310 results about "Mesoporous carbon" patented technology

The invention provides a sodium ion battery, an energy storage device and an energy storage system. The sodium ion battery comprises a positive pole piece, a diaphragm, a negative pole piece and an electrolyte, the negative pole piece comprises a carbon material, the specific surface area of the carbon material is x, the carbon material comprises mesopores, the number percentage of the mesopores in the carbon material is y, and the electrolyte comprises an organic solvent, an electrolyte salt, an organic additive and a sodium salt additive, the organic solvent comprises cyclic carbonate and chain carbonate, the mass fraction of the cyclic carbonate in the electrolyte is a, the mass fraction of the chain carbonate in the electrolyte is b, the mass fraction of the organic additive in the electrolyte is c, and the mass fraction of the sodium salt additive in the electrolyte is d; the sodium ion battery meets the relational expression of 0.4 < = a / y < = 0.8; 0.5 < = a / b < = 1.3; 0.4 < = c / x < = 1.2; and 0.1 < = d / c < = 0.5.

The invention relates to the technical field of mesoporous carbon material preparation, in particular to a high-temperature mesoporous carbon preparation method which comprises the following steps: S1, mixing a metal halide and an inorganic hydrogen bond donor, and heating and stirring until a solution is clear to obtain an inorganic eutectic solvent; s2, mixing the inorganic eutectic solvent and a biomass raw material for reaction; s3, filtering and washing the material obtained in the step S2; and S4, carbonizing the material obtained in the step S3 in a high-temperature inert atmosphere to obtain the high-temperature mesoporous carbon. According to the method, the wood fiber biomass such as the lowest-value straw, the lowest-value bamboo and the lowest-value wood dust is directly used as raw materials, component separation does not need to be conducted on the wood fiber biomass, and high-value utilization of a large amount of low-value wood fiber biomass can be achieved. The method is relatively simple in process, relatively mild in condition and relatively high in product yield, and an activating agent does not need to be used. The biomass mesoporous carbon prepared by the method also has a high specific surface area in a huge mesoporous volume state, and the specific capacitance in an alkaline electrolyte exceeds 260F / g.

The invention relates to the technical field of preparation of nano catalytic materials, in particular to a preparation method of hierarchical pore channel mesoporous carbon loaded metal nanoparticles. According to the invention, biomass diatomite is used as a template to construct a vertically through macroporous channel, a block copolymer is introduced to form an ordered mesoporous structure, and a pore-foaming agent is added to generate a macro-pore network in a pyrolysis process, so that a macro-pore-mesoporous-micropore three-level communicated carbon-based skeleton is realized; and a bimetallic component is loaded on the hierarchical porous mesoporous carbon in a gradient confinement manner. The material disclosed by the invention has the advantages of fast mass transfer of macropores, stable nanoparticles of mesoporous confinement and efficient catalysis of monatomic sites, and can efficiently catalyze and degrade various wastewater organic pollutants in a wide pH range.

The invention discloses a preparation method and application of a high-nitrogen-doped ordered mesoporous carbon supported copper catalyst, and belongs to the technical field of catalyst preparation. The preparation method comprises the following steps: by taking cane sugar and a copper-nitrogen complex as raw materials, SBA-15 as a template agent and sulfuric acid as a catalyst, carrying out equivalent-volume impregnation, low-temperature heat treatment, 800-900 DEG C high-temperature carbonization and nitric acid / hydrofluoric acid demolding to prepare pyrrole nitrogen enriched or pyridine nitrogen enriched high-nitrogen doped ordered mesoporous carbon with a large specific surface area; the preparation method comprises the following steps: loading a copper species on high-nitrogen-doped ordered mesoporous carbon by adopting an equivalent-volume impregnation method, and reducing at 350-400 DEG C to prepare the high-nitrogen-doped ordered mesoporous carbon loaded copper catalyst. The prepared catalyst is high in nitrogen content, large in specific surface area, high in pyridine nitrogen or pyrrole nitrogen enrichment degree and uniform in copper particle dispersion and shows efficient catalytic performance in methanol oxidative carbonylation reaction, and the highest methanol conversion rate is 9.3%.

The invention belongs to the technical field of CO2 adsorbents, relates to carbon-based solid amine, and discloses a preparation method of a carbon-based solid amine CO2 trapping adsorbent, which comprises the following steps: S1, dissolving organic amine in a methanol solution to form a methanol amine solution; s2, adding the mesoporous carbon-based carrier into the methanol amine solution, and stirring at a low speed to evaporate methanol; and S3, drying in a vacuum oven to obtain the carbon-based solid amine CO2 trapping adsorbent. The CO2 trapping adsorbent prepared by the invention has the advantages of large CO2 adsorption capacity, strong selectivity, good stability and reproducibility, effectively reduces the CO2 trapping cost, and has huge advantages in the aspect of carbon trapping.

The invention provides a mesoporous silicon carbon negative electrode material and a preparation method and application thereof, and relates to the technical field of battery negative electrode materials, the mesoporous silicon carbon negative electrode material comprises a mesoporous carbon matrix and silicon; the mesoporous carbon matrix can be a spherical, spheroidic or irregular block, the mesoporous carbon matrix has mesoporous structures, and preferably, the mesoporous structures are in ordered distribution; according to the invention, the preparation of the uniform mesoporous structure is realized, the volume expansion of the silicon is effectively relieved, the close combination of the silicon and the carbon is realized by vapor deposition of the silicon on the mesoporous sphere carbon matrix material, and the cycling stability of the material is improved. According to the meso-porous silicon carbon negative electrode material provided by the invention, by optimizing the structural design of the material, the problems of silicon volume expansion, infirm interface bonding, complex preparation process and the like in the prior art are solved.

The invention discloses a preparation method and application of a carbon dioxide hydrogenation catalyst, and belongs to the field of hydrogenation catalysis. The vanadium slag is used as a raw material, a leaching solution containing silicon, chromium and vanadium is obtained through sodium salt roasting, an aluminum source is added to remove the silicon element, meanwhile, an ordered mesoporous carbon material is added, and silicon and aluminum elements are converted into an ordered mesoporous composite oxide which is used as a hydrogenation catalyst carrier; an indium salt, a cerium salt and a nickel salt are dissolved in ethanol and mixed with the carrier for isopyknic impregnation to obtain the hydrogenation catalyst; and carrying out chromium and vanadium separation on the silicon-removed leaching solution to obtain chromium sesquioxide and the all-vanadium redox flow battery electrolyte. The catalyst has a regular pore structure, ordered mesopores provide a confinement effect, dispersion and anchoring of active components are facilitated, and the activity of the catalyst is remarkably improved.

A method of mesoporous carbon support production includes providing an active silica template from a self-assembling block copolymer (BCP) in a solution, the BCP including a diblock copolymer of polydimethylsiloxane (PDMS) as a majority block and a hydrocarbon polymer as a minority block in a predetermined volume fraction, the BCP being in a form of nanodroplets, drying and annealing the nanodroplets, ashing away the hydrocarbon polymer of the minority block to obtain the active silica template, applying a carbon precursor onto the active silica template, and removing the active silica template to obtain a mesoporous carbon support as a reverse image of the template.

The invention provides a heterostructure salinity difference energy conversion film based on HOF / two-dimensional mesoporous carbon as well as a preparation method and application of the heterostructure salinity difference energy conversion film. The salinity difference energy conversion film comprises a two-dimensional mesoporous carbon layer serving as a hydrophobic layer and a hydrogen bond organic framework layer which covers one surface of the hydrophobic layer and serves as a hydrophilic layer, wherein the two-dimensional mesoporous carbon layer is formed by compounding a two-dimensional mesoporous carbon material with regular nanopores and aramid nanofibers; the hydrogen bond organic framework layer is formed by compounding a hydrogen bond organic framework material and aramid nanofibers; the heterogeneous Janus structure salinity gradient energy conversion membrane is constructed by adopting a hydrogen bond organic framework and a two-dimensional mesoporous carbon material, and when the heterogeneous Janus structure salinity gradient energy conversion membrane is applied to salinity gradient energy conversion, high ion selectivity, high structural stability and high ion migration flux can be considered.

The present application relates to the technical field of nano-catalytic material preparation, in particular to a preparation method of multi-stage pore mesoporous carbon loaded metal nanoparticles, which constructs vertical and through macroporous channels by taking biomass diatomite as a template, forms ordered mesoporous structure by introducing block copolymer, and realizes macro-pore-mesopore-micropore three-stage communication of carbon-based skeleton by adding porogen to produce macro-porous network in the pyrolysis process, and gradientally limits and loads bimetallic components on the multi-stage pore mesoporous carbon. The material has the advantages of macroporous rapid mass transfer, mesoporous limited stable nanoparticles and single-atom site efficient catalysis, and can efficiently catalyze and degrade various wastewater organic pollutants in a wide pH range.

The invention discloses a nitrogen-doped multilayer rose-shaped hard carbon material as well as a preparation method and application thereof, and belongs to the technical field of battery materials. A precursor of the nitrogen-doped multi-layer rose-shaped hard carbon material is prepared by adopting a solid-liquid self-assembly method, and then the precursor is calcined, so that the final nitrogen-doped multi-layer rose-shaped hard carbon material can be obtained. The prepared nitrogen-doped porous carbon material has more mesopores and defects, is unique in structure and uniform in shape, and can be used as a sodium ion battery negative electrode material. The nitrogen-doped multilayer rose-shaped hard carbon material prepared by the invention is a material with immunity to environmental influence, belongs to a mesoporous carbon material with stable chemical components and controllable shape in the porous field, has the advantages of regular structure, relatively good stability and the like, and has the properties of high capacity, good rate and the like as a negative electrode material.

The invention discloses a multi-cavity mesoporous carbon nanosphere battery material and a preparation method and application thereof, and belongs to the technical field of ion batteries, the method comprises the following steps: mixing a cosolvent and a surfactant, and stirring until the cosolvent and the surfactant are dissolved; adding a carbon source monomer, and stirring until dissolving; adding a pore-foaming agent, and stirring to form a suspension; and finally, adding a hydrogen bond catalyst, and after the stirring reaction is finished, washing, freeze-drying and carbonizing to obtain the multi-cavity mesoporous carbon nanosphere battery material. The problems of poor micelle stability and low repeatability of a traditional soft template method are solved through cooperative regulation and control of catalysis of the hydrogen bond catalyst and precise assembly time. By simply controlling the reaction time, a product with the multi-cavity structure reaching 65.3%-92.5% is stably and repeatedly prepared and far exceeds 31.7% of that of a non-catalytic system, and precise customization of the microstructure of the material is achieved. The multi-cavity structure can better buffer the volume change caused by sodium ion intercalation / deintercalation in the charging and discharging process, and is beneficial to maintaining the structural integrity of the electrode material.

The invention discloses a coal mine return air corner CO purification method based on catalytic oxidation, and relates to the technical field of coal mine return air corner CO purification, the coal mine return air corner CO purification method comprises the following steps: mixing manganese salt, cerium salt and a complexing agent by adopting a sol-gel coprecipitation method, stirring to form sol, and sequentially drying and calcining at high temperature to prepare a Mn-Ce-O composite oxide catalyst precursor; loading the Mn-Ce-O composite oxide catalyst precursor on a mesoporous carbon carrier subjected to hydrophobic modification treatment through an impregnation method, and carrying out drying and inert atmosphere heat treatment to obtain the low-temperature adaptive composite catalyst with an oxygen vacancy structure and moisture resistance, forming the low-temperature adaptive composite catalyst into a regular structure unit, filling the regular structure unit into a front end area of a reactor to form a first catalyst layer, filling a downstream area of the reactor with a thermal stability catalyst to form a second catalyst layer, and forming a catalytic reaction structure with an activity gradient along an airflow direction; the catalytic reaction structure with the activity gradient is integrated in a modular shell.

The invention belongs to a lithium ion battery negative electrode material, and particularly relates to a porous carbon matrix for a silicon-carbon negative electrode and a preparation method of the porous carbon matrix. The specific surface area of the porous carbon material is not less than 1800m < 2 > / g, and the pore volume is not less than 0.9 cm < 3 > / g; and the mechanical strength is 10-17 MPa. According to the ordered mesoporous carbon matrix prepared by adopting a soft template method, pores of the material are generated from inside to outside, the pore distribution is uniform, the particle consistency is high, the pores are highly ordered and through cubic mesopores, and the pore diameter is about 5nm. After simple activation treatment, the specific surface area and micropore channels of the material can be effectively improved, and the material is suitable for being used as a base material of chemical vapor deposition silicon. In addition, the carbon material has a high-strength carbon skeleton, the particle strength is high, and an effective confinement effect can be provided to maintain the volume integrity of the silicon particles. The prepared silicon-carbon negative electrode material has higher particle capacity, more stable cycle performance and better rate capability, and meanwhile, the process steps are simple and efficient.

Herein is described a composite material, the composite material comprising composite 5 particles comprising particles of a mesoporous carbon support material having dispersed on their surfaces noble metal nanoparticles and / or noble metal-M alloy nanoparticles and optionally particles of the elemental metal M or metal oxide MOy, wherein y is >0 to a stoichiometric value of the metal oxide, wherein M is a less noble metal than the noble metal, wherein the composite particles have a BJH average pore diameter of from 2 to 0 50 nm and a particle size D90, as measured by laser diffraction and volume distribution, of 10 µm or less.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a dry battery pole piece, a preparation method thereof and a battery comprising the pole piece, and the method comprises the following steps: S1, preparing a composite current collector; s2, preparing an electrode film: S21, preparing a positive electrode film, and S22, preparing a negative electrode film; s3, preparing a pole piece green body: sequentially laminating the positive electrode film, the composite current collector and the negative electrode film, and carrying out gradient pressure rolling at 120-180 DEG C, linearly increasing the pressure from 5-10MPa at the edge to 15-20MPa at the center, and controlling the rolling speed to be 1-3m / min, so as to form the pole piece green body; and S4, preparing the dry-method battery pole piece. The composite current collector adopts a three-layer substrate structure of a metal substrate layer, mesoporous carbon, an MOF composite transition layer and a conductive polymer transition layer, gradient pores are formed through laser drilling, and an AlO nano coating is deposited to enhance interface bonding.

The invention relates to a preparation method of a silicon-carbon negative electrode material, the silicon-carbon negative electrode material and application of the silicon-carbon negative electrode material, the preparation method comprises the following steps: firstly, circularly depositing on the outer surface of micro-mesoporous carbon and the surface of a pore wall through an atomic layer deposition method to form a multi-layer oxide monomolecular isolation layer and a multi-layer oxide monomolecular functional layer, and then carrying out silicon deposition and carbon coating treatment to obtain the silicon-carbon negative electrode material. The silicon-carbon negative electrode material is obtained; the multi-layer oxide monomolecular isolation layer of the silicon-carbon negative electrode material can effectively block the reaction between a carbon source and active silicon and inhibit the generation of silicon carbide side reaction, and the multi-layer oxide monomolecular functional layer can reduce the migration barrier of lithium ions and improve the ionic conductivity, so that the silicon-carbon negative electrode material can be applied to the lithium ion battery, and the service life of the lithium ion battery is prolonged. And the first-cycle coulombic efficiency and the cycle capacity retention ratio of the lithium ion battery can be effectively improved.

The invention relates to a preparation method of a bio-based mesoporous carbon material, and belongs to the technical field of carbon material preparation. The invention provides a preparation method of a bio-based mesoporous carbon material, and the bio-based mesoporous carbon material is prepared by taking agricultural and forestry wastes as raw materials through three steps of pretreatment, phosphoric acid activation and polyaniline-graphene quantum dot compounding. In the pretreatment stage, the raw materials are crushed, soaked in an ethanol-acetone mixed solution at 40-80 DEG C for 2-6 h and dried, and powder B is obtained; in the phosphoric acid activation stage, a 50-80% phosphoric acid solution is used for dipping for 12-48 hours according to the mass ratio of 1: (2-5), and carbonization is performed under the protection of 400-700 DEG C nitrogen to obtain a solid product In the compounding stage, D is dispersed in a 0.1-1 mol / L aniline hydrochloric acid solution, after polymerization is initiated by ammonium persulfate, 0.01-0.1 g / L graphene quantum dot solution is added for compounding, and after centrifugal drying, the high-performance carbon material with the specific surface area larger than or equal to 1800 m < 2 > / g, the proportion of 2-5 nm holes larger than 35% and the mesoporous rate larger than 75% is prepared, and the high-performance carbon material is suitable for the field of supercapacitors.

The invention relates to a uniform carbon-coated mesoporous silicon carbon negative electrode material and a preparation method and application thereof.The preparation method comprises the steps that a product obtained after pyrolysis and carbonization of a biomass carbon source is subjected to alkali activation treatment, acid pickling, drying, smashing, passivation, water washing and drying are conducted to obtain a mesoporous carbon matrix, nanometer silicon particles are deposited in pores of the mesoporous carbon matrix, and the uniform carbon-coated mesoporous silicon carbon negative electrode material is obtained. Then selecting a low-temperature carbonization material and polyethylene glycol to perform pre-carbonization and complete carbonization treatment on the mesoporous silicon carbon material to obtain a carbon coating layer, and finally obtaining the uniform carbon-coated mesoporous silicon carbon negative electrode material. When the uniform carbon-coated mesoporous silicon carbon negative electrode material is applied to a lithium battery, the mesoporous skeleton can effectively inhibit volume expansion of silicon in a battery circulation process, and the uniform carbon-coated layer can effectively reduce the risk of direct contact between the negative electrode material and an electrolyte, so that a stable SE I film is formed to reduce the occurrence of side reactions; and the first coulombic efficiency and the cycle performance of the battery are further improved.

The invention relates to the technical field of carbon material preparation, and discloses a dispersed metal monatomic nitrogen-doped spherical mesoporous carbon material and a preparation method thereof, and the preparation method comprises the following steps: introducing a vinyl-containing metal precursor in a prepolymer stage, and grafting a metal center to a polymer skeleton in situ through chemical bonding; then preparing phenolic resin balls by using the amphiphilic block copolymer as a soft template and combining an emulsification curing process; and finally, carbonizing the resin balls, and introducing water vapor with a specific proportion for activation to construct mesoporous and microporous graded channels. According to the invention, agglomeration of metal atoms at a high temperature is effectively inhibited through in-situ chemical bonding, and high-dispersion loading of single atoms is realized; meanwhile, the soft template and water vapor activation have a synergistic effect, so that the material is endowed with a high specific surface area and a developed hierarchical pore structure. When the obtained material is used as a supercapacitor electrode, high specific capacitance, excellent rate capability and good cycling stability are shown.

The invention discloses a ruthenium-based rare earth composite catalyst and a preparation method and application thereof, the composite catalyst is formed by loading alloy particles of Ru metal and rare earth metal on carboxyl modified lignin derived mesoporous carbon, the molecular formula of the composite catalyst is RuxREy-CLC, x is equal to 0.5-1, y is equal to 0.01-0.1, and RE is any one of neodymium, cerium, lanthanum, samarium, gadolinium, erbium, dysprosium and praseodymium; the catalyst is obtained by coordinating ruthenium ions, rare earth metal ions and carboxyl modified lignin and then carbonizing. According to the ruthenium-based rare earth composite catalyst, more catalytic active sites can be provided through alloy nanoparticle ultra-fining and high dispersion, OH * strong adsorption poisoning is remarkably weakened through introduction of rare earth metal, the excellent alkaline hydrogen evolution reaction electrocatalytic activity is shown, the catalytic stability is improved, and the catalytic activity of the catalyst is improved. The comprehensive performance is obviously superior to that of similar and commercial catalysts, and the catalyst has considerable energy application potential.

The invention relates to the technical field of battery silicon negative electrodes, in particular to a silicon-carbon composite material and a preparation method and application thereof. The silicon-carbon composite material comprises a three-dimensional through mesoporous carbon skeleton, nano silicon particles loaded in mesopores and a gradient carbon coating layer, nano silicon and the carbon skeleton are connected through Si-O-C covalent bonds, and the gradient carbon coating layer is composed of a soft carbon inner layer, a graphitized carbon middle layer and a compact hard carbon outer layer. The preparation method comprises three steps of synthesis of a three-dimensional through mesoporous carbon skeleton, confinement silicon loading and gradient carbon coating. The material solves the problems of silicon particle agglomeration, volume effect and interface instability, has excellent electrochemical performance, can be used as a lithium ion battery negative electrode material, is suitable for a next-generation high-energy lithium ion battery, and improves the cycling stability and capacity performance of the battery.

An actuator includes a twisted and coiled polymer fishing line and an untwisted resistance heating wire (TCPFLRHW) actuator and a coating on the TCPFLHRW actuator. The coating includes a mixture of carbon nanotubes, metal nanoparticles, and mesoporous carbon nanoparticles, and in some variations, the coating includes a polymer matrix with the carbon nanotubes, metal nanoparticles, and mesoporous carbon nanoparticles disposed in the polymer matrix. And the actuator exhibits enhanced actuator parameters such as actuator efficiency, hydrophobicity, power consumption, actuation frequency, dynamic actuation and cooling rate.

The invention relates to the technical field of hydrogenation catalysts, and discloses a coal-based cracking C9 + component hydrogenation catalyst and a preparation method and application thereof. The method comprises the following steps: (1) carrying out cocurrent-flow coprecipitation on pseudo-boehmite, mesoporous carbon and a precipitator to obtain precipitated slurry; sequentially aging the obtained precipitate slurry, and separating out a solid phase to obtain modified pseudo-boehmite; (2) mixing, kneading and molding the modified pseudo-boehmite obtained in the step (1), kaolin, an adhesive and an extrusion aid, and then performing first drying and first roasting to obtain a composite carrier; and (3) preparing an impregnation liquid containing a fluoride salt, a first active metal salt and a second active metal salt, impregnating the composite carrier in the impregnation liquid by adopting a rotary spray impregnation mode, introducing gas into the impregnation reactor after impregnation is completed, and then carrying out second drying and second roasting. According to the technical scheme, the catalyst has high catalytic activity, carbon deposition resistance and high hydrodesulfurization activity.

This invention belongs to the field of electrocatalytic hydrogen evolution catalyst technology, and particularly relates to an ultrasmall intermetallic compound confined in mesoporous carbon interstices and its preparation method. Using mesoporous silica SBA-15 as a hard template, sulfur-containing amino acids are filled into the SBA-15 channels via capillary action as a carbon source. Simultaneously, potassium chloroplatinate and a transition metal source are also filled into the SBA-15 channels along with the sulfur-containing amino acids. The mass ratio of potassium chloroplatinate, SBA-15, and sulfur-containing amino acids is 1:5–10:20–30, and the metal mass is consistent with the atomic ratio in the formed Pt-based intermetallic compound. The reaction also includes a solvent and water. This invention uses electrocatalytic hydrogen evolution as a model reaction to investigate the catalytic activity and stability of this PtFe ultrasmall nanoparticle embedded in a mesoporous carbon support. Electrocatalytic results show that it exhibits excellent activity and stability, meeting the requirements of related applications and development.

The application discloses a mesoporous carbon preparation process with recyclable silicon source and mesoporous carbon with small pore size and large specific surface area. The mesoporous carbon preparation process comprises the following steps: preparing a silicon template: reacting a fluosilicic acid solution with calcium carbonate, and separating calcium fluoride precipitate and silica sol; the pH of the silica sol is 2-5; the concentration of silicon dioxide in the silica sol is 1-8 wt%; preparing a precursor: dissolving a carbon source and an organic acid in the silica sol, drying, grinding, and carbonizing in an inert atmosphere to obtain a C / Si precursor; the organic acid comprises at least one of oxalic acid, tannic acid, acetic acid and citric acid; removing the silicon template and recycling the silicon source: treating the C / Si precursor with hydrofluoric acid, and performing solid-liquid separation to obtain mesoporous carbon and a fluosilicic acid solution, wherein the fluosilicic acid solution is used for preparing the silicon template. The specific surface area of the mesoporous carbon is greater than 800 m 2 / g, and the pore size is less than 6 nm.

This invention discloses a sol-gel preparation method for mesoporous carbon membranes, as well as the mesoporous carbon membranes and their applications. The preparation method includes: (1) dissolving phenolic compounds in a solvent and adding a template agent; (2) adding aldehyde compounds and amine compounds to obtain a mixture; (3) subjecting the mixture to a hydrothermal reaction to obtain an organic membrane precursor; and (4) carbonizing the organic membrane precursor at high temperature; wherein the solid content of the mixture is 20-30 wt%. The method of this invention significantly shortens the production cycle, has high preparation efficiency and success rate, can be molded to any size, and the obtained porous structure can withstand high-temperature treatment without collapsing. The obtained mesoporous carbon membrane can be applied to gas separation or liquid separation.

The invention relates to the field of mesoporous carbon material preparation, and discloses a preparation method of exquisite hierarchical pore structure mesoporous carbon, which comprises the following steps: uniformly stirring solid silicon balls, a carbon source, a surfactant, water and ethanol to obtain a mixed solution; adding cobalt nitrate, heating and stirring until the mixture is sticky, so as to obtain a carbon-silicon compound precursor; performing high-temperature carbonization in an inert atmosphere to obtain a carbon-silicon compound; soaking the carbon-silicon compound in an alkaline solution, filtering, washing and drying to obtain an exquisite hierarchical pore structure mesoporous carbon primary product; and carrying out high-temperature curing in an inert atmosphere, naturally cooling, cleaning and drying. The exquisite hierarchical pore structure mesoporous carbon is synthesized by adopting a solid silicon ball grafted CTAB one-pot method, the problem that a traditional hard template method for synthesizing mesoporous carbon is tedious in technology is solved, the technological process is simplified, and the method has high repeatability, mechanical stability and three-dimensional connectivity.

The screening device for spherical mesoporous carbon production comprises a machine body, a plurality of screening plates are installed in the machine body in a left-right sliding mode, the screening plates are distributed up and down, shells are fixed to the left side and the right side of the machine body respectively, a plurality of sector gears are installed in the shells through bearings, and the sector gears are meshed with the screening plates. A first driving mechanism and a second driving mechanism are installed on the two sides of the sector gear correspondingly. A plurality of baffles are slidably installed in the screening plate at equal intervals and used for blocking spherical mesoporous carbon on the screening plate, reset pieces are installed among the baffles, and connecting columns are fixed to the left side and the right side of the screening plate correspondingly. The first driving mechanism is matched with the connecting column to drive the screening plate to move left and right in a reciprocating mode. According to the screening device for spherical mesoporous carbon production, through the arrangement of the multiple baffles, the screening time of materials on the screening plate is prolonged, and the screening effect of the materials is improved.

An electrode including a substrate, a binding compound, date seed mesoporous carbon, and a conductive carbon (CC) other than the date seed mesoporous carbon. The date seed mesoporous carbon has a surface area of 600-800 m2 / g, an average pore size of 1-5 nm, and a sheet morphology. A mixture of the binding compound, the date seed mesoporous carbon, and the conductive carbon other than the date seed mesoporous carbon is coated on the surface of the substrate.