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1857 results about "Mesoporous carbon" patented technology
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Mesoporous carbon has porosity within the mesopore range and this significantly increases the specific surface area. Another very common mesoporous material is Activated Carbon which is typically composed of a carbon framework with both mesoporosity and microporosity depending on the conditions under which it was synthesized.
Surface-functionalized mesoporous carbon materials
ActiveUS9249241B2Effectively and efficiently functionalizedPractical and cost-effective for large scale productionProcess efficiency improvementPolyvinyl polymerSolvent
A functionalized mesoporous carbon composition comprising a mesoporous carbon scaffold having mesopores in which polyvinyl polymer grafts are covalently attached, wherein said mesopores have a size of at least 2 nm and up to 50 nm. Also described is a method for producing the functionalized mesoporous composition, wherein a reaction medium comprising a precursor mesoporous carbon, vinyl monomer, initiator, and solvent is subjected to sonication of sufficient power to result in grafting and polymerization of the vinyl monomer into mesopores of the precursor mesoporous carbon. Also described are methods for using the functionalized mesoporous carbon, particularly in extracting metal ions from metal-containing solutions.
Owner:UT BATTELLE LLC
Mesoporous carbon materials comprising bifunctional catalysts
InactiveUS20110223494A1Facilitate metal-air reactionHigh specific energyFuel and primary cellsFuel and secondary cellsLithium–air batteryElectrical devices
The present application is directed to mesoporous carbon materials comprising bi-functional catalysts. The mesoporous carbon materials find utility in any number of electrical devices, for example, in lithium-air batteries. Methods for making the disclosed carbon materials, and devices comprising the same, are also disclosed.
Owner:BASF AG
Thin film electrochemical energy storage device with three-dimensional anodic structure
InactiveUS20100216026A1Final product manufactureElectrode carriers/collectorsPorosityMicro structure
A method for forming a battery from via thin-film deposition processes is disclosed. A mesoporous carbon material is deposited onto a surface of a conductive substrate that has high surface area, conductive micro-structures formed thereon. A porous, dielectric separator layer is then deposited on the layer of mesoporous carbon material to form a half cell of an energy storage device. The mesoporous carbon material is made up of CVD-deposited carbon fullerene “onions” and carbon nano-tubes, and has a high porosity capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. Embodiments of the invention further provide for the formation of an electrode having a high surface area conductive region that is useful in a battery structure. In one configuration the electrode has a high surface area conductive region comprising a porous dendritic structure that can be formed by electroplating, physical vapor deposition, chemical vapor deposition, thermal spraying, and / or electroless plating techniques.
Owner:APPLIED MATERIALS INC
Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles
InactiveUS20050279696A1Reduce bacteriaReduce virusMembrane filtersLoose filtering material filtersWater filterActivated carbon filtration
A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.
Owner:PUR WATER PURIFICATION PRODUCTS INC +2
Preparation method of metal mono-atoms
ActiveCN106914237AImprove performanceLow costMolecular sieve catalystsMetal/metal-oxides/metal-hydroxide catalystsCarbon filmFiltration
The invention relates to a preparation method of metal mono-atoms and belongs to the technical field of materials science and engineering. The metal mono-atoms prepared through the method may include: Pt, Ag, Au, Pd, Rh, Ir, Ru, Co, Ni and Cu, and metal mono-atoms supported on TiO2, zinc oxide, cerium oxide, aluminum oxide, silicon oxide, ferric oxide, manganese oxide, C3N4, mesoporous carbon, ultrathin carbon films, graphene, carbon nano tubes or molecular sieve materials, etc. The method includes the steps of: preparing a precursor solution in a certain concentration, and freezing the solution; and under an ice phase, processing ice cubes by means of external field or reaction between reactants in the ice cubes, and when the ice cubes are molten, a mono-atom solution is finally produced; mixing the mono-atom solution with different materials, performing ultrasonic treatment, filtration, cleaning and drying to finally obtain the mono-atoms supported on various materials. The preparation method is quick, has high product density, allows mass production, is high in efficiency and has wide application range, and compared with a co-precipitation method and an impregnation method, the method has significant advantages.
Owner:TSINGHUA UNIV
Hollow mesoporous carbon electrode-catalyst for direct methanol fuel cell and preparation thereof
ActiveUS20060166811A1Large average pore sizeDischarge is generatedCell electrodesInksMolecular sieveFuel cells
The present invention discloses a novel electrode-catalyst for direct methanol fuel cell prepared by introducing a carbon precursor into pores of a wormhole-like molecular sieve template, carbonizing the carbon precursor, removing the molecular sieve template to obtain a wormhole-like mesoporous carbon having a high specific surface of 800-1000 m2 / g and a pore size of 4-5 nm, and depositing catalyst metal such as Pt—Ru on the mesoporous carbon.
Owner:IND TECH RES INST
Mesoporous carbon materials comprising bifunctional catalysts
InactiveUS8916296B2Improve responseHigh specific energyFuel and primary cellsFuel and secondary cellsLithium–air batteryMesoporous carbon
Owner:BASF SE
Method for preparing mesoporous carbon material
The present invention belongs to the field of material preparing technology. By means of sol-gel technology, organic high molecule and silicon source are led into a surfactant self-assembling reaction system so as to prepare high ordered mesoporous high molecule / silica and carbon / silica composite material and ordered mesoporous carbon material through organic-organic competition, inorganic-inorganic competition, organic-inorganic competition, cross-linking polymerization coordinate assembling and solvent volatizing self assembling. The prepared mesoporous carbon material has high order property, great specific surface area, great caliber and great porosity, as well as excellent electrochemical properties as super capacitor and cell material. It has also wide application foreground in catalysis, adsorption, biomolecule separation, and other fields.
Owner:FUDAN UNIV
A non symmetric water natrium/kalium ion battery capacitor
InactiveCN101241802ANo pollution in the processAvoid disadvantagesHybrid capacitor electrolytesHybrid capacitor electrodesCapacitanceFiber
The present invention belongs to the technique field of the battery and the capacitor, and in particular to an asymmetrical water-system sodium / potassium ion battery capacitor. The invention combines an insertion-extraction mechanism of sodium ion or potassium ion in the electrode material and the double electrode layer capacitor mechanism generated by ionic adsorption into an energy storing device. In the energy storing device, the positive electrode adopts the electrode material in which the sodium ion or potassium ion can be inserted and extracted. The negative electrode adopts the porous carbon material of high specific surface area activated carbon, carbon nano-tube, carbon fiber, mesoporous carbon or carbon aerogel and the like. The electrolyte adopts the water solution containing sodium or potassium ion compound. The battery and capacitor of the invention have the advantages of wide material source, easy preparing, low cost, good security, no environmental pollution, long cycle lifetime, higher energy density and power density. The battery and capacitor can be used as the energy source of various electric appliance, and are especially suitable as the electrokinetic cell of the electric car.
Owner:FUDAN UNIV
Controllable synthesis method of N-doped graphitized carbon ball with hollow structures
InactiveCN103183341AWith mesoporous carbon support structureLow priceMaterial nanotechnologyCarbon compoundsSynthesis methodsHydrothermal synthesis
The invention discloses a controllable synthesizing method of an N-doped graphitized carbon ball with hollow structures. The method comprises the following steps: (1) dissolving silicon source, soluble metal salt and a catalyst to the solvent according to the molar ratio, transferring the solvent to the thermal water kettle to conduct hydro-thermal synthesis after being stirred until being thoroughly dissolved, and cleaning, filtering and drying the sediment to obtain a primary commodity; (2) reducing the primary commodity at high temperature under the protection of gas in a high-temperature reaction furnace; and (3) soaking the product obtained by high-temperature reducing in acidic solution, and obtaining the graphitized carbon ball nitrogen doping with the hollow structure after cleaning, filtering and drying. The graphitized carbon ball with the hollow structures provided by the invention has the advantages that the carbon sphere has a uniform appearance, the carbon shell has millipore structures, a mesoporous carbon support structure is formed inside the carbon sphere and a better graphitize degree is provided, and can be used in the field of high-efficient catalyzing and transforming, energy storage and transforming, medicine releasing, substance adsorptive separation and the like. The non-template hydrothermal synthesis technique provided by the invention is simple and controllable, and can be used in large scale production.
Owner:CHINA UNIV OF MINING & TECH +1
Novel metal catalyst loaded by mesoporous carbon and preparation method thereof
ActiveCN102513099ANo obvious foaming phenomenonFoaming phenomenon does not decreaseCatalyst carriersOrganic compound preparationIonic liquidMonomer
The invention relates to a novel metal catalyst loaded by mesoporous carbon and a preparation method thereof. The metal catalyst is composed of 0.01-90 wt% of metal grains and 10-99.99 wt% of mesoporous carbon carrier, wherein the mesoporous carbon carrier is made of a heteroatom-doped mesoporous carbon material; the heteroatom-doped mesoporous carbon material is prepared by the following steps of: taking ionic liquid containing heteroatoms as a monomer and mixing the ionic liquid with a template agent at a room temperature; and then calcining the mixture at a temperature in a range of 400-1000 DEG C for 1-6 hours and cooling the mixture to the room temperature; and finally, removing the template agent to obtain the heteroatom-doped mesoporous carbon material. The average grain diameter of the metal grains is 1-100 nm and the mass percentage of the heteroatoms in the mesoporous carbon material is 0.01-80 wt%. The catalyst provided by the invention is good for enhancing the catalytic activity of the catalyst by adjusting the valence state of nano metal through doping the heteroatoms including nitrogen, sulfur, phosphorus, boron, fluorine and the like, and depositing and dispersing on the metal on the surface of the carrier. Furthermore, the catalyst is simple in preparation and is stable for water, air and heat.
Owner:ZHEJIANG UNIV
Lithium sulfur battery anode material and preparation method thereof
The invention relates to a lithium sulfur battery anode material and a preparation method thereof. In the anode material, nano sulfur particles are uniformly filled in hollow carbon nano-tubes of a nano mesoporous carbon material, so that sulfur is tightly contacted with carbon. The thickness of each carbon tube in the nano mesoporous carbon material is 5 to 200nm, the pore diameter is 2 to 100nm and the granularity of the sulfur nano particles is 2 to 100nm. The capacity of the prepared lithium sulfur battery anode material is more than 1,800mAh / g, and the capacity is kept over 80 percent after 500 cycles.
Owner:耿世达
Mesoporous carbon material for energy storage
A mesoporous carbon material formed on an electrode surface in an energy storage device, and a method of forming the same are disclosed. The mesoporous carbon material acts as a high surface area ion intercalation medium for the energy storage device, and is made up of CVD-deposited carbon fullerene “onions” and carbon nanotubes (CNTs) that are interconnected in a fullerene / CNT hybrid matrix. The fullerene / CNT hybrid matrix is a high porosity material that is capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. The method, according to one embodiment, includes vaporizing a high molecular weight hydrocarbon precursor and directing the vapor onto a conductive substrate to form a mesoporous carbon material thereon.
Owner:APPLIED MATERIALS INC
Ordered mesoporous carbon composite catalyst, method of manufacturing the same, and fuel cell using the same
An ordered mesoporous carbon (OMC) composite catalyst includes an OMC; and metal particles and at least one component selected from a group consisting of nitrogen and sulfur included in the OMC. The ordered mesoporous carbon composite catalyst may be formed by impregnating an ordered mesoporous silica with a mixture of at least one selected from the group consisting of a nitrogen-containing carbon precursor, and a sulfur-containing carbon precursor, a metal precursor, and a solvent; drying and heat-treating the impregnated OMS; carbonizing the dried and heat-treated OMS to obtain a carbon-OMS composite; and removing the OMS from the carbon-OMS composite. A fuel cell may contain the OMC composite catalyst.
Owner:SAMSUNG ELECTRONICS CO LTD
Method for preparing high-surface-area nitrogenous mesoporous carbon material
The invention discloses a method for preparing a high-surface-area nitrogenous mesoporous carbon material. The method prepares the nitrogenous mesoporous carbon material by using melamine, urea and formaldehyde as raw materials, using metal chloride as a template agent and an active agent, and performing the steps of dissolution, polymerization, solidification, carbonization, washing, drying and the like. The raw materials are rich in sources and have low prices; the metal chloride used as the template agent and the active agent has a low price and can be recycled; the whole preparation method is simple and feasible; and the prepared nitrogenous mesoporous carbon material has a specific area of 500 to 1,500 m<2> / g, a total pore volume of 1.0 to 3.0 cm<3> / g, a mesoporous ratio of 80 to 92 percent, an adjustable pore diameter of between 2.5 nm to a plurality of microns and the nitrogen content (atomic percent) of 5 to 28 percent at, and is expected to be widely applied in the fields of adsorbents, catalyst carriers, electrode materials and the like.
Owner:NANJING UNIV
Method for preparing ordered mesoporous carbon material by direct self-assembly
The invention belongs to the technical field of material preparation, and particularly relates to a cheap method for preparing ordered mesoporous carbon by direct self-assembly. The method comprises the following steps of: directly dissolving a surfactant template agent into macromolecules to form a mixture, pouring the mixture into a die, and directly baking and curing the mixture at a certain temperature; and performing low-temperature hot polymerization and high-temperature carbonization on the cured sample to obtain the ordered mesoporous carbon material. The method has the advantages of easily-obtained raw materials, low cost, suitability for amplifying the synthesis process and the like and is environmentally friendly, and simple and convenient for operation.
Owner:FUDAN UNIV +1
Ordered mesoporous carbon/tungsten carbide composite material and supported catalyst thereof and preparation method thereof
InactiveCN101869853AHigh degree of aperture orderNarrow pore size distributionCatalyst carriersCell electrodesSolventPt element
The invention discloses a preparation method for an ordered mesoporous carbon / tungsten carbide composite material and a supported catalyst thereof. In the method, an organic matter and a tungsten salt are separately used as a carbon source and a tungsten source, and the carbon source and the tungsten source are mixed with a surfactant; and a precursor of the ordered mesoporous carbon / tungsten carbide is synthesized by a solvent-evaporation induced self-assembly method, and then the precursor is subject to high-temperature treatment in the inert atmosphere to form the ordered mesoporous carbon / tungsten carbide composite material. The ordered mesoporous carbon / tungsten carbide composite material prepared by the method has the characteristics of high degree of order, narrow aperture distribution, large specific surface area (greater than 500 m<2> / g) and the like. The invention further comprises a supported catalyst prepared by supporting active components on the ordered mesoporous carbon / tungsten carbide composite material which is prepared by the method; and because of the synergistic effect and the structure effect of the ordered mesoporous carbon / tungsten carbide composite material, the catalyst has higher methanol electro-oxidation catalytic activity than a commercial carbon platinum-ruthenium catalyst.
Owner:SUN YAT SEN UNIV
Mesoporous carbons
InactiveUS20090258782A1Antibacterial agentsOther chemical processesChemical physicsMesoporous carbon
Provided are products, systems, and methods relating to the removal of particles from fluid samples using mesoporous carbon materials.
Owner:UNIVERSITY OF BRIGHTON +1
Preparation method of positive material for lithium-sulfur battery
ActiveCN102832379AGood dispersionUniform particle sizeCell electrodesCarbon compositesCarbon nanotube
Owner:SHANGHAI INST OF SPACE POWER SOURCES
Ordered mesoporous carbon-sulphur nano composite positive pole material and preparation method thereof
InactiveCN101567437AIncrease contact areaIncrease transfer rateElectrode manufacturing processesElectrode carriers/collectorsLithiumSulfur
The invention provides ordered mesoporous carbon-sulphur nano composite positive pole material and preparation method thereof, which relates to nano composite material, especially ordered mesoporous carbon-sulphur composite positive pole suitable for lithium-sulphur secondary battery and preparation method thereof. The invention provides an ordered mesoporous carbon-sulphur nano composite positive pole material with excellent electrochemical activity and preparation method thereof. The material comprises ordered mesoporous carbon and sublimed sulfur, wherein, the content of component sulphur is 20-80 mass percent of ordered mesoporous carbon-sulphur nano composite positive pole material. The method provided by the invention includes the steps: synthesizing ordered mesoporous carbon; mixing prepared ordered mesoporous carbon and sublimed sulfur according to stoichiometric ratio, putting them into an air-tight container, heating for melting and compounding sulphur, and acquiring ordered mesoporous carbon-sulphur nano compound positive pole material.
Owner:XIAMEN UNIV +1
Spherical mesoporous carbon nitride material and preparation method thereof
ActiveCN103011099ANo pollutionEasy to makeNanotechnologyNitrogen and non-metal compoundsHydrofluoric acidShielding gas
The invention provides a spherical mesoporous C3N4 material with a hollow cavity nanostructure and a preparation method thereof. The preparation method comprises the following steps: modifying a nano solid SiO2 spherule to get a solid SiO2 material coated with mesoporous SiO2 on the outer layer, further adding alkali, selectively etching off the inner-layer solid SiO2 to get nano hollow mesoporous SiO2, fully impregnating the nano hollow mesoporous SiO2 in a water solution of a nitrogen-containing precursor, performing centrifugal drying, performing high-temperature roasting in protective gas, and then using hydrofluoric acid to dissolve the SiO2 to get the spherical hollow mesoporous nano C3N4. The prepared product has the specific surface area of 300-800m<2> / g and a cavity capable of loading other materials, is easy to perform mass transfer and can be further widely applied.
Owner:泰州市海通资产管理有限公司
Water filter materials comprising a mixture of microporous and mesoporous carbon particles and water filters with said filter materials
ActiveCN101160169AReduce virusReduce TTHMOther chemical processesFiltration separationActivated carbon filtrationWater filter
A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.
Owner:PUR WATER PURIFICATION PRODUCTS INC +1
Ordered nano mesoporous carbon material of two-way connection and 3-D cubic structure and its preparing method
Macroporous ordered nano mescoporous carbon material with spatial symmetry of Ia3d is prepared through the process of: mixing carbon source and solvent homogeneously with SiO2 mesoporous material with 3D connection and double continuous pore canal as template agent; heat treatment to evaporate solvent; high temperature roasting under protective nitrogen to carbonate carbon source completely; eliminating SiO2 template agent, filtering, washing and drying. The material has two-way connecting and 3D ordered pore and canal structure, large pore diameter, great specific surface area and great pore volume, and is powder, sheet or film.
Owner:FUDAN UNIV
Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles
InactiveUS20050263453A1Reduce bacteriaReduce virusSolvent extractionLoose filtering material filtersWater filterActivated carbon filtration
A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.
Owner:PUR WATER PURIFICATION PRODUCTS INC +1
Preparation method of benzaldehydes compound and novel double-metal catalyst loaded by mesoporous carbon for preparation method
ActiveCN102513104AHigh catalytic activityGood synergyCatalyst carriersOrganic compound preparationBenzeneBenzaldehyde
The invention relates to a preparation method of a benzaldehydes compound and a catalyst for the preparation method. The catalyst is composed of 0.01-90 wt% of metal grains and 10-99.99 wt% of mesoporous carbon carrier; the metal grains are selected from any two of Pd, Au, Ag, Pt, Ru, Rh, Ni, Cu, Fe, Co, Cr, W, Mo, Ti and Ta; the weight ratio of two types of the metal is 1: (0.01-100) and the average grain diameter of the metal grains is 1-100 nm; and the mesoporous carbon carrier is prepared from a heteroatom-doped mesoporous carbon material. The content of heteroatoms in the mesoporous carbon material is 0.01-80 wt%. The catalyst provided by the invention is stable for water, air and heat and has an excellent catalytic activity; particularly, the catalyst has a high selectivity when being used for catalyzing an alcohol oxidation reaction to prepare aldehyde or ketone. The preparation method of the benzaldehydes compound provided by the invention has the advantages of high conversion rate of raw materials and good selectivity of a target product.
Owner:ZHEJIANG UNIV
Mesoporous carbon material, fabrication method thereof and supercapacitor
ActiveUS20110134585A1Improve conductivityNon-metal conductorsMaterial nanotechnologyCarbon nanotubeSupercapacitor
A mesoporous carbon material, a fabrication method thereof and a supercapacitor containing the mesoporous carbon material are provided. The mesoporous carbon material includes a plurality of carbon nanotubes (CNTs) and / or metal particles and / or metal oxide particles, and a carbon matrix. The mesoporous carbon material has a plurality of mesopores formed by the carbon matrix and the carbon nanotubes and / or the metal particles and / or the metal oxide particles. The plurality of carbon nanotubes, and / or the metal particles and / or the metal oxide particles are formed substantially adjacent to the plurality of mesopores.
Owner:DELTA ELECTRONICS INC
Rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material and preparation method and application thereof
InactiveCN104201001AImprove performanceImprove thermal stabilityHybrid capacitor electrodesHybrid/EDL manufactureMesoporous silicaSilicon oxide
The invention discloses a rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material and a preparation method and application thereof. The rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material is of a mesoporous structure and comprises the following components based on atomic percent: 23.70 to 33.85% of nitrogen content, 0.51 to 0.72% of phosphorus content, and the balance of carbon; the aperture is distributed from 1.74 to 1.95nm; the specific surface area is about 585 to 1,173m<2> / g; the pore volume is 0.49 to 1.07cm<3> / g. The preparation method comprises the following steps: mixing and agitating rod-shaped mesoporous silica, an organic high-molecular polymer, a nitrogen-containing precursor, a phosphorus-containing precursor and alcohol, in order to enable the carbon source, a nitrogen source and a phosphorus source to be fully dipped into a pore channel of mesoporous silica; drying until alcohol is completely volatilized to obtain a nitrogen source / phosphorus source / carbon phosphorus / silica composition; sequentially processing by high-temperature carbonizing, silica removing and drying to obtain the rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material. The rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material is applied to manufacturing of an electrode material for a super capacitor.
Owner:SHANGHAI INSTITUTE OF TECHNOLOGY
Hydrogenation catalyst and preparation method of 1,4-cyclohexanedimethanol
InactiveCN101982236ALow costEasy to prepareOrganic compound preparationHydroxy compound preparationCyclohexanedimethanolActive component
The invention discloses a hydrogenation catalyst and a preparation method of 1,4-cyclohexanedimethanol. The hydrogenation catalyst comprises a carrier and active components, wherein the carrier is mesoporous carbon, the active components are Ru and Sn, and the load capacity of the active components saccounts for 5%-15% of the hydrogenation catalyst in mass. The preparation method of the 1,4-cyclohexanedimethanol adopts the catalyst of the invention, and under the condition of a solvent and hydrogenation, the target product is produced with high selectivity. The catalyst and the method of the invention keep higher conversion rate and yield in reaction, simultaneously can maintain long service life of the catalyst, use the cheap mesoporous carbon as the carrier to reduce the cost of the catalyst, improve the reutilization rate of noble metal, and reduce consumption of the catalyst.
Owner:CHANGZHOU UNIV +1
Mesoporous carbon and method of producing the same
InactiveUS20060263288A1Low plane resistanceImprove conductivityCarbon compoundsFinal product manufactureMesoporous silicaConductive materials
Provided are a mesoporous carbon and a method of preparing the same, where the mesoporous carbon is prepared using phenanthrene as a carbon source and a mesoporous silica as a template. The mesoporous carbon has a significantly low plane resistance, which can be obtained without sacrificing other physical properties, and thus obtains a high conductivity and effectively transfers electrical energy. Accordingly, a fuel cell electrode or a fuel cell which is produced using the mesoporous carbon as a conductive material has high efficiency. Furthermore, the mesoporous carbon may be used in various electrochemical devices as a conductive material.
Owner:SAMSUNG SDI CO LTD
Carbon-sulphur composite used for cathode material of lithium sulphur battery as well as preparation method and application thereof
ActiveCN103050669AImprove discharge capacityLarger than surfaceNon-aqueous electrolyte accumulator electrodesLithium–sulfur batterySulfur electrode
The invention relates to a carbon-sulphur composite used for a cathode material of a lithium sulphur battery as well as a preparation method and application thereof. The carbon-sulphur composite comprises a carbon material and elemental sulphur, wherein the carbon material is formed by doping mesoporous carbon with the aperture of 2-5nm and electroconductive carbon with the aperture of 30-70nm, and the electroconductive carbon with the aperture of 30-70nm contains micropores with the aperture of 0.5-1.7nm; and the elemental sulphur accounts for 10-90wt% of the total quantity of the composite. Abundant micropores guarantee that the carbon material has larger specific surface, adsorption capacity to polysulphide is stronger, and dissolution of the polysulphide can be effectively limited, so that stability of a sulphur electrode is improved. Meso pores in porous distribution can load more sulphur active substances, electrochemical capacity of a composite material is improved, and diffusion and transmission of lithium ions and electrolyte solution can be facilitated, so that reduction polarization of the elemental sulphur is reduced and discharge plateau of the elemental sulphur is improved.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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