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54results about How to "Low membrane resistance" patented technology
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Light emitting device and manufacturing method thereof
InactiveUS20030227021A1High film resistanceLow membrane resistanceOLED manufacture/treatment processesSolid-state devicesSimple Organic CompoundsLight emission
A light emission device manufactured by a method of forming a curved surface having a radius of curvature to the upper end of an insulator 19, exposing a portion of the first electrode 18c to form an inclined surface in accordance with the curved surface, and applying etching so as to expose the first electrode 18b in a region to form a light emission region, in which emitted light from the layer containing the organic compound 20 is reflected on the inclined surface of the first electrode 18c to increase the total take-out amount of light in the direction of an arrow shown in FIG. 1A and, further, forming a light absorbing multi-layered film 24 comprising light absorbing multi-layered film on the first electrode 18c other than the region to form the light emission region, thereby obtaining a light emission device of a structure increasing the amount of light emission taken out in one direction in a light emission element, while not all the light formed in the layer containing the organic compound are taken out from the cathode as a transparent electrode toward TFT but the light was emitted also, for example, in the lateral direction (direction parallel with the plane of the substrate).
Owner:SEMICON ENERGY LAB CO LTD
Light emitting device
InactiveUS7402948B2High film resistanceLow membrane resistanceDischarge tube luminescnet screensElectroluminescent light sourcesLight emitting deviceElectrode
Not all of light generated in the light emitting layer comprising the organic material are taken out in the desirable direction. For example, light emitted in the lateral direction (the direction parallel to the substrate face) is not taken out and therefore is a loss. An object of the present invention is to provide a light emitting device structured so as to increase the amount of light which is taken out in a certain direction after emitted from a light emitting element, as well as a method of manufacturing this light emitting device.In the present invention, an upper end portion of an insulating material 19 that covers an end portion of a first electrode 18 is formed to have a curved surface having a radius of curvature, a second electrode 23a is formed to have a slant face as going from its center portion toward its end portion along the curved surface. Light emitted from a light emitting layer comprising an organic material 20 that is formed on the second electrode 23a is reflected at the slant face of the second electrode 23a to increase the total amount of light taken out in the direction indicated by the arrow in FIG. 1A.
Owner:SEMICON ENERGY LAB CO LTD
Light emitting device and manufacturing method of the same
InactiveUS20080252207A1High film resistanceLow membrane resistanceDischarge tube luminescnet screensElectroluminescent light sourcesLight emitting deviceElectrode
Not all of light generated in the light emitting layer comprising the organic material are taken out in the desirable direction. For example, light emitted in the lateral direction (the direction parallel to the substrate face) is not taken out and therefore is a loss. An object of the present invention is to provide a light emitting device structured so as to increase the amount of light which is taken out in a certain direction after emitted from a light emitting element, as well as a method of manufacturing this light emitting device.In the present invention, an upper end portion of an insulating material 19 that covers an end portion of a first electrode 18 is formed to have a curved surface having a radius of curvature, a second electrode 23a is formed to have a slant face as going from its center portion toward its end portion along the curved surface. Light emitted from a light emitting layer comprising an organic material 20 that is formed on the second electrode 23a is reflected at the slant face of the second electrode 23a to increase the total amount of light taken out in the direction indicated by the arrow in FIG. 1A.
Owner:SEMICON ENERGY LAB CO LTD
Composite structured adsorbents
InactiveUS20080148936A1Lower overall pressure dropReduce power consumptionGas treatmentIsotope separationVacuum pressureSorbent
The present invention relates to composite structured adsorbents and methods of use therefor. The invention more particularly relates to composite structured adsorbents that can include a multi-channel framework (e.g., monoliths), the channels of the multi-channel framework containing adsorbent beads particles therein, with a channel-to-particle diameter ratio in the range of 1 to 10, more preferably 1 to 7 and even more preferably 1 to 5. In the case of non-spherical particles, the hydraulic diameter is used in the calculation of the channel-to-particle diameter. The composite structured adsorbents of the present invention can be used in various industrial applications, for example in pressure swing adsorption (PSA) or vacuum pressure swing adsorption (VPSA) processes to produce O2 from air.
Owner:PRAXAIR TECH INC
Light emitting device and method of manufacturing the same
InactiveUS7579771B2Layer is smallReduce stray lightDischarge tube luminescnet screensElectroluminescent light sourcesOrganic compoundLight emitting device
All lights generated in an organic compound layer are not taken out towards a TFT from a cathode as a transparent electrode. For instance, the light is emitted in a lateral direction (direction parallel to the substrate surface) but the light emitted in the lateral direction is not taken out resultantly, which leads to a loss. Therefore, a light emitting device structured so as to increase the amount of light taken out in a certain direction is provided as well as a method of manufacturing this light emitting device. As a result of etching treatment, an upper edge portion of an insulator (19) is curved to have a radius of curvature, a slope is formed along the curved face while partially exposing layers (18c and 18d) of a first electrode, and a layer (18b) of the first electrode is exposed in a region that serves as a light emitting region. Light emitted from an organic compound layer (20) is reflected by the slope of the first electrode (layers 18c and 18d) to increase the total amount of light taken out in the direction indicated by the arrow in FIG. 1A.
Owner:SEMICON ENERGY LAB CO LTD
Preparation method for polystyrene/polyvinylidene fluoride cation exchange membrane
ActiveCN102814125AEliminate structural defectsLow film resistanceSemi-permeable membranesPolyvinylidene fluorideIon-exchange membranes
The invention discloses a preparation method for a polystyrene / polyvinylidene fluoride cation exchange membrane. According to the method, polyvinylidene fluoride is used as a matrix material for the membrane. The method comprises the following steps: dissolving polyvinylidene fluoride and then fully mixing dissolved polyvinylidene fluoride with styrene and a cross-linking agent so as to obtain a homogeneous polymer solution; carrying out heat-initiated crosslinking copolymerization so as to obtain gelatinoid with an interpenetrating network structure; subjecting the gelatinoid to polymer physical processing so as to obtain polystyrene / polyvinylidene composite powder; then preparing cation exchange powder by using a sulfonation method for a storng-acid cation exchange resin as reference; and finally preparing the cation exchange membrane by using a hot pressing molding method for a heterogeneous cation exchange membrane. The polystyrene / polyvinylidene fluoride cation exchange composite high polymer membrane prepared in the invention has the interpenetrating network structure, so the structural defect of incompatibility between cation exchange resin powder and a high polymer binder in conventional heterogeneous cation exchange membranes is eradicated, membrane resistance is substantially reduced, and comprehensive properties of the polystyrene / polyvinylidene fluoride cation exchange membrane in the invention are closer to comprehensive properties of cation exchange membranes.
Owner:辽宁易辰膜科技有限公司
Light emitting device and manufacturing method thereof
InactiveUS7897979B2High film resistanceLow membrane resistanceOLED manufacture/treatment processesSolid-state devicesOrganic compoundLight emitting device
A light emission device manufactured by a method of forming a curved surface having a radius of curvature to the upper end of an insulator 19, exposing a portion of the first electrode 18c to form an inclined surface in accordance with the curved surface, and applying etching so as to expose the first electrode 18b in a region to form a light emission region, in which emitted light from the layer containing the organic compound 20 is reflected on the inclined surface of the first electrode 18c to increase the total take-out amount of light in the direction of an arrow shown in FIG. 1A and, further, forming a light absorbing multi-layered film 24 comprising light absorbing multi-layered film on the first electrode 18c other than the region to form the light emission region, thereby obtaining a light emission device of a structure increasing the amount of light emission taken out in one direction in a light emission element, while not all the light formed in the layer containing the organic compound are taken out from the cathode as a transparent electrode toward TFT but the light was emitted also, for example, in the lateral direction (direction parallel with the plane of the substrate).
Owner:SEMICON ENERGY LAB CO LTD
Ion-exchange polymer and production method therefor, electrolyte membrane and production method therefor, and composition for producing ion-exchange polymer
ActiveUS20160367980A1Reduce membrane resistanceReduce water permeabilityIon-exchange process apparatusSolid electrolytesHydrogen atomHalogen
There are provided an ion-exchange polymer including a structure represented by the following General Formula (1) and a production method therefor, an electrolyte membrane and a production method therefor, and a composition for producing an ion-exchange polymer.In a case where the sum of a1, b1, and c1 is 1.000, a1 is 0.000 to 0.750, b1 is 0.240 to 0.990, and c1 is 0.001 to 0.100. L represents an alkylene group, L1 and L2 each represent a divalent linking group, R1 is a hydrogen atom or an alkyl group, R2 and R3 each represent an alkyl group or an allyl group, X1− and X2− each represent an inorganic or organic anion, and Y represents a halogen atom. Z1 represents —O— or —NRa—, and Ra represents a hydrogen atom or an alkyl group.
Owner:FUJIFILM CORP
Bipolar membrane and preparation method thereof
InactiveCN101899675AGood chemical stabilityImprove thermal stabilityDiaphragmsHydrogenInterface layer
The invention discloses a bipolar membrane and a preparation method thereof. In the invention, metal phthalocyanine derivants are adhered to at least one monopolar membrane in the bipolar membrane to form the bipolar membrane of an intermediate interface layer formed by the metal phthalocyanine derivants. The bipolar membrane prepared by the method has the advantages of acid resistance and alkali resistance, high hydrolysis efficiency, high hydrogen and hydroxyl ion permeability, high working current density, small membrane impedance, low working voltage, simple overall bipolar membrane preparation process and the like.
Owner:FUJIAN NORMAL UNIV
Method for preparing carbon nano tube modified bipolar membrane with anion groups
InactiveCN102580549AGood compatibilityHigh water dissociation efficiencySemi-permeable membranesCell component detailsCelluloseAcetic acid
The invention relates to a method for preparing a carbon nano tube modified bipolar membrane with anion groups. The method comprises the following steps of: preparing a sodium carboxymethylcellulose (CMC) aqueous solution or a sodium alginate (SA) aqueous solution by using sodium carboxymethylcellulose or sodium alginate, adding a carbon nano tube with the anion groups, stirring and defoaming under reduced pressure to obtain viscous membrane liquid; casting the viscous membrane liquid in a smooth culture dish to prepare a cation exchange membrane; stirring and dissolving chitosan in 1 to 10 mass percent of acetic acid aqueous solution to prepare 1 to 10 mass percent of chitosan acetic acid aqueous solution, dripping 2.5 volume percent of glutaraldehyde solution slowly with stirring, and defoaming under the reduced pressure to obtain a chitosan (CS) anion membrane liquid; and forming a membrane of the CS anion membrane liquid, fixing the membrane to a prepared cation membrane layer, and airing at room temperature to obtain the bipolar membrane. Due to the adoption of the carbon nano tube modified cation membrane layer with the anion groups, the bipolar membrane has the characteristics of high water dissociation efficiency, small membrane impedance, low tank voltage, high compatibility of two membrane layers and the like.
Owner:FUJIAN NORMAL UNIV
Light Emitting Device and Manufacturing Method Thereof
InactiveUS20110193070A1High film resistanceLow membrane resistanceOLED manufacture/treatment processesSolid-state devicesOrganic compoundLight emission
A light emission device manufactured by a method of forming a curved surface having a radius of curvature to the upper end of an insulator 19, exposing a portion of the first electrode 18c to form an inclined surface in accordance with the curved surface, and applying etching so as to expose the first electrode 18b in a region to form a light emission region, in which emitted light from the layer containing the organic compound 20 is reflected on the inclined surface of the first electrode 18c to increase the total take-out amount of light in the direction of an arrow shown in FIG. 1A and, further, forming a light absorbing multi-layered film 24 comprising light absorbing multi-layered film on the first electrode 18c other than the region to form the light emission region, thereby obtaining a light emission device of a structure increasing the amount of light emission taken out in one direction in a light emission element, while not all the light formed in the layer containing the organic compound are taken out from the cathode as a transparent electrode toward TFT but the light was emitted also, for example, in the lateral direction (direction parallel with the plane of the substrate).
Owner:SANYO ELECTRIC CO LTD +1
Process and apparatus for treating water by magneto-electric dialysis
InactiveCN1359857AImprove processing efficiencyIncrease directional forceGeneral water supply conservationDispersed particle separationMagnetic tension forceElectric consumption
A magneto-electric dialysis process for desalinating seawater, preparing salt from seawater and desalting industrial water is characterized by that on the basis is existing electric dialysis equipment, a static magnetic field is additionally used to directionally shift the cations and anions in flowing solution. Its apparatus is composed of a casing with different water inlets and outlets and electrodes, a group of cationic exchange membranes and anionic exchange membranes, which are alternatively arranged between anode and cathode, and a permanent magnet attached to each wall of the casing. Its advantages are high throughput, less electric consumption and not scaling.
Owner:陈树庆 +1
Water treating magnetoelectric dialysis process
InactiveCN1526654AEasy to handleImprove processing efficiencyGeneral water supply conservationDispersed particle separationWater desalinationSeawater
The water treating magnetoelectric dialysis process may be used in sea water desalting, salted water desalting, sea water concentration to produce salt, desalting industrial water, etc. Ion exchange membrane with selective penetration is utilized in establishing a water processing electric dialysis space, where electrolyte ion is made to migrate directionally in the DC electric field. The present invention features that in the electric dialysis space, one static magnetic field is applied, which has magnetic force line direction perpendicular to the water flow direction and the current direction to strengthen the directional migration of anion and cation in the flowing solution. The present invention is superior to available electric dialyser with small water processing amount, great power consumption, easy scaling and other demerits. The present invention is realized simply through applying two permanent magnets onto two opposite walls of the electric dialyser casing.
Owner:陈树庆 +1
Closed type reverse electrodialysis generation method based on asymmetric ion exchange membranes and device thereof
ActiveCN109617455AFacilitated DiffusionReduce thicknessKinetic-electric generatorConcentration polarizationNon symmetric
The invention provides a closed type reverse electrodialysis generation device based on asymmetric ion exchange membranes. A reverse electrodialysis module of the generation device comprises asymmetric zwitterion exchange membranes in alternative arrangement, the diffusion of the ion is convenient, the thickness of the membrane layer is comparatively small at the same time, so that the membrane resistance is effectively reduced; secondly, by adopting the carbon nano-tube / lithium manganate electrode which is free from combining with the cathode and anode chambers, a salinity gradient generationdevice is simplified; furthermore, the device further performs heat exchange process in the system while utilizing the waste heat, and the energy is saved when the waste heat is converted into the electric energy; the working liquid is recycled in the whole generation process, the consumption of the salt and the water is greatly saved. The generation method based on the generation device has theadvantages of being small in membrane resistance, small in concentration polarization phenomenon, and high in generation efficiency. Numerous problems in the prior art are solved, and the method and device have good application prospect in the salinity gradient generation field.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
Dopamine-assisted modified hybrid composite forward osmosis membrane and preparation method thereof
ActiveCN111001318AIncrease water fluxDiffusion fastSemi-permeable membranesMembranesConcentration polarizationCrystallinity
The invention relates to the technical field of membrane separation, and provides a dopamine-assisted modified hybrid composite forward osmosis membrane and a preparation method thereof. An aqueous solution containing inorganic salt and ethanol is used as a coagulating bath; the phase separation speed and the crystallinity of polyvinylidene fluoride are regulated and controlled, a polyvinylidene fluoride membrane surface with a micro-nano structure is constructed, the supporting membrane is endowed with large porosity and high specific surface area, rapid diffusion of a salt solution in membrane pores in the forward osmosis process is promoted, concentration polarization is reduced, membrane resistance is reduced, and the water flux of the forward osmosis membrane is increased; the preparation method comprises the following steps: simultaneously depositing a hydrophilic biomass material and ZIF-8 on the surface of the supporting membrane by utilizing the super-strong adhesion characteristic and multi-active functional groups of dopamine to construct a defect-free hydrophilic hybrid selective cortex and improve the salt rejection rate; ZIF-8 nano particles are generated in situ anduniformly dispersed in the cortex, so that the problem of interfacial compatibility of the hybrid material is solved, and meanwhile, a nano water channel is provided by a cavity in ZIF-8, so that thewater flux is improved while the salt rejection rate is ensured.
Owner:绍兴市俱和环保科技有限公司
Method for preparing bipolar membrane modified by heavy metal ion loaded carbon nao tube
InactiveCN102516575AGood compatibilityHigh water dissociation efficiencySemi-permeable membranesPhysical chemistryCarbon nanotube
The invention relates to a method for preparing a bipolar membrane modified by a heavy metal ion loaded carbon nao tube. According to the method, the heavy metal ion loaded carbon nao tube is added into a cation exchange membrane to modify the bipolar membrane. The method comprises the following steps of: 1) weighing the heavy metal ion loaded carbon nao tube, adding into absolute ethanol, and performing ultra-sonic oscillation to ensure that the carbon nano tube can be dispersed uniformly in the absolute ethanol; and 2) mixing the absolute ethanol containing the carbon nano tube and the prepared cation membrane solution, and preparing the bipolar membrane by a curtain coating or hot-pressing method. The bipolar membrane prepared by the method has the characteristics of high hydrolytic dissociation efficiency, low membrane impedance, low cell voltage, and high compatibility of two membrane layers, and the like.
Owner:FUJIAN NORMAL UNIV
Amphoteric composite forward osmosis membrane as well as preparation method and application thereof
InactiveCN110841494AQuick evacuationIncrease water fluxSemi-permeable membranesGeneral water supply conservationPolyamidePolyvinylidene difluoride
The invention relates to an amphoteric composite forward osmosis membrane. According to the amphoteric composite forward osmosis membrane, an adopted porous support membrane is a super-hydrophilic polyvinylidene fluoride membrane; a polyamide layer is formed on the porous support membrane, and a zwitterionic layer is formed on the polyamide layer. In the present invention, the zwitterionic layer is formed by amido groups through zwitterionic reaction; through cooperation with the super-hydrophilic characteristic of the polyvinylidene fluoride membrane prepared through water vapor induced phaseseparation, the strong hydration and the charging performance of a catechol derivative modified graphene oxide nano-water channel and the zwitterionic skin layer, the water flux of the composite forward osmosis membrane is greatly improved while a low back-mixing salt flux is kept.
Owner:吾净科技(深圳)有限公司
Renewable ultrathin multilayer composite forward osmosis membrane as well as preparation method and application thereof
ActiveCN112999899AConcentration polarization is not significantHigh solute retentionMembranesSemi-permeable membranesPolyamidePervaporation membrane
The invention discloses a renewable ultrathin multilayer composite forward osmosis membrane as well as a preparation method and application thereof. The forward osmosis membrane comprises a PE microporous supporting layer, a micro-crosslinked polyamide layer, a super-hydrophilic hybrid layer and an adsorption catalysis functional layer. The preparation method comprises the following steps: performing interfacial polymerization reaction on an acyl chloride monomer and an amine monomer on the surface of a PE microporous membrane, performing heat treatment to generate a micro-crosslinked polyamide layer, reacting with a mixed solution containing a polyphenol compound and polyhedral oligomeric silsesquioxane to generate a super-hydrophilic hybrid layer, and fully contacting with a metal compound aqueous solution, and reducing metal irons through microwave heatingto generate the super-hydrophilic hybrid layer. The concentration polarization of the PE microporous support membrane is not obvious, the solute rejection rate of the micro-crosslinked polyamide layer is high, the water molecule permeation resistance of the super-hydrophilic hybrid layer is weak, the pollutant removal capacity of the adsorption catalysis functional layer is high, the high-performance and renewable forward osmosis membrane is obtained, and seawater desalination, sewage purification, pollutant catalytic degradation and the like can be achieved.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Ion exchange membrane for reverse electrodialysis device and reverse electrodialysis device including same
ActiveCN104437090AIncreased maximum output densityImprove water resistanceSolid electrolytesGeneral water supply conservationPolymer electrolytesPolymer substrate
This invention relates to an ion exchange membrane for a reverse electrodialysis (RED) device, a manufacturing method thereof and a reverse electrodialysis device including the ion exchange membrane, wherein the ion exchange membrane includes a porous polymer substrate; and a polymer electrolyte incorporated into pores of the porous polymer substrate. According to this invention, cation and anion exchange membranes for a reverse electrodialysis device have superior ion conductivity and thus can minimize membrane resistance, thereby remarkably improving maximum power density of the reverse electrodialysis device, and also have high water resistance and heat resistance, making it possible to stably operate the reverse electrodialysis device.
Owner:TORAY ADVANCED MATERIALS KOREA
A closed reverse electrodialysis power generation method and device based on asymmetric ion exchange membrane
ActiveCN109617455BFacilitated DiffusionReduce thicknessKinetic-electric generatorConcentration polarizationCarbon nanotube
The invention provides a closed type reverse electrodialysis generation device based on asymmetric ion exchange membranes. A reverse electrodialysis module of the generation device comprises asymmetric zwitterion exchange membranes in alternative arrangement, the diffusion of the ion is convenient, the thickness of the membrane layer is comparatively small at the same time, so that the membrane resistance is effectively reduced; secondly, by adopting the carbon nano-tube / lithium manganate electrode which is free from combining with the cathode and anode chambers, a salinity gradient generationdevice is simplified; furthermore, the device further performs heat exchange process in the system while utilizing the waste heat, and the energy is saved when the waste heat is converted into the electric energy; the working liquid is recycled in the whole generation process, the consumption of the salt and the water is greatly saved. The generation method based on the generation device has theadvantages of being small in membrane resistance, small in concentration polarization phenomenon, and high in generation efficiency. Numerous problems in the prior art are solved, and the method and device have good application prospect in the salinity gradient generation field.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
Nitride semiconductor light-emitting device
ActiveCN102456791ALow membrane resistanceReduce light outputSemiconductor devicesActive layerLight emitting device
A nitride semiconductor light-emitting device includes at least one n-type semiconductor layer, an active layer and at least one p-type semiconductor layer within a rectangle nitride semiconductor region on a substrate. The n-type semiconductor layer has a partial exposed area, a p-side branch electrode integral with a p-side electrode pad formed on a current diffusion layer formed on the p-type semiconductor layer, an n-side branch electrode integral with an n-side electrode pad formed on the partial exposed area of the n-type semiconductor layer, the p-side and n-side branch electrodes extend parallel to each other along two opposite sides of the semiconductor region, and conditions of 0.3<M / L<1.1 and L<Lmax are satisfied; L is the distance between centers of the p-side and n-side electrode pads, M is the distance between the p-side and n-side branch electrodes, and Lmax represents a distance between the centers of the p-side and n-side electrode pads.
Owner:HUAIAN AUCKSUN OPTOELECTRONICS TECHNOLOGY CO LTD
Preparation method of bipolar membrane
ActiveCN103396574ALow membrane resistanceLower impedanceSemi-permeable membranesPower flowIon permeability
The invention discloses a preparation method of a bipolar membrane. The preparation method of the bipolar membrane is characterized by comprising the following steps of: (1), preparing a PAMPSLi membrane solution; (2), preparing a PAMPSLi-SA membrane; and (3), preparing a PAMPSLi-SA / mCS bipolar membrane. The preparation method of the bipolar membrane disclosed by the invention is simple and convenient to operate. The bipolar membrane which is obtained by the preparation method disclosed by the invention has the characteristics of being small in membrane impedance, low in working voltage, large in working current density, high in hydrolytic dissociation efficiency, high in ion permeability and the like.
Owner:CHONGQING TAIKE ENVIRONMENTAL PROTECTION TECH CO LTD
Method for preparing carbon nano tube modified bipolar membrane with anion groups
InactiveCN102580549BGood compatibilityHigh water dissociation efficiencySemi-permeable membranesCell component detailsCelluloseCarbon nanotube
Owner:FUJIAN NORMAL UNIV
Bipolar membrane for fuel cell and preparation method of bipolar membrane
The invention discloses a bipolar membrane for a fuel cell and a preparation method of the bipolar membrane. The method comprises the following steps of casting an alkaline polymer solution onto an amphoteric metal substrate to form a membrane; separating the metal substrate and an alkaline thin membrane during ion exchange in an alkaline solution; and carrying out hot-pressing formation on an alkaline polymer membrane and an acid polymer membrane by taking the acid polymer solution as a binding agent. By the method, the thickness of the alkaline polymer membrane can be effectively controlled, favorable contact of the alkaline polymer membrane and the acid polymer membrane is achieved, thus, the resistance of the bipolar membrane is reduced, and the power density of the bipolar membrane fuel cell is effectively improved. The method is simple to operate, the prepared bipolar membrane is provided with a complete bipolar membrane interface, and has excellent mechanical property and high ion conductivity at a room temperature, and the performance of the bipolar membrane fuel cell is remarkably improved.
Owner:BEIHANG UNIV
Membrane casting agent and preparation method thereof
ActiveCN109092067AChemical bond stabilityImprove bindingMembranesUltrafiltrationUltrafiltrationUltraviolet
The invention provides a membrane casting agent and a preparation method thereof. The method comprises the steps as follows: mixing polyether sulfone and a hydrophilic modified solution to obtain a mixed solute, dissolving the solute in a solvent, performing heating and stirring to obtain a solution, adding an additive and a photoinitiator to the solution, and using ultraviolet lamp irradiation for initiation to enable raw materials in the polyether sulfone membrane casting agent solution to interact in advance. On one hand, the hydrophilic property of the membrane casting agent is effectivelyimproved due to addition of the additive, and on the other hand, an ultrafiltration membrane material prepared from the membrane casting agent has higher mechanical performance and service life by use of the photoinitiator and ultraviolet lamp irradiation. The ultrafiltration membrane material prepared from the membrane casting agent has good hydrophilic performance and excellent mechanical performance.
Owner:HEBEI ZHONGQUAN ENVIRONMENT PROTECTION TECHCO LTD
Solid-state ion conductor and lithium-enrich manganese-based material composite electrode and lithium ion battery
InactiveCN109638233AExcellent lithium ion conductivityExcellent rate performanceElectrode carriers/collectorsSecondary cellsElectrical conductorAluminium-ion battery
The invention provides a solid-state ion conductor and lithium-enrich manganese-based material composite electrode. The solid-state ion conductor and lithium-enrich manganese-based material compositeelectrode comprises a lithium-enrich manganese-based material and a solid-state ion conductor, and the chemical formula of the lithium-enrich manganese-based material is xLi2MnO3.(1-x)LiMO2, wherein xis greater than 0 and less than 1, and M is one or more of Mn, Ni and Co; and the chemical formula of the solid-state ion conductor is Li<1+a>[AB<2-c>(DO4)3] or Li<2+alpha>E<beta>G<3+gamma>. The invention further provides a lithium ion battery comprising the composite electrode. The solid-state ion conductor has excellent ionic conductivity and is composited in the lithium-enrich manganese-based electrode, and the lithium ion transmission rate of the electrode can be increased. In the battery charging and discharging processes, the solid-state ion conductor participates in the forming process of a solid electrolyte membrane on the surface of the lithium-enrich manganese-based material, the membrane impedance of the lithium-enrich manganese-based positive electrode is lowered, and thusthe rate performance and cycling stability of the lithium-enrich manganese-based electrode are improved.
Owner:CHINA AUTOMOTIVE BATTERY RES INST CO LTD
Preparation method for polystyrene/polyvinylidene fluoride cation exchange membrane
ActiveCN102814125BEliminate structural defectsLow membrane resistanceSemi-permeable membranesCross-linkPolystyrene
The invention discloses a preparation method for a polystyrene / polyvinylidene fluoride cation exchange membrane. According to the method, polyvinylidene fluoride is used as a matrix material for the membrane. The method comprises the following steps: dissolving polyvinylidene fluoride and then fully mixing dissolved polyvinylidene fluoride with styrene and a cross-linking agent so as to obtain a homogeneous polymer solution; carrying out heat-initiated crosslinking copolymerization so as to obtain gelatinoid with an interpenetrating network structure; subjecting the gelatinoid to polymer physical processing so as to obtain polystyrene / polyvinylidene composite powder; then preparing cation exchange powder by using a sulfonation method for a storng-acid cation exchange resin as reference; and finally preparing the cation exchange membrane by using a hot pressing molding method for a heterogeneous cation exchange membrane. The polystyrene / polyvinylidene fluoride cation exchange composite high polymer membrane prepared in the invention has the interpenetrating network structure, so the structural defect of incompatibility between cation exchange resin powder and a high polymer binder in conventional heterogeneous cation exchange membranes is eradicated, membrane resistance is substantially reduced, and comprehensive properties of the polystyrene / polyvinylidene fluoride cation exchange membrane in the invention are closer to comprehensive properties of cation exchange membranes.
Owner:辽宁易辰膜科技有限公司
Heating element based on thermo-electronic film and preparation method thereof
PendingCN111970772AHigh emissivityReduced energy storageHeating element materialsNickel sesquioxideSesquioxide
The invention discloses a heating element based on a thermo-electronic film and a preparation method thereof. The preparation method comprises the following steps that 1, SnCl4.5H2O is added into a mixed solution of ethyl alcohol and deionized water, heating and stirring are conducted till the SnCl4. 5H2O is fully dissolved, antimony trichloride, bismuth trichloride and titanium tetrachloride areadded and stirred to be uniform, and an electric heating film solution is obtained; 2, the preheated tubular base body is placed in a high-temperature furnace, vaporous electrothermal film liquid is introduced into the high-temperature furnace, the vaporous electrothermal film liquid is deposited on the surface of the tubular base body, heat preservation is conducted, then natural cooling is conducted, and an electrothermal film layer is obtained; wherein the tubular base body rotates around the central axis of the tubular base body in the high-temperature furnace; and 3, manganese dioxide, nickel sesquioxide, cobalt sesquioxide and chromium oxide are mixed, and the mixture is sprayed on the outer side of the electrothermal film layer to obtain the infrared emission film layer.
Owner:长春电子科技学院
Polyvinylidene fluoride/polyalkenes sulfonate cation exchange alloy membrane preparation method
InactiveCN103223304AExcellent electrochemical performanceEliminate incompatible structural defectsSemi-permeable membranesOrganosolvIon exchange
The invention discloses a polyvinylidene fluoride / polyalkenes sulfonate cation exchange alloy membrane preparation method, which uses polyvinylidene fluoride as a matrix material of the sulfonic acid type cation exchange membrane, and comprises the following methods: completely dissolving polyvinylidene fluoride and alkene sulfonate by organic solvent and water, dissolving a cross-linking agent and an initiator into, and obtaining a homogeneous high-molecular composite solution; and then heating and copolymerizing the composite solution for forming a jelly with an interpenetrating network structure, extruding, solidifying, pelleting, drying, crushing or the like, thereby obtaining a cation exchange alloy powder; finally using a hot pressing moulding method, adding auxiliary material, banburying, milling, pulling sheet, hot pressing, cooling and obtaining polyvinylidene fluoride / polyalkenes sulfonate cation exchange alloy membrane. The cation exchange alloy membrane manufactured by the invention has a high-molecular interpenetrating network structure and a low membrane surface resistor, thereby avoiding a sulfonation reaction step with violent condition, and easily realizing a large scale industrial production.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
PbCaSnAlCeAg grid alloy
InactiveCN107641733AFine and uniform grainGrain purificationElectrode carriers/collectorsRare-earth elementChemical composition
The invention discloses a PbCaSnAlCeAg grid alloy. The alloy is prepared from the following chemical components in percentage by mass: 0.06 to 0.07 percent of calcium, 1.2 to 1.3 percent of tin, 0.01to 0.02 percent of aluminum, 0.02 to 0.04 percent of cerium, 0.01 to 0.03 percent of silver and the balance of lead. According to the PbCaSnAlCeAg grid alloy disclosed by the invention, rare earth elements Ce and Ag are simultaneously added into the PbCaSnAlCeAg alloy; alloy grains are fine and uniform; an alloy grain boundary is purified and intercrystalline deep corrosion is prevented, so that corrosion resistance of a lead-calcium alloy is improved; more importantly, a corrosion product can be dense and is not easy to fall off, so that adhesive power between the corrosion product and the grid alloy is improved, loosening and falling of the corrosion product are prevented, and the conductivity of a corrosive film on the surface of the lead-calcium alloy is improved.
Owner:HEBEI UNIV OF TECH
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