a constant voltage or a constant current for electrolysis, taking out the cathode after electrolysis, and washing to obtain the PdAg alloy electrocatalytic electrode. The application also provides the PdAg alloy electrocatalytic electrode obtained by the above preparation method and application of the electrode in electrocatalytic preparation of ethylene oxide from ethylene. The electrode has high selectivity and catalytic activity in an electrocatalytic reaction.

This invention belongs to the field of organic electrochemical synthesis and microchemical technology, and relates to a method for preparing 2-chlorobenzoic acid by electrochemical reduction debromination in a continuous flow microreactor. The method includes: dissolving 3-bromo-2-chlorobenzoic acid, a supporting electrolyte, and a proton source in a polar aprotic solvent to prepare a cathode reaction solution; continuously feeding this solution into the cathode channel of a microchannel electrochemical reactor using a metering pump, while simultaneously pumping the anolyte into the anode channel; connecting a DC power supply and conducting a selective electrochemical debromination reaction under set current density, reaction temperature, and material residence time conditions; and obtaining high-purity 2-chlorobenzoic acid from the outlet material through gas-liquid separation, neutralization, extraction, and recrystallization. This invention combines a continuous flow microreactor with electrochemical debromination technology, significantly enhancing mass and heat transfer, resulting in a shorter reaction time, higher conversion and yield, and the addition of a reducing agent, ease of scale-up, and intrinsic safety, demonstrating promising industrial application prospects.

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.

This invention relates to an electrochemical lithium-ion sieve-based lithium extraction apparatus and method, belonging to the field of electrochemical lithium extraction. The apparatus and method mainly comprise: a first end plate, a second end plate, and several electrolytic cell units assembled together. The electrolytic cell units are located between the two end plates. After brine and supporting electrolyte enter the electrolytic cell unit, due to the crisscrossing of the flow guide holes on the cathode and anode guide plates, the brine and supporting electrolyte flow to the cathode and anode respectively. Under the action of an electric field, lithium ions in the brine are absorbed by the lithium-deficient ion sieve on the cathode, transforming into lithium-rich ion sieves. Lithium ions from the lithium-rich ion sieve on the anode are released into the supporting electrolyte, transforming into lithium-deficient ion sieves. After draining the brine and supporting electrolyte, the apparatus is rinsed with pure water, and the brine and supporting electrolyte are exchanged, with the current direction changed, repeating the cycle to achieve selective extraction of lithium from the brine.

This disclosure provides a coordination-regulated, high-stability aqueous organic flow battery adapted for frequency regulation in thermal power energy storage and its preparation method. The preparation method includes: adding deoxygenated deionized water to organic anode active material and anode coordination regulator, introducing an inert gas, stirring, and adding a pH adjuster to adjust the solution pH, followed by stirring to form an anode electrolyte; adding deoxygenated deionized water to organic cathode active material and cathode coordination regulator, introducing an inert gas, stirring, and adding a supporting electrolyte, followed by stirring to form a cathode electrolyte; immersing an ion exchange membrane in a modification solution and stirring to obtain a modified membrane; immersing the modified membrane in an alkali metal solution to activate ion exchange sites; immersing the electrode in a doping solution for dispersion treatment and drying to obtain a doped electrode; using this doped electrode as the working electrode, a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, and performing cyclic voltammetric activation in H2SO4 solution.

The application relates to a hydrochloric acid-sulfuric acid mixed acid supporting electrolyte and application thereof in a tin-iron liquid flow battery. The mixed acid supporting electrolyte is an acidic mixed aqueous solution containing chloride ions and sulfate ions, and the molar concentration ratio of the chloride ions to the sulfate ions is 5-7:1. On the basis of the mixed acid supporting electrolyte, tin sources and iron sources are dissolved to serve as negative and positive active materials respectively. The tin-iron liquid flow battery adopting the mixed acid supporting electrolyte of the application can be stably operated for more than 500 hours under an 80 mA cm −2 Current density. The deposited tin in the system presents uniformly distributed polyhedral particles, forms a dense and continuous covering layer on the surface of carbon fibers, has high nucleation density and uniform deposition. The application provides the mixed acid supporting electrolyte for the tin-iron liquid flow battery, the specific molar ratio of the chloride ions to the sulfate ions is accurately constructed, the coordination of the two at the electrode interface is realized, and thus the performance bottleneck is broken through.

The present application relates to a kind of manganese cadmium sulfur / silicon composite photocathode based on constant current electrodeposition method and preparation method and application thereof.The method is in situ grown with hollow microspheres structure manganese cadmium sulfur on the surface of crystalline silicon with pn junction and surface light trapping microstructure by constant current electrodeposition technology, thereby forming manganese cadmium sulfur / silicon composite photocathode.By controlling the specific conditions in the electrodeposition process, such as the type of Mn source, Cd source and S source, the concentration range thereof, the current density of electrodeposition, the time of electrodeposition, the composition of electrolyte system, such as the type of solvent and the addition of supporting electrolyte, the element ratio of manganese and cadmium in the electrodeposition process is accurately controlled, so that a uniform, dense and firmly bonded MnCdS film is formed on the surface of crystalline silicon with specific microstructure.The photocatalytic activity, water splitting efficiency and catalytic stability of the photocathode are significantly improved.

The application belongs to the technical field of electrochemical energy storage, and provides a negative electrolyte, a preparation method thereof and a zinc-bromine flow battery. The components of the negative electrolyte include zinc bromide, a supporting electrolyte, a negative electrode additive and water, the negative electrode additive includes malic acid, the concentrations of the zinc bromide, the supporting electrolyte and the malic acid in the negative electrolyte are 2.0-2.5 mol / L, 2.0-3.0 mol / L and 0.02-0.04 mol / L respectively. The zinc dendrite and hydrogen evolution reaction are effectively inhibited, and the synergistic improvement of coulombic efficiency, voltage efficiency and energy efficiency is realized. Therefore, by introducing malic acid into the negative electrolyte, the zinc dendrite and hydrogen evolution reaction in the zinc-bromine flow battery can be effectively inhibited, and the synergistic improvement of coulombic efficiency, voltage efficiency and energy efficiency is realized.

This invention discloses a dendrite-free zinc-bromine flow battery electrolyte, its preparation method, and the zinc-bromine flow battery itself, belonging to the field of electrochemical energy storage technology. The method includes: adding a zinc salt electrolyte (concentration 2.0-2.5 mol / L), an ammonium salt supporting electrolyte (concentration 2.0-3.0 mol / L), a complexing agent (concentration 0.3-0.5 mol / L), and a cerium salt additive (concentration 0.01-0.2 mol / L) to a solvent, stirring until completely dissolved to obtain the dendrite-free zinc-bromine flow battery electrolyte. This invention introduces cerium ions as an electrolyte additive, generating a synergistic effect with ammonium ions through dual cations. Cerium ions form a cerium-based conversion film in situ during zinc deposition, inducing a transition from transient to gradual nucleation of zinc ions, fundamentally inhibiting dendrite growth. Simultaneously, ammonium and cerium ions are more easily adsorbed onto the conversion film, forming an electrostatic shielding layer, increasing the resistance to hydrogen evolution reaction, improving the thermodynamic stability of the deposited zinc metal, and enhancing the battery's coulombic efficiency, voltage efficiency, and cycle life.

The application discloses a method for electrochemically synthesizing platinum nitrate, and belongs to the technical field of precious metal chemical industry and electrochemical synthesis. The method discards the traditional fixed platinum anode, adopts a chemically inert electrode, and directly suspends platinum powder in a composite electrolyte composed of nitric acid, high-concentration sodium / potassium nitrate supporting electrolyte and sulfamic acid complexing agent. Under strong mechanical stirring, the electrode is subjected to electrolysis by applying a composite waveform current of pulse current or direct current superimposed on alternating current with specific parameters, so that the platinum powder is efficiently oxidized and dissolved through dynamic collision. After the electrolyte is subjected to heat filtration, the electrolyte is concentrated under low-temperature and reduced pressure until a crystal film appears, and then the electrolyte is subjected to cooling crystallization, washing and drying, so that a high-purity platinum nitrate product is obtained. The method solves the problem of anode passivation, significantly improves the current efficiency and reaction rate, is green and environment-friendly, has high product purity, and is easy to realize continuous production.

This application discloses a flow electrode slurry and its preparation method, as well as a method for enriching and recovering ammonium ions, relating to the field of flow electrode preparation technology. The slurry includes biochar and a supporting electrolyte solution. The biochar is obtained by cultivating aquatic plants in ammonia-nitrogen-containing wastewater to obtain biomass and then pyrolyzing the biomass. The surface of the biochar contains nitrogen- and / or oxygen-containing functional groups. The solid content of the flow electrode slurry is 1-10 wt%. This application effectively recovers NH4+ from ammonia-nitrogen-containing wastewater. + Selective recycling.

This invention relates to an oil-quenched snap ring steel wire, comprising the following preparation steps: preparing a snap ring steel wire blank, the blank containing the following elements in percentage: 3-5% C, 1-4% Si, 5-7% Cr, 5-8% V, 0.5-1% P, 0.3-0.5% S, and Fe occupying the remaining portion; heat treatment of the snap ring steel wire blank before drawing; the snap ring steel wire blank undergoes a drawing lubricating powder bath before entering the drawing die for drawing; deoxidation treatment: a deoxidation bath is prepared, and the drawn steel wire enters the deoxidation bath for surface deoxidation treatment; organic solvent protective layer treatment: an organic solvent bath is prepared, the organic solvent bath is filled with organic solvent, the organic solvent including -SH thiol organic compound salts, and NaOH or Na2CO3 as a supporting electrolyte; the deoxidation-treated steel wire enters the organic solvent bath to form a surface oxide layer; oil quenching treatment is performed, and the steel wire is inspected for flaws, completing the preparation of the snap ring steel wire.

The application relates to the technical field of vanadium battery production, and discloses a vanadium electrolyte for energy storage batteries, a preparation method and application thereof, the vanadium electrolyte comprises vanadium ions, a supporting electrolyte and an additive, the molar ratio of V(III) ions and V(IV) ions is 0.9-1.1:1, the additive is a heterocyclic organic carboxylic acid, the molar ratio of the additive and the vanadium ions is 0.01-2:1, the vanadium ion concentration in the vanadium electrolyte is greater than or equal to 2 mol / L, the sodium ion concentration is less than or equal to 20 mg / L, and the potassium ion concentration is less than or equal to 30 mg / L. The preparation method of the vanadium electrolyte comprises reduction, extraction, reverse extraction and purification, an extraction system of organic phosphoric acid, organic amide and petroleum ether is used, so that the vanadium electrolyte with higher vanadium ion concentration and lower impurity ion concentration such as sodium and potassium can be prepared, and the Coulomb efficiency and voltage efficiency of the energy storage battery can be improved.

The application discloses an asymmetric viologen compound and application thereof in water-based flow batteries, and particularly relates to the following steps: taking 4,4'-dipyridine and iodomethane as starting materials, introducing hydrophilic groups such as phosphonic acid groups, sulfonic acid groups or quaternary ammonium salts into both ends of the dipyridine through two-step alkylation, and obtaining a high-purity target product after ion exchange. The derivative has high water solubility (>1.3 mol / L), low transmembrane permeability, a suitable redox potential and excellent electrochemical reversibility. The asymmetric viologen compound is used as a negative electrolyte active molecule, the TEMPO derivative is used as a positive electrolyte active molecule, a neutral salt is used as a supporting electrolyte, a titanium plate or a graphite plate is used as a current collector of the positive and negative electrodes, a graphite felt or a carbon felt is used as the positive and negative electrodes, a commercial anion exchange membrane is used between the positive and negative electrolytes, and a water-based flow battery is assembled. The preparation process is simple, raw materials are cheap and easy to obtain, and the application is suitable for large-scale energy storage systems.

The present application relates to the technical field of organic synthesis, and particularly relates to an electrochemical synthesis method of 3-iodo-4-amino maleimide, which comprises the following steps: adding N-phenyl maleimide, aromatic amine compound or aliphatic amine compound, iodide and other substances as reaction raw materials into an anode chamber of an electrolytic cell, adding a supporting electrolyte and ultrapure water into a cathode chamber, and electrolyzing at room temperature to synthesize 3-iodo-4-amino maleimide. The present application uses electrochemical reaction, realizes the preparation of products through the gain and loss of electrons of reactants on electrodes, does not need to add additional oxidants and metal catalysts, and the reaction is carried out at normal temperature and pressure, which is conducive to energy saving. The process flow is simple, the operation is simple, and the reaction is easy to control. The present application opens up a new synthesis route and method for the preparation of 3-iodo-4-amino maleimide compound, and has good application potential and research value.

The application belongs to the technical field of electrolyte of all-vanadium redox flow battery, and particularly relates to a vanadium battery positive electrolyte based on P-CDs synergistic stabilization and application thereof. The vanadium battery positive electrolyte provided by the application comprises vanadium ions, a supporting electrolyte and an additive, and the additive comprises phosphorus-doped carbon quantum dots. The application takes phosphorus-doped carbon quantum dots (P-CQDs) as an additive of the vanadium battery positive electrolyte, the additive has a synergistic stabilization mechanism, can effectively block the precipitation path of pentavalent vanadium ions, and significantly improves the high-temperature stability of the pentavalent vanadium electrolyte.

The application relates to the field of batteries and discloses an additive-modified neutral zinc-manganese flow battery positive electrolyte, a positive unit and a battery. The positive electrolyte comprises a solvent, a manganese salt, a supporting electrolyte and an additive, wherein the additive is an acrylamide derivative. The introduction of the acrylamide derivative can effectively control the manganese deposition behavior on the positive side, and the dynamic hydrogen bond network formed by the acrylamide derivative and water molecules can optimize the microstructure and interface properties of the electrolyte, thereby promoting ion migration and charge transfer, improving the problems of insufficient conductivity and active material loss caused by manganese deposition, and simultaneously, in combination with the positive carbon felt electrode pretreated by an electrochemical deposition method, the surface active site distribution, wetting performance and interface reaction uniformity of the positive carbon felt electrode are optimized, and more favorable nucleation and growth conditions can be provided for the deposition of manganese species.

A de-powdered waste battery electrode sheet and its preparation method are disclosed. The preparation method includes: providing a cathode plate, an anode plate, and an electrolyte; the cathode plate comprises a waste battery electrode sheet, the anode plate comprises boron-doped diamond, and the electrolyte comprises a supporting electrolyte, a halide salt, and a pH buffer; immersing the cathode plate and anode plate in the electrolyte and electrically connecting them to carry out an electrochemical reaction; the electrode spacing between the cathode plate and anode plate is 1 mm-10 mm, and the constant current density is 20 mA / cm². 2 -80 mA / cm 2 The de-powdered waste battery electrode sheets are collected from the cathode plate after the electrochemical reaction. The preparation method of this application enables effective separation between the original active material and the current collector in the obtained de-powdered waste battery electrode sheets, with less residual binder on the surface of the current collector and good mechanical properties maintained.

This invention discloses a high-voltage resistant solid-state lithium battery chloride cathode material, its preparation and application. The cathode material is prepared using metal chloride and lithium hydroxide as raw materials and a ball milling method. x (M1) y (M2) z O x Cl cathode materials retain the characteristics of high-performance halide cathode materials, enabling rapid ion conduction, eliminating the need for supporting electrolytes, and significantly improving battery energy density. In addition, by adjusting the oxygen content in the halide cathode material, the high-voltage resistance of the halide cathode material is achieved, avoiding battery pack safety issues caused by overcharging.

The application discloses a kind of polybenzodifuranone and its constant potential polymerization preparation method, belong to organic conductive polymer material preparation technical field, benzodifuranone (BFDO) and supporting electrolyte are dissolved in polar aprotic solvent, and electrolyte is obtained by mixing uniformly;With platinum metal electrode as working electrode and counter electrode, with saturated calomel electrode as reference electrode, three electrodes are connected with direct current power supply and are placed in the electrolyte, in air atmosphere, electrochemical polymerization reaction is carried out using constant potential method;After reaction, the reaction liquid is extracted and filtered, dried, to obtain polybenzodifuranone (PBFDO).The application uses constant potential electrochemical polymerization method, n-type conductive polymer polybenzodifuranone can be synthesized in air atmosphere in one step, without catalyst, high-temperature anaerobic environment and complex post-processing, the product conductivity is 1.157-18.28 S / cm.Process simplification, low cost, process controllable, can realize green scale preparation and industrialization application.

The present application relates to the field of metal surface treatment, in particular to a suspension electrolytic slurry for electrochemical polishing of titanium and titanium alloy and a polishing process. The suspension electrolytic slurry comprises 1-5 wt% acid, 20-60 wt% ion conductive polymer resin, 1-20 wt% supporting electrolyte, and the balance deionized water. The polishing process comprises the following steps: (1) preparing the suspension electrolytic slurry; (2) electrochemical polishing treatment; (3) ultrasonic rinsing treatment. The suspension electrolytic slurry can be used for polishing treatment to obtain a titanium and titanium alloy surface with low roughness, and the suspension electrolytic slurry has good safety and environmental protection.

The application discloses a kind of high conductivity polybenzodifuran dione and cyclic voltammetry preparation method thereof, belong to organic conductive polymer material preparation technical field, method includes: benzodifuran dione (BFDO) monomer and supporting electrolyte are dissolved in polar aprotic solvent, obtain electrolyte;With platinum electrode immersed in electrolyte as working electrode and counter electrode, with saturated calomel electrode as reference electrode, constitute three-electrode system;In air atmosphere, cyclic voltammetry scanning is applied to working electrode, carries out electrochemical polymerization reaction, and polybenzodifuran dione (PBFDO) is directly generated on electrode surface;After filtration, washing and drying, high conductivity polybenzodifuran dione film is obtained;The film is n-type conductive polymer, and the conductivity is 2.2~428.3 S / cm.Cyclic voltammetry electrochemical polymerization method is used, and no additional oxidizing agent is needed, and the polymerization process completely depends on the electron transfer reaction on the electrode surface, to realize the direct polymerization of polybenzodifuran dione on electrode.

The application belongs to the technical field of electrolyte of all-vanadium redox flow battery, and particularly relates to a vanadium battery negative electrode electrolyte based on organic silicon molybdate and application thereof. The vanadium battery negative electrode electrolyte provided by the application comprises vanadium ions, a supporting electrolyte and an organic silicon molybdate additive; the organic silicon molybdate additive is [TBA]4[SiMo 12 O 40 ] and / or [BMIM]4[SiMo 12 O 40 ]. The application adds the organic silicon molybdate to the vanadium battery negative electrode electrolyte, effectively improves the stability of the vanadium battery negative electrode electrolyte at low temperature, and expands the temperature adaptation range of the vanadium battery.

The present application relates to the field of electrochemistry, in particular to a synthesis process of selenium disulfide, which is carried out in an electrolytic cell equipped with an anode, a cathode and an ultrasonic probe, and comprises electrolyte preparation: dissolving a selenium source, a sulfur source, a supporting electrolyte and a surfactant in deionized water; pre-ultrasonic treatment; electrochemical synthesis: applying a constant voltage or a constant current while carrying out ultrasonic-assisted reaction; product post-treatment: separating, washing and drying the cathode deposit to obtain selenium disulfide. Through the synergistic effect of ultrasonic cavitation effect and electrochemical deposition, the present application significantly strengthens the reaction mass transfer process and effectively prevents electrode passivation and product agglomeration. The process successfully solves the problems of low efficiency, uneven product quality and serious environmental pollution existing in the existing synthesis methods of selenium disulfide.