15results about How to "Increase the effective surface area" patented technology

The embodiment of the invention provides an energy storage device with conductive polymer sponge and an intelligent monitoring system of the energy storage device, and belongs to the field of electrochemistry, the energy storage device comprises a shell, and an electrode assembly, electrolyte and a current collector which are arranged in the shell; the electrode assembly comprises a positive electrode, a negative electrode and a diaphragm arranged between the positive electrode and the negative electrode, and the positive electrode and the negative electrode are composite electrodes of conductive polymer sponge; the conductive polymer sponge is a polymer sponge which is prepared through an in-situ chemical oxidation polymerization technology and has a porous network, and the energy storage device further comprises a control system used for controlling the operation state of the energy storage device. According to the embodiment of the invention, the polymer sponge with a highly interconnected porous network is prepared through an in-situ chemical oxidation polymerization technology on the basis of a unique microstructure of the conductive polymer sponge, and the three-dimensional structure of the polymer sponge increases the effective surface area of an electrode and improves electrochemical reaction active sites, so that more efficient charge transmission and storage are realized.

The invention discloses a method for repairing a mine by using rock weathered artificial soil, and relates to the field of mine repairing. According to the method, the waste slag stone left in the mine history and the waste slag stone generated in the implementation process of mine remediation are effectively utilized, the slag stone is changed into artificial soil by accelerating rock weathering and artificially constructing a soil structure layer, and a plant growing soil layer with the planting capacity, the water and fertilizer retention capacity and sufficient nutrient substances is provided for mine remediation. The method provided by the invention can be effectively connected to a mine restoration engineering link, so that extra cost generated by outward transportation and disposal of the waste slag stone is avoided, and the influence of large-scale exogenous soil dressing on the surrounding environment in the soil sampling process is also avoided. The method for repairing the artificial soil in the mine can give consideration to solid waste utilization, ecological restoration and economic value-added benefits, and has a good application prospect.

The invention relates to the technical field of membrane separation, in particular to a reverse osmosis membrane with a coralline structure and a preparation method and application thereof. The reverse osmosis membrane comprises a base membrane and a separation layer which are arranged in sequence; the microstructure of the separation layer comprises a coralline structure, a nodule-shaped structure and a leaf-shaped structure at the same time. The reverse osmosis membrane with the coralline structure can increase the effective surface area, increase water transmission channels and reduce the water transmission resistance, so that the water flux of the reverse osmosis membrane is remarkably improved, and the salt rejection rate of the reverse osmosis membrane is not reduced.

According to the pharmaceutical composition containing iguratimod and the preparation method of the pharmaceutical composition, the microcrystalline cellulose colloidal silicon dioxide co-treatment substance and the anhydrous calcium hydrogen phosphate are adopted as filling agents, the flowability and compressibility of particles can be obviously improved, and the problems that due to the fact that the active ingredients are large in proportion and need to be subjected to micronization treatment, the particle size is large, and the particle size is large are solved. And the traditional Chinese medicine composition has the advantages of being simple in preparation method, rapid and complete in dissolution, stable in quality, high in bioavailability and the like. Polacrilin potassium is used as a disintegrating agent, the tablet can be decomposed into very small particles, and the effective surface area for absorbing active substances is increased, so that the dissolution rate and bioavailability of the active substances are improved. Meanwhile, magnesium silicate is used as a flow aid, so that the flowability of total mixed powder can be greatly improved, and the tablet weight difference during tabletting is small.

This invention discloses a perforated chip capacitor and its manufacturing method. The capacitor uses an integral aluminum plate with multiple through holes forming a perforated structure, and at least some of the through holes penetrate the aluminum plate. An oxide layer is formed on the entire surface of the aluminum plate, including the inner surface of the through holes. The manufacturing method includes: welding an anode lead plate to the aluminum plate; laser drilling the aluminum plate to form through holes; acid etching to increase the specific surface area; anodizing to form an oxide layer; and sequentially forming a polymer layer, a graphite layer, and a silver paste layer. This invention, through its integrated porous aluminum plate structure, replaces the traditional multi-layer laminated structure, effectively improving the problems of high leakage current, poor heat dissipation, and insufficient vibration resistance of multilayer capacitors. It also achieves high specific capacitance and low ESR, significantly improving the overall performance and reliability of the capacitor.

The invention discloses a high-efficiency bimetallic catalyst, comprising a substrate carbide C3N4 and a carbonization catalyst CoCu / CoCuN dispersed in the substrate carbide. x The method for preparing a highly efficient bimetallic catalyst comprises the following steps: (1) uniformly distributing an appropriate amount of dicyandiamide in four porcelain crucibles, heating to 350°C in a muffle furnace for 2 hours to obtain a product DCD-350; (2) mixing the substance DCD-350 obtained in step (1), Co(acac)2 and Cu(acac)2 in a ball mill for 1.5 hours in an alternating motion to prepare CoCu / CoCuN x Compared with the prior art, the advantages of the present invention are: it is easy to increase the reaction rate, maintain a high turnover rate, save costs, is economically feasible, and is more stable.

The utility model relates to the technical field of batteries, and particularly provides a pole piece and a battery cell. The pole piece comprises a current collector and an active substance layer arranged on the current collector, the active material layer comprises a frame area and an in-frame area, a plurality of concave parts arranged at intervals are arranged in the in-frame area, and the frame area comprises a convex frame which is located on the edge of the in-frame area and arranged in the circumferential direction of the in-frame area. The electrode plate can significantly increase the effective surface area of the active material layer, provide a larger contact area between an electrode material and an electrolyte, improve the contact efficiency between the electrode material and lithium ions, and promote the diffusion and migration of the lithium ions in the electrode plate, thereby improving the energy density and power density of the battery, and improving the service life of the battery. The charge-discharge speed and the cycle stability of the battery are improved, the polarization phenomenon of the electrode plate is reduced, and the use performance of the battery is improved.

The invention belongs to the technical field of immune cell culture perfusion, and particularly relates to an immune cell culture perfusion device which comprises a base, a plurality of culture trays are arranged at the top of the base, fixing blocks are mounted at the bottoms of the culture trays in an inserted mode, a supporting rod is rotatably mounted at the top of the base, a sliding groove is formed in the supporting rod, and a lifting plate is slidably mounted in the sliding groove. A pump body is fixedly mounted at the top of the lifting plate, a water outlet pipe is fixedly mounted at the water outlet end of the pump body, the bottom end of the water outlet pipe penetrates through the lifting plate and is fixedly provided with a plurality of connecting pipes, and atomizing nozzles are fixedly mounted at the bottom ends of the connecting pipes and are located in the culture trays respectively, and a water inlet pipe is fixedly mounted at the water inlet end of the pump body; the sprayed culture medium can be uniformly attached to the inner wall of the culture disc, compared with the situation that the culture medium is locally gathered in a traditional device, the effective surface area of the culture medium in the culture disc is remarkably increased, and the contact efficiency of immune cells in the culture disc and the culture medium can be greatly improved through the larger surface area.

The utility model discloses a lead frame, including a plurality of parallelly arranged frame groups, and each frame group includes two frame units, and each frame unit includes a carrier area, and four pins located below the carrier area, the carrier area is divided into left carrier area and right carrier area, and the four pins are same in size and are commonly connected with middle ribs, and the two middle ribs of each frame group are equipped with connecting ribs, and the two frame units of each frame group are centrally symmetric with the center of connecting rib as the symmetry center, and the four pins of one frame unit are staggered with the four pins of another frame unit. The two frame units of each frame group are centrally symmetric with the center of connecting rib as the symmetry center, and the four pins of one frame unit are staggered with the four pins of another frame unit, so that the gap between the pins is fully utilized, thereby making the arrangement of the frame unit more compact, the material utilization rate of the lead frame is higher, and the waste of materials is reduced.

This application discloses a method for preparing a graphene / carbon nanotube composite slurry and its application, relating to the field of electrochemical sensing. The method includes: S1, placing multi-walled carbon nanotubes in concentrated sulfuric acid, reacting, washing with deionized water until neutral, and drying to obtain carboxylated carbon nanotubes; S2, adding the carboxylated carbon nanotubes to thionyl chloride, stirring the reaction, rinsing with tetrahydrofuran, and drying to obtain acyl chloride-based carbon nanotubes; S3, mixing the following components: 4.0-6.0% multi-walled carbon nanotubes, graphene microsheets... 0.2-1.0%, dispersant 0.5-1.0%, melamine 3.0-6.0%, balance NMP; S4, add graphene oxide / carbon nanotube filter material to dilute hydrochloric acid solution for acid washing and purge with nitrogen bubbles, stir evenly, filter, dry, and repeat 4 times. Mix and disperse each component in N-methylpyrrolidone to improve the uniformity of the mixture. Carbon nanotubes and graphene microsheets are uniformly dispersed in NMP to reduce the possibility of agglomeration and break up the already agglomerated groups.

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of a doped zinc oxide coated high-voltage positive electrode material, which comprises the following steps: coating the surface of positive electrode powder with a doped zinc oxide target material through magnetron sputtering, and annealing to obtain the doped zinc oxide coated high-voltage positive electrode material. According to the preparation method provided by the invention, the coating thickness can be effectively and accurately controlled, the precipitation of gas, especially oxygen, is obviously reduced, the electrochemical performance of the lithium ion battery is improved, the stability and cyclicity of the positive electrode material under high voltage are improved, and the side reaction of an interface is reduced.

The invention belongs to the technical field of chlorogenic acid electrochemical sensors, and discloses a portable chlorogenic acid electrochemical sensor and a preparation method thereof, and the method comprises the following steps: S1, preparing a faint yellow powder solid Pd-ZIF-8; s2, weighing a finished product obtained in the step S1, and preparing TA-coated Pd-ZIF-8; s3, weighing a finished product in the step S2 to prepare a PdZn / NP-C dispersion liquid; s4, dropwise adding the dispersion liquid on the surface of a silk-screen printing working electrode to prepare a chlorogenic acid electrochemical sensor; the PdZn / NP coated C / SPE modified working electrode is utilized, and the portable workstation is adopted for testing, so that the problems of poor portability, higher minimum detection limit and narrow detection linear range of the existing detection method are solved.

The utility model relates to battery technology field especially, and particularly relates to a battery module. The battery module of the utility model, including electric core subassembly, electric core subassembly includes multiple electric core, and one heat dissipation board is clamped between every two adjacent electric core, and the heat dissipation board includes main body board and foam layer, and the main body board is sleeved in the outside of foam layer, and the foam layer is used for emitting the heat generated by electric core. The battery module of the utility model can increase the effective surface area of heat dissipation board and air contact through the foam layer of heat dissipation board, improves the uniformity of air distribution in foam layer, improves the heat exchange efficiency and avoids local overheating, thereby improves the overall performance and life consistency of battery module.

The utility model relates to the technical field of lithium battery production, in particular to a pole piece cutter of a winding machine. According to the technical scheme, the pole piece cutter of the winding machine comprises a limiting groove, a protruding block, a cutter frame and a cutter body, the limiting groove is formed in the cutter frame, the protruding block is arranged on the cutter body, the cutter body is installed on the cutter frame in a limiting mode through mutual matching of the protruding block and the limiting groove, blades are arranged on the two sides of the cutter body, and the angle of the blade position of each blade is 89 degrees. According to the utility model, the 45-degree upper cutter is changed into the 89-degree upper cutter, so that the problem of material falling can be solved, and meanwhile, the service life of the cutter is prolonged.

The invention discloses a Co9S8 / CoOOH-coated NF self-supporting electrode and a preparation method thereof, and the method comprises the following steps: growing a Co9S8 precursor on an NF substrate through a hydrothermal reaction, then soaking the Co9S8 precursor in a hydrogen peroxide solution, and preparing the Co9S8 / CoOOH-coated NF self-supporting electrode through a chemical oxidation reconstruction mode. The technological process is simple and rapid, the prepared electrode is large in specific surface area, high in conductivity and multiple in electrochemical active sites, compared with an electrode of a traditional structure, the electrode is simple, efficient and excellent in performance, the defects that a traditional catalyst is complex in preparation technological process and common in performance are effectively overcome, and the application prospect is wide. The problems that in the water oxidation process, OER has a high thermodynamic potential barrier, and high potential is needed to drive overall water decomposition are solved, and the method has great application value in the field of electrochemical catalysis.