13 results about "Carbon plastic" patented technology

The invention relates to the technical field of electrochemical energy storage, in particular to a carbon-plastic composite bipolar plate, a preparation method and a flow battery, the carbon-plastic composite bipolar plate comprises a conductive copper material layer, a fine powder dry blank layer, a transition powder layer and a coarse powder dry blank layer, each of the fine powder dry blank and the coarse powder dry blank comprises 60-90% by mass of a conductive carbon material and 10-40% by mass of a resin material; the conductive copper material is used as the middle layer to improve the conductivity and mechanical strength of the bipolar plate; the coarse powder blank is few in particle gap and good in compactness after being subjected to hot pressing, and can greatly block infiltration of electrolyte as a surface layer material, so that the corrosion resistance of the bipolar plate is remarkably improved; the interface contact area is large and the mechanical property is good after fine powder blank making and hot pressing, the conductivity and the mechanical strength of the bipolar plate can be remarkably improved by wrapping the conductive copper layer, and internal swelling is not prone to occurring; the transition powder can promote interlayer cross-linking of coarse and fine powder, and interface resistance is reduced. The problems that a carbon-plastic composite bipolar plate is poor in conductivity and easy to swell inside and a flow battery is low in assembling and pressing mechanical strength are solved.

1. The name of the design product: multifunctional modular force control floating belt sander. 2. The use of the design product: for grinding and polishing various materials such as steel, copper, aluminum, titanium magnesium, carbon, plastic, wood, ceramic, fiber, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses a zinc-bromine flow battery carbon-plastic bipolar plate as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage. The method comprises the following steps: dispersing a nitrogen-doped hollow carbon nanobox, spraying the nitrogen-doped hollow carbon nanobox on the positive electrode side of a carbon-plastic bipolar plate, and drying to obtain a positive electrode carbon-plastic bipolar plate modified by the nitrogen-doped hollow carbon nanobox; and dispersing the boron-nitrogen co-doped carbon, spraying the boron-nitrogen co-doped carbon on the negative electrode side of the pretreated carbon-plastic bipolar plate, and drying again to obtain the boron-nitrogen co-doped carbon modified negative electrode carbon-plastic bipolar plate. On the positive electrode side, the nitrogen-doped hollow carbon nanobox catalyzes bromine reaction through nitrogen doping, and the overpotential is reduced; the hollow structure adsorbs bromine species and inhibits bromine permeation by utilizing the charge effect, so that self-discharge is reduced. On the negative electrode side, boron-nitrogen co-doped carbon utilizes B-N zinc-loving sites to guide zinc to be uniformly and compactly deposited, and dendritic crystals are inhibited; and hydrogen evolution is inhibited through charge regulation and control. The two synergistically improve the bromine resistance, reaction kinetics and dendritic crystal inhibition capability of the carbon-plastic bipolar plate.

The utility model discloses a carbon plastic soundproof door which comprises a first carbon plastic plate layer, a first inorganic foaming layer, a sound absorption cotton layer, a second inorganic foaming layer and a second carbon plastic plate layer which are sequentially arranged, and the density of the first carbon plastic plate layer, the density of the first inorganic foaming layer and the density of the sound absorption cotton layer are different. The density of the first carbon-plastic plate layer is the same as that of the second carbon-plastic plate layer, and the density of the first inorganic foaming layer is the same as that of the second inorganic foaming layer; according to the utility model, the plurality of plate layers with different densities are arranged, the material with high density can reflect sound waves easily, the porous material with low density can absorb the sound waves easily, and the plurality of layers of materials with different densities are alternately arranged, so that the sound insulation board can adapt to sound with different frequency bands, and the sound insulation effect is better.

The invention discloses a carbon-plastic bipolar plate prepared from a graphite negative electrode of a decommissioned lithium ion battery and a preparation method of the carbon-plastic bipolar plate, and belongs to the technical field of flow batteries, and the method comprises the following steps: discharging the decommissioned lithium ion battery, separating out a graphite negative electrode plate, dissolving a binder on the graphite negative electrode plate, washing with water, drying, crushing and screening to obtain decommissioned graphite particles; carrying out high-temperature calcination and acid leaching treatment on the retired graphite particles, filtering, washing to be neutral, and drying to obtain regenerated graphite particles; mixing the graphite particles with a surface modifier to prepare surface-modified retired graphite particles; mixing with a nano conductive filler to prepare a composite conductive filler; and mixing the composite conductive filler, a resin matrix and an additive, and carrying out compression molding or extrusion molding to obtain the carbon-plastic bipolar plate. The graphite negative electrode has high conductivity, high mechanical strength and excellent corrosion resistance, can meet the use requirements of a flow battery, remarkably reduces the production cost of a bipolar plate, and realizes resource cyclic utilization of the graphite negative electrode of the retired lithium ion battery.

The invention relates to the technical field of flow batteries, in particular to a flow battery low contact resistance carbon plastic bipolar plate layered compression molding method which comprises the following steps: S1, selecting preparation raw materials which comprise a conductive substance and resin; s2, dividing the bipolar plate into 2n-1 layers along the thickness direction of the bipolar plate; s3, the preparation raw materials are adopted, layered mold pressing is conducted on each layer, a layered plate is prepared, the resin content is gradually increased layer by layer from the first layer to the nth layer, and the resin content is gradually increased layer by layer from the (2n-1) th layer to the nth layer; and S4, stacking the layered plates in sequence, and carrying out pressing and mold pressing at the softening temperature of the resin to obtain the formed bipolar plate. According to the bipolar plate, the mechanical strength of the whole bipolar plate is guaranteed through the high-resin-content layer in the middle layer, meanwhile, the contact resistance of the bipolar plate is greatly reduced through the high-graphite-content layers on the two sides, and therefore the mechanical performance and the conductivity of the bipolar plate are compatible.

The utility model belongs to the technical field of plastic processing equipment, and particularly relates to a low-carbon plastic pearl wool lining box injection molding machine which comprises a working table, an injection mechanism and a mold closing mechanism are connected in a matched mode and arranged at the top of the working table, and the injection molding machine is characterized in that a feeding hopper is arranged at a feeding port in the top of the injection mechanism; a uniform distribution hopper plate is arranged in the feeding hopper, a partition plate is arranged in the feeding hopper and located below the uniform distribution hopper plate, a heating cavity is formed between the uniform distribution hopper plate and the partition plate, a plurality of snakelike discharging pipes are arranged at the bottom of the uniform distribution hopper plate in a penetrating mode, and the bottom ends of the snakelike discharging pipes extend to the position below the partition plate. Heating plates are arranged on the lower surfaces of the inclined parts of the multiple snakelike discharging pipes and used for heating materials falling along the inner walls of the snakelike discharging pipes; the raw material drying device is good in raw material drying effect, and water in the pearl wool raw material is prevented from forming steam at the high injection molding temperature to affect the product quality.

This invention discloses a carbon-plastic bipolar plate for a zinc-bromine flow battery, its preparation method, and its application, belonging to the field of electrochemical energy storage technology. The method includes: dispersing nitrogen-doped hollow carbon nanotubes and spraying them onto the positive electrode side of a carbon-plastic bipolar plate; after drying, a nitrogen-doped hollow carbon nanotube-modified positive electrode carbon-plastic bipolar plate is obtained; dispersing boron-nitrogen co-doped carbon and spraying it onto the negative electrode side of a pretreated carbon-plastic bipolar plate, after drying again, a boron-nitrogen co-doped carbon-plastic negative electrode carbon-plastic bipolar plate is obtained. On the positive electrode side, the nitrogen-doped hollow carbon nanotubes catalyze the bromine reaction through nitrogen doping, reducing the overpotential; the hollow structure adsorbs bromine species and uses charge action to inhibit bromine permeation, reducing self-discharge. On the negative electrode side, the boron-nitrogen co-doped carbon uses B-N zinc-loving sites to guide uniform and dense zinc deposition, inhibiting dendrite formation; and inhibits hydrogen evolution through charge regulation. Both methods synergistically improve the bromine barrier performance, reaction kinetics, and dendrite suppression ability of the carbon-plastic bipolar plate.

The invention relates to the technical field of flow batteries, in particular to a preparation method of a high-conductivity multi-layer extruded carbon-plastic composite bipolar plate, which comprises the following steps: S1, selecting preparation raw materials including a conductive substance and resin; s2, dividing the bipolar plate into 2n-1 layers along the thickness direction of the bipolar plate; s3, preparing raw materials used by the layered plate are selected, the resin content is gradually increased layer by layer from the first layer to the nth layer, and the resin content is gradually increased layer by layer from the (2n-1) th layer to the nth layer; s4, sequentially putting the preparation raw materials corresponding to the layered plate into 2n-1 extruders to obtain an extruded layered plate; s5, forming the extruded layered plate through a double-roller calender unit, enabling the formed layered plate to pass through a withdrawal and straightening device to obtain a flat and straight layered plate, and spraying a treating fluid containing conductive filler on an interlayer interface of the flat and straight layered plate; and S6, enabling the layered plate sprayed with the treatment liquid to pass through a final calender roll to obtain the bipolar plate. According to the invention, high efficiency, high stability and long service life of the bipolar plate in a practical application scene are ensured from multiple aspects.

The present application relates to a method for preparing a bipolar plate for a zinc-bromine flow battery, a bipolar plate and a zinc-bromine flow battery. The preparation method comprises the following steps: obtaining polyethylene, carbon black and graphite, mixing them in a preset ratio to obtain a mixed material; treating the mixed material by at least one of hot pressing or extrusion to prepare a carbon plastic sheet; obtaining activated carbon fiber, mixing the carbon plastic sheet with the carbon plastic sheet at a temperature of 160°C and a pressure of 20 kgf / cm 2 The bipolar plates are made by thermoplastic treatment. Activated carbon fibers are less likely to absorb excessive bromine, preventing the reaction of excess bromine with zinc on the negative plate to produce zinc and bromide ions, which can cause self-discharge during charging and reduce the impact on battery efficiency.

The utility model discloses a low-carbon plastic floating bridge which comprises a plastic floating bridge body, the plastic floating bridge body comprises a first plastic floating bridge plate and a second plastic floating bridge plate, and the first plastic floating bridge plate and the second plastic floating bridge plate are each provided with a first side edge, a second side edge, a third side edge and a fourth side edge. A first fixing through hole, a second fixing through hole, a third fixing through hole, a fourth fixing through hole, a fifth fixing through hole, a sixth fixing through hole, a seventh fixing through hole and an eighth fixing through hole are formed in the first side edge, the second side edge, the third side edge and the fourth side edge correspondingly. The first fixing through hole, the second fixing through hole, the third fixing through hole, the fourth fixing through hole, the fifth fixing through hole, the sixth fixing through hole, the seventh fixing through hole and the eighth fixing through hole are formed in the four side edges at equal intervals. The plastic floating bridge has the advantages that the stability of vertical swinging of the floating bridge is improved, and the matching effect between the plastic floating bridges is improved.