892 results about "Carbon particle" patented technology

Resonant sensors for environmental health risk detection are disclosed. A mechanical member may include at least one meso-scale or micro-scale resonator disposed on a surface of the mechanical member. Additionally, the at least one meso-scale or micro-scale resonator may include a plurality of first carbon particles configured to uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the at least one meso-scale or micro-scale resonator. Further, the at least one meso-scale or micro-scale resonator may be configured to resonate at a first frequency in response to the electromagnetic ping when the mechanical member is in a first state, and may be configured to resonate at a second frequency in response to the electromagnetic ping when the mechanical member is in a second state.

The invention discloses a porous carbon and silicon carbon material as well as a preparation method and application thereof. The pore structure of the porous carbon comprises mesopores and micropores; in the pore structure, the pore volume ratio of mesopores is 3-20%, and the pore volume ratio of micropores is 80-97%; the adsorption and desorption isotherm of the mesopores is one or more of an H1 type hysteresis loop, an H2 type hysteresis loop and an H3 type hysteresis loop; the pore structure is filled with carbon particles, and the carbon particles are spherical carbon particles or fusiform carbon particles. By regulating and controlling the pore structure of the porous carbon, the performance of the silicon-carbon negative electrode is remarkably improved, and the double advantages of high strength and low expansion are achieved. The preparation method disclosed by the invention has obvious advantages in the aspects of cost, time and safety.

The invention relates to the technical field of batteries, in particular to silicon carbon particles, a negative plate and a battery. The invention provides a silicon-carbon particle. The surface of the silicon-carbon particle is provided with a concave part; the number N of the concave parts on the surfaces of the silicon carbon particles is greater than or equal to 1; the diameter of the concave part is 0.05 [mu] m-5 [mu] m; the depth of the recessed part is 10 nm to 5 [mu] m. The sunken parts are arranged on the surfaces of the silicon-carbon particles, so that the cycle stability and the expansion performance of the silicon-based negative electrode material are improved.

A slurry for use to form or repair a silicon carbide coating is provided. In one aspect, the slurry includes solid particles and a carbonaceous resin. The solid particles include silicon carbide particles, silicon particles, and carbon particles. A method of fabricating a silicon carbide coating is also provided. In one aspect, the method includes applying the slurry, heating the slurry, and forming the silicon carbide coating from the solid particles and the carbonaceous resin. A method of repairing a silicon carbide coating is also provided. In one aspect, the method includes applying the slurry to a damaged region of the silicon carbide coating, heating the slurry, and repairing the silicon carbide coating with the solid particles and the carbonaceous resin in the damaged region.

The invention relates to a graphite negative electrode material and a preparation method thereof, a negative electrode plate and an electrochemical device. The graphite negative electrode material comprises secondary particles formed by granulating and carbonizing 20%-90% of a doped porous graphite precursor, 5%-30% of hard carbon particles and 5%-50% of a coating agent, in the secondary particles, the hard carbon particles are at least partially filled in holes of the doped porous graphite precursor, and the coating agent is at least partially filled in the holes of the doped porous graphite precursor. And after the coating agent is carbonized, at least part of the coating agent forms amorphous carbon to coat the outer layer of the doped porous graphite precursor. According to the scheme provided by the invention, the doped porous graphite precursor can be compounded with the hard carbon particles and the coating agent to obtain the graphite negative electrode material with high capacity and fast charging performance.

The invention discloses a lithium ion battery negative pole piece, a preparation method thereof and a lithium ion battery, and belongs to the technical field of lithium ion battery electrode materials. The lithium ion battery negative electrode plate provided by the invention comprises a negative electrode current collector; the graphite layers are arranged on the surfaces of the two sides of the negative electrode current collector; the graphite layer comprises graphite particles, a conductive agent and a binder; the hard carbon layer is arranged on the surface of one side, far away from the negative electrode current collector, of the graphite layer; the hard carbon layer comprises hard carbon particles, a conductive agent and a binder; wherein the graphite layer and the hard carbon layer meet the relational expression: 1.4 < = rho1 * D1 + rho2 * D2 + PD < = 1.75. According to the invention, through proper design of the composite layer structure, the surface density, the compaction density and the particle sizes of the graphite particles and the hard carbon particles, the rapid charging performance of the lithium ion battery is improved, and meanwhile, relatively high energy density is kept; and the negative pole piece also has relatively good flexibility, so that the problems of breakage and powder falling in the processing process are relieved.

The invention belongs to the technical field of batteries, and particularly relates to a porous carbon material, a silicon carbon material, a secondary battery and an electric device. The porous carbon material comprises carbon particles, the carbon particles have a porous structure, the porous structure comprises mesopores and micropores, and the number of the mesopores is not less than that of the micropores; the volume distribution particle size of the carbon particles meets the condition that Dv1 is greater than or equal to 0.5 mu m, and the specific surface area of the porous carbon material is 1,400 m < 2 > / g to 1,800 m < 2 > / g. The porous carbon material provided by the invention has a suitable porous structure, the number of micropores and mesopores in the porous structure is controllable, the content of a silicon material formed in the porous structure and the size of silicon crystal grains can be conveniently controlled, and a part of volume space for buffering the expansion of the silicon material can be reserved to improve the cyclicity of a battery; on the other hand, micro-powder particles attached to the surfaces of the carbon particles are reduced, the volume distribution particle size concentration ratio of the carbon particles is improved, and the number of cycles of the battery is increased.

The invention provides a lithium supplement agent. The lithium supplement agent comprises lithium oxalate particles, conductive carbon particles and additive particles, the conductive carbon particles comprise at least one of carbon black, carbon nanotubes, graphene and ketjen black; the additive particles comprise at least one of MnO2, NiO, Co3O4, TiO2, Fe3O4, MnC, TiC, Mo2C and MoO3, and the additive particles comprise at least one of MnO2, NiO, Co3O4, TiO2, Fe3O4, MnC, TiC, Mo2C and MoO3. According to the lithium supplementing agent disclosed by the invention, by limiting the structure and components of the lithium oxalate lithium supplementing agent, the carbon material is respectively coated in the lithium oxalate and the additive to form a good conductive network, and finally a composite material of the lithium oxalate, the carbon material and the additive is formed, so that the decomposition voltage can be sufficiently reduced; the lithium supplement effect of the lithium oxalate can be exerted to the maximum extent.

The invention provides a system and method for detecting free carbon particles in transformer oil based on a microelectrode array, and the system comprises a sampling module which comprises an oil inlet pipeline and a filtering device, an oil sample is conveyed to a microelectrode array sensor module from a transformer oil tank through the oil inlet pipeline, and the filtering device is located in the oil inlet pipeline; a filter membrane is arranged in the filter device to remove impurities in the oil sample; the microelectrode array sensor module comprises a microelectrode array sensor, the microelectrode array sensor is nanoelectrodes arranged on a silicon substrate, the surface of the microelectrode array sensor is coated with graphene oxide to adsorb free carbon particles in an oil sample, and when the free carbon particles are adsorbed to the surface of the microelectrode array sensor, an adsorption signal is generated; and the signal processing unit is used for extracting the characteristic frequency and intensity of the vibration of the carbon particles in the adsorption signal, and classifying the carbon particles according to the characteristic frequency and intensity of the carbon particles. The device is compact in structure, the maintenance cost is reduced, and the operation process is simplified.

An electrode assembly for a lithium-ion battery is provided. The electrode assembly may comprise a metal foil having thereon a conductive coating including a polymeric binder and a self-supporting electrode film of active material and fibrillated composite binder laminated with the metal foil such that the conductive coating is between the metal foil and self-supporting electrode film. The fibrillated composite binder may include carbon particles and a same polymeric binder.

The invention provides a negative plate and a battery, the negative plate comprises a current collector and an active material layer located on at least one side surface of the current collector, and the active material layer comprises a first coating close to the surface of the current collector and a second coating far away from the surface of the current collector; the first coating comprises first graphite particles and second graphite particles; the second coating comprises third graphite particles and silicon carbon particles; and a plurality of concave parts are arranged on the surface of the active material layer. According to the negative electrode plate, the expansion problem and the lithium separation problem of the silicon-based material doped graphite negative electrode can be inhibited, so that the cycle performance and the rate capability of the lithium ion battery are remarkably improved.

The invention belongs to the technical field of water treatment, and relates to a preparation method and application of bentonite-based iron-carbon immobilized microbial particles. The preparation method of the bentonite-based iron-carbon immobilized microbial particles comprises the following steps: S1, mixing bentonite, plant powder and zero-valent iron, granulating, and pyrolyzing to obtain bentonite-based iron-carbon particles; s2, mixing and wrapping the bentonite-based iron carbon particles, an adhesive and microorganisms in sequence to obtain bentonite iron carbon-microorganism particles; s3, mixing and wrapping the bentonite iron carbon-microorganism particles with an adhesive and a flocculating agent in sequence to obtain bentonite iron carbon microorganism-adhesive flocculation structure particles; and S4, mixing the bentonite iron-carbon microbe-bonded flocculation structure particles with efficient degradation bacteria, and drying to obtain the bentonite-based iron-carbon immobilized microbe particles. The preparation method is easy to operate and low in cost, iron-carbon micro-electrolysis is increased to promote the microbial effect, the activity of microorganisms is improved, and the method is suitable for the field of in-situ remediation of micro-polluted water.

The invention discloses artificial graphite and a preparation method thereof, a negative pole piece, a battery and electric equipment. The preparation method comprises the steps that raw materials are put into a graphitization furnace, the raw materials comprise carbon particles, the particle size of the carbon particles ranges from 1 cm to 8 cm, and the graphitization furnace works in the inert gas atmosphere; the raw materials are controlled to enter a preheating zone of the graphitization furnace, so that the raw materials are preheated, and the temperature of the preheating zone is 800-1500 DEG C; feeding the preheated material into a graphitization area of a graphitization furnace so as to carry out graphitization treatment on the preheated material; and feeding the graphitized material into a cooling area of the graphitization furnace so as to cool the graphitized material. In the implementation mode, the graphitization process is continuous, the procedures do not need to be stopped and switched, all the procedures are carried out in the same graphitization furnace, the production period is shortened, and the productivity can be improved.

The utility model belongs to the technical field of transformer insulating oil detection, and particularly relates to a transformer insulating oil breakdown voltage field detection device which comprises a detection box and supporting legs, and a detection device and a filtering device are arranged in the detection box. According to the field detection device for the breakdown voltage of the transformer insulating oil, the oil temperature of the insulating oil is detected through the temperature sensor, and when the oil temperature is too low, the electric heating wire in the electric heating box is started to heat the insulating oil in the oil conveying pipe, so that the situation that the detection result is influenced due to the unstable oil temperature is avoided; a large number of solid impurity particles such as iron particles, copper particles, carbon particles and fiber particles can be generated in transformer oil due to mechanical vibration, partial discharge and the aging effect of oil paper insulation in the operation process of the transformer, so that after detection is completed, the insulating oil is conveyed into the filter box through the oil discharge pipe, and then the transformer oil is filtered. And solid particles in the insulating oil are intercepted and filtered through the filter screen, so that the service life of the insulating oil is prolonged.

Document (100) with a security feature, comprising: a first substrate layer (103) having a first substrate layer region (105), wherein the substrate layer region (105) is impregnated with a black fluid over the entire thickness of the first substrate layer (103), the black fluid having carbon particles; a second substrate layer (107) with a second substrate layer region (109), wherein the second substrate layer (107) is arranged above the first substrate layer (103), the second substrate layer region (109) having a light reflection characteristic which differs from a light reflection characteristic of the first substrate layer region (105), wherein the first substrate layer region (105) and the second substrate layer region (109) form a composite security feature.

The invention relates to the technical field of heavy oil product treatment, in particular to a method and device for co-production of a carbon material through molten salt pyrolysis of a liquid oil product, and the method comprises the following steps: the liquid heavy oil product is put into an electric heating molten salt reactor through a continuous feeding system, and the molten salt reactor is filled with a molten alkaline molten salt medium; carrying out catalytic pyrolysis reaction on the oil product in a liquid phase environment of the molten salt medium, wherein the oil product stays in the molten salt for 5-10 seconds; the liquid oil product is uniformly cracked in the liquid phase of the molten salt to generate low-carbon hydrocarbon gas, hydrogen and dispersed fine carbon particles, and the carbon particles suspend on the surface under the buoyancy action of the molten salt and are not deposited and gathered; suspended carbon particles are collected from the surface of the fused salt in real time through a mechanical push rod continuous collection system; according to the method, continuous and stable pyrolysis of the heavy oil product and efficient and continuous separation of the product can be realized in the liquid-phase molten salt environment, the production efficiency is improved, and the stability of the product quality is ensured.

The invention relates to the technical field of inorganic non-metallic materials, in particular to an onion carbon preparation method based on a metal organic framework and onion carbon. The preparation method comprises the following steps: S1, synthesizing a metal organic framework precursor; s2, preliminary pyrolysis of the metal organic framework precursor; s3, etching and decomposing the formed metal particles; and S4, carrying out secondary pyrolysis on the primary pyrolytic carbon material. The carbon diameter of the prepared onion is 5-20 nm, and the carbon layer spacing is 0.34 nm. According to the preparation method, a metal organic framework is taken as a precursor, a two-step pyrolysis method is adopted, the precursor is carbonized at high temperature, a carbon material is etched again by ammonia gas and other gases released by thermal decomposition of melamine, and under the action, graphene is rearranged in the form of the same sphere center layer to form onion carbon particles with uniform sizes. The temperature and the reaction time in the preparation process can be accurately controlled, the preparation process is simple, the cost is low, the prepared onion carbon has relatively high purity and uniformity, and the oxygen reduction catalytic activity can be improved.

The invention provides a brake disc, a preparation method, a braking system and a vehicle. The brake disc comprises a compact area and a plurality of nano-porous areas distributed in the compact area at intervals. Wherein the compact area comprises a carbon fiber reinforced silicon carbide material, and the nano-porous area comprises continuous-phase cracked carbon and carbon particles distributed in the cracked carbon; wherein the pore diameter of the nano-porous area is in the range of 10 nm to 100 nm, and the porosity is in the range of 15% to 30%. The nano porous area in the brake disc can improve the toughness of the brake disc, so that the service life of the carbon ceramic brake disc can be prolonged.

The invention discloses a low-cost regenerative converter slag-stopping sliding plate brick and a preparation method thereof, and belongs to the technical field of refractory materials, the sliding plate brick comprises the following components by mass percentage: 59-62% of modified aluminum-zirconium-carbon regenerated material particles, 1-5% of silicon carbide particles, 35-40% of co-grinding powder, the total percentage being 100%, and 3.5-4.5% of additional phenolic resin. According to the low-cost regenerative sliding plate brick for converter slag stopping and the preparation method, the sliding plate brick is recycled after being used, aluminum-zirconium-carbon particles are obtained through the processes of sorting, iron removal, crushing, acid pickling, drying and the like, then the aluminum-zirconium-carbon particles are modified through metal aluminum to obtain modified aluminum-zirconium-carbon particles, and the modified aluminum-zirconium-carbon particles are of a matrix structure wrapping metal aluminum powder layer by layer; the prepared sliding plate brick is excellent in high-temperature performance and corrosion resistance, and the problems that in the prior art, a sliding plate brick for slag stopping is rapid in cast hole reaming, chipping and serious in corrosion are solved.

The invention provides a method for measuring the state of slurry by using graded centrifugation. The method comprises the following steps: S1, centrifuging slurry to be measured at different rotating speeds respectively, and taking supernate of the slurry; s2, measuring the viscosity, the conductivity and the light transmittance of the supernate; s3, comparing the viscosity data at different rotating speeds to obtain particle size and stability data of particles in the slurry; comparing the conductivity data at different rotating speeds to obtain adhesion data of ion resin on carbon particles in the slurry; according to the method, the constraint of traditional thinking is broken through, the state of the slurry is analyzed by adopting a method for determining the state of the slurry through graded centrifugation, the problem that the state of the catalyst slurry is difficult to analyze for a long time is solved, and the method is suitable for large-scale popularization and application. The operation method is simple and high in practicability.

An electrode composite material and a method of making same are disclosed. A mixture that includes lithium sulfide (Li2S) particles containing a Li2S compound, carbon particles, and halogenated lithium phosphorous sulfide (LPS-X) particles containing an LPS-X (X is F, Cl, Br, and / or I) compound are provided. The LPS-X particles have crystallinity which can be confirmed with XRD of the LPS-X particles or the mixture showing XRD peaks indicative of crystalline LPS-X. The mixture does not include lithium phosphorous sulfide (LPS) particles made of an LPS compound. The mixture is ball-milled to provide a ball-milled composite material. At least part of the LPS-X compound contained in at least part of the LPS-X particles is converted to the LPS compound. XRD of the ball-milled composite material shows none of the XRD peaks indicative of crystalline LPS-X.

The invention relates to the technical field of battery negative electrode materials, in particular to irregular spherical porous carbon and a preparation method and application thereof, and a silicon-carbon composite material and a preparation method and application thereof. The liquid phenolic resin is emulsified, compounded, cross-linked and cured under the condition of an oil-soluble and water-soluble compound emulsifier, meanwhile, the shape of the obtained resin is changed in an ultrasonic-assisted mode under the combined action of ultrasonic disturbance and different interfacial tensions, spherical resin is adjusted into irregular spherical resin, and the spherical resin is prepared into the irregular spherical resin. And performing pyrolysis and gas activation to obtain the irregular porous spherical carbon. Compared with spherical carbon, the irregular spherical carbon prepared by the invention has the advantages that on the premise of keeping the strength of the spherical carbon, the irregular spherical carbon can increase the contact area between carbon particles and a binder, and the carbon particles and the binder are not easy to separate, so that the cycling stability of a battery (especially a lithium ion battery) is improved.

The invention belongs to the technical field of SiC crystal growth, and particularly relates to a thermal field component for SiC crystal growth and a preparation method of the thermal field component. The thermal field component comprises a thermal field component body, and the thermal field component body is made of a porous tantalum carbide material. The thermal field component can efficiently filter carbon particles, has corrosion resistance and long service life, and can remarkably reduce the production cost.

The invention relates to the technical field of batteries, in particular to a silicon-carbon negative electrode material and a lithium ion secondary battery. The silicon-carbon negative electrode material comprises silicon-carbon particles, the silicon-carbon particles comprise a matrix, and the matrix comprises a porous carbon matrix and silicon particles located in internal holes of the porous carbon matrix; the porous carbon substrate is provided with open pores and closed pores, the open pores contain silicon particles, the closed pores contain an element K, and based on the total mass of the silicon carbon particles, the mass content of the element K is 50 ppm to 1000 ppm; the silicon-carbon particles comprise halogen, and based on the total mass of the silicon-carbon particles, the mass content of the halogen is 50 ppm to 2000 ppm; the silicon carbon particles and deionized water are mixed according to the mass ratio of 1: 10 to obtain an aqueous solution, the pH value of the aqueous solution at 25 DEG C is pH 1, and the pH 1 is 6-8. Comprising the silicon-carbon negative electrode material disclosed by the invention has the advantages that the expansion rate is improved, and the rate capability and the cycle performance are improved.

The invention belongs to the technical field of batteries, and particularly relates to a preparation method of coating slurry, a silver-carbon negative electrode plate, a preparation method of the silver-carbon negative electrode plate and a solid-state battery. Compared with the prior art, by controlling the agglomeration degree of the silver material in the negative electrode active coating, silver and carbon particles can be uniformly dispersed, and on the basis of avoiding the generation of lithium dendrites, attachment sites and spaces of the silver particles on the carbon particles are increased, so that the safety performance and the electrical performance of the battery are improved.

A method comprising obtaining a bodily fluid from a subject; contacting the bodily fluid with an adsorbent material comprising a synthetic carbon particle (SCP) to produce a first filtrate having a level of disease mediators (y); contacting the first filtrate with an adsorbent material comprising the SCP and an anion exchange resin where the ratio of SCP to anion exchange resin is in a range from about 0.1:100 to 100:0.1 to produce a second filtrate; contacting the second filtrate with an adsorbent material comprising the SCP and a cation exchange resin where the ratio of SCP to cation exchange resin is in a range from about 0.1:100 to 100:0.1 to produce a third filtrate.

The invention relates to the technical field of lithium / sodium ion battery negative electrode materials, in particular to a phosphorus-based negative electrode material with a solid electrolyte interface and a preparation method and application thereof.The method comprises the following steps that phosphorus powder, a carbon material and metal fluoride are mixed and subjected to ball milling, and a composite negative electrode material is obtained; and sieving the composite negative electrode material to obtain the phosphorus-based negative electrode material. The solid electrolyte interface with high strength and high lithium ion / electron transmission is constructed in situ by doping the metal fluoride, so that the cycling stability and the rate capability of the battery are improved. When the lithium ion battery is discharged, the fluorinated metal can construct a solid electrolyte interface rich in lithium fluoride with high Young modulus and lithium-metal alloy with high ion / electron conductivity on the surfaces of phosphorus-carbon particles in situ before phosphorus-carbon lithium embedding, and the strength of the solid electrolyte interface can be enhanced by means of the lithium fluoride with high Young modulus; the expansion of the phosphorus-carbon negative electrode is inhibited, so that the cycling stability is improved.

Some aspects of the present disclosure are generally directed to systems for electrochemically generating compounds, for example, for generating hydrogen peroxide or other applications. In some cases, the systems may include electrodes containing a substrate comprising non-woven fibers comprising carbon, PTFE particles on the substrate, and / or an active material, for example, carbon particles, on the substrate and / or the PTFE. In some embodiments, the systems may generate and / or flow a two-phase solution over and / or through at least a portion of an electrode. Some systems using the electrode structures and / or two-phase solution may promote the formation of three-phase boundaries, and thus may facilitate the electrocatalytic generation of certain compounds at the three-phase boundaries. Still other aspects are directed to methods of making and / or using the systems, or the like.

The invention provides a cooperative washing process for efficiently utilizing gasified slag, and relates to the field of gasified slag. The cooperative washing process based on efficient utilization of the gasified slag comprises the following steps: a, feeding and preliminary screening: preliminarily screening a gasified slag raw material through a vibrating screen to remove coarse slag with larger particle size, and conveying the screened raw material to a subsequent treatment link through an automatic feeding system, b, crushing: performing secondary crushing on the screened gasified slag by using a high-efficiency energy-saving crusher to ensure that the particle size is uniform; by adopting the high-efficiency and energy-saving crusher, the low-energy-consumption centrifugal dehydrator and the low-temperature and high-efficiency drying equipment, the overall energy consumption in the technological process is greatly reduced, and particularly, the problem of high energy consumption in the traditional process is effectively solved in the links of crushing, dehydrating and drying. Meanwhile, by means of the intelligent dense medium preparation equipment and the multi-layer intelligent grading system, efficient separation and recovery of carbon particles are guaranteed, the recovery rate of carbon is greatly increased, and resource waste is reduced.

The invention relates to a porous silver-carbon composite material which contains a carbon powder. The carbon powder contains porous carbon particles, and the carbon particles have pores with an open and continuous pore structure. The porous silver-carbon composite material further contains silver particles, which are at least partly bonded to the surface of the porous carbon particles. The silver-carbon composite material can be used in an electrode of a solid-state battery.