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32results about How to "Improve hydrogen evolution catalytic activity" patented technology
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Nitrogen-phosphorus double-doped carbon-coated transition metal diphosphide hydrogen evolution catalyst and preparation method thereof
InactiveCN107362818AHigh activityImprove stabilityCatalyst activation/preparationElectrodesPlatinumStructural formula
The invention relates to a nitrogen-phosphorus double-doped carbon-coated transition metal diphosphide hydrogen evolution catalyst and a preparation method thereof. The nitrogen-phosphorus double-doped carbon-coated transition metal diphosphide is characterized in that the structural formula is MP2@NPC, a transition metal diphosphide MP2 is used as a core, nitrogen-phosphorus double-doped carbon NPC is used as a shell so that a core-shell structure is formed, the diphosphide has a nano-particle structure, the particle size is less than 50nm and good crystallinity is obtained. The composite catalyst has the electrocatalytic hydrogen evolution activity similar to that of the commercial platinum carbon and catalyst stability better than that of the commercial catalyst. The catalyst has a wide application prospect.
Owner:WUHAN UNIV OF TECH
Structure, constitution of electrocatalytic hydrogen evolution electrode and manufacturing method thereof
InactiveCN1763251AImprove hydrogen evolution catalytic activityElectrode performance is stableElectrodesSolar waterAdhesive
The present invention is structure, composition and manufacture of electrically catalytic hydrogen separating electrode. The structure of the electrically catalytic hydrogen separating electrode consists of fluid collecting layer and catalyzing layer compounded together. The catalyzing layer has mixed catalyst powder and adhesive, and may have also conducting powder. The electrically catalytic hydrogen separating electrode in completely new structure has the features of high hydrogen separating catalyzing activity, stable performance, long service life, etc. and may be used widely in chloralkali industry, water electrolyzing industry, solar water electrolyzing hydrogen production, electrochemical hydrogen storing, hydrogen making system, etc.
Owner:TIANJIN UNIV
Preparation method and application of MoS2/transition metal/graphene composite hydrogen dissociation electrode in microbial electrolytic tank
InactiveCN108191075AEasy to makeReduce energy consumptionWater treatment parameter controlWaste water treatment from animal processingPollutionReducing agent
The invention discloses a preparation method and application of an MoS2 / transition metal / graphene composite hydrogen dissociation electrode in a microbial electrolytic tank. The preparation method comprises the following steps: (1) dissolving graphene oxide with deionized water, performing ultrasonic peeling to obtain a graphene oxide solution, then, adding ammonium tetrathiomolybdate, a salt compound of transition metal and a reducing agent in sequence, and dispersing uniformly to obtain a mixed solution; (2) transferring the mixed solution into a reaction kettle, preserving heat for 10 to 12hours at 170 to 200 DEG C, and centrifuging, washing and drying a product to obtain the MoS2 / transition metal / graphene composite hydrogen dissociation catalyst; (3) uniformly loading an electrode material with the MoS2 / transition metal / graphene composite hydrogen dissociation catalyst to obtain the hydrogen dissociation electrode. According to the preparation method and the application of the MoS2 / transition metal / graphene composite hydrogen dissociation electrode in the microbial electrolytic tank, a reaction system is uniform; the production cost is low; the MoS2 / transition metal / graphene composite hydrogen dissociation electrode has good electrochemical performance, has a good catalytic hydrogen production effect, and can achieve double effects of treating pollution and producing energy.
Owner:太原学院
Preparation method of porous nickel base alloy electrolysis hydrogen evolution cathode material
InactiveCN107268019ALarge specific surface areaImprove hydrogen evolution catalytic activityElectrode shape/formsElectrolysisOverpotential
The invention discloses a preparation method of a porous nickel base alloy electrolysis hydrogen evolution cathode material. The preparation method is characterized in that four kinds of high-purity element powder, by mass percent, namely, 20-42% of Cr, 4-12% of Fe, 1-6% of Co and the balance Ni are mixed uniformly and dried, then compression moulding is carried out and thus a green body is obtained, and by using the solid phase partial diffusion principle, the green body is subjected to vacuum sintering, and a Ni-Cr-Fe-Co porous material is synthesized after reaction. The prepared porous material has the advantages of high specific surface area, low hydrogen evolution overpotential, relatively excellent corrosion resistance, good chemical stability, high mechanical strength and the like, and the preparation method is simple and environment-friendly, and has great significance in the development and application of hydrogen energy.
Owner:XIANGTAN UNIV
N-doped porous carbon-coated MoP nanorod material, and preparation method and application thereof
ActiveCN112007673AHigh catalytic activityEasy to operateCatalyst activation/preparationCarbon preparation/purificationPorous carbonActive agent
The invention discloses an N-doped porous carbon-coated MoP nanorod material, and a preparation method and application thereof. The preparation method of the N-doped porous carbon-coated MoP nanorod material comprises the following steps: 1) performing a contact reaction on MoO3 nanorods, a surfactant, a zinc source and dimethylimidazole in a solvent to prepare precursor powder; and 2) calcining and carbonizing the precursor powder under protective gas, and then performing phosphating treatment on the calcined and carbonized product to obtain the N-doped porous carbon-coated MoP nanorod material. The N-doped porous carbon-coated MoP nanorod material has excellent catalytic activity, so the N-doped porous carbon-coated MoP nanorod material can be applied to HER electrocatalysis; and meanwhile, the preparation method has the advantages of simplicity in operation and uniform and controllable morphology.
Owner:ANHUI NORMAL UNIV
Photo-electrochemical hydrogen evolution electrode based on MoS2 and Ag modified silicon nanowire array and application thereof
InactiveCN104630821AReduce reservesImprove energy conversion efficiencyEnergy inputElectrode shape/formsEtchingDecomposition
The invention discloses a photo-electrochemical hydrogen evolution electrode based on a MoS2 and Ag modified silicon nanowire array and a three-electrode system and an application thereof. The photo-electrochemical hydrogen evolution electrode based on the MoS2 and Ag modified silicon nanowire array comprises a silicon nanowire array, a Ag nano-granule layer and a MoS2 nano-granule layer with a charge transfer function, wherein the silicon nanowire array is prepared from a two-step metal-assisted catalysis electroless etching method; the MoS2 nano-granule layer is compounded on the surface of the silicon nanowire array modified by the Ag nano-granule layer by a thermal decomposition technology. By means of increasing the Ag in the MoS2 modified silicon nanowire array as a charge transfer medium, the charge transfer of the solid-solid interface is increased, so that more photo electrons for the hydrogen reduction reaction on the MoS2 can be provided, the participation probability of the photo electrons in the hydrogen reduction reaction is greatly increased and the energy conversion efficiency is increased, and the three-electrode system is constructed for industrial water decomposition to obtain the hydrogen energy.
Owner:重庆市环境科学研究院
Ni-Fe-Mo-Cu porous material and preparation method thereof
ActiveCN108315596AMany poresEvenly distributedTransportation and packagingMetal-working apparatusEnvironmental resistanceElectrolysis
The invention discloses a preparation method of a Ni-Fe-Mo-Cu porous material. The preparation method comprises the following steps: uniformly mixing powder with the granularity of 3 to 10mu m of fourtypes of high-purity elements including Ni, Fe, Mo and Cu according to the mass percent ratio of 15 to 35 percent of the Fe, 1 to 8 percent of the Mo, 1 to 7 percent of the Cu and the balance of theNi, and drying; then doping stearic acid and pressing and molding to obtain a green body; carrying out vacuum sintering on the green body by utilizing a solid-phase partial diffusion principle to prepare the Ni-Fe-Mo-Cu porous material. The porous material prepared by the preparation method has the advantages of abundant and uniformly-distributed pores, relatively high specific surface area and mechanical strength, relatively low hydrogen evolution overpotential and relatively good corrosion resistance property and chemical stability; a preparation technology is simple and environmentally friendly, has potential application value in the fields of electrolysis hydrogen evolution and industrial filtering and has great significance.
Owner:XIANGTAN UNIV
Preparation method for molybdenum disulfide/carbon composite material, catalyst and preparation method thereof
InactiveCN108212178AImprove hydrogen evolution catalytic activityImprove conductivityPhysical/chemical process catalystsElectrodesSulfur containingHydrothermal synthesis
The invention provides a preparation method for molybdenum disulfide / graphitized carbon composite material, a catalyst and a preparation method thereof. The preparation method for molybdenum disulfide / graphitized carbon composite material comprises the following steps: performing a hydrothermal synthesis reaction on a sulfur-containing reducing agent, molybdate and ascorbic acid; sintering a product of the hydrothermal synthesis reaction to obtain the molybdenum disulfide / graphitized carbon composite material. The catalyst is prepared from the molybdenum disulfide / graphitized carbon compositematerial, the molybdenum disulfide / graphitized carbon composite material is prepared from molybdenum disulfide being of a layer structure and graphitized carbon inserted into adjacent layers of the layer structure. According to the preparation method for the catalyst applied to electrochemical hydrogen evolution, the prepared molybdenum disulfide / carbon composite material, is taken as the catalyst. The preparation method has the advantages of readily-available raw material, simple synthesis process, capability of preparing the molybdenum disulfide / carbon composite material which has high conductivity and catalytic property.
Owner:ZHENGZHOU UNIV
Ni-S-W-C hydrogen evolution electrode and preparation method thereof
ActiveCN106702419AReduce hydrogen evolution overpotentialImprove hydrogen evolution catalytic activityElectrodesHydrogenHydrogen evolution
The invention provides a Ni-S-W-C hydrogen evolution electrode comprising a nickel base body and a Ni-S-W-C coating layer deposited on the surface of the nickel base body. The Ni-S-W-C coating layer comprises, by weight, 50%-80% of Ni, 5%-20% of S, 0.1%-1.5% of W and the balance C. The W and C elements are added to a Ni-S coating layer to form the Ni-S-W-C coating layer. The Ni-S-W-C coating layer has low hydrogen evolution over potentiality, high hydrogen evolution catalytic activity and excellent stability and can be widely used as an alkaline water electrolysis hydrogen evolution electrode material. According to the embodiment, the Ni-S-W-C hydrogen evolution electrode provided by the invention has the hydrogen evolution over potentiality being 270mV, the apparent current density being 5.27x10<2> mA / cm<2>, and has higher hydrogen evolution catalytic activity.
Owner:CENT SOUTH UNIV
Ni-Cr-Al-Cu porous material and manufacturing method thereof
ActiveCN108380882AOvercome efficiencyOvercome mechanical propertiesElectrode shape/formsAl powderHydrogen
The invention discloses a manufacturing method of an Ni-Cr-Al-Cu porous material. The manufacturing method comprises the steps that a powder reaction synthesis method is adopted, and high-purity Ni powder, high-purity Cr powder, high-purity Al powder and high-purity Cu powder are prepared in a certain ratio, wherein the total content of the Cr powder, the Al powder and the Cu powder is 22wt%-45wt%of the total content; after the prepared powder is uniformly mixed and dried, stearic acid is added, and drying is conducted again; pressure forming is conducted, so that a green blank is obtained; and vacuum sintering is conducted on the green blank by the use of the solid phase partial diffusion principle, so that the Ni-Cr-Al-Cu porous material is manufactured. The porous material manufacturedaccording to the manufacturing method has the low hydrogen evolution overpotential, the large specific surface area, excellent corrosion resistance, good catalytic performance and stable working performance, and a manufacturing technology of the porous material is simple and environmentally friendly, has the potential application value in the fields of hydrogen electrolysis evolution and industrial filtering, and has an important significance.
Owner:XIANGTAN UNIV
One-dimensional molybdenum phosphide nanorod and preparation method and application thereof
ActiveCN111013617AImprove hydrogen evolution catalytic activityIncrease surface active sitesPhysical/chemical process catalystsElectrodesNanoparticleCentrifugation
The invention provides a one-dimensional molybdenum phosphide nanorod and a preparation method and application thereof. The preparation method comprises the following steps: uniformly dispersing molybdenum trioxide powder and adenine in deionized water to obtain a dispersion liquid, subjecting the obtained dispersion liquid to a hydrothermal reaction, naturally cooling the dispersion liquid to room temperature after the reaction is completed, and successively conducting centrifugation, washing and drying to obtain a molybdenum trioxide-adenine strip-shaped precursor; and carrying out a phosphating reaction on the obtained molybdenum trioxide-adenine strip-shaped precursor and sodium dihydrogen hypophosphite, and carrying out natural cooling to room temperature to obtain the one-dimensional molybdenum phosphide nanorod. The molybdenum phosphide nanorod composed of uniform nitrogen-doped nanoparticles is obtained; meanwhile, the molybdenum phosphide nanorod has different crystal faces,so a large number of surface active sites are provided, and the catalytic activity of molybdenum phosphide is remarkably improved. The preparation method has the advantages of low cost, simple operation, usage of green, pollution-free and non-toxic raw materials, and safe and simple production flow, is suitable for industrial production, and has potential application value in the field of molybdenum phosphide and transition metal phosphide.
Owner:SHANDONG UNIV
NiCuSSe/NF electrode, and preparation method and application thereof
ActiveCN111809199ALarge electrochemical active areaReduce resistanceElectrode shape/formsPhotochemistryHydrogen evolution
The invention provides a NiCuSSe / NF electrode, and a preparation method and application thereof. The preparation method comprises the following steps: preparing a NiCu / NF substrate; preparing a CH4N2Ssolution and a Na2SeO3 solution; mixing the prepared CH4N2S solution with the Na2SeO3 solution to obtain a mixed load precursor solution, transferring the mixed load precursor solution into a hydrothermal reaction kettle, then putting the NiCu / NF substrate into the hydrothermal reaction kettle, sealing the hydrothermal reaction kettle, carrying out a hydrothermal reaction, taking out the reactedsubstrate after the reaction is finished, and sequentially carrying out water washing, alcohol washing and drying treatment to obtain the NiCuSSe / NF electrode. The NiCuSSe / NF electrode prepared by thepreparation method disclosed by the invention has the advantages of large electrochemical active area and low overpotential, is relatively small in resistance to charge transfer in a hydrogen evolution reaction, is relatively high in kinetic rate, and has relatively high hydrogen evolution catalytic activity. The NiCuSSe / NF electrode provided by the invention has a good application prospect in the field of electro-catalytic hydrogen evolution.
Owner:SHANGLUO UNIV
Preparation method of monatomic platinum composite electrocatalytic hydrogen evolution material
ActiveCN113430535AHigh active specific surface areaImprove hydrogen evolution catalytic activityCellsEnergy inputTube furnaceHydrogen production
The invention discloses a preparation method of a monatomic platinum composite electrocatalytic hydrogen evolution material. The method comprises the steps of: adopting Nickel chloride, cobalt chloride and single-layer graphene oxide (GO) as raw materials; using a deep eutectic solvent prepared from choline chloride / ethylene glycol as an electrolyte; adding GO into the eutectic solvent, and stirring at a constant temperature to form an electrolyte containing dispersed GO solid particles; adopting a nickel sheet as a counter electrode, adopting carbon cloth as a working electrode, and adopting a non-aqueous silver wire electrode as a reference electrode to form a standard three-electrode system for composite electrodeposition; putting the electrode material prepared by composite electrodeposition into a tubular furnace, and introducing argon for calcining; and adopting a platinum sheet as a counter electrode, adopting the treated sample as a working electrode, adopting a non-aqueous silver wire electrode as a reference electrode, adopting a deep eutectic solvent prepared from choline chloride / ethylene glycol as electrolyte, selecting cyclic voltammetry, and controlling different turns to load monatomic platinum. The material has excellent hydrogen evolution performance and can be applied to the field of hydrogen production through water electrolysis.
Owner:SHANGHAI UNIV
Efficient Ni-S-B hydrogen evolution electrode and preparation method and application thereof
ActiveCN109537006AReduce hydrogen evolution overpotentialImprove hydrogen evolution catalytic activityElectrodesNickel substrateOver potential
The invention discloses an efficient Ni-S-B hydrogen evolution electrode. The efficient Ni-S-B hydrogen evolution electrode comprises a nickel substrate and a Ni-S-B coating deposited on the surface of the nickel substrate, and the Ni-S-B coating is prepared from, by weight, 40%-85% of Ni, 5%-50% of S and 0.1%-10% of B. The invention further discloses a preparation method and application of the Ni-S-B hydrogen evolution electrode. According to the efficient Ni-S-B hydrogen evolution electrode, the hydrogen evolution catalytic activity of the hydrogen evolution electrode is improved, and the hydrogen evolution over-potential of the hydrogen evolution electrode is reduced.
Owner:XIAMEN UNIV OF TECH
Self-supported Ni2P/Ni@C composite cathode hydrogen evolution material and preparation method thereof
InactiveCN110820010AImprove cathode hydrogen evolution efficiencyImprove hydrogen evolution catalytic activityPhysical/chemical process catalystsElectrode shape/formsPowder metallurgyElectrochemical energy storage
The invention provides a self-supported Ni2P / Ni@C electro-catalytic hydrogen evolution cathode material with a flaky composite porous structure and a preparation method thereof. The preparation methodcomprises the following steps: 1, preparing a porous Ni@C material substrate by a powder metallurgy method; 2, performing hydrothermal in-situ growth of Ni(OH)2 precursor on the porous Ni@C substrate; and 3, adopting low-temperature gas-phase reaction technology to phosphatize Ni(OH)2 / Ni@C to obtain the self-supported Ni2P / Ni@C material. The obtained material has a rich and communicated three-dimensional porous structures, an active substance grows on the surface of the self-supported porous substrate in situ and completely does not depend on a third-party bonding auxiliary agent, the barrierof the bonding auxiliary agent on electron transfer of a current collector is avoided, and the self-supported Ni2P / Ni@C electro-catalytic hydrogen evolution cathode material is very suitable for theapplication fields of electro-catalytic reaction process, electrochemical energy storage and the like.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Ni-Cu-Ti/CNTs porous composite material and preparation method thereof
ActiveCN113174513AHigh porosityRealize the filtering functionNon-noble metal oxide coatingsEnergy inputHydrogen evolutionPorous composite
The invention discloses a Ni-Cu-Ti / CNTs porous composite material and a preparation method thereof. The porous composite material is prepared by uniformly mixing Ni, Cu and Ti powder with dispersed CNTs, performing ball milling and performing cold pressing to obtain a blank and sintering the blank. The porous composite material is rich in porosity and uniform to distribute, simple and environmental-friendly in preparation process, has excellent catalytic activity of hydrogen evolution and mechanical property and can be used in hydrogen evolution reaction and industrial filtration in an alkaline environment.
Owner:XIANGTAN UNIV
A dual-functional electrolytic water electrode with superwetting property and its preparation method
ActiveCN111155145BHigh mechanical strengthChange surface wettabilityFuel and primary cellsHybrid capacitor electrodesHydration reactionCobalt acetate
Owner:ZHEJIANG FORESTRY UNIVERSITY
A kind of ni-cu-ti/cnts porous composite material and preparation method thereof
ActiveCN113174513BHigh porosityRealize the filtering functionNon-noble metal oxide coatingsEnergy inputHydrogen desorptionHydrogen evolution
The invention discloses a Ni-Cu-Ti / CNTs porous composite material and a preparation method thereof. In the present invention, Ni, Cu, Ti element powders and dispersed CNTs are mixed uniformly, then ball-milled, cold-pressed to form green bodies, and then sintered to prepare porous composite materials. The porous composite material has abundant pores and uniform distribution, a simple and environmentally friendly preparation process, excellent hydrogen evolution catalytic activity and mechanical properties, and can be used for electrolytic hydrogen desorption and industrial filtration in an alkaline environment.
Owner:XIANGTAN UNIV
A kind of cuprous ion cluster compound hydrogen evolution electrode and its preparation method and application
InactiveCN105463503BImprove hydrogen evolution catalytic activityImprove stabilityElectrodesCuprous ionHydrogen evolution
The invention discloses a cuprous ion cluster compound hydrogen evolution electrode. Raw materials of the electrode comprise a cuprous ion cluster compound, a carbon elementary substance and paraffin. The mass ratio of the cuprous ion cluster compound to the carbon elementary substance is 1:1-5. The ratio of the total mass of the cuprous ion cluster compound and the carbon elementary substance to the mass of the paraffin is 1-5:1. The invention discloses a preparation method of the cuprous ion cluster compound hydrogen evolution electrode. The invention discloses application of the cuprous ion cluster compound hydrogen evolution electrode. Compared with the prior art, the cuprous ion cluster compound is introduced in the paraffin carbon paste carbon, and the electrode has higher hydrogen evolution catalytic activity. The hydrogen evolution electrode is easy to manufacture, good in stability, convenient to operate and low in cost.
Owner:HEFEI UNIV OF TECH
Mos in a kind of microbial electrolytic cell 2 Preparation method and application of transition metal/graphene composite hydrogen evolution electrode
InactiveCN108191075BEasy to makeImprove hydrogen evolution catalytic activityWater treatment parameter controlWaste water treatment from animal processingPtru catalystMaterials science
The invention discloses a preparation method and application of an MoS2 / transition metal / graphene composite hydrogen dissociation electrode in a microbial electrolytic tank. The preparation method comprises the following steps: (1) dissolving graphene oxide with deionized water, performing ultrasonic peeling to obtain a graphene oxide solution, then, adding ammonium tetrathiomolybdate, a salt compound of transition metal and a reducing agent in sequence, and dispersing uniformly to obtain a mixed solution; (2) transferring the mixed solution into a reaction kettle, preserving heat for 10 to 12hours at 170 to 200 DEG C, and centrifuging, washing and drying a product to obtain the MoS2 / transition metal / graphene composite hydrogen dissociation catalyst; (3) uniformly loading an electrode material with the MoS2 / transition metal / graphene composite hydrogen dissociation catalyst to obtain the hydrogen dissociation electrode. According to the preparation method and the application of the MoS2 / transition metal / graphene composite hydrogen dissociation electrode in the microbial electrolytic tank, a reaction system is uniform; the production cost is low; the MoS2 / transition metal / graphene composite hydrogen dissociation electrode has good electrochemical performance, has a good catalytic hydrogen production effect, and can achieve double effects of treating pollution and producing energy.
Owner:太原学院
A kind of ni-fe-mo-cu porous material and preparation method thereof
ActiveCN108315596BLarge specific surface areaImprove hydrogen evolution catalytic activityTransportation and packagingMetal-working apparatusFiltrationStearic acid
Owner:XIANGTAN UNIV
Method for preparing cnts-porous nickel/nickel oxide catalyst for hydrogen evolution reaction on steel surface
InactiveCN106591926BHigh catalytic activityImprove hydrogen evolution catalytic activityElectrolytic coatingsElectrode shape/formsElectrolysisHydrogen
A method for preparing CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst on the surface of iron and steel, the invention relates to a preparation method used as a catalyst for electrolysis hydrogen evolution reaction in alkaline solution. The invention aims to solve the problem of poor performance of non-noble metal hydrogen evolution reaction catalysts in alkaline solution at present. The method for preparing CNTs-porous nickel / nickel oxide hydrogen evolution reaction catalyst on steel surface: (1) preparation of nickel-copper alloy-CNTs composite electroplating solution; (2) preparation of copper leaching solution; (3) steel pretreatment; (4) in Prepare CNTs-nickel-copper alloy on steel surface; (5) prepare CNTs-porous nickel on steel surface; (6) prepare CNTs-porous nickel / nickel oxide on steel surface, and prepare CNTs with good hydrogen evolution reaction catalytic activity on steel surface The porous nickel / nickel oxide composite catalytic layer is beneficial to the improvement of the performance of the non-precious metal catalyst for the electrolysis hydrogen reaction.
Owner:UNIV OF JINAN
A kind of ni-cr-al-cu porous material and preparation method thereof
ActiveCN108380882BLarge specific surface areaImprove hydrogen evolution catalytic activityElectrode shape/formsAl powderManufacturing technology
Owner:XIANGTAN UNIV
An efficient ni-s-b hydrogen evolution electrode and its preparation method and application
ActiveCN109537006BReduce hydrogen evolution overpotentialImprove hydrogen evolution catalytic activityElectrodesNickel substrateChloride
The invention discloses a high-efficiency Ni-S-B hydrogen evolution electrode, comprising a nickel base and a Ni-S-B coating deposited on the surface of the nickel base, and the Ni-S-B coating includes the following weight percentages: Components: Ni: 40-85%, S: 5-50%, B: 0.1-10%. The invention also discloses its preparation method and application. The invention improves the hydrogen evolution catalytic activity of the hydrogen evolution electrode and reduces the hydrogen evolution overpotential of the hydrogen evolution electrode.
Owner:XIAMEN UNIV OF TECH
A kind of ni-s-w-c hydrogen evolution electrode and preparation method thereof
ActiveCN106702419BReduce hydrogen evolution overpotentialImprove hydrogen evolution catalytic activityElectrodesHydrogenHydrogen evolution
The invention provides a Ni-S-W-C hydrogen evolution electrode comprising a nickel base body and a Ni-S-W-C coating layer deposited on the surface of the nickel base body. The Ni-S-W-C coating layer comprises, by weight, 50%-80% of Ni, 5%-20% of S, 0.1%-1.5% of W and the balance C. The W and C elements are added to a Ni-S coating layer to form the Ni-S-W-C coating layer. The Ni-S-W-C coating layer has low hydrogen evolution over potentiality, high hydrogen evolution catalytic activity and excellent stability and can be widely used as an alkaline water electrolysis hydrogen evolution electrode material. According to the embodiment, the Ni-S-W-C hydrogen evolution electrode provided by the invention has the hydrogen evolution over potentiality being 270mV, the apparent current density being 5.27x10<2> mA / cm<2>, and has higher hydrogen evolution catalytic activity.
Owner:湖南七维氢能科技有限公司
A kind of one-dimensional molybdenum phosphide nanorod and its preparation method and application
ActiveCN111013617BImprove hydrogen evolution catalytic activityIncrease surface active sitesPhysical/chemical process catalystsElectrodesNanoparticleActive site
The invention provides a one-dimensional molybdenum phosphide nanorod and its preparation method and application. The preparation method comprises the following steps: uniformly dispersing molybdenum trioxide powder and adenine in deionized water to obtain a dispersion liquid, and carrying out the obtained dispersion liquid Hydrothermal reaction, after the reaction is completed, naturally cool to room temperature, centrifuge, wash, and dry to obtain a molybdenum trioxide-adenine ribbon precursor; combine the gained molybdenum trioxide-adenine ribbon precursor with sodium dihydrogen hypophosphite Perform phosphating reaction, cool to room temperature naturally, and obtain one-dimensional molybdenum phosphide nanorods. The invention obtains molybdenum phosphide nanorods composed of uniform nitrogen-doped nanoparticles, and has different crystal planes to provide a large number of surface active sites, thereby significantly improving the catalytic activity of the molybdenum phosphide. The preparation method of the invention is low in cost, easy to operate, green and non-polluting and non-toxic in raw materials, safe and simple in production process, suitable for industrial production, and has potential application value in the field of molybdenum phosphide and transition metal phosphide.
Owner:SHANDONG UNIV
Coated electrode for catalytic hydrogen evolution, and preparation method thereof
InactiveCN111041520AImprove work efficiencyImprove bindingVacuum evaporation coatingSputtering coatingAdhesiveCoated electrodes
A coated electrode for catalytic hydrogen evolution comprises a Ti substrate and a (W,Fe) C-P coating arranged on the surface of the Ti substrate. The (W,Fe)C-P coating with catalytic activity is directly prepared on the Ti substrate electrode. Compared with a traditional coated electrode prepared by adopting an adhesive, the coated electrode of the invention is better in binding force and betterin stability, and has prolonged service life; and low-price (W,Fe)C alloy has high hydrogen evolution catalytic activity, and introduction of the P element into (W,Fe) C further improves the catalyticactivity of catalytic hydrogen evolution, increases the working efficiency of catalytic hydrogen evolution and reduce the cost for preparing the coating electrode for catalytic hydrogen evolution.
Owner:宁波涂冠镀膜科技有限公司
n-doped porous carbon-coated mop nanorod material and its preparation method and application
ActiveCN112007673BHigh catalytic activityEasy to operateCatalyst activation/preparationCarbon preparation/purificationPorous carbonActive agent
The invention discloses an N-doped porous carbon-coated MoP nanorod material, a preparation method and application thereof. The preparation method of the N-doped porous carbon coated MoP nanorod material includes: 1) MoO 3 The nanorods, surfactant, zinc source, and dimethylimidazole are contacted in a solvent to obtain a precursor powder; 2) the precursor powder is calcined and carbonized under a protective gas, and then the calcined and carbonized product is subjected to phosphating treatment to MoP nanorods coated with N-doped porous carbon were obtained. The N-doped porous carbon-coated MoP nanorod material has excellent catalytic activity, which enables it to be applied in HER electrocatalysis, and the preparation method has the advantages of simple operation, uniform and controllable morphology.
Owner:ANHUI NORMAL UNIV
Preparation method, catalyst and preparation method of molybdenum disulfide/carbon composite material
InactiveCN108212178BImprove hydrogen evolution catalytic activityImprove conductivityPhysical/chemical process catalystsElectrodesCarbon compositesPtru catalyst
The invention provides a preparation method for molybdenum disulfide / graphitized carbon composite material, a catalyst and a preparation method thereof. The preparation method for molybdenum disulfide / graphitized carbon composite material comprises the following steps: performing a hydrothermal synthesis reaction on a sulfur-containing reducing agent, molybdate and ascorbic acid; sintering a product of the hydrothermal synthesis reaction to obtain the molybdenum disulfide / graphitized carbon composite material. The catalyst is prepared from the molybdenum disulfide / graphitized carbon compositematerial, the molybdenum disulfide / graphitized carbon composite material is prepared from molybdenum disulfide being of a layer structure and graphitized carbon inserted into adjacent layers of the layer structure. According to the preparation method for the catalyst applied to electrochemical hydrogen evolution, the prepared molybdenum disulfide / carbon composite material, is taken as the catalyst. The preparation method has the advantages of readily-available raw material, simple synthesis process, capability of preparing the molybdenum disulfide / carbon composite material which has high conductivity and catalytic property.
Owner:ZHENGZHOU UNIV
Preparation method of nitrogen-doped graphitized modified electrode
PendingCN114592208AHigh specific surface areaHigh catalytic activityElectrodesSurface cleaningSolvothermal reaction
The invention discloses a preparation method of a nitrogen-doped graphitized modified electrode, which comprises the following steps: carrying out surface cleaning treatment on a metal nickel substrate to obtain a clean metal nickel substrate; performing corrosion treatment based on solvothermal reaction on the metal nickel substrate subjected to surface cleaning treatment in a mixed solution containing molybdate and fluoride; carrying out gas-solid reaction on the metal nickel substrate subjected to corrosion treatment under the protection of inert atmosphere, and carrying out nitrogen-doped graphitization modification on substances on the surface layer of the substrate to obtain the nitrogen-doped graphitization modified electrode, compared with a traditional nickel-based electrode preparation method, based on the hydrothermal reaction, the molybdenum element is introduced to the nickel substrate, a nanorod-shaped surface structure containing bimetal is formed, and the specific surface area of the material is increased.
Owner:NANTONG UNIVERSITY
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