885 results about "Conductive composites" patented technology

The invention discloses a preparation method and application of a vertically-oriented boron nitride / epoxy resin heat-conducting composite material under a magnetic field, and belongs to the field of composite materials. The invention aims to solve the problems of high cost, complex process and narrow application range of the existing filler directional arrangement method. The method comprises the following steps: 1, preparing a mixed solution of boron nitride and ferroferric oxide; 2, preparing a boron nitride nanosheet solution with ferroferric oxide attached to the surface; (3) preparing BNNS coated Fe3O4; and 4, preparing the vertically-oriented boron nitride / epoxy resin heat-conducting composite material under the magnetic field. The invention relates to application of a vertically-oriented boron nitride / epoxy resin heat-conducting composite material in electronic packaging under a magnetic field. The heat conductivity of the epoxy resin can be effectively improved, the process is simple and reliable, the efficiency is high, the cost is low, the heat conductivity coefficient is high, and the method can be applied to electronic packaging.

The invention discloses spherical aluminum oxide and a silicone rubber heat conduction composite material thereof, and belongs to the technical field of functional polymer materials. The spherical aluminum oxide is subjected to surface modification through an amphiphilic fluorosilicone heat conduction interface synergist; comprising the following raw materials in parts by weight: 100-200 parts of vinyl silicone oil, 1-6 parts of side hydrogen-containing silicone oil, 1-6 parts of end hydrogen-containing silicone oil, 0.2-2 parts of a platinum catalyst, 0.01-0.1 part of an inhibitor and 2500-6000 parts of amphiphilic fluorine-silicon heat-conducting interface synergistic spherical aluminum oxide powder. Through surface modification of spherical aluminum oxide, the prepared silicone rubber heat-conducting composite material realizes synergistic gain of heat conduction, insulation and flexibility, and can meet the requirements of multiple fields such as power battery pack heat dissipation gaskets, high-frequency circuit packaging and wearable equipment.

The invention relates to the technical field of secondary batteries, in particular to a conductive composite current collector, a preparation method thereof and a battery. The conductive composite current collector comprises a supporting layer, a metal layer arranged on at least one surface of the supporting layer and a PTC (Positive Temperature Coefficient) bottom coating arranged on the surface, far away from the supporting layer, of the metal layer, the supporting layer comprises a polymer base membrane and conductive fibers dispersed in the polymer base membrane; the PTC undercoat layer includes a conductive polymer and a conductive agent dispersed in the conductive polymer. The conductive composite current collector provided by the invention is high in conductivity and excellent in safety, the probability of thermal runaway of the battery at a high temperature is effectively reduced, and the rate capability and the cycle performance of the battery are improved.

The invention relates to the technical field of solar cells, and provides a laminated cell and a manufacturing method thereof, which are at least beneficial to improving the efficiency of the laminated cell. The laminated cell comprises a crystalline silicon bottom cell, a middle layer and a perovskite top cell which are sequentially laminated in a preset direction, the middle layer comprises a conductive composite layer, the conductive composite layer is located on the surface, facing the perovskite top cell, of the crystalline silicon bottom cell, and materials of the conductive composite layer comprise a conductive polymer and a metal dopant; the metal grid layer is embedded into one side, far away from the crystalline silicon bottom battery, of the conductive composite layer, and the conductive composite layer exposes the surface, far away from the conductive composite layer, of the metal grid layer; the barrier layer is located on the side, away from the composite layer, of the metal grid layer and covers the surfaces of the metal grid layer and the conductive composite layer.

The invention discloses a high-thermal-conductivity carbon skeleton resin-based composite material and a preparation method thereof, and belongs to the technical field of thermal conductive composite materials. The preparation method comprises the following steps: firstly, preparing a fibrofelt preform from chopped mesophase pitch-based carbon fibers, and growing carbon nanotubes on the carbon fibers in situ by adopting a chemical vapor deposition process; depositing a layer of pyrolytic carbon through a chemical vapor infiltration process, and jointly connecting the carbon nanotubes / pyrolytic carbon with the chopped carbon fibers in the preform to prepare a porous hybrid network structure; carrying out graphitization treatment on the network structure to obtain a high-thermal-conductivity hybrid carbon skeleton composed of carbon fibers, carbon nanotubes and pyrolytic carbon; and impregnating polymer resin into the hybrid carbon skeleton structure through an impregnation process, and curing to obtain the carbon skeleton resin-based composite material. According to the prepared carbon skeleton resin-based composite material, when the volume fraction of the carbon skeleton accounts for 19.2 vol%, the thermal conductivity in the thickness direction of the composite material reaches 20.9 W / m.K which is 99 times of the thermal conductivity of pure epoxy resin, and the carbon skeleton resin-based composite material can be used as a novel thermal management material.

The invention discloses an acrylate conductive composite pressure-sensitive adhesive and a preparation method thereof. The acrylate conductive composite pressure-sensitive adhesive comprises a raw material A and a raw material B, wherein the raw material A comprises 5-15 parts of acrylate polymer; 0.10 to 1.00 parts of epoxy resin; 1.0 to 10.0 parts of aniline; 0.1 to 1.0 part of an initiator; 1-5 parts of conductive particles; and 0.010 to 0.100 part of an amine curing agent. The acrylate conductive composite pressure-sensitive adhesive disclosed by the invention has excellent conductivity and capacitance sensing performance, and shows excellent capacitance stability and relatively high sensitivity in a pressure cycle test; on the basis of containing the conductive filler, the pressure-sensitive adhesive still has better hardness, adhesion strength and tensile strength, and the conductive filler is well dispersed and combined in a pressure-sensitive adhesive system.

The invention relates to the technical field of preparation of heat-conducting epoxy composite materials, in particular to a graphite / carbon fiber felt / epoxy composite material with a three-dimensional heat-conducting network, which is prepared by forming a graphite / carbon fiber felt three-dimensional heat-conducting network by graphite and a carbon fiber surfacing felt and then compounding the graphite / carbon fiber felt three-dimensional heat-conducting network with an epoxy resin matrix. The preparation method disclosed by the invention has the characteristics of simple and convenient process and easiness in operation mastering, and the obtained composite material shows good convenience in the aspect of processing and is relatively low in cost. Experimental results show that the in-plane heat conductivity of the prepared heat-conducting composite material can reach 0.763 W / mK, and compared with a pure epoxy resin matrix, the heat conductivity of the heat-conducting composite material is improved by about 302%, and the heat-conducting composite material shows excellent heat-conducting property.

The invention discloses a calcining carbon removal-supercritical expansion stripping method for regenerating graphene from graphite of a waste lithium battery, and belongs to the field of lithium battery recovery and nano material preparation. Comprising the following steps: treating the waste lithium battery to obtain waste lithium battery positive and negative electrode mixed powder, and then roasting to obtain battery powder; leaching the battery powder in a nitric acid solution to obtain purified graphite slag; the method comprises the following steps: mixing graphite slag with supercritical gas fluid, treating, quickly releasing pressure to normal pressure, and separating to obtain graphene. According to the method, on the basis of interlayer structure characteristics of the waste graphite negative electrode, organic matters and amorphous carbon are removed through multi-stage calcination, a supercritical N2 / CO2 mixed fluid permeation and pressure relief expansion synergistic stripping technology is combined, and low-damage dissociation is achieved through graphite microcracks. According to the method, physical stripping and liquid nitrogen shock cooling strengthening are coupled, and the obtained graphene sheet layer is high in integrity and few in structural defect and can be directly used for manufacturing conductive composite materials and energy storage devices.

The invention relates to a preparation method of monodisperse spherical alumina powder with uniform granularity. The preparation method comprises the following steps: dissolving and stirring an aluminum source, a precipitator and a dispersing agent in ultrapure water to prepare an aluminum oxide precursor solution; transferring the prepared aluminum oxide precursor solution into a hydrothermal reaction kettle, carrying out heating reaction, after the hydrothermal reaction is finished, naturally cooling to room temperature, alternately and respectively washing with ultrapure water and ethanol, and drying to obtain aluminum oxide precursor powder; and sintering the prepared aluminum oxide precursor powder in a muffle furnace in an air atmosphere to obtain the spherical aluminum oxide powder. The hydrothermal method is adopted to react in a high-temperature and high-pressure environment, so that the reaction uniformity is improved, and the spherical aluminum oxide precursor with uniform granularity and consistent morphology is obtained. The bending strength of the obtained ceramic material is remarkably improved, and the highest bending strength reaches 245MPa. The method has wide application prospects in the fields of heat-conducting composite materials, integrated circuit films, substrate materials, 3D printing materials, precision polishing materials and the like.

The invention relates to the technical field of medical dressings, in particular to a perianal drug dressing of a multi-layer flow guide composite fabric and a preparation method and application of the perianal drug dressing of the multi-layer flow guide composite fabric. The perianal drug dressing is of a four-layer structure, a wet tissue adhesion layer is made of polydopamine modified chitosan / oxidized hyaluronic acid hydrogel, and wet-state adhesion is achieved; the drug sustained-release layer is used for dispersing mesoporous silica loaded with ciprofloxacin hydrochloride / defensin and chitosan microspheres loaded with epidermal growth factors / lonicera japonica into a polycaprolactone fiber membrane to achieve synergistic antibacterial and healing promotion; the directional flow guide layer is of a gradient wettability sandwich structure with a bionic micro-channel, and one-way rapid drainage can be achieved; the high-absorption outer layer is carboxymethyl cellulose / sodium polyacrylate composite sponge, liquid is locked efficiently, the wound surface is kept dry and comfortable, the clinical problem in perianal infection wound treatment can be effectively solved, and the treatment effect and the patient comfort are remarkably improved.

Proposed is an ice maker disposed in a refrigerator to provide ice to an ice bucket. The ice maker may include a tray configured to be filled with water and positioned in the ice maker to freeze the water to make ice, the tray includes a high thermal conductive composite material configured to emit heat in response to an electric current supplied thereto; a tray cap connected to top of the tray to reduce an area of top of the tray so that the water filled in the tray is prevented from overflowing because of the inertia generated by the movement of the tray; a frame assembly connected to the tray; electrodes connected to both sides of the tray, respectively; and a motor connected to the tray to rotate the tray so that the ice is separated from the tray by gravity.

The present invention provides an electrically-conductive composite water-based binder as well as a preparation method therefor and the use thereof. The electrically-conductive composite water-based binder comprises in parts by weight: 90-100 parts of a polyacrylic acid or polyacrylate water-based binder and 0.1-10 parts of an electrically-conductive filler. By means of introducing the electrically-conductive filler into the binder, the electrically-conductive composite water-based binder for lithium ion batteries which has flexibility, low swelling, good binding force and high conductivity is prepared, so that the binder plays a better role in lithium ion batteries.

The invention discloses an MXene-edge graphene oxide heterojunction / PBO fiber multifunctional heat-conducting composite film and a preparation method thereof.The preparation method comprises the steps that firstly, MXene and edge graphene oxide EOG are subjected to nucleophilic substitution and dehydration reaction to prepare an MXene-edge graphene oxide MEOG heterojunction filler, then the filler is added into a PBO fiber dispersion liquid to prepare acid gel, then the acid gel is subjected to heat preservation, and the composite film is prepared. And finally, carrying out hot pressing on the obtained hydrogel, so as to obtain the multifunctional heat-conducting composite film. The heat-conducting composite film provided by the invention comprises the PNFs matrix and the MEOG heterojunction filler, an effective way is provided for phonon transmission by utilizing filler-filler covalent interaction, interface thermal resistance is effectively reduced by filler-matrix hydrogen bonds and pi-pi interaction, and the heat-conducting composite film can be widely applied to the aspects of EMI shielding performance, heat dissipation and the like in electronic equipment.

The utility model provides a novel microwave heating printing head which comprises an outer conductor microwave shielding shell, a microwave input source is arranged on the outer wall of the outer conductor microwave shielding shell in a conducting mode, an outer conductor microwave shielding upper shell is welded to the top of the outer conductor microwave shielding shell, and a coaxial microwave shielding inner conductor is fixedly arranged in the outer conductor microwave shielding upper shell. The coaxial microwave shielding inner conductor is arranged in the outer conductor microwave shielding shell, the coaxial microwave shielding inner conductor and the outer conductor microwave shielding shell define a coaxial resonant cavity, an outer conductor microwave shielding lower shell is welded to the bottom of the outer conductor microwave shielding shell, and a flange plate is installed at the bottom of the outer conductor microwave shielding lower shell. A quartz tube is arranged in the coaxial microwave shielding inner conductor in a penetrating manner and extends to the outlet end of the flange plate, and the length of the coaxial microwave shielding inner conductor arranged in the outer conductor microwave shielding shell is smaller than the height of the coaxial resonant cavity, so that the quartz tube is partially exposed in the coaxial resonant cavity. The conductive composite thermoplastic wire can be rapidly heated within a short time by applying microwaves, and compared with traditional resistance heating, the heating rate is greatly increased.

The invention discloses a flexible heat-conducting composite material with chain-shaped boron nitride and a preparation method, and belongs to the technical field of flexible electronic device heat management materials, the flexible heat-conducting composite material comprises an elastomer matrix and a magnetic functionalized boron nitride filler filled in the elastomer matrix; the elastomer matrix is polydimethylsiloxane; the magnetic functionalized boron nitride filler is prepared by modifying Fe3O4 nanoparticles on the surface of a boron nitride sheet; the boron nitride sheets form a vertically arranged chain structure in the elastomer matrix. The chained vertical arrangement of the boron nitride sheets is realized by prolonging the magnetic field treatment time, the Fe3O4 modification quantity is controlled to optimize the balance between the magnetic responsiveness and the heat-conducting property, a chained heat-conducting network connected end to end is formed, and the thermal seepage threshold value is reduced. According to the flexible composite material and the preparation method thereof, boron nitride sheets are induced to be vertically arranged through a magnetic field to form a chain-shaped heat-conducting network, so that high heat conductivity under low filler loading capacity is realized, and excellent stretchability is kept at the same time.

The present disclosure relates to a highly thermally conductive composite material in which PITCH-based carbon fiber is stitched into a prepreg laminate in which a prepreg including carbon fiber and a thermosetting resin is laminated, and a method for manufacturing the same, and the highly thermally conductive composite material may have excellent through-thickness thermal conductivity, in-plane thermal conductivity and strength.

The invention relates to the technical field of material detection, and discloses an identification analysis and method for recessive degradation of a flexible conductive composite material, and the system comprises a perturbation excitation module, a response collection module, a time sequence feature extraction module, a micro-response trend consistency analysis module, and a state evaluation and early warning module. Multiple periods of small-signal capacitance excitation are applied to the material, pi-pi stacking slippage and interface polarization behaviors in a conductive network are excited, electrical response data are collected to construct a time sequence feature vector, and the deviation degree of the evolution trend is further calculated. And based on the trend deviation index, performing health state scoring and triggering early warning, thereby realizing early recognition and evaluation of material recessive degradation.

A conductive composite stator unit for an electric motor of a vehicle is provided. The stator unit comprises a stator core comprising a body having a first core end and an opposing second core end. The stator unit further comprises a plurality of conductive bars extending from the first core end to the second core end. Each conductive bar comprises a straight portion disposed in one of the slots such that the respective conductive bar is in contact with the stator core. Each conductive bar comprising a central portion and an outer layer disposed thereabout for electrical current to flow therethrough relative to the longitudinal axis, the outer layer comprises at least two copper-graphene (Cu-Gr) layers. Each Cu-Gr layer comprises a copper layer and a graphene layer. The stator unit further comprises an insulator layer disposed about each of the plurality of conductive bars.

The invention relates to the technical field of carbon materials, in particular to a preparation method and application of a heat conduction material and a maleic anhydride grafted graphene material.The preparation method comprises the steps that maleic anhydride and graphene are evenly mixed, and a prefabricated mixture is obtained; uniformly mixing the prefabricated mixture with a peroxy initiator, heating to react for a certain time, cleaning a product, and drying to obtain the maleic anhydride grafted graphene material. According to the preparation method, graphene is grafted with strong polar groups to serve as a connecting bridge between the graphene and a plastic matrix, so that the strong bonding capacity between the graphene and the plastic matrix is obtained, then the toughness, surface smoothness, breaking strength and other mechanical properties of the corresponding plastic heat-conducting composite material are improved, and meanwhile the heat-conducting property of the heat-conducting composite material is remarkably improved. In addition, maleic anhydride and graphene are directly mixed without the help of an organic solvent or a dispersing agent and the like, the process is simple and pollution-free, the environmental protection property is improved, and the complexity of the preparation process is reduced.

The invention relates to the technical field of heaters, in particular to a layered fabric heating battery cell, heating battery cell manufacturing equipment and a control system thereof.The layered fabric heating battery cell comprises warp yarn and weft yarn which are composed of conductive composite fibers, and the warp yarn and the weft yarn are woven into the layered fabric heating battery cell through a loom; the conductive composite fiber is prepared from a conductive material and a fiber matrix material in a laminating manner; according to the layered fabric heating cell provided by the invention, through uniform weaving of the flexible conductive composite fibers, heat is uniformly distributed in the fabric, the problem of local overheating or supercooling is avoided, and due to the fact that the resistance of the conductive composite fibers is relatively low, the electric energy consumption required by heating is reduced.

The invention provides a micro-nano dual-scale synergistically enhanced MXene-based conductive composite film and a preparation method thereof, belongs to the technical field of multifunctional electromagnetic shielding composite materials, and aims to solve the technical problems that MXene is poor in structural stability and low in binding strength with a base material. The preparation method of the composite membrane comprises the following steps: dropwise adding a pyrrole monomer into an MXene solution to prepare an MXene nanosheet internally doped with PPy, and loading the MXene-PPy nanosheet onto a nanofiber membrane to prepare an MXene-based nanofiber conductive membrane; the MOF microspheres and a hydrophobic agent are mixed to prepare a hydrophobic solution, and the MXene-based nanofiber conductive film is soaked in the hydrophobic solution. The micro-nano dual-scale synergistically enhanced MXene-based conductive composite film prepared by the invention has excellent electromagnetic shielding performance, good hydrophobic property, light weight, softness and foldability, and can be flexibly applied to electromagnetic shielding in various complex environments.

Provided herein are compositions of solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase having a positive thermal coefficient of expansion. When the temperature of the composition is below a cutoff temperature Tc, the composition is ionically conductive and may be used as an electrolyte. As the temperature increases above Tc, the organic phase expands and reduces the ionic conductivity of the composition.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a three-dimensional polypyrrole conductive material and a preparation method and application thereof. The preparation method of the three-dimensional polypyrrole conductive material comprises the following steps: (1) preparing a metal copper quantum dot and graphene oxide mixed dispersion liquid; (2) adding an oxidizing agent to obtain a reaction solution; (3) adding a pyrrole monomer, and carrying out a polymerization reaction to obtain a graphene oxide / polypyrrole composite dispersion liquid; and (4) adding a reducing agent to reduce the graphene oxide to obtain the three-dimensional polypyrrole conductive material. After the metal copper quantum dots are loaded on the graphene oxide sheet layer, the graphene oxide sheet layer becomes a structure-oriented core in subsequent polymerization, and finally the stable three-dimensional conductive composite material with graphene as a framework and polypyrrole nanosheets as connection points is formed. Compared with a traditional three-dimensional material formed by overlapping and integrating a two-dimensional graphene sheet layer and a conductive nanowire / nanorod, the three-dimensional material with the structure can form an efficient conductive path more easily under the condition of low filler content.

The purpose of the present invention is therefore to provide a thermally conductive composite tape which is in a form of sheet and, therefore, easy to handle, excellent in strength and electrical insulation, easily stick to an element or heat release-member, and shows strong adhesion to the heat-release member. The present invention provides a thermally conductive composite comprising a first thermally conductive adhesive layer, a reinforcing layer (A) layered on one surface of the first thermally conductive adhesive layer, and a second thermally conductive adhesive layer layered on a free surface of the reinforcing layer (A), wherein the first and second thermally conductive adhesive layers comprise, independently of each other, a silicone composition comprising the following components (a) to (e): 100 parts by mass of (a) linear or branched organopolysiloxane, 1,000 to 3,000 parts by mass of (b) thermally conductive filler, 100 to 500 parts by mass of (c) silicone resin, 1 to 10 parts by mass of (d) organohydrogenpolysiloxane, and 0.5 to 5 parts by mass of (e) organic peroxide.

The invention discloses a longitudinally conductive basalt fiber composite material and a preparation method thereof, and belongs to the technical field of fiber reinforced composite materials, and the preparation method comprises the following steps: treating a desized basalt fiber plain weave fabric in a high-temperature and high-pressure water environment to obtain a hydroxylated basalt fiber plain weave fabric; dispersing the metal nanoparticles in a tannic acid solution to obtain tannic acid modified metal nanoparticles; depositing the tannic acid modified metal nanoparticles on the surface of the hydroxylated basalt fiber plain weave fabric to obtain a metal nanoparticle modified basalt fiber plain weave fabric; dispersing the conductive filler, blending with polycarbonate, and performing hot pressing to prepare a composite sheet; laying, hot-pressing and annealing the metal nanoparticle modified basalt fiber plain weave fabric and the composite sheet to prepare the basalt fiber composite material; by modifying the basalt fiber plain weave fabric, the interface bonding between the basalt fiber plain weave fabric and the matrix is increased, and the conductive composite sheet is introduced, so that the longitudinal conductivity of the basalt fiber composite material is improved.

The invention provides a high-thermal-conductivity PERT floor heating pipe and a preparation method thereof, and belongs to the technical field of floor heating pipes. The PERT floor heating pipe comprises a heat conduction outer layer and an anti-fouling inner layer, the heat conduction outer layer is prepared from, by weight, 200-500 parts of PERT resin, 5-15 parts of heat conduction composite filler, 1-5 parts of plasticizer, 0.5-3.5 parts of antioxidant and 2-5 parts of compatilizer, and the heat conduction composite filler is prepared from graphite nanosheets and surface-treated aluminum nitride; the anti-fouling inner layer is prepared from the following raw materials in parts by weight: 100-200 parts of PERT resin, 3-8 parts of an anti-fouling assistant, 1-2 parts of a plasticizer, 0.5-1.5 parts of an antioxidant and 1-2 parts of a compatilizer, and the anti-fouling assistant is prepared by modifying and halogenating carbon nanotubes. The PERT floor heating pipe prepared by the invention not only has excellent heat-conducting property and mechanical property, but also is antibacterial and anti-scaling, and can keep good performance in a long-term use process.

The invention belongs to the technical field of composite materials and sensors, and particularly relates to a preparation method and application of an ultrahigh-tensile conductive hydrogel material. The preparation method comprises the following steps: adding acrylamide (AM), N, N '-methylene bisacrylamide (MBA), ammonium persulfate (APS) and an MXene organic dispersion liquid into a sodium carboxymethyl cellulose (CMC-Na) solution at room temperature, and uniformly stirring to obtain a prefabricated liquid; transferring into a mold, and carrying out polymerization reaction in a drying oven for 2-6 hours to prepare CMC-Na / PAM / MXene conductive hydrogel of an interpenetrating network; the prepared CMC-Na / PAM / MXene conductive hydrogel of the interpenetrating network is soaked in ethylene glycol aqueous solutions with different concentrations, and after solvent replacement, the ultrahigh-tensile conductive hydrogel is prepared. The MPAE conductive composite hydrogel provided by the invention can accurately monitor tiny motion information of a human body and has good sensing performance.

Provided herein are ionically conductive solid-state compositions that include ionically conductive inorganic particles in a matrix of an organic material. The resulting composite material has high ionic conductivity and mechanical properties that facilitate processing. In particular embodiments, the ionically conductive solid-state compositions are compliant and may be cast as films. In some embodiments of the present invention, solid-state electrolytes including the ionically conductive solid-state compositions are provided. In some embodiments of the present invention, electrodes including the ionically conductive solid-state compositions are provided. The present invention further includes embodiments that are directed to methods of manufacturing the ionically conductive solid-state compositions and batteries incorporating the ionically conductive solid-state compositions.

The invention belongs to the technical field of battery preparation, and particularly relates to a secondary battery and electric equipment. The secondary battery comprises a negative pole piece, wherein the negative pole piece comprises a negative current collector and a negative active material layer arranged on at least one surface of the negative current collector; the negative active material layer comprises a main body region and a thinned region arranged at the edge of the main body region, and the thickness of the thinned region is smaller than that of the main body region; the negative pole piece further comprises an ionic conductive composite material, the ionic conductive composite material makes contact with the thinned area, and the ionic conductive composite material comprises ionic liquid and at least one of a conductive polymer and a sodium ion manganese-based layered oxide. According to the invention, the ionic conductive composite material is added into the negative electrode plate and is in contact with the thinned region, so that the effect of protecting the electrode plate is achieved, the sodium ion conductivity and capacity of the thinned region can be improved, polarization and negative electrode side potential drop in the circulation process can be slowed down, sodium precipitation and side reaction are inhibited, the loss of active sodium is reduced, and the service life of the battery is prolonged.

The invention discloses a high-energy-storage flexible wood fiber board as well as a preparation method and application thereof, and belongs to the field of wood functional materials. Non-isocyanate polyurethane formed by reaction of epoxidized soybean oil cyclic carbonate and soybean protein is dispersed in a polyacrylamide chain; external stress is transferred and energy is dissipated under the hydrogen-bond interaction between a polyacrylamide chain and non-isocyanate polyurethane, so that the toughness of the adhesive is improved; meanwhile, a three-dimensional network structure formed after porous wood fiber materials are mixed is utilized, a conductive material is introduced, conductive composite wood fibers are prepared, a multi-dimension-multi-scale layering directional composite assembling technology of the wood fiber materials and a novel conductive adhesive is adopted, directional transmission of charges from polymers to wood pore channels is achieved, and the purpose of conducting the conductive composite wood fibers is achieved. The flexible wood fiber board has the characteristic of intrinsic high energy storage, the problem that traditional furniture has a single carrier function is solved, and high-value utilization of wood materials is promoted.