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58results about How to "Good mechanical flexibility" patented technology
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Implantable antenna
InactiveUS20090149918A1Enhanced tissue ingrowthIncrease signal strengthSpinal electrodesImplantable neurostimulatorsImplanted deviceEngineering
An antenna implantable through minimally invasive techniques, preferably comprising a coil with conductive probes is provided. The antenna is preferably superelastic nickel-titanium having an insulative coating. The antenna may conduct a signal originating from a device external to the body of the implantee, or from another implanted device connected to the antenna depending on whether the antenna is employed for sending, receiving, or transceiving signals. Signals may contain data, operational commands, and may be used to transfer power. The implantable antenna may be connected to another implanted device, such as a blood pressure monitor, or may be implanted as a stand-alone device for purposes such as stimulating tissue.
Owner:CORDIS CORP
Metal organic frame/conductive polymer composite material and preparation and application thereof
ActiveCN108335919AIncrease capacityIncrease capacitanceHybrid capacitor electrodesHybrid/EDL manufactureCapacitanceConductive polymer composite
The invention belongs to the technical field of flexible energy storage devices, and particularly relates to a metal organic frame / conductive polymer composite material, a preparation method thereof and application in knittable, flexible and fibroid supercapacitors. Carbon fiber bundles are adopted as an electrode substrate, the electro-deposition metal organic frame / conductive polymer composite material is adopted as an electrode active material, polyvinyl alcohol-electrolyte gel is adopted as solid electrolyte and a membrane, and the prepared fibroid supercapacitor has the excellent capacitive performance, good mechanical flexibility, wide working temperature range and stable long-term service life, capable of being directly knitted and integrated into textile easily, and capable of providing an efficient energy storage system for wearable mobile equipment.
Owner:HUAZHONG UNIV OF SCI & TECH
PET-graphene-AgNW (polyethylene terephthalate-graphene-Ag nanowire) composite transparent conducting film and preparation method thereof
InactiveCN105869719AEvenly dispersedGood mechanical flexibilityConductive layers on insulating-supportsSolid-state devicesPolyethylene terephthalate glycolComposite film
The invention provides a preparation method of a PET-graphene-AgNW (polyethylene terephthalate-graphene-Ag nanowire) composite transparent conducting film. The preparation method comprises steps as follows: cutting and cleaning of a graphene substrate, preparation of an AgNW solution, vacuum filtration of an AgNW film, preforming, removing of a filter film and nitrogen blow-drying. The invention further provides the PET-graphene-AgNW composite transparent conducting film prepared with the method. According to the preparation method, the AgNWs and graphene are subjected to film forming independently and then are composited together, wherein AgNW film forming adopts vacuum filtration, and graphene adopts CVD (chemical vapor deposition) growth, so that the prepared composite film has the advantages of uniformly dispersed AgNWs, controllable thickness, good mechanical flexibility, low square resistance, high optical transmittance and lower surface roughness and can meet the requirement of device applications; according to the composite transparent film, the lower square resistance and the higher optical transmittance can be realized only through composition of a few AgNWs, and the square resistance of the PET-graphene-AgNW composite transparent conducting film is lower than that of a pure silver AgNW film under the same concentration by 20%-40%.
Owner:CHONGQING UNIV
Ultra-thin silver base thin film, multi-layer composite transparent electric conduction thin film and preparing method and application thereof
ActiveCN107254664AGood mechanical flexibilityReduce roughnessVacuum evaporation coatingSputtering coatingElectrically conductiveMaterials science
The invention provides an ultra-thin silver base thin film, a multi-layer composite transparent electric conduction thin film and a preparing method and application thereof. The ultra-thin sliver base thin film is of a double-layer structure and comprises an Ag (O) layer and a continuous ultra-thin Ag layer which is located on and makes contact with the Ag (O) layer; the thickness of the Ag (O) layer is 0.5 nm-5 nm, and the thickness of the Ag layer is 2 nm-10 nm; and the oxygen doping concentration x is greater than or equal to 1% and less than or equal to 24% in the Ag (O) layer. The multi-layer composite transparent electric conduction thin film comprises a base and at least one Ag (O) / Ag double-layer which is located on the base. According to the ultra-thin silver base thin film and the multi-layer composite transparent electric conduction thin film based on the ultra-thin silver base thin film, excessive dependence of the thin film overall electric conduction on the oxygen doping concentration of the Ag (O) layer is weakened to a certain extent, the technical problems of difficult precise controlling over the oxygen doping concentration of the Ag (O) layer and the like are solved, the transparent electric conduction thin film with better mechanical flexibility and composite photoelectricity performance is obtained, preparing in a room temperature condition is achieved, cost is low, and the application prospects are broad.
Owner:HEBEI UNIVERSITY
Flexible transferable surface-enhanced Raman detection substrate as well as preparation method and application thereof
InactiveCN109239051AHigh sensitivityEasy to adjustMaterial nanotechnologyTransportation and packagingPorous substratePolystyrene
The invention provides a flexible transferable surface-enhanced Raman detection substrate as well as a preparation method and application thereof. The preparation method comprises the following steps:modifying thiolated polystyrene on noble metal nanoparticles by ligand exchange; and then assembling an ordered substrate-free self-supporting two-dimensional noble metal nanometer superlattice filmon a porous substrate by a gas-liquid interface self-assembly method to obtain a flexible transferable SERS (Surface Enhanced Raman Scattering) substrate. The substrate has an adjustable micro-structure and macro-optical performance, and has the characteristics of high detection sensitivity and high signal repeatability due to uniform magnetic field enhancement hot spots generated by the couplingbetween nanoparticles on a two-dimensional plane. A transfer technology based on PDMS as an elastic transparent carrier is adopted to transfer the SERS substrate to a complex morphology surface, so that instant high-sensitivity molecular detection can be performed on the complex morphology surface in a multi-phase environment, thereby solving the problem that a traditional SERS substrate is limited to a rigid or opaque support substrate.
Owner:SOUTHEAST UNIV
Thin-film transistor and method for manufacturing the same
ActiveUS20060177972A1Low cost processingImprove impact resistanceTransistorSolid-state devicesOrganic semiconductorInorganic materials
A thin-film transistor (100) of the present invention comprises a semiconductor layer (4), and a source region (5), a drain region (6), and a gate region (2) which formed on the semiconductor layer to be separated from each other. Said semiconductor layer is made of composite material, and said composite material comprises organic semiconductive material and at least one kind of inorganic material particles dispersed inside the organic semiconductive material.
Owner:PANASONIC CORP
Paper current collector, method for manufacturing same, and electrochemical device comprising paper current collector
InactiveCN110050369AEnsure electrical characteristicsIncrease energy densityFinal product manufactureElectrode carriers/collectorsFiberElectricity
Owner:大韩民国(山林厅国立山林科学院长)
Planar flexible energy storage and color change integrated device and preparation method thereof
PendingCN113655668AModerate viscosityExcellent dispersion stabilityNon-linear opticsPolyethylene terephthalate glycolComputer printing
The invention relates to a planar flexible integrated device, in particular to a planar flexible energy storage and color change integrated device and a preparation method thereof. The method comprises the steps of: obtaining High-performance ink with proper viscosity and stable and excellent dispersity by dispersing an electrochromic material by using a high-molecular polymer, and printing the high-performance ink on flexible substrates such as PET (Polyethylene Terephthalate) and the like by using a microelectronic printer to obtain a patterned electrochromic layer; preparing conductive electrode ink by using a similar method, and precisely printing a conductive electrode layer on the upper part of the electrochromic layer for the second time; and finally, printing a gel electrolyte on the upper part of the electrochromic layer pattern, and assembling the two parts of the electrochromic layer to obtain a complete planar flexible energy storage and color change integrated device. The mechanical flexibility, the optical performance and the electrochemical performance of the planar flexible capacitive energy storage electrochromic integrated device are comprehensively improved through application of a microelectronic printing technology, preparation of high-performance ink, screening of a flexible base material, an electrochromic material and a conductive electrode material and the like.
Owner:ZHEJIANG SCI TECH UNIV SHAOXING KEQIAO RES INST CO LTD
Driving structure of travelling wave micro motor
ActiveCN108306548AImprove yieldEasy to integrate applicationsPiezoelectric/electrostriction/magnetostriction machinesEngineeringMicro motor
The invention discloses a driving structure of a travelling wave micro motor. The driving structure comprises an annular support frame and a circular annular body, wherein the circular annular body isarranged in the annular support frame, the annular support frame and the circular annular body are connected by a plurality of support beams, a first electrode layer and a matrix are arranged on thecircular annular body from top to bottom, the first electrode layer comprises a plurality of fan-shaped electrodes which are arranged in annular way, an interval is reserved between two adjacent fan-shaped electrodes, the external diameter of each fan-shaped electrode is smaller than the external diameter of the matrix, a plurality of grooves are formed in a side wall of the matrix, openings of the grooves are arranged in central lines of the fan-shaped electrodes and an interface line of two adjacent fan-shaped electrodes, and the support beams are uniformly distributed in the grooves. In thedriving structure of the travelling wave micro motor, the vibration energy of the driving structure is limited in frame energy by the support beams and the annular support frame, the support beams are fixed at a node of the travelling wave micro motor, the vibration energy is further prevented from diffusing outwards, the energy loss is substantially reduced, and the Q value of the driving structure is increased.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
Oxide type ceramic composite nanofiber solid electrolyte and electrostatic spinning preparation method thereof
PendingCN111910283AGood mechanical flexibilityMeet needsSecondary cellsElectro-spinningPolyvinylidene fluoridePolymer electrolytes
The invention relates to a preparation method of an energy storage system device material, in particular to an oxide type ceramic composite nanofiber solid electrolyte and an electrostatic spinning preparation method thereof, and belongs to the technical field of energy storage system device material preparation. The preparation method comprises the following steps: firstly, preparing oxide type ceramic nanoparticles; then, dispersing the oxide type ceramic nanoparticles into a polyvinylidene fluoride solution to prepare a spinning precursor solution, and performing electrostatic spinning to obtain oxide type ceramic nanofibers; and finally, pouring the polymer electrolyte of a polymer conductive lithium salt system to obtain the oxide type ceramic composite nanofiber solid electrolyte. The material can be applied to a flexible solid-state lithium battery and has good electrochemical performance and mechanical flexibility.
Owner:ZHEJIANG SCI-TECH UNIV
Flexible substrate-GO-metal nanowire composite transparent conductive thin film and preparation method thereof
InactiveCN108806885ACoated evenlyUniform adhesionConductive layers on insulating-supportsCable/conductor manufactureSurface roughnessOptical transmittance
The invention provides a preparation method of a flexible substrate-GO-metal nanowire composite transparent conductive thin film. The preparation method comprises the steps of quartz glass substrate surface processing, metal nanowire solution preparation, vacuum filtering metal nanowire film, lamination, filtering film removal, GO processing, flexible substrate material solution preparation, flexible substrate film formation and quartz glass substrate stripping. The invention also provides the flexible substrate-GO-metal nanowire composite transparent conductive thin film prepared by the method. The composite transparent conductive thin film prepared by the method has the advantages of low surface peak valley roughness and surface average roughness, good conductivity, high optical transmittance, good mechanical flexibility and good thermal stability, the metal nanowire is firmly attached onto the flexible substrate, the application demand of a device can be achieved, particularly, therequirement of a flexible thin film electronic device on electrode surface roughness can be met, and the reliability and the stability of the metal nanowire electrode in application of the thin film electronic device are improved.
Owner:CHONGQING UNIV
Waste silk-based flexible carbon nanofiber membrane and preparation method thereof
InactiveCN111748906AEasy to controlThe process is easy to realizeMonocomponent fibroin artificial filamentElectro-spinningFiberPolymer science
The invention relates to a preparation method of a novel carbon-based nano material, in particular to a waste silk-based flexible carbon nanofiber membrane and a preparation method thereof, and belongs to the technical field of carbon-based nano materials. The preparation method comprises the following steps of: firstly, pretreating waste silk, including degumming-refining, dissolving, dialyzing,freeze-drying and the like, to obtain dried silk fibroin; secondly, mixing and dissolving the silk fibroin and transition metal salt into formic acid to obtain a spinning solution, and preparing a silk fibroin-based nanofiber membrane through electrostatic spinning or centrifugal spinning; and finally, obtaining the flexible carbon nanofiber membrane through pre-oxidation and carbonization processes. The material has high electrical conductivity and mechanical flexibility, and can be applied to the fields of energy storage, catalysis, sensing and the like.
Owner:ZHEJIANG SCI-TECH UNIV
Flexible field electron emission cathode material based on three-dimensional VS2/Zno composite nano-structure and preparation method thereof
InactiveCN103762133ASolve the problem of launch stabilityReduce manufacturing costMaterial nanotechnologyDischarge tube/lamp detailsNano structuringPolyethylene terephthalate glycol
The invention discloses a three-dimensional VS2 / Zno composite nano-structure and a preparation method. The three-dimensional VS2 / Zno composite nano-structure comprises VS2 nano-sheet and ZnO nano-particles, the VS2 nano-sheet serves as a framework, the ZnO nano-particles are evenly distributed on the surface and the edge of the VS2 nano-sheet to form the VS2 / Zno composite nano-structure. The invention further provides a flexible reinforced PET (polyethylene terephthalate) substrate field electron emission cathode material based on three-dimensional VS2 / Zno composite nano-structure and a preparation method. The preparation method has the advantages of being low in cost, simple in preparation condition, high in complexity and the like. In addition, impurities are less. The three-dimensional VS2 / Zno composite nano-structure and the field electron emission cathode material are high in crystallinity, stable in structure and large in specific area, the edge is ultrathin, and excellent flexible field electron emission performance is achieved.
Owner:EAST CHINA NORMAL UNIV
Electromagnetic shielding film with high absorption performance and preparation method thereof
PendingCN108215385AImprove absorbing performanceImprove shielding effectLamination ancillary operationsMagnetic/electric field screeningFiberHigh absorption
The invention discloses an electromagnetic shielding film with high absorption performance and a preparation method thereof. The electromagnetic shielding film provided by the invention is provided with a multi-layer structure, and comprises insulated bonding layers and chopped carbon fiber felt wave-absorbing layers, wherein any two adjacent chopped carbon fiber felt wave-absorbing layers are bonded into a whole through one insulated bonding layer; and the outermost chopped carbon fiber felt wave-absorbing layer adopts one insulated bonding layer as a protective film. The chopped carbon fiberfelt wave-absorbing layers have relatively low shielding performance and excellent wave-absorbing performance. The chopped carbon fiber felt wave-absorbing layers and the insulated bonding layer aresuperposed to perform hot-pressing forming, so that shielding performance of the material is improved. The electromagnetic shielding film has the advantages of being high in mechanical strength, goodin softness, small in density, high in electromagnetic shielding property, high in wave-absorbing performance, and the like, and has a wide application prospect in the important fields such as electromagnetic radiation protective systems and antiradar systems.
Owner:SOUTH CHINA UNIV OF TECH
Two-dimensional nanosheet-polymer flexible composite film and preparation method thereof
ActiveCN109762278AHas the characteristics of inorganic perovskite structureImprove polarization characteristicsEpoxyComposite film
The invention provides a two-dimensional nanosheet-polymer flexible composite film and a preparation method thereof. The two-dimensional nanosheet-polymer flexible composite film is prepared from a two-dimensional nanosheet and a polymer matrix, the two-dimensional nanosheet is prepared from any one or more materials in a (Ca, Sr)2(Nb, Ta)3O10 system with a perovskite structure, and the polymer isprepared from any one or more materials of polyvinylidene fluoride, polyvinylidene fluoride-trifluoroethylene, polyvinylidene fluoride-hexafluoropropylene, epoxy resin, polypropylene and polyimide; and the preparation method comprises the preparation process that a KCa2Nb3O10 material is synthesized in a high-temperature sintering mode; an HCa2Nb3O10.1.5H2O material is synthesized through a proton-exchange reaction; the HCa2Nb3O10.1.5H2O material is stripped into the two-dimensional nanosheet; and then a flexible composite film product is prepared through a tape casting method. By adding thetwo-dimensional nanosheet into the polymer matrix, a polymer matrix composite with excellent performance is obtained at the low inorganic matter additive amount, thus the good flexibility of the polymer matrix of the polymer matrix composite is retained, and the breakdown field strength of the composite film is improved.
Owner:WUHAN UNIV OF TECH
Flexible nano-porous/amorphous composite material for hydrogen production by electrolyzing water and preparation method thereof
InactiveCN108707922AGood mechanical flexibilityEasy to manufactureElectrode shape/formsAmorphous matrixHydrogen evolution
The invention provides a flexible nano-porous / amorphous composite material for hydrogen production by electrolyzing water and a preparation method thereof. A Ni-Zr-Ti (Pt, Au, Pd) amorphous alloy wire or a thin strip is used as a precursor, and Zr and Ti elements are selectively removed through surface dealloying, so that the composite material is prepared. The nano composite material has a double-continuous nano porous structure with a high specific surface area and an amorphous matrix layer, and meanwhile has good mechanical flexibility and can be bent at any angle of 180 degrees. The composite material is directly used for electrolyzing a hydrogen evolution electrode, and shows excellent hydrogen evolution electrocatalytic activity, and the performance is obviously superior to 10 wt%of commercial Pt / C catalysts. The flexible nano-porous / amorphous composite material not only can solve the problem that an existing block nano porous electrocatalytic material is generally brittle, but also can overcome the defect that because the specific surface area of a traditional amorphous block body and a strip is not high, the catalytic activity is insufficient, and has a great applicationprospect in the aspect of high-performance electrolytic water hydrogen production electrode devices.
Owner:UNIV OF SCI & TECH BEIJING
Optical frequency converter of silicon nitride micro-ring integrated gallium selenide film
InactiveCN113075831AHigh second-order nonlinear coefficientImprove conversion efficiencyNon-linear opticsConvertersOptical communication
The invention relates to an optical frequency converter of a silicon nitride micro-ring integrated gallium selenide film, which comprises a double-straight- waveguide type silicon nitride micro-ring cavity and a gallium selenide film, and is characterized in that the gallium selenide film covers the upper surface of the double-straight-waveguide type silicon nitride micro-ring cavity. Pump light enters the silicon nitride micro-ring cavity from an upper straight waveguide through side edge coupling. The silicon nitride micro-ring cavity has an amplification effect on a pump light field, so that a very strong evanescent light field is formed on the surface of the micro-ring. The evanescent light field interacts with the gallium selenide film with an ultrahigh second-order nonlinear coefficient to efficiently generate frequency doubling light or sum frequency light. The generated frequency doubling light or sum frequency light is coupled to a lower straight waveguide through the silicon nitride micro-ring cavity and output. The optical frequency converter which is simple in preparation process, low in cost, compact in structure and high in conversion efficiency is formed, and is expected to be applied to the fields of optical communication, photonic integrated chips and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Preparation method of micron silicon-carbon composite negative electrode material with long cycle life
ActiveCN111244417AIncrease capacityGood mechanical flexibilitySiliconElectrode thermal treatmentCarbon compositesGraphite
The invention belongs to the technical field of battery materials, and particularly relates to a preparation method of a micron silicon-carbon composite negative electrode material with long cycle life, the composite negative electrode material prepared by the method has a tough multistage buffer structure, micron silicon particles crushed in a cycle process can be stabilized internally, and a fresh surface exposed by cracking is protected; and the graphene compact network with high strength and high modulus on the outer layer can maintain the structural integrity of the internal silicon-carbon active particles in the compaction process to the greatest extent. Meanwhile, internal silicon-carbon active particles (SiMP(at)C) are tightly connected into a mechanical and electrical whole through a graphene network with a compactly contracted outer layer, so that the electrode structure is reinforced and toughened, and effective mechanical buffering and continuous and rapid electron transferare realized in the lithium de-intercalation and intercalation process.
Owner:TIANJIN UNIV
Method for electrolytic deposition of WO3 thin film on non-continuous conducting film
ActiveCN109402561ALow costLarge optical modulationElectrolytic inorganic material coatingVacuum evaporation coatingElectrospinningHigh transmittance
The invention discloses a method for electrolytic deposition of a WO3 thin film on a non-continuous conducting film, and relates to the technology of functional materials. A magnetron sputtering technology is utilized for sputtering WO3 on the surface of a PET thin film to obtain a WO3 / PET film; a PVA nano fiber net is obtained through electrostatic spinning, metallic silver coating is formed on the surface of the PVA nano fiber net, a PVA template is removed to obtain a nano groove conducting grid, and then the conducting grid is transferred to the obtained WO3 / PET film to obtain a compound thin film; a WO3 top-level layer is subjected to magnetron sputtering on the compound thin film to form a transparent conducting substrate of a sandwich structure; an electrochemical deposition methodis adopted for preparing a WO3 color changing layer on the transparent conducting substrate of the sandwich structure, and the electrolytic deposition of the WO3 thin film on the non-continuous conducting film is completed. According to the method, the cost is reduced, and the high-transmittance non-continuous conducting film is applied to the electrochemical deposition method.
Owner:XIAMEN UNIV +1
A kind of wet gas generator and its preparation method
ActiveCN108365776BCompact structureIncreased power output densityNanosensorsNon-aqueous electrolyte accumulator electrodesHuman bodyNanowire
Owner:TSINGHUA UNIV +3
A method of electrodepositing wo3 thin film on discontinuous conductive film
ActiveCN109402561BImprove stabilityGood mechanical flexibilityElectrolytic inorganic material coatingVacuum evaporation coatingSputteringFiber
Owner:XIAMEN UNIV +1
Flexible capacitive pressure sensor and preparation method thereof
PendingCN112484888AImprove dielectric propertiesHigh sensitivityForce measurementPhysicsCapacitive pressure sensor
The invention provides a flexible capacitive pressure sensor and a preparation method thereof, and belongs to the field of flexible sensors. The sensor comprises a first electrode plate, a second electrode plate, a flexible dielectric layer and electrostatic films, the first electrode plate and the second electrode plate are oppositely arranged, the electrostatic films are attached to the surfaceof a conductive film of the first electrode plate and the surface of a conductive film of the second electrode plate, and the flexible dielectric layer is arranged between the first electrode plate and the second electrode plate; and the flexible dielectric layer is a composite material obtained by combining modified titanium dioxide and polyurethane sponge. According to the invention, polyurethane combined with modified titanium dioxide is used as the flexible dielectric layer and is bonded with the flexible electrode in a pressurized manner, so that the preparation of the flexible capacitivepressure sensor with high sensitivity is realized, the sensor has extremely low detection limit, and the multifunctional measurement of the sensor is realized.
Owner:YANSHAN UNIV
Preparation method of flexible OLED light-emitting device based on anode structure of novel laminated film
InactiveCN107316947AHigh carrier mobilityGood mechanical flexibilitySolid-state devicesSemiconductor/solid-state device manufacturingPhysicsThin membrane
The invention relates to a preparation method of a flexible OLED light-emitting device based on the anode structure of a novel laminated film. The OLED light-emitting device comprises a light-emitting layer and a cathode positioned on one side of the light-emitting layer. The method comprises the following steps: S1, growing graphene on a copper foil by adopting a chemical vapor deposition method; S2, transferring the graphene onto a flexible PET substrate; S3, putting the prepared graphene / PET into an HNO3 solution for soaking, and then drying; S4, spraying a PEDOT:PSS solution on the treated graphene, then putting on a heating plate for drying; and S5, putting a prepared graphene / PEDOT:PSS composite film into a vacuum cavity, adopting a vacuum evaporation technology to heat and plate the graphene / PEDOT:PSS composite film on the side, at the back of the cathode, of the light-emitting layer as an anode, and thus preparing the OLED light-emitting device. The graphene serves as the anode of a photoelectric device, so that the anode has the characteristics of high carrier mobility, good mechanical flexibility, high transmittance and the like; and the PEDOT:PSS enables the anode to be of the characteristics of high conductivity, high work function and high transmittance.
Owner:茆胜
Azobenzene derivative, solar thermal energy fuel film composite material and preparation method and application thereof
ActiveCN112552206AHigh energy storage densityFlat surfaceSolar heating energyOrganic chemistryPhotoisomerizationStored energy
The invention relates to an azobenzene derivative, a solar thermal energy fuel film composite material and a preparation method and application thereof, discloses a series of azobenzene derivatives, and provides a method for preparing a photo-induced phase change ready-to-use solar thermal energy fuel film through the azobenzene derivatives. The prepared solar thermal energy fuel composite film has good mechanical flexibility, photoisomerization effect and energy storage capacity. The composite film can rapidly generate cis-trans isomerization to store energy under the irradiation of an ultraviolet lamp, the stored energy is gradually increased along with the prolonging of irradiation time, the full state can be achieved within about 2 hours, the energy density can reach 200 J / g or above,and the temperature of the composite film can be continuously increased by about 5 DEG C. The charging / discharging process has very good reversibility, and no obvious attenuation exists after the energy is circularly charged / discharged for more than 5 times. The composite material has the advantages of simple preparation process, environmental friendliness, easily available materials, large heat release amount, good mechanical flexibility, strong acid and alkali corrosion resistance, good recycling performance and the like.
Owner:QINGDAO UNIV OF SCI & TECH
Printable flexible conductive paste and preparation method thereof
InactiveCN108597645AGood physical and mechanical propertiesStable chemical propertiesInksNon-conductive material with dispersed conductive materialAcetic acidConductive paste
The invention belongs to the technical field of chemical industry, in particular to printable flexible conductive paste. The printable flexible conductive paste comprises the following components by weight: 11.1%-12.8% of fluororubber, 23%-33% of flake silver powder, 44.4%-51.2% of butyl acetate, and 11.1%-12.8% of fluorocarbon surfactant. The fluororubber is taken as an organic carrier, the flakesilver powder, is taken as a conductive filler, the butyl acetate is used for dissolving the fluororubber, and then the printable flexible conductive paste is obtained by simply and evenly mixing thedissolved fluororubber and the fluorocarbon surfactant and the flake silver powder. The fluorocarbon surfactant is adopted to enhance affinity of the flake silver powder to the fluororubber, therebyensuring stability of a material. The printable flexible conductive paste provided by the invention can be prepared in batch, enables the application range of a substrate to be wide, exhibits good mechanical flexibility, and has simple compositions. A preparation process is simple and feasible, the cost is low, and the paste can be cured at a room temperature.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Flexible iron niobate nanowire array electrode and preparation method and application thereof
ActiveCN111653772AShorten the diffusion pathFacilitate conductionNegative electrodesSecondary cellsHydrofluoric acidSodium-ion battery
The invention relates to a flexible iron niobate nanowire array electrode and a preparation method and application thereof. The electrode is composed of a stainless steel mesh and ferric niobate nanowires growing on the stainless steel mesh, the length of each nanowire is 0.8-1 micron, the diameter of each nanowire is 30-35 nm, and the nanowires are vertically, orderly and densely distributed on the surface of a substrate in an array mode. The preparation method of the electrode comprises the following steps: uniformly mixing niobium salt, hydrofluoric acid, deionized water and absolute ethylalcohol in proportion, putting the mixture into a stainless steel net as an iron source and a substrate, and carrying out solvothermal reaction at a certain temperature; and after the reaction is finished, taking out the stainless steel mesh, washing, drying, and finally annealing in inert gas to obtain the electrode. The preparation process is simple, good in reproducibility and low in energy consumption. The nanowire array has the advantages of short ion diffusion path, the stable structure and the like, ensures that the electrode material shows good rate capability and cycle performance inthe sodium-ion battery, and has important significance for research of the flexible sodium-ion battery negative electrode material.
Owner:WUHAN UNIV OF TECH
pet-graphene-silver nanowire composite transparent conductive film and preparation method thereof
InactiveCN105869719BEvenly dispersedGood mechanical flexibilityConductive layers on insulating-supportsSolid-state devicesComposite filmOptical transmittance
The invention provides a method for preparing a PET-graphene-silver nanowire composite transparent conductive film, which includes cutting and cleaning the graphene substrate, preparing the silver nanowire solution, vacuum filtering the silver nanowire film, pressing, removing the filter film and Nitrogen drying step; the present invention also provides a PET-graphene-silver nanowire composite transparent conductive film made by the aforementioned method. The preparation method provided by the invention is to form silver nanowires and graphene independently and then compound them together, wherein the silver nanowires are formed into films by vacuum filtration, and the graphene is grown by CVD. The composite film thus prepared has both Silver nanowires have the advantages of uniform dispersion, controllable thickness, good mechanical flexibility, low sheet resistance, high optical transmittance, and low surface roughness, which can meet the requirements of device applications; and the provided composite transparent film only needs a small amount of silver nanowires. The combination of wires can achieve lower sheet resistance and higher light transmittance, which is 20%-40% lower than the sheet resistance of pure silver nanowire film at the same concentration.
Owner:CHONGQING UNIV
Fluoropolymer membrane for electrochemical devices
ActiveCN109478622AImprove electrochemical performanceGood mechanical flexibilitySemi-permeable membranesFinal product manufacturePhysical chemistryElectrochemistry
Owner:SOLVAY SA +1
Stretchable array structure microelectrode, micro supercapacitor and preparation methods thereof
InactiveCN109786122ASelf-supportingGood mechanical flexibilityHybrid capacitor electrolytesHybrid capacitor electrodesFiberCarbon fibers
The invention relates to the technical field of intersection between textile materials and electrochemical energy storage processes, in particular to a stretchable array structure microelectrode, a micro supercapacitor and a preparation method thereof. The electrode comprises a stretchable textile fabric substrate, conductive ink, porous carbon fiber and metal oxide, wherein the conductive ink isprinted on the textile fabric substrate; the porous carbon fiber is fixed on the textile fabric substrate through the conductive ink; and the metal oxides are electro-deposited on the porous carbon fiber. The preparation method of the electrode comprises the steps of: printing the conductive ink on the textile fabric substrate; statically implanting the porous carbon fiber; and electro-depositingthe metal oxide. Through the preparation methods, the ink and the static carbon fiber implanting process are combined to prepare the stretchable array structure microelectrode, and the microelectrodeis assembled into the micro supercapacitor through water gel electrolyte; and the two preparation methods are simple in process, relatively low in cost and easy to realize large-scale production.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
High and low temperature resistant plastic bottle cap and manufacturing process thereof
PendingCN113980380AGood high and low temperature resistanceImprove shear resistanceLow-density polyethyleneMasterbatch
The invention provides a high and low temperature resistant plastic bottle cap and a manufacturing process thereof, and belongs to the field of high performance plastics, wherein the high and low temperature resistant plastic bottle cap comprises the following components in parts by mass: 60-75 parts of high density polyethylene, 8-16 parts of temperature resistant modified masterbatch, 4-8 parts of low molecular weight branched polyethylene, 1-4 parts of maleic anhydride grafted polypropylene, 1-4 parts of pentadiene, 2-4 parts of a filler, and 1-10 parts of a first auxiliary agent; the temperature-resistant modified master batch is composed of low-density polyethylene, a temperature-resistant modifier and a second auxiliary agent in a mass ratio of 50:(25-45):(1-5); and on the basis of an existing HDPE material, the modifier is added, so that the high and low temperature resistance of the HDPE material is improved.
Owner:连云港市鼎尚包装有限公司
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