58 results about "Acid electrolyte" patented technology

The invention relates to a preparation method and application of a nitrogen-doped carbon nanotube coated with platinum-ruthenium alloy, and is characterized in that the nitrogen-doped carbon nanotube of which the tube wall is coated with PtRu alloy nanoparticles is prepared by using a chemical vapor deposition process assisted by an anodic aluminum oxide template and subsequent ammonia gas annealing; although the contents of Pt and Ru are respectively as low as 0.8 wt% and 4.2 wt%, the combined action of Pt, Ru and N doping enables the platinum-ruthenium-nitrogen doped carbon nanotube composite material to have excellent HER electrocatalytic activity in alkaline, acidic and neutral electrolytes, and the HER activity of the composite material in the alkaline and acidic electrolytes exceeds that of a commercial Pt / C catalyst; besides, after the platinum-ruthenium-nitrogen-doped carbon nanotube composite material is used as a cathode electrocatalyst to assemble an anion exchange membrane electrolytic cell, the electrolytic cell provides low voltage of 1.78 V under the industrial grade current density of 1Acm <-2 >, and the electrolytic cell has good durability; therefore, the invention provides a new opportunity for designing and synthesizing a high-performance pH universal HER electrocatalyst.

The application discloses a preparation method and application of a zirconium dioxide loaded iridium oxide nanocluster oxygen evolution electrocatalyst. A mixed solution of zirconium salt, amide solvent and organic acid is prepared, and the mixed solution is kept at 120 DEG C for 24 hours; after cooling, the white product is separated, washed and dried. Then, the product and iridium salt are dispersed in a mixed solution of tetrahydrofuran and water, and sodium nitrate and potassium nitrate aqueous solution are added under stirring; after stirring, rotary evaporation is carried out at 60 DEG C, and the greenish powder obtained after drying is vacuum dried at 60 DEG C for 12 hours; the greenish powder is kept in a muffle furnace at 450 DEG C for 30 minutes, and then cooled in air; the greenish powder is washed with deionized water and anhydrous ethanol for multiple times, and finally vacuum dried at 60 DEG C for 12 hours. The zirconium dioxide loaded iridium oxide material based on oxygen overflow stable tetragonal zirconia can be specially applied to an electrocatalyst for an oxygen evolution reaction in an acidic electrolyte, has excellent oxygen evolution reaction activity, follows a lattice oxygen mechanism in the reaction process, and can realize an oxygen overflow effect from tetragonal zirconia to iridium oxide nanoclusters to stabilize the catalyst.

The invention relates to the technical field of new energy, in particular to a metal-water battery system capable of storing energy and asynchronously producing hydrogen and oxygen, the metal-water battery system comprises a bifunctional catalyst, an iron deposition / dissolution electrode and an acidic electrolyte, and the metal-water battery system is prepared by the following specific steps: S1, stainless steel such as 304 or 316 is subjected to molten salt electrolysis modification to prepare the bifunctional catalyst, and the bifunctional catalyst has OER and HER catalytic activity; s2, taking the modified stainless steel catalyst as a first anode, taking inert electrodes such as a copper sheet or a titanium sheet as a first cathode, and forming a first electrolysis system with an acidic ferrous sulfate solution; and S3, electrolysis is conducted through the first electrolysis system, oxygen evolution reaction is conducted on the first anode, and metal iron is deposited on the first cathode. According to the metal-water battery system considering energy storage and asynchronous production of hydrogen and oxygen, time-space separation of deposition / dissolution of iron and hydrogen-oxygen precipitation is regulated and controlled through the bifunctional catalyst, and safe energy storage and step-by-step production of hydrogen energy / oxygen are achieved; the method is suitable for renewable energy storage, hydrogen energy preparation and distributed energy supply scenes.

The invention belongs to the technical field of aqueous zinc ion batteries, and particularly relates to an acidic corrosion-resistant gel electrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing an acidic polymerizable monomer, a reinforcing component, a cross-linking agent and a photoinitiator in water to obtain a precursor solution, removing dissolved oxygen in the precursor solution, initiating cross-linking polymerization by adopting ultraviolet light to form precursor gel, and soaking the precursor gel in an electrolyte solution to obtain the acidic corrosion-resistant gel electrolyte. And the electrolyte solution is prepared by mixing soluble zinc salt and an additive in water. The acidic corrosion-resistant gel electrolyte prepared by the method improves the corrosion of the acidic electrolyte to the metal anode, so that the aqueous zinc ion battery matched with the metal anode shows excellent cycling stability and extremely high ionic conductivity, and the prepared total battery has excellent cycling stability and capacity retention ratio under high load.

The invention discloses a two-step water electrolysis hydrogen production device based on a three-electrode system and a hydrogen production method, and belongs to the technical field of water electrolysis, the two-step water electrolysis hydrogen production device comprises an oxygen evolution catalytic electrode, a hydrogen evolution catalytic electrode and a quinone polymer electrode HMND, the HMND is reduced in an acidic electrolyte to form a negatively charged intermediate, and the negatively charged intermediate and hydrogen ions are subjected to a coordination reaction to form HMND-2H; hydrogen ions are subjected to electrochemical reduction at the cathode oxygen evolution catalytic electrode to generate hydrogen, the HMND-2H electrode is subjected to electrochemical oxidation to form an HMND electrode, and electrons flow to the hydrogen evolution catalytic electrode from the HMND-2H electrode through an external circuit; the HMND electrode is electrochemically reduced into an HMND-2H electrode, water molecules are electrochemically oxidized into oxygen on the surface of the oxygen evolution catalytic electrode, and electrons flow to the HMND electrode from the oxygen evolution catalytic electrode through an external circuit; the hydrogen production process and the oxygen production process of the acidic electrolyzed water are carried out step by step, a diaphragm is not needed, and the method is low in toxicity, low in cost and environment-friendly.

The invention discloses a multi-metal Ru-based electrocatalyst as well as a preparation method and application thereof, and belongs to the field of electrocatalysis. Carbon black is used as a carrier, Ni, Co and Ru are loaded on the carbon black, and the stability of RuO2 is greatly improved through simultaneous introduction of Ni and Co. Carbon black is removed through H2 / Ar atmosphere reduction and air heat treatment, so that the catalyst is granulated, the catalytic performance of the catalyst is improved, unstable Ni and Co are removed through acid treatment, and the final NiCo-RuO2 catalyst is obtained. The performance of the acidic OER is greatly improved through heat treatment and acid pickling in the air. The NiCo-RuO2 catalyst shows remarkable performance in the aspect of promoting oxygen evolution reaction (OER) under the acidic condition, has high activity and high stability, and becomes an electrocatalyst which has a promising prospect and can replace iridium to be used in acidic electrolyte.

The application relates to a preparation method of a platinum-based alloy rare earth metal oxide fuel cell anode catalyst, and relates to a preparation method of a platinum-based alloy oxide fuel cell catalyst, which aims to solve the technical problems of low catalytic activity and easy carbon monoxide poisoning of the existing methanol fuel cell anode catalyst. The method comprises the following steps: firstly, preparing a CeO2 catalyst carrier material by using a hydrothermal synthesis method; then mixing a corresponding Pt, Sn and Cu precursor solution used for preparing a PtSnCu alloy with the CeO2 catalyst carrier material to perform oil bath heating reaction; and finally, separating, washing and drying to obtain the catalyst PtSnCu / CeO2. The initial capacity of the catalyst in an acid electrolyte is 1010.5-1163.3 mA mg Pt ‑1 , and the capacity after 500 cycles is 680.65-820.4 mA mg Pt ‑1 , the retention rate is 67.4%-70.5%, and the catalyst can be used in the field of methanol fuel cells.

The invention provides a method for applying a low-concentration mixed acid electrolyte to electrochemical etching of a commercial alloy electrode, and belongs to the technical field of electrochemistry. In-situ surface etching is carried out on commercial alloy through mixed acid electrolyte, a surface micro-nano structure is formed, the surface area and the electrochemical active area of the commercial alloy are remarkably increased, and the method comprises the following steps that firstly, phosphoric acid, hydrochloric acid, sulfuric acid or nitric acid are mixed according to a specific combination and proportion, and a low-concentration mixed acid solution is obtained; and 2, using a double-cathode strategy in an electrolytic bath, fixing the pretreated commercial alloy in the electrolytic bath as an anode and electrodes on two sides as cathodes, adding the mixed acid electrolyte in the step 1 for electrochemical etching, taking out after the reaction is completed, cleaning, and carrying out vacuum drying. According to the method, the surface area and the electrochemical active area of the commercial alloy can be remarkably increased, a specific surface micro-nano structure is formed according to different commercial alloy types and etching parameters, and the method is suitable for hydrogen production application of alkaline electrolyzed water and electrolyzed seawater.

The utility model relates to the technical field of electrolytic copper foil, in particular to a protective device for electrolytic copper foil production, which comprises a protective cover, the protective cover is arranged on the upper portion of an electrolytic bath and used for protecting a cathode roller after the electrolytic copper foil is stripped, and the protective cover comprises a side end protective baffle and an upper end protective baffle which are connected. An acid liquid spraying pipe is arranged in the protective cover, the acid liquid spraying pipe is communicated with an acid electrolyte feeding pipe, the acid liquid spraying pipe is horizontally or obliquely arranged, at least one spraying hole is formed in the pipe wall of the acid liquid spraying pipe, and the spraying hole is formed in the upward pipe wall of the acid liquid spraying pipe. The cathode roller can prevent dust and other foreign objects from being in contact with the roller surface of the cathode roller, can control acid mist drifting to a certain degree, can shorten the contact time of the roller surface of the cathode roller and air, delays oxidation of the roller surface of the cathode roller, and reduces the appearance quality problem of copper foil caused by oxidation of the roller surface of the cathode roller.

The application belongs to the technical field of electrochemical energy storage and provides an electrolyte, a preparation method and a full vanadium redox flow battery. The electrolyte comprises an acidic electrolyte, vanadyl sulfate, an additive and water, the additive is 5-amino-2-naphthalenesulfonic acid, 3-aminobenzenesulfonic acid or 3-aminopropanesulfonic acid, the concentration of the acidic electrolyte in the electrolyte is 3.0-3.5 mol / L, the concentration of the vanadyl sulfate is 1.7-2.0 mol / L, and the concentration of the additive is 0.05-0.25 mol / L. The electrolyte can improve the high-temperature stability of VO2 + under the premise of ensuring good electrochemical performance.

The invention discloses an aluminum-sulfur battery electrolyte for promoting high-valence oxidation of sulfur. The aluminum-sulfur battery electrolyte comprises Lewis acidic electrolyte salt; an organic ligand, wherein the organic ligand and the Lewis acidic electrolyte salt form a room temperature ionic liquid or an ionic-like liquid; a chloride ion concentration regulating agent; the chloride ion concentration regulating agent is used for promoting elemental sulfur of the positive electrode of the battery to be subjected to electrochemical oxidation in the charging process of the aluminum-sulfur secondary battery so as to generate a sulfur oxidation product with the valence state of + 2. Meanwhile, the invention provides the aluminum-sulfur battery, high-valence electrochemical oxidation of the positive sulfur element in the charging process is remarkably promoted, and the specific discharge capacity is greatly improved, so that the aluminum-sulfur battery with high energy density is constructed.

The application discloses a platinum-nickel loaded molybdenum carbide / molybdenum dioxide nanocomposite material, a preparation method and application. The application first uses a metal molybdenum salt and a complexing agent as raw materials to prepare a Mo2C / MoO2 base material containing a heterojunction, then loads PtNi on the Mo2C / MoO2 base material to prepare the platinum-nickel loaded molybdenum carbide / molybdenum dioxide nanocomposite material. The MoO2 / Mo2C nanomaterial carrier well anchors the PtNi alloy, further improves the catalytic stability of the material, and the electronic coupling and interface synergistic effect provided by the heterojunction can enhance the reactivity of the active sites, so as to maximize the catalytic performance of the material, and further reduce the hydrogen production application cost under an acid condition. Experimental results show that the platinum-nickel loaded molybdenum carbide / molybdenum dioxide nanocomposite material has the advantages of high catalytic activity, excellent stability and the like as a hydrogen production electrocatalyst of an acid electrolyte, and therefore has a wide application prospect.

The invention relates to the technical field of carbon dioxide electro-catalytic conversion, in particular to a carbon dioxide electrolytic tank for acidic electrolyte. The electrolytic tank comprises an epoxy resin glass fiber plate a, a cathode collector plate, a gas flow field plate, a silicone rubber gasket a, a cathode electrode, a cathode electrolyte plate, a silicone rubber gasket b, a proton exchange membrane, a silicone rubber gasket c, an anode electrolyte plate, a silicone rubber gasket d, an anode electrode, an anode collector plate and an epoxy resin glass fiber plate b which are arranged in sequence. According to the carbon dioxide electrolytic tank, the diffusion and reaction rate of carbon dioxide gas is increased through the gas flow field plate with the snake-shaped flow field, diffusion of carbon dioxide is promoted, carbonate deposition caused by local alkalinity on the electrodes is avoided, and electrolysis of carbon dioxide in high-concentration acidic electrolyte is achieved.

This invention discloses a bismuth-containing mixed-acid vanadium redox flow battery electrolyte, its preparation method, and its application. The desired modified battery electrolyte is obtained by adding a bismuth-containing additive to the mixed-acid vanadium redox flow battery electrolyte and then electrolyzing it. The concentration of the bismuth-containing additive in the modified battery electrolyte is 0.01 mol / L – 0.1 mol / L. The bismuth-containing additive is one or more of bismuth sulfate, bismuth formate, bismuth citrate, and bismuth tartrate, mixed in any proportion. The bismuth-containing mixed-acid vanadium redox flow battery electrolyte obtained by this invention can be used simultaneously in both the positive and negative electrode electrolytes, maintaining homogeneity between the two electrolyte systems and enabling rapid capacity recovery. Simultaneously, the mixed-acid electrolyte exhibits a triple synergistic effect of inhibiting chloride in the positive electrode, catalyzing in the negative electrode, and stabilizing vanadium ions at high temperatures, significantly improving the redox reaction kinetics and electrochemical reversibility during battery cycling, thereby achieving long-term stable battery operation.

The invention belongs to the technical field of metal materials, and particularly relates to a high-strength aluminum alloy decorative plate and a preparation method thereof. The preparation method of the aluminum alloy decorative plate comprises the following steps that an aluminum alloy base plate is immersed in a mixed acid electrolyte to be subjected to anodic oxidation treatment, and an anodic oxidation aluminum alloy plate is obtained; the anodized aluminum alloy plate is soaked in the hole sealing liquid, and the aluminum alloy decorative plate is obtained after drying; the mixed acid electrolyte is composed of lanthanum carbide, sulfuric acid, oxalic acid, dodecylbenzene sulfonic acid and water. The aluminum alloy decorative plate prepared by the invention has excellent mechanical properties, wear resistance and corrosion resistance.

The invention relates to the technical field of battery energy storage, and discloses an aqueous hydrogen solid secondary battery with long cycle life and application thereof, the battery comprises 50-60% by mass of a hydrogen modified ferrovanadium cyanide composite positive electrode, 10-15% by mass of a platinum carbon negative electrode and 25-40% by mass of a solid electrolyte, the solid electrolyte is composed of an acidic electrolyte and clay in a mass ratio of (0.5-1.5): (1-5), the acidic electrolyte is phosphoric acid or sulfuric acid with the volume concentration of 10%-85%, the clay is selected from two or three of magnesium-based silicate, bentonite and kaolin, and the preparation method of the solid electrolyte comprises the following steps: synthesizing a hydrogen-modified ferrovanadium cyanide / carbon nanotube composite positive electrode material by a solution method; preparing a platinum-carbon catalyst into a negative pole piece; carrying out ball milling on clay and an acidic electrolyte to prepare a solid electrolyte premix, and carrying out film pressing molding; finally, an all-solid-state battery structure with the positive electrode, the solid electrolyte and the negative electrode laminated is assembled in the inert atmosphere, and the battery prepared through the method has the advantages of being long in cycle life and high in safety and is suitable for the field of large-scale energy storage.

The invention relates to an assembly for a fuel cell or electrolytic cell having an acidic, alkaline, solid oxide or molten salt electrolyte, equipped with an anti-corrosion coating, and to such a fuel cell or electrolytic cell having an acidic electrolyte, said assembly comprising a non-conductive substrate (31), and an anti-corrosion coating (32) deposited on at least one surface of the substrate (31), the anti-corrosion coating (32) comprising at least one main layer based on tantalum nitride doped with one or more doping elements selected from the group of transition metals and / or lanthanide series elements.

This invention relates to the field of electrochromic functional thin film preparation technology, and particularly to a Prussian blue / polyaniline composite electrochromic thin film, its preparation method, and its applications. The invention employs a constant current method to deposit a Prussian blue underlayer on the surface of a transparent conductive substrate; the obtained Prussian blue underlayer is pre-activated in a potassium-containing electrolyte; subsequently, a polyaniline surface layer is deposited in a polymerization solution containing aniline monomers and an acidic electrolyte using a segmented constant potential method; and finally, a post-conditioning treatment is performed to obtain the Prussian blue / polyaniline composite electrochromic thin film. By introducing a pre-activation step, a segmented deposition step, and a post-conditioning step, this invention improves the interfacial bonding, ion transport, and surface uniformity of the composite film, reducing agglomeration and scattering losses caused by continuous overgrowth of polyaniline. This results in a composite film with fast response, high transmittance adjustment capability, and good cycling stability, making it suitable for electrochromic display devices, smart windows, and transmittance-adjustable optical devices.

The invention relates to the field of electrochemistry, in particular to a preparation method of a platinum electrode with controllable morphology. Comprising the following steps: taking a conductive substrate, making the conductive substrate into a long strip shape, then carrying out surface cleaning and drying, and then carrying out packaging to obtain a pretreated conductive substrate; a platinum electrode is dissolved in an acidic electrolyte solution through cyclic voltammetry, and a platinum-containing electrolyte is prepared; taking the pretreated conductive substrate as a working electrode, a platinum metal electrode as a counter electrode and an Ag / AgCl electrode as a reference electrode, putting the working electrode, the platinum metal electrode and the Ag / AgCl electrode into a platinum-containing electrolyte, and preparing the shape-controllable platinum electrode by adopting a cyclic voltammetry method. The preparation method disclosed by the invention is simple to operate and mild in reaction condition, and controllable preparation can be realized only by immersing the anode, the cathode and the reference electrode into the electrolyte and selecting proper cyclic voltammetry parameters.

A method of acid mist suppression in copper electrowinning is described. In various embodiments, at least one liquid licorice root extract, powdered licorice root extract, or reconstituted licorice extract is added in an amount sufficient to the acidic electrolyte solution of the copper electrowinning process to suppress acid mist from the acidic electrolyte solution during the copper electrowinning process. In various embodiments, combinations of licorice extract and surfactant show synergies in acid mist suppression during copper electrowinning.

The invention is applicable to the technical field of clean energy preparation, and provides a Fe-based catalyst, the catalyst FeSAs + WSAs + Fe-WCNPs / NC is formed by integrating Fe monatomic atoms, W monatomic atoms and Fe-doped WC nanoparticles on an N-doped C substrate, the size of the N-doped C substrate is 100-150nm, and the size of the Fe-doped WC nanoparticles is 2-10nm. According to the invention, by introducing a synergistic effect among Fe monatomic, W monatomic and Fe-WC particles, the oxygen reduction reaction activity in the acidic electrolyte is improved, and the half-wave potential of the acidic electrolyte in 0.1 M HClO4 reaches 0.830 VRHE; after 50,000 cycles of accelerated cyclic voltammetry test, the half-wave potential is attenuated by 14mV, and the material has relatively high electrochemical stability; the material can be used as a cathode material of a proton exchange membrane fuel cell and shows excellent practical performance.

The application discloses a ruthenium-doped nanoneedle flake carbon-supported cobalt trioxide tetroxide self-supporting electrode and a preparation method and application thereof. A mixed solution of cobalt nitrate hexahydrate, ammonium fluoride, ruthenium trichloride and urea is prepared into a ruthenium-cobalt precursor through a hydrothermal method, and the precursor is calcined in air after drying, so as to obtain an RCO catalyst grown on a carbon cloth. The catalyst has a nanoneedle flake structure, can provide a high-quality reactant transmission channel, and exhibits excellent oxygen evolution reaction electrocatalytic activity and stability in alkaline / acid electrolyte. The catalyst can be used as a high-efficiency anode catalyst for an acid / alkaline solution water electrolysis device and has a good market prospect.

The application discloses a copper-doped bismuth-based material and a preparation method and application thereof. The method comprises the following steps: preparing a nanosheet-shaped copper-doped bismuth-based material through an electrochemical reduction method from a copper-doped bismuth-based organic layer. The copper-doped bismuth-based organic layer is prepared through a hydrothermal method. The copper-doped bismuth-based material is used as an electrocatalyst in the reduction of CO2 in an acidic system. The copper-doped bismuth-based material solves the problem of how to increase the electron-rich bismuth active site, and realizes the good efficiency of electrocatalytic CO2 reduction for formic acid in an acidic electrolyte.

The invention discloses a manganese-doped ruthenium oxide nano-catalyst, a preparation method thereof, an electrode and a water electrolysis hydrogen production device, and relates to the technical field of catalytic materials. The molar ratio of ruthenium to manganese in the catalyst is (5-9): 1; the average particle size of the catalyst is 6-8 nm. The manganese element is introduced to construct a stable composite structure, the structural stability is greatly improved while high intrinsic activity is maintained, in addition, good oxygen evolution and corrosion resistance are achieved, water oxidation of the acid electrolyte is driven at a low potential, good stability is maintained, and the service life of the acid electrolyte is prolonged. And the defect of poor stability of a commercial ruthenium oxide catalyst in an acid medium is overcome. The catalyst can well adapt to large-scale hydrogen production application in the future, and reaches the application standard of clean energy in the future. The preparation method belongs to one-pot molten salt synthesis, is simple, convenient and efficient in preparation, and provides a key material solution for an efficient and long-life proton exchange membrane water electrolysis hydrogen production technology.

The present disclosure relates to graphene oxide nanosheet comprising nitrogen incorporated into its structure and to an electrochemical process for producing graphene oxide nanosheets comprising nitrogen incorporated into its structure from carbon fibres. In one embodiment of the process, carbon fibres are immersed in an acidic electrolyte solution and subjected to an electric potential to induce electrochemical exfoliation, yielding nitrogen-incorporated graphene oxide nanosheets. The method enables controlled oxidation and tuneable material properties, including nanosheet thickness, lateral dimensions, and functionalization. Compared to conventional graphite-based methods, this process offers enhanced scalability, reproducibility, and environmental sustainability. The disclosure further includes a production system, and the use of the produced nanosheets in energy storage, composite materials, coatings, flexible electronics, and tribological applications.

The invention discloses a self-powered process and device for reducing nitrate to produce ammonia and crystallizing magnesium ammonium phosphate. The device mainly comprises an internal reaction module (a diffusion chamber, a positive electrode chamber and a negative electrode chamber) and an external crystallization module (a raw material pool, a diffusion pool and a crystallization pool). The device is of a primary battery structure, NO3 <-> is subjected to catalytic reduction in the positive electrode chamber to generate NH4 < + >, the NH4 < + > is converted into NH3 gas under the alkaline condition, the NH3 gas enters the diffusion chamber through the composite positive electrode membrane assembly, and the NH4 < + > is re-protonated in the acid environment. A negative electrode Mg sheet in the negative electrode chamber is spontaneously oxidized in the acidic electrolyte to release Mg < 2 + > and supply electrons to drive nitric acid reduction reaction, so that a closed circuit is formed; nH < 4 + > and Mg < 2 + > are conveyed to a negative electrode tank, enter a crystallization tank through a cation exchange membrane and are combined with PO4 < 3-> in the crystallization tank to generate MgNH4PO4 precipitates, so that nitrogen, phosphorus and magnesium resources are synergistically recycled. The process device can realize the unification of energy self-supply, reaction separation and product high value under the condition of no external power supply, and has wide application potential.

The invention discloses a hydrogen production formaldehyde fuel cell which is characterized by comprising an anode, a cathode, a diaphragm, an anode chamber electrolyte and a cathode chamber electrolyte, wherein the anode contains an anode catalyst, and the anode catalyst is selected from at least one of formaldehyde oxidation reaction catalysts; the cathode contains a cathode catalyst, and the cathode catalyst is selected from at least one of hydrogen evolution reaction catalysts; the electrolyte in the anode chamber is an alkaline electrolyte containing formaldehyde, and the electrolyte in the cathode chamber is an acidic electrolyte; and the anode chamber electrolyte and the cathode chamber electrolyte are separated by the diaphragm. The hydrogen production fuel cell not only can realize power generation, but also can produce hydrogen at a cathode and an anode at the same time, the Faraday efficiency of hydrogen production reaches 200%, and the hydrogen production fuel cell is a novel hydrogen production formaldehyde fuel cell, has the open-circuit voltage of 1.1 V and the maximum power density of 94 mW cm <-2 >, and is good in stability, low in price, simple to operate, excellent in performance and good in application prospect.

The present invention discloses a weak acid electrolyte preparation device of a battery, and relates to the field of battery electrolyte preparation, and the weak acid electrolyte preparation device comprises: a mixed liquid bottle as a main reaction chamber for electrolyte preparation; the stock solution bottle is connected to the top of the mixed solution bottle in a penetrating manner and is used for containing high-concentration acid solution; the flow adjusting assembly comprises a valve head, the valve head is arranged at the intersection of the mixed liquid bottle and the stock solution bottle, and the valve head can be adjusted in a lifting mode; the mixing and stirring assembly comprises a stirrer for stirring the mixed liquid bottle; according to the invention, the frustum-shaped valve head is used for converting high-concentration acid liquor into a uniform thin film flowing along the inner wall, so that the heat dissipation area is greatly increased, and local hot spots are eliminated; meanwhile, a spherical stirring head and a reverse inclined blade which are in reciprocating motion are matched to drive a bottom layer solution to roll upwards along the wall and generate violent reverse mass transfer exchange with a descending acid liquid film, so that deep dilution is completed.

The application discloses an organic negative electrode material for a hydrogen ion battery, which is prepared by the following steps: reacting 2,3-dichloronaphthoquinone with a sulfur source, refluxing the reaction in a solvent for 2-12 hours, filtering, collecting a filter cake and drying to obtain DTT; assembling the hydrogen ion battery by taking the DTT as an anode and taking MnO2 as a cathode in an acidic electrolyte. The application aims to solve the problems of high pollution, high electrode cost and short service life of the existing hydrogen ion battery.

The invention belongs to the technical field of electrochemical energy conversion and storage, and discloses a high-performance membrane electrode based on a Cr3C2-RuCu bifunctional catalyst and a preparation method and application of the high-performance membrane electrode based on the Cr3C2-RuCu bifunctional catalyst, and the preparation method of the Cr3C2-RuCu bifunctional catalyst comprises the following steps: step S1, preparing multiple layers of Cr3C2; step S2, loading the RuCu nano particles; the catalytic performance is excellent; the HER end shows low overpotential in an acidic electrolyte; the OER end also has excellent catalytic kinetics in the alkaline electrolyte, and the cost is reduced by more than 50%; the mass transfer efficiency is high: the Cr3C2 is of a porous structure, the Cr3C2 carrier has an accordion-shaped multi-layer structure, the specific surface area is greater than or equal to 200m < 2 > / g, the Cr3C2 carrier and a polymeric membrane form a'gradient pore channel ', the interface resistance is reduced by 20-30%, and the H < + > / OH <-> conduction rate is improved by 15-25%; the preparation of the Cr3C2-RuCu catalyst adopts an etching-reduction method, the assembly of the membrane electrode is realized through spraying, blade coating and hot pressing, no complex equipment is needed, and the method is suitable for industrial mass production.