182 results about "Perfluorosulfonic acid" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to a composite proton exchange membrane and a preparation method thereof. According to the prepared composite proton exchange membrane, the perfluorosulfonic acid resin capable of being industrially applied is selected as a base membrane material, and the modified polybenzimidazole polymer resin is added, so that the problem of high ion permeation rate of a perfluorosulfonic acid proton exchange membrane in the prior art is solved; interpenetration and permeation of the electrolyte in the use process of the perfluorosulfonic acid proton exchange membrane can be reduced, cross contamination of positive and negative electrolyte is greatly reduced, and the service life of the electrolyte is prolonged. The PBI is functionalized, so that the proton transmission capacity of the PBI is improved, and the proton exchange membrane formed by blending the functionalized PBI and the perfluorinated sulfonic acid resin can keep excellent vanadium resistance, excellent proton transmission capacity and relatively high ion selectivity at the same time. The preparation process is simple, and the prepared proton exchange membrane can meet the performance and long-term stability use requirements of a flow battery.

The invention provides perfluorosulfonic acid resin and a polymerization method. The polymerization method comprises the following steps: mixing perfluoromethyl vinyl ether, perfluorosulfonyl fluoride vinyl ether and a fluorine-containing solvent to obtain a mixed solution; and adding an initiator into the mixed solution, introducing a tetrafluoroethylene monomer, carrying out a copolymerization reaction, carrying out solid-liquid separation, and carrying out transformation and drying to obtain the perfluorinated sulfonic acid resin. The perfluoromethyl vinyl ether monomer is introduced into a copolymerization system, so that the rigidity of a polymer main chain is effectively reduced, and the flexibility and low-temperature mechanical strength of the resin are enhanced; the crystallinity is effectively reduced, the Tg is adjusted, and the catalyst is suitable for low-temperature proton exchange membrane fuel cells and other application scenes; the introduction of perfluoromethyl vinyl ether improves the compatibility between the main chain and the sulfonyl fluoride-containing side chain, and is beneficial to the formation of a clearer and more continuous hydrophilic / hydrophobic microphase separation structure. A stable proton conduction network is facilitated, and the electrochemical performance of the resin under harsh working conditions is remarkably improved.

The invention discloses a negative-pressure-resistant enhanced PFA (Polyfluoroalkoxy) lining pipeline material and a manufacturing process thereof. The material comprises the following components in parts by weight: 100 parts of PFA resin, 1-10 parts of fluorinated nanofiller, 5-15 parts of perfluorinated sulfonic acid resin and 8-35 parts of an expanded polytetrafluoroethylene fiber skeleton. The material has a multi-scale reinforced structure: an expanded polytetrafluoroethylene skeleton is embedded into a PFA matrix to form a macroscopic reinforced structure, the perfluorinated sulfonic acid resin is attached to the surface of the skeleton to form an interface compatibilization layer, and the fluorinated nano filler is dispersed in the matrix to form a nano reinforced phase. The process comprises the steps of skeleton plasma activation and interface compatibilization treatment, nano filler and PFA melt blending, pressure forming, heat treatment and the like. The mechanical strength, creep resistance and negative pressure resistance of the PFA lining material are remarkably improved, and the PFA lining material is suitable for the fields of chemical engineering, pharmacy, semiconductors and the like.

The invention provides a catalyst coating proton membrane and a preparation method thereof, a membrane electrode and a fuel cell, and belongs to the technical field of fuel cells, the catalyst coating proton membrane comprises a proton exchange membrane and a catalytic material coating attached to the proton exchange membrane; the preparation slurry of the catalytic material coating comprises graphene aerogel, a catalyst, perfluorinated sulfonic acid resin and a dispersing solvent; the doping amount of the graphene aerogel in the preparation slurry of the catalytic material coating is 1-3wt%. By coupling the characteristics of the graphene carbon aerogel, the catalyst and the perfluorosulfonic acid resin, the rapid dynamic response of the fuel cell to the variable load is realized, and the dynamic response problem is solved from the membrane electrode level.

This application discloses a crown ether modified perfluorosulfonic acid resin, its preparation method, its application, and an ion exchange membrane. The main chain of the crown ether modified perfluorosulfonic acid resin is a perfluorocarbon chain. The crown ether modified perfluorosulfonic acid resin includes repeating unit A, which is shown in formula (1): Formula (1); In formula (1), R0 is a crown ether group, a is a positive integer from 0 to 6, and b is a positive integer from 2 to 5. This application can effectively improve the persistence of the ion exchange membrane's free radical quenching effect, while also improving the oxygen resistance of the ion exchange membrane.

The invention particularly discloses a preparation method and application of a composite ion exchange membrane. The composite ion exchange membrane is prepared from the following components in parts by weight: 95 to 110 parts of perfluorinated sulfonic acid resin, 5 to 8 parts of functionalized multi-walled carbon nanotubes, 10 to 15 parts of phosphotungstic acid, 1 to 1.8 parts of cerium-tannin complex, 12 to 20 parts of polyphenylene sulfide enhanced net, 30 to 40 parts of sulfonated polyether ether ketone solution, 3 to 5 parts of MXene-silicotungstic acid compound and 1 to 3 parts of polyethyleneimine cross-linking agent. The preparation method comprises the following steps: preparing the functionalized multi-walled carbon nanotube and the cerium-tannin complex; blending the perfluorinated sulfonic acid resin and the functional filler to prepare a membrane casting solution, and coating to form a membrane; a PPS reinforced net and an SPEEK solution are subjected to composite reinforcement, the PPS reinforced net and the SPEEK solution are subjected to PEI crosslinking and then superposed with the membrane, an MXene-silicotungstic acid compound is sprayed on the surface, and the composite ion exchange membrane is obtained through hot pressing and acid activation, has high proton conductivity and excellent mechanical strength and chemical stability and can be applied to a proton exchange membrane electrolytic cell and an all-vanadium redox flow battery.

The invention belongs to the technical field of silicone rubber, and particularly discloses hydrophobic conductive liquid silicone rubber and a preparation method thereof. The liquid silicone rubber comprises a component A and a component B, the component A comprises addition type liquid silicone rubber base rubber and a platinum catalyst, and the component B comprises vinyl silicone oil, hydrogen-containing silicone oil, an inhibitor, a Nafion solution and fibrous silver-coated glass powder. According to the invention, fibrous silver coated glass powder is introduced into the component B as a conductive filler, and a Nafion solution is used for surface modification of the conductive filler, so that a conductive network with high efficiency and low percolation threshold is constructed, and the interfacial compatibility of the filler and a silicone rubber matrix is also significantly improved; the perfluorosulfonic acid structure of Nafion not only enhances the interaction with the silver surface, but also endows the surface of the material with the low-energy characteristic, and synergistically realizes high conductivity and high hydrophobicity. The hydrophobic conductive liquid silicone rubber disclosed by the invention not only has excellent hydrophobicity and conductivity, but also has excellent mechanical properties.

A proton exchange membrane for an energy conversion device, a hydrogen fuel cell stack for a vehicle, and a method for producing a proton exchange membrane. The proton exchange membrane contains a first layer of a perfluorosulfonic acid ionomer. Furthermore, the perfluorosulfonic acid ionomer contains a first additive coated with methoxy nonfluorobutane. The hydrogen fuel cell stack comprises one or more membrane electrode assemblies, each containing a proton exchange membrane.

The invention relates to the technical field of fuel cells, in particular to low-granularity catalyst slurry for a fuel cell and a preparation method of the low-granularity catalyst slurry. The slurry comprises the following components: a catalyst, water, an ionomer and a solvent, wherein the weight ratio of the catalyst to the water to the ionomer to the solvent is 1: (4-10): (1-4): (2-6). Through a specific ball milling dispersion method, catalyst particles can be better combined with the perfluorinated sulfonic acid resin, and the particle size of the obtained catalyst slurry is smaller.

The invention relates to a sealing material and a decoloring kettle applied to intermediate synthesis, and belongs to the technical field of composite materials. The compatilizer with a phosphoric acid structure is prepared, the compatilizer is used for treating and modifying the aluminum filler, a quaternary ammonium salt structure and a long-chain alkyl structure are introduced to the surface of the modified aluminum filler, the quaternary ammonium salt structure can generate electrostatic attraction with sulfonic acid groups in perfluorosulfonic acid resin, and the long-chain alkyl structure can generate long-chain alkyl groups in the perfluorosulfonic acid resin; the long-chain perfluoroalkyl structure can be entangled with a polytetrafluoroethylene resin molecular chain, and the two effects are synergistic, so that the binding capacity of the aluminum filler and the polytetrafluoroethylene-perfluorosulfonic acid resin composite material is effectively improved, and a polytetrafluoroethylene phase and a perfluorosulfonic acid resin phase can be bridged; the overall mechanical property of the composite material is effectively improved.

The application discloses an electronic tuning type multifunctional sensor and a preparation method thereof. The sensor comprises a quartz crystal, a composite electrode and an oscillation circuit; the first end of the composite electrode is connected with the first end of the oscillation circuit, the second end of the oscillation circuit is connected with the first end of the quartz crystal, the second end of the quartz crystal is connected with the second end of the composite electrode, and the second end of the oscillation circuit is an output end. The composite electrode comprises a substrate, a planar inductive microelectrode and a planar capacitive microelectrode which are arranged on two sides and are connected in series through a via hole; a nano-magnetic iron oxide film is deposited on the inductive side, a hydroxylated ultra-high specific surface area disordered porous carbon film is deposited on the capacitive side, and a perfluorosulfonic acid protective layer is coated on the surfaces of the two films. The application forms a frequency selection network by connecting the double-sided electrode and the quartz crystal in series, and outputs an anti-interference frequency signal; the protective layer is insulated and prevents short circuit on the inductive side, and improves the humidity response on the capacitive side; manual overturning can switch the detection of metal damage, non-metal defects and environmental humidity, and the sensor has the advantages of high stability and low cost.

The invention belongs to the technical field of ion exchange membranes, and relates to a composite membrane with a high ion selective catalytic function and a preparation method thereof. The composite membrane has a three-layer structure, namely a high-ion-selectivity base membrane doped with a microporous material and catalytic functional composite layers doped with a positive electrode catalyst and a negative electrode catalyst on two sides of the base membrane. The preparation method comprises the following steps: firstly, dissolving perfluorinated sulfonic acid resin in an organic solvent, then dividing the obtained solution into three parts, and respectively adding a microporous material, a positive electrode catalyst and a negative electrode catalyst into the three parts for dispersion; after concentration treatment, a step-by-step tape casting mode is adopted to sequentially prepare a high-ion-selectivity base membrane, a positive electrode catalytic function composite layer and a negative electrode catalytic function composite layer, and finally, the three layers are compounded to form the high-ion-selectivity catalytic function composite membrane. The prepared composite membrane endows the flow battery diaphragm with a catalytic function; through fusion of the catalyst and the diaphragm resin, the problem of catalyst shedding is solved, and the conductivity and the ion barrier ability of the diaphragm are improved at the same time.

This invention discloses an enhanced long-life proton exchange membrane for hydrogen production via water electrolysis and its preparation method. The enhanced long-life proton exchange membrane for hydrogen production via water electrolysis comprises: a reinforcing material composed of ion exchange fibers, wherein the ion exchange fibers are made of a fluoropolymer with sulfonic acid groups on the side chains; a perfluorosulfonic acid resin, which forms a film on the reinforcing material for gas barrier and proton conduction; and a free radical quencher mixed in the perfluorosulfonic acid resin to capture generated free radicals and improve membrane durability. The thickness of the proton exchange membrane is 50-100 μm. The enhanced long-life proton exchange membrane for hydrogen production via water electrolysis prepared by this invention not only has good conductivity, hydrogen permeability, tensile strength, and water content, but also exhibits better dimensional stability and superior durability.

The invention discloses a nano cerium oxide composite proton exchange membrane and a preparation method and application thereof.The preparation method comprises the following steps that after a soluble cerium salt solution is sprayed and atomized, pyrolysis is conducted under the oxidizing atmosphere, and nano cerium oxide particles are prepared; then adding into a perfluorosulfonic acid resin solution, adjusting the pH value to be alkaline, and stirring to prepare a composite resin solution; and casting, drying to form a film, and carrying out heat treatment. Compared with the nano cerium oxide particles prepared by the traditional sol-gel method, the nano cerium oxide particles prepared by the spray pyrolysis method are more easily and uniformly dispersed in the perfluorosulfonic acid resin matrix and are not easy to agglomerate, and the basic structure of the perfluorosulfonic acid is maintained after the film is formed. Meanwhile, nano cerium oxide particles are dispersed in a perfluorosulfonic acid resin solution under an alkaline condition, so that the chemical stability and durability of the composite proton exchange membrane are improved, and the proton conductivity of the composite proton exchange membrane is improved.

The invention belongs to the technical field of batteries, and particularly relates to a composite solid electrolyte membrane, a preparation method thereof and a battery. The method comprises the following steps: mixing a perfluorosulfonic acid type polymer with an alkali metal compound, and carrying out a neutralization reaction to obtain a first mixed solution; stirring and mixing the first mixed solution and an alcohol solvent to obtain a second mixed solution; stirring and mixing the second mixed solution, a multivalent metal ion compound and metal oxide nanoparticles to form composite slurry; and coating the composite slurry on the surface of a current collector and carrying out gradient drying to obtain the composite solid electrolyte membrane. According to the method, the ionic conductivity of the solid electrolyte membrane is improved, and the coating uniformity or the membrane layer compactness is improved.

The utility model discloses a perfluorosulfonic acid resin modification reaction device relates to perfluorosulfonic acid resin modification reaction technical field, including the reaction kettle, the inside of reaction kettle is provided with heating mechanism and cleaning mechanism, this device is provided with heating mechanism, when driving driving motor drives the rotation of rotating rod, and the multiple guide vane of three turntables on rotating rod will be perfluorosulfonic acid resin liquid from the bottom of guide housing to the inside of guide housing and under the action of centrifugal force and throw, so that the liquid of three guide housing bottoms and the liquid around guide housing are replaced, and the liquid of heating cylinder inside whole bottom will be replaced to the inner wall of heating cylinder by which turntable throws to the inner wall of heating cylinder, so that when driving heating wire heats the cylinder wall of heating cylinder, can improve the heating effect and heating efficiency of whole, avoid perfluorosulfonic acid resin liquid in the bottom of heating cylinder when modification reaction can not be heated fully, thereby guaranteeing the uniformity and stability of reaction.

A proton exchange membrane for an energy conversion device, a hydrogen fuel cell stack for a vehicle, and a method of forming a proton exchange membrane are provided. The proton exchange membrane includes a first layer of a perfluorosulfonic acid ionomer. In addition, the perfluorosulfonic acid ionomer includes a first methoxynonafluorobutane coated additive. The hydrogen fuel cell stack includes one or more membrane electrode assemblies, each membrane electrode assembly including a proton exchange membrane.

The invention belongs to the technical field of high polymer materials, and particularly relates to a chlor-alkali ion exchange membrane suitable for an acidic electrolysis environment and a preparation method and application thereof. According to the chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment, firstly, a double-layer membrane matrix of perfluorinated sulfonic acid resin A and perfluorinated sulfonic acid resin B is thermally compounded with a reinforced matrix material to obtain a reinforced composite membrane, and finally, the reinforced composite membrane is subjected to hydrolysis, balancing and hydrogen type transformation treatment to obtain the chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment. The chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment is obtained. The perfluorinated sulfonic acid resin A and the perfluorinated sulfonic acid resin B have different ion exchange capacities, and the mass ratio of the perfluorinated sulfonic acid resin A to the perfluorinated sulfonic acid resin B is (1: 2)-(2: 1). The chlor-alkali ion exchange membrane suitable for the acidic electrolysis environment provided by the invention has good selectivity on chloride ions, can effectively block reverse osmosis of Cl ions, isolates mutual osmosis of hydrogen and oxygen, and stably and efficiently electrolyzes a byproduct hydrochloric acid. The invention also provides a preparation method thereof.

The invention belongs to the technical field of hydrogen fuel cells, and particularly relates to an anode catalyst layer applied to a fuel cell and a preparation method and application of the anode catalyst layer. The anode catalyst layer for the fuel cell comprises a water electrolysis layer and a hydroxide layer which are overlapped, and the hydroxide layer is in contact with a proton exchange membrane of the fuel cell; the water electrolysis layer comprises a water electrolysis catalyst, carbon powder and first perfluorinated sulfonic acid resin; the hydroxide layer comprises a hydroxide reaction catalyst and second perfluorinated sulfonic acid resin; the ion exchange equivalent EW1 of the first perfluorinated sulfonic acid resin is less than or equal to the ion exchange equivalent EW2 of the second perfluorinated sulfonic acid resin. The anode catalyst layer for the fuel cell has the beneficial effects that through the gradient design of the hydrophilic and hydrophobic properties of the water electrolysis layer and the hydroxide layer, the antipole resistance of the anode catalyst layer is remarkably improved, the performance attenuation degree after antipole is reduced, and the service life of the fuel cell is prolonged.

A catalytic layer slurry, comprising a platinum on carbon catalyst, a perfluorosulfonic acid resin, a hydrophobic modifier, an alcohol solvent, and deionized water, wherein the hydrophobic modifier is carbon powder having a hydrophobic coating.

The invention discloses anode slurry as well as a preparation method and application thereof. The invention provides a preparation method of anode slurry C. The preparation method comprises the following steps: step 1, mixing an iridium catalyst, perfluorinated sulfonic acid resin dispersion liquid and a solvent to obtain slurry A; step 2, adding a platinum precursor into the slurry A to obtain slurry B; and step 3, the slurry B reacts at 50-90 DEG C to prepare anode slurry C. According to the method, the water-soluble platinum precursor is directly added into the anodized iridium oxide catalyst slurry, so that the dispersity of platinum and the capability of eliminating hydrogen in oxygen of platinum per unit mass are remarkably improved.

The invention discloses an electrolytic hydrogen production electrochemical synthesis ammonia electrode catalyst and a preparation method thereof, relates to the technical field of electrochemical catalysts, and belongs to the patent classification number C25B1 / 00. Comprising the following steps: preparing graphene quantum dot powder by using a fused salt cutting method; then coating the graphene quantum dots through dopamine auto-polymerization and loading a molybdenum source, and annealing to obtain Mo-NX-coated GQDs powder; then compounding the modified Mo-NX-coated GQDs and TiCTXMXene colloid, performing vacuum filtration, depositing on carbon paper, and annealing to form a support film; and finally, performing CFplasma treatment to form a hydrophobic layer, and spin-coating perfluorinated sulfonic acid resin on the side of the carbon paper to obtain the electrode catalyst. According to the method, an efficient active center is constructed, electron / ion transmission is optimized, a three-phase interface is regulated and controlled, the ammonia yield and the Faraday efficiency are remarkably improved, and the method is suitable for a normal-temperature and normal-pressure electrochemical ammonia synthesis technology.

This invention discloses a polyaniline-modified Pt / C hydrogen evolution electrode with low noble metal loading, its preparation, and its application. The hydrogen evolution electrode comprises: a carbon fiber layer; a carbon powder layer containing polyaniline, perfluorosulfonic acid resin, and carbon powder; a polyaniline nanofiber layer; and a catalyst layer containing polyaniline, a Pt / C catalyst, and perfluorosulfonic acid resin. Each layer promotes electron or proton conduction, ensuring that both can smoothly reach the three-phase reaction region to participate in the hydrogen evolution reaction. Simultaneously, each layer has high porosity, ensuring timely drainage of the hydrogen evolution reaction product liquid water and avoiding flooding. The second, third, and fourth layers all contain polyaniline as a catalyst to promote the hydrogen evolution reaction, with the catalyst content distributed from low to high, ensuring that the hydrogen evolution reaction proceeds in stages and avoiding excessively fast local reaction rates that could cause concentration polarization and lead to a decrease in electrolysis performance. The hydrogen evolution overpotential of the polyaniline-modified Pt / C hydrogen evolution electrode of this invention is superior to that of the traditional Pt / C electrode, thus promoting the hydrogen evolution reaction.

This application relates to the field of rare earth smelting and separation technology, and discloses an ultrasonic-enhanced electrochemical coupling process for the complete separation of rare earth oxides, comprising the following steps: adding a polyphosphate complexing agent and a redox mediator to a cerium-rich rare earth aqueous solution as the anolyte, and pumping it into a dual-chamber membrane electrolytic cell separated by a cation exchange membrane for circulation. An electroacoustic phase-controlled synchronous system is activated to perform periodic reverse-phase pulse operations of turning on the ultrasonic current to decrease and turning off the ultrasonic current to increase. When the trivalent cerium conversion rate reaches a first threshold, the pH is dynamically adjusted and the current is reduced; when it reaches a second threshold, the process is stopped and the temperature is raised to mature the complex salt crystalline phase. The slurry is hot-pressed and filtered; the filter cake is dephosphorized and washed by alkaline solid-phase decomposition, and then calcined at a constant temperature to obtain high-purity cerium dioxide powder. This invention employs a dual-chamber electrolysis technology scheme using polyphosphate complexation combined with a perfluorosulfonic acid cation exchange membrane, achieving the technical effect of zero cathode penetration of rare earth materials.

The invention relates to a preparation method and application of a sulfonated covalent organic framework modified perfluorinated sulfonic acid resin composite proton exchange membrane, and the sulfonated covalent organic framework modified perfluorinated sulfonic acid resin composite proton exchange membrane is prepared from the following raw materials: perfluorinated sulfonic acid resin, 2, 4, 6-triformyl phloroglucinol and 2, 5-diaminobenzene sulfonic acid. The sulfonated covalent organic framework in the sulfonated covalent organic framework modified perfluorosulfonic acid resin composite proton exchange membrane has a rigid framework, and has relatively strong intermolecular interaction with perfluorosulfonic acid resin, so that the swelling problem can be effectively relieved while the hydrophilicity of the proton exchange membrane is improved; rich sulfonic acid groups in the sulfonated covalent organic framework structure can be used as additional proton transmission sites, so that the proton conductivity, the electrochemical performance, the mechanical strength, the antioxidant stability and the thermal stability of the composite membrane are improved.

The invention belongs to the technical field of bipolar membranes, and particularly relates to a bimetal organic framework-based water dissociation channel bipolar membrane, a preparation method and a device, and the preparation method comprises the following steps: S1, immersing one side of a perfluorosulfonic acid cation exchange membrane into a metal ion mixed solution; s2, immersing the cation exchange membrane layer obtained in the step S1 into a mixed solution containing different metal ions and 2, 6-naphthalene dicarboxylic acid dipotassium salt; s3, the cation exchange membrane obtained in the step S2 is subjected to a sealed reaction, and the bimetal organic framework-based water dissociation channel cation exchange membrane is obtained; and S4, spraying an anion exchange solution on the bimetal organic framework-based water dissociation channel cation exchange membrane obtained in the step S3 by using spraying equipment, and drying to obtain the bimetal organic framework-based water dissociation channel bipolar membrane. The prepared bimetal organic framework-based water dissociation channel bipolar membrane has the characteristics of low water dissociation voltage, high acid-base generation efficiency, good stability and the like, and solves the problems of poor stability, limited water dissociation efficiency and the like of the existing bipolar membrane.

The invention relates to a composite catalyst layer for a fuel cell membrane electrode and a preparation method and application thereof, and the preparation method of the composite catalyst layer comprises the following steps: mixing a Pt / C catalyst, an Fe-N-C catalyst, perfluorosulfonic acid ionomer resin and a dispersing solvent to prepare catalyst slurry; and then spraying the catalyst slurry on the other side of the half-side membrane electrode containing the anode catalyst layer to form a uniform composite catalyst layer. Compared with the prior art, the preparation method is suitable for preparing the membrane electrode of the proton exchange membrane fuel cell, so that low-cost, high-activity and high-stability fuel cell operation is realized at the same time.

This invention relates to a process for preparing compounds having formula (I): R 1 ‑C(=O)‑O‑CH2‑O‑C(=O)‑R 2 (I), where R 1 and R 2 Each of the terms represents an alkyl, cycloalkyl, or aryl group independently, wherein the alkyl, cycloalkyl, or aryl group is optionally substituted; the process includes step i) reacting the following substances: compound A selected from: trioxane, polyoxymethylene without a hydroxyl terminal group; compound (II): R 1 -C(=O)-O-C(=O)-R 2 (II); and perfluorosulfonic acid; wherein step i) is carried out at a temperature T1 of at least 50°C, wherein the molar ratio of compound (II) to compound A is 1:1 to 1.2:1.

The invention relates to an assembling method, a performance recovery method and a performance recovery device of electrochemical equipment, a steam generator is used for heating liquid water to obtain steam, and the steam is conveyed to an equipment inlet of the electrochemical equipment through a steam conveying pipeline to heat equipment parts of the electrochemical equipment; the perfluorinated sulfonic acid resin on the surface and the gap of the equipment component repairs the mechanical damage of the electrochemical equipment in the heating process; the electrochemical equipment is an electric pile or an electrolytic cell; the pressure controller is connected with the steam generator and is used for adjusting the steam pressure of the steam; the steam temperature controller is connected with the pressure controller and used for adjusting the steam temperature of the steam. According to the scheme, the equipment performance of the electrochemical equipment is recovered in a water vapor heating mode, on one hand, corrosion of acidic substances to metal components is avoided, on the other hand, the water vapor impurity concentration is low, and adverse effects of impurities in acid and acid residues on the electrochemical equipment are avoided.