62 results about "Hydrogen oxidation reaction" patented technology

The invention provides a self-humidifying CO2 membrane electrode structure and a preparation method thereof. The self-humidifying CO2 membrane electrode structure comprises an electrolyte isolation plate, the electrolyte isolation plate is provided with an anode side and a cathode side, the anode side is sequentially provided with a cation exchange membrane, an anode catalyst layer, a current collector and an anode electrode plate, and the cathode side is sequentially provided with an anion exchange membrane, a cathode catalyst layer and a cathode electrode plate; the anode electrode plate is provided with a first inlet, hydrogen enters the anode electrode plate from the first inlet and is subjected to a hydrogen oxidation reaction under the action of an anode catalyst to generate protons and electrons, and the protons are migrated to the electrolyte isolation plate through the cation exchange membrane; the cathode electrode plate is provided with a second inlet, CO2 gas enters the cathode electrode plate from the second inlet and is subjected to a reduction reaction under the action of a cathode catalyst to generate a reduction product and OH <->, and OH <-> is migrated to the electrolyte isolation plate through the anion exchange membrane to react with protons. The long-term operation stability of the membrane electrode structure is remarkably improved.

The present application relates to a kind of full solid-state lithium ion membrane reactor with symmetrical structure and its application, the reactor is in situ construction on the both sides of solid-state lithium ion conductor film with Pt and / or Ni as catalyst, with single-walled carbon nanotube etc. Conductive material is used as current collector gas diffusion electrode, the reactor can work in nitrogen hydrogen mixture atmosphere, integration is high, scale is flexible.The present application changes the working mode of traditional reactor using liquid electrolyte, replaces inefficient nitrogen and proton mass transfer with efficient lithium ion mass transfer, couples lithium-mediated nitrogen reduction and hydrogen oxidation reaction to synthesize ammonia, and the maximum working current density is increased to 1000mA / cm 2 , and can work at 40mA / cm 2 Current density for a long time, with innovation and broad industrial application prospect.

A hybrid electrochemical device configuration that comprises a first electrode that includes a redox reactive material or an alloy based on a transition metal, a second electrode that includes a multi-functional catalyst to catalyze hydrogen evolution reaction, hydrogen oxidation reaction, and water oxidation reaction at the second electrode, a separator disposed between the first and second electrode, an electrolyte disposed between the first electrode and the second electrode, and a conduit which provides the means to compensate for water loss in the electrolyte during electrochemical device operation. At least one valve is included that connects the electrolyte management system to the conduit system and a valve to connect the gas formed in the electrode to the gas management system. The electrochemical device configurations include several individual devices stacked on top of each other and separated from each other using separation plates.

The invention belongs to the technical field of anion exchange membrane fuel cells, and discloses a high-stability ruthenium-based hydroxide electrocatalyst used as an anode of an anion exchange membrane fuel cell and a preparation method of the high-stability ruthenium-based hydroxide electrocatalyst. The catalyst is prepared by taking ruthenium as a unique active component, fullerene (C60) as a carbon substrate and polydopamine (PDA) as an additive through argon heat treatment. The preparation method disclosed by the invention is simple and easy to implement, and through the design scheme that C60 with high electron affinity is used as a carrier, the electronic structure of a ruthenium active site is effectively adjusted, and excessive adsorption of a ruthenium-based catalyst to hydroxyl species in a hydrogen oxidation reaction (HOR) process is weakened, so that the ruthenium reaction active site is greatly reserved for hydrogen adsorption, and the hydrogen adsorption efficiency is improved. Therefore, the stability of ruthenium-based electro-catalysis in hydrogen oxidation reaction can be greatly improved.

The invention discloses a Ru / Ni-3DONMC catalyst as well as a preparation method and application thereof, and relates to the technical field of new energy materials and electrochemical catalysis. According to the invention, self-designed ordered SiO2 microspheres are self-assembled as a template, a nitrogen-doped carbon carrier with a three-dimensional ordered hierarchical pore structure is constructed, and a composite catalytic system with a multi-stage active center is successfully prepared by combining a bimetallic precursor adsorption impregnation and thermal reduction process. The catalyst disclosed by the invention shows excellent bifunctional catalytic performance in an alkaline medium; only 16 mV overpotential is needed in a hydrogen evolution reaction under the current density of 10 mA cm <-2 >, and the Tafel slope is as low as 40.54 mV / dec; and in a hydroxide reaction, the material has high limiting current density of 2.55 mA cm <-2 > and excellent mass activity. And it is powerfully proved that the intrinsic catalytic activity and long-term operation stability of the hydrogen-electricity reaction can be effectively improved through a monatomic-nanocluster cooperative regulation strategy.

Methods and apparatuses for converting carbon dioxide to useful compounds are disclosed. The method involves reducing bicarbonate solution in an electrolyzer. Bicarbonate solution is supplied to the cathode. The direct reduction of bicarbonate at the cathode may be coupled with an oxidation reaction at the anode. The oxidation reaction may provide a source of protons (H+) to cathode for the reduction of bicarbonate. The oxidation reaction may be a hydrogen oxidation reaction (HOR). Hydrogen gas (H2) may be supplied to the anode. In some embodiments, a source of gas may be supplied to the bicarbonate solution to form a pressurized solution before supplying the solution to the cathode.

This invention discloses a platinum-based catalyst for the hydrogenation reaction, its preparation method, and an electrode. The catalyst uses orthorhombic niobium pentoxide (T-Nb₂O₅) as a support to support the active component platinum. The support is resistant to strong acids and electrochemical corrosion at potentials above 1.0 V (vs RHE). The catalyst exhibits a hydrogenation reaction current density of not less than 200 mA·cm⁻¹ at 0.45 V (vs RHE). ‑2 In preparation, ammonium niobate oxalate hydrate was used as the niobium source, and the mixture was gelled via a sol-gel method. The gel was then heat-treated at 600-700℃ to obtain an orthorhombic niobium pentoxide support. The pH was adjusted to less than 3, and platinum was reduced with sodium borohydride to prepare the catalyst. This catalyst was then used to fabricate a hydrogen depolarization anolyte gas diffusion electrode with a platinum loading of 0.5-1.0 mg·cm³. ‑2 It can operate continuously and stably for no less than 120 hours with a cell voltage in the range of 1.25-1.45V. The catalyst of this invention has high activity and excellent stability, and can be used as a hydrogen depolarization anode in hydrometallurgy, significantly reducing electrolysis energy consumption and making it suitable for industrial applications.

This invention discloses a proton exchange membrane hydrogen pump anode and its application. The anode includes an anode sheet and a catalyst composited on the anode sheet. The catalyst includes a support and a first metal and a second metal composited on the support. The first metal is selected from one or more of platinum, iridium, palladium, and ruthenium; the second metal is selected from one or more of iron, cobalt, nickel, molybdenum, and vanadium. The first metal serves as the main active center for the hydrogen oxidation reaction, and the second metal can regulate the electronic structure of the first metal, thereby reducing the adsorption of carbon monoxide at the active site or promoting its oxidative removal. The synergistic effect of the two metals allows the anode containing the catalyst to maintain high hydrogen oxidation activity and stability in hydrogen fuel containing carbon monoxide, thereby improving the carbon monoxide poisoning resistance of the proton exchange membrane hydrogen pump containing the anode.

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.

This invention discloses a Se-doped Pt-based catalyst, its preparation method, and its application, relating to the field of catalyst technology. The preparation method of the Se-doped Pt-based catalyst includes the following steps: (1) mixing conductive carbon black and selenium dioxide powder uniformly to obtain a mixture; (2) heating the mixture to 250-350℃ under an inert atmosphere and holding for 0.5-2 h; (3) subsequently heating to 950-1100℃ and holding for 0.5-2 h to obtain powder A; (4) dissolving a platinum source in water to obtain solution B, then adding powder A to solution B and mixing uniformly, followed by rotary evaporation, grinding, and heating in a mixed atmosphere of H2 and Ar to obtain the Se-doped Pt-based catalyst. The Se-doped Pt-based catalyst prepared by the method of this invention exhibits high catalytic activity and stability in the hydrogenation reaction.

The invention provides a preparation method and application of a catalyst based on a crystal platinum / amorphous vanadium oxide cluster-cluster heterostructure. The preparation method comprises the following steps: S1, synthesizing an amorphous vanadium oxide cluster; s2, synthesizing a crystal platinum cluster; and S3, synthesizing the heterostructure catalyst. Through precise synthesis and interface engineering, precise assembly of amorphous vanadium oxide clusters and precise platinum clusters is realized, a highly dispersed and uniform heterogeneous interface is obtained, and the catalyst is endowed with excellent catalytic activity and stability in alkaline hydrogen oxidation reaction.

The invention belongs to the technical field of fuel cell electrocatalysts, and particularly relates to a carbon monoxide poisoning resistant electrocatalyst for a hydroxide reaction and a preparation method of the carbon monoxide poisoning resistant electrocatalyst. The preparation method comprises the following steps: impregnating and reducing noble metals (Pt, Pd, Ir, Rh, Ru and the like) on a transition metal-nitrogen-carbon (M-N-C, M = Fe, Co, Ni, Cu, Zn and the like) carrier by virtue of an impregnation and reduction method, and creatively synthesizing the M-N-C supported noble metal alloy electrocatalyst by virtue of a one-step pyrolysis method. The electrocatalyst prepared by the invention has excellent hydrogen oxidation activity, carbon monoxide poisoning resistance and durability, the preparation method is simple, clean and environment-friendly, the equipment investment is low, batch production is facilitated, and a new thought is provided for preparing the carbon monoxide poisoning resistance electrocatalyst for hydrogen oxidation reaction.

The invention provides a nickel-based alloy composite zinc-nitrogen-carbon material and a preparation method thereof.The preparation method comprises the steps that after zinc salt, a nitrogen-containing organic compound and a solvent are fully stirred and mixed, heating treatment is conducted in the inert atmosphere, and the zinc-nitrogen-carbon material is obtained; and adding nickel salt and molybdenum salt into the zinc-nitrogen-carbon material, and carrying out thermal reduction in an inert atmosphere to obtain the nickel-based alloy composite zinc-nitrogen-carbon material. Compared with a commercial platinum-based catalyst, the nickel-based alloy composite zinc-nitrogen-carbon material has the advantages that the nickel-based alloy and the zinc-nitrogen-carbon material are cheap materials, the cost is greatly reduced, meanwhile, the preparation process is simple, the raw materials are wide in source, and the nickel-based alloy composite zinc-nitrogen-carbon material is suitable for large-scale preparation and application; the nitrogen-carbon nano-porous structure endows the catalyst with high specific surface area and rich attachment sites, so that nickel-molybdenum alloy particles can be highly dispersed on the catalyst, more active sites are exposed, gas can easily participate in the reaction, and the catalytic activity of the hydrogen oxidation reaction is further improved.

The present disclosure relates to a noble metal single atom or cluster-porous molybdenum carbide / carbon nanocomposite using dynamic arrangement of noble metal single atoms or clusters, a method for preparing the same, a catalyst for hydrogen evolution reaction or hydrogen oxidation reaction including the same, and an electrode including the catalyst. The noble metal single atom or cluster-porous molybdenum carbide / carbon nanocomposite of the present disclosure, which is prepared by uniformly bonding a noble metal catalyst only on molybdenum carbide in the form of single atoms or clusters in atomic scale through selective dynamic arrangement, may have remarkably improved catalytic activity and kinetic characteristics since the utilization of the noble metal is improved through selective dynamic arrangement of the noble metal catalyst, may have high stability due to strong interaction between the noble metal catalyst and the molybdenum carbide, and may have high tolerance to carbon monoxide.In addition, the use of the noble metal can be decreased and the nanocomposite can be used as a catalyst for electrochemical hydrogen evolution reaction (HER) or hydrogen oxidation reaction (HOR) under acidic and basic conditions because it has superior catalytic activity, high stability and high tolerance to carbon monoxide. Furthermore, it can be prepared at low cost by a simple synthesis method and has good commercial viability.

A hybrid electrochemical device configuration that comprises a first electrode that includes a redox reactive material or an alloy based on a transition metal, a second electrode that includes a multi-functional catalyst to catalyze hydrogen evolution reaction, hydrogen oxidation reaction, and water oxidation reaction at the second electrode, a separator disposed between the first and second electrode, an electrolyte disposed between the first electrode and the second electrode, and a conduit which provides the means to compensate for water loss in the electrolyte during electrochemical device operation. At least one valve is included that connects the electrolyte management system to the conduit system and a valve to connect the gas formed in the electrode to the gas management system. The electrochemical device configurations include several individual devices stacked on top of each other and separated from each other using separation plates.

A process for preparing a catalyst, as well as a catalyst, the catalyst comprising an oxygen evolution reaction electrocatalyst OER, a hydrogen oxidation reaction HOR electrocatalyst, and a particulate solid support are described. The OER electrocatalyst and the HOR catalyst are both supported on the particulate solid support. The OER is deposited from an aqueous mixture comprising a particulate solid support and a halide free metalate which comprises iridium and / or ruthenium. The pH of the mixture is reduced to ≤7 to precipitate the oxygenated metal into the solid particulate support. In the process, the OER electrocatalyst is deposited before the HOR electrocatalyst. The catalyst may be incorporated into a catalyst coated membrane (CCM) and used in a fuel cell. [Figure 1a]

The invention relates to a preparation process of a bifunctional Ru / C catalyst applied to coupling thermocatalytic methanol dehydrogenation and electrocatalytic hydroxidation reaction, belonging to the technical field of methanol hydrogen production. TDI industrial waste residue is used as a raw material, and through the links of pyrolysis activation, supercritical methanol modification, bimetal freezing loading, activation, interface bonding construction, hydrophobic layer coating and the like, the Ru / C catalyst is prepared. The catalyst solves the problems that an existing Ru / C catalyst is sensitive to CO poisoning, easy to sinter at a high temperature, high in component and the like, the Ru utilization rate is high, the activity attenuation is reduced after long-time operation, the components are effectively reduced, and the catalyst is suitable for the process requirements of methanol hydrogen production-synthesis gas co-production.

Disclosed is a catalyst for hydrogen evolution reaction or hydrogen oxidation reaction, which is a catalyst that can be used under alkaline conditions and has significantly improved kinetic characteristics compared to existing commercial platinum catalysts. The present invention provides a catalyst for electrochemical hydrogen reaction under alkaline conditions and a method for preparing the same, and a ruthenium-based catalytic electrode containing the same, which can be used as an electrode for anion exchange membrane-based water electrolysis cell and fuel cell, wherein the catalyst has 2 to 20 ruthenium supported in an aggregate form on the surface of a molybdenum carbide-carbon nanocomposite carrier.

The present invention relates to the technical field of new energy materials and the field of electrocatalytic water splitting, and specifically to a single-site selenium-modified platinum wrinkled nanoparticle catalyst, a preparation method, and an application. The present invention obtains amorphous PtSe2 WNPs by a hydrothermal method and forms a unique non-metallic single-site structure through a subsequent heat treatment process to obtain a Pt-based nanomaterial rich in single-atom selenium. A strong interaction occurs between the single-site Se and the adjacent Pt atoms, causing the Pt to be in an electron-deficient state, thereby optimizing the adsorption and desorption of reaction intermediates on the Pt site and reducing the dissociation energy barrier of water molecules on the Pt site, ultimately improving the alkaline HOR / HER catalysis of the Pt-based nanomaterial. In addition, the Pt-based nanomaterial produces a defective structure, thereby controlling the activation of reactants and the adsorption and desorption of intermediates in the catalytic reaction, and promoting the kinetic process of hydrogen evolution reaction and hydrogen oxidation reaction under alkaline conditions.

The invention discloses an anti-CO poisoning PtRu / C catalyst as well as a preparation method and application thereof, and belongs to the technical field of fuel cells. According to the preparation method, firstly, the surface of a carbon carrier is modified through cooperation of acid oxidation and high-temperature annealing, then PtRu alloy particles are accurately loaded by combining an ethylene glycol reduction method, and the high-dispersion carbon-loaded PtRu catalyst is obtained; the catalyst prepared in the invention has high hydroxidation reaction catalytic activity and CO poisoning resistance, and can significantly improve the stability and working efficiency of a fuel cell in impurity-containing hydrogen when applied to a fuel cell anode catalytic reaction.

The invention discloses a green electrochemical ammonia production method, which comprises a reduction reaction tank and an oxidation reaction tank which are separated by a proton conduction / permeable membrane, according to the method, an electrolyte containing metal salt capable of participating in electrochemical reaction, an aromatic mediator and an organic solvent is mainly utilized, and high-efficiency conversion from nitrogen to ammonia gas is realized under the conditions of normal temperature and normal pressure; the cathode is subjected to lithium deposition and nitrogen activation reaction, lithium nitride is generated through an aromatic mediator, and ammonia gas is released through protonation; the anode performs a hydroxide reaction to provide a continuous and stable proton source; the method has high selectivity, energy efficiency and modularization potential, can replace a traditional high-energy-consumption Harber method, and is widely applied to green manufacturing procedures of ammonia fuel, fertilizer and hydrogen storage carriers.

The invention discloses an IrSA-Ni3N-t twin crystal nanosheet electrocatalyst as well as a preparation method and application thereof, and belongs to the technical field of two-dimensional nano material catalysts. According to the preparation method, the Ir-atom-doped Ni3N twin crystal nanosheet is prepared by simply nitriding the Ir-substituted nickel hydroxide nanosheet through a high-temperature annealing method. According to the prepared IrSA-Ni3N-t twin crystal nanosheet electrocatalyst, Ir monatomic is doped in Ni3N crystal lattices to reduce stacking fault energy, twin crystals are induced to be formed through high-temperature nitridation, the capacity of a reaction interface for hydroxyl adsorption and transmission and hydrogen bond network connectivity is effectively adjusted, and therefore the alkaline hydroxide reaction performance is improved. The catalyst shows catalytic activity, CO tolerance and long-term stability which are obviously superior to those of a commercial platinum-carbon catalyst in an anion exchange membrane fuel cell anode hydroxide reaction.

The present invention relates to an all-solid-state lithium-ion membrane reactor having a symmetrical structure and a use thereof. The reactor is a gas diffusion electrode constructed in situ on two sides of a solid-state lithium-ion conductor membrane, wherein Pt and / or Ni are used as catalysts and a conductive material such as single-walled carbon nanotubes is used as a current collector. The reactor can work in a nitrogen-hydrogen mixed atmosphere, having a high level of integration and a flexible scale. The present invention changes the working mode of a conventional reactor that uses a liquid electrolyte, replaces the inefficient nitrogen and proton mass transfer with efficient lithium-ion mass transfer, couples lithium-mediated nitrogen reduction and a hydrogen oxidation reaction to synthesize ammonia, increases the maximum working current density to 1000 mA / cm2, and can work for a long time under the current density of 40 mA / cm2. The present invention is innovative and has wide industrial application prospects.

The invention relates to the technical field of electrocatalysis, and discloses a hydroxide anode for preparing carbon monoxide through electrochemical reduction of carbon dioxide and a preparation method thereof.The hydroxide anode for preparing carbon monoxide through electrochemical reduction of carbon dioxide comprises a base material and a catalyst arranged on the base material, the catalyst comprises a cobalt-chromium-molybdenum alloy and a coating layer coating the outer surface of the cobalt-chromium-molybdenum alloy, and the coating layer comprises a carbon coating layer and tungsten oxide loaded on the carbon coating layer. The molybdenum element, the cobalt element and the chromium element form an alloy, and CO accumulation is reduced. The surface of the cobalt-chromium-molybdenum alloy is coated with the carbon coating layer, the conductivity of the hydroxide anode is improved, CO molecules are prevented from making contact with the surface of the alloy, in the long-term use process, the activity of a catalyst cannot be reduced due to CO poisoning, the hydroxide reaction can be efficiently conducted in the electrolysis process, the Faraday efficiency is improved, and the stability of the electrode is guaranteed. Tungsten oxide is loaded on the surface of the carbon coating layer, so that the activity and the stability are further improved.

The present invention discloses a green electrochemical ammonia production method, comprising a reduction cell and an oxidation cell separated by a proton-conductive / exchange membrane. The method employs an electrolyte containing metal salts capable of participating in electrochemical reactions, aromatic mediators, and organic solvents to achieve an efficient conversion of nitrogen to ammonia under ambient temperature and pressure. At the cathode, lithium deposition and nitrogen activation occur, generating lithium nitride via the aromatic mediator, which is subsequently protonated to release ammonia. At the anode, a hydrogen oxidation reaction provides a continuous and stable proton source. The invention offers high selectivity, energy efficiency, and modular scalability, serving as a sustainable alternative to the conventional energy-intensive Haber-Bosch process, and is applicable to green processes for ammonia fuels, fertilizers, and hydrogen storage carriers.

This invention discloses a hydrogen-assisted rechargeable battery method for hydrogen storage and production, belonging to the field of hydrogen energy storage and electrochemical energy storage technology. The method includes four core steps: battery assembly, circulating electrolyte supply, charging for hydrogen storage, and discharging for hydrogen production. During charging, hydrogen-containing gas is introduced into the cathode, where a hydroxide reaction occurs, and metal ion reduction and deposition occur at the anode, storing hydrogen energy as a metallic element in a solid state under normal pressure. During discharging, a metal oxidation and dissolution reaction occurs at the anode, and a hydrogen evolution reaction occurs at the cathode, generating hydrogen gas in situ and releasing hydrogen energy on demand. This invention eliminates the oxygen evolution reaction of traditional water electrolysis, using hydroxide coupled with metal oxidation-reduction to achieve hydrogen energy storage and release. It offers high storage safety, low reaction overpotential, high energy efficiency, and good cycle reversibility, solving the problems of poor safety, high energy consumption, and low energy efficiency in existing hydrogen storage technologies. It can be widely applied to renewable energy hydrogen production, large-scale hydrogen energy storage, and distributed hydrogen energy supply scenarios.

This invention relates to a method for preparing a highly efficient and stable titanium dioxide-supported nickel-based non-precious metal catalyst and its application. Nickel-based hydroxide powder is prepared using a non-precious metal salt as a metal precursor. The prepared nickel-based hydroxide powder is then uniformly mixed with titanium dioxide and calcined under high-temperature hydrogen conditions to form a titanium dioxide-supported nickel-based non-precious metal catalyst. Compared with traditional nickel-based non-precious metal catalysts, this titanium dioxide-supported nickel-based non-precious metal catalyst can effectively catalyze the hydrogen oxidation reaction under alkaline conditions within a potential range of 0–1.2 volts. The titanium dioxide-supported nickel-based non-precious metal catalyst prepared by this invention, when used as an electrocatalyst for hydrogen oxidation reactions under alkaline conditions, offers advantages such as simple preparation method, high reactivity, high stability, and low cost, and has broad application prospects in the field of electrochemical energy storage and conversion.

The invention belongs to the technical field of sensors, and particularly relates to a doped type hydroxide catalyst for an electrochemical type hydrogen sensor and a preparation method and application of the doped type hydroxide catalyst. According to the hydroxidation catalyst provided by the invention, catalytic active metal platinum is loaded in carbon-based catalyst carriers such as bromine and boron doped conductive carbon black, so that the electroneutrality of the conductive carbon black is destroyed, and the electron distribution and charge density of the conductive carbon black are effectively adjusted; the d-band center and coordination environment of the catalytic active metal platinum are regulated and controlled, and the energy barrier of the hydrogen oxidation reaction is reduced; meanwhile, the doped bromine and boron have relatively strong interaction with the catalytic active metal platinum, so that the catalytic active metal platinum is not easy to agglomerate, migrate or fall off; therefore, when the catalyst provided by the invention is applied to the electrochemical hydrogen sensor, the electrochemical hydrogen sensor shows high sensitivity and quick response, meanwhile, the stability is kept in a lasting operation process, and the catalyst is a high-performance hydrogen oxidation catalyst meeting the strict requirements of the hydrogen sensor.

The invention belongs to the technical field of electrocatalysts and fuel cells, and discloses a method for improving the alkaline hydroxide performance of a platinum-carbon electrocatalyst by constructing a proton transmission channel and the platinum-carbon catalyst. According to the method, the platinum-carbon catalyst with a proton transmission channel is obtained by modifying the platinum-carbon catalyst with conjugate alkali of weak acid aiming at an electro-catalytic alkaline hydroxide reaction, so that the electro-catalytic hydroxide catalytic performance of the platinum-carbon catalyst under an alkaline condition is improved. The constructed platinum-carbon catalyst with the proton transmission channel shows high catalytic activity, strong stability and CO poisoning resistance in an electro-catalysis alkaline hydroxide reaction.

The present invention provides a process for preparing a catalyst, as well as a catalyst, the catalyst comprising an oxygen evolution reaction electrocatalyst, a hydrogen oxidation reaction electrocatalyst, and a particulate solid support, wherein the oxygen evolution reaction electrocatalyst and the hydrogen oxidation reaction catalyst are both supported on the particulate solid support. In the process, the oxygen evolution reaction electrocatalyst is deposited before the hydrogen oxidation reaction electrocatalyst by using a halide-free metallate as precursor.