Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
84 results about "Lithium perchlorate trihydrate" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Lithium perchlorate is the inorganic compound with the formula LiClO4. This white or colourless crystalline salt is noteworthy for its high solubility in many solvents. It exists both in anhydrous form and as a trihydrate.
All-solid polymer electrolyte, and preparation method and application of all-solid polymer electrolyte
InactiveCN104538670AImprove conductivityHigh mechanical strengthSolid electrolytesFinal product manufacturePolyethylene oxideBarium titanate
The invention discloses an all-solid polymer electrolyte, and a preparation method and an application of the all-solid polymer electrolyte, and belongs to the field of lithium ion batteries. The all-solid polymer electrolyte comprises polyethylene oxide, lithium salt, inorganic nano particles and ion liquid, wherein a mass ratio of the lithium salt to polyethylene oxide is 0.1-0.5; the mass sum of the inorganic nano particles and the ion liquid is 10-30% of the mass of the all-solid polymer electrolyte; the lithium salt comprises one or several of bistrifluoromethane sulfonimide lithium salt, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluorophosphate, lithium hexafluoroarsenate, lithium trifluoromethanesulfonate and lithium bis borate; and the inorganic nano particles comprise one or several of nano aluminum oxide, nano silicon oxide, nano zirconium oxide and nano barium titanate. The all-solid polymer electrolyte has better mechanical strength and higher ion conductivity. The method is simple in technology and low in cost; and raw materials are easy to obtain.
Owner:HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN
Method for preparing ion liquid type gel polymer electrolyte and battery by in situ polymerization
ActiveCN101475663ASimple preparation processSimple manufacturing processFinal product manufactureSecondary cellsPolymer scienceTetrafluoroborate
The invention relates to a method for preparing ionic liquid type gel polymer electrolyte through home position polymerization. The method comprises the following steps: taking acrylonitrile and polyethylene glycol dimethyl acrylic acid ester as monomers, taking ethylene carbonate as an organic plasticizer, taking azo diisobutyl cyanogen as an initiator, taking lithium perchlorate as a lithium salt, adding ionic liquid 1-butyl-3-methylimidazole tetrafluoborate as the component of the electrolyte, and adopting a free radical initiation and home polymerization mode to prepare the stable ionic liquid type gel polymer electrolyte. The home polymerization mode has a simple and feasible process, and is capable of directly assembling a lithium cell while simultaneously preparing the electrolyte. The prepared ionic liquid type gel polymer electrolyte has higher room temperature conductivity, good dimensional stability and mechanic properties, and can also be applied to dye sensitization solar cells. The prepared ionic liquid type gel polymer electrolyte cell can avoid the leakage and volatilization of the electrolyte and improve the safety of the cell.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Secondary battery
InactiveUS20140004412A1Achieve performanceLarge capacityCell electrodesLi-accumulatorsParticulatesElectrical battery
A secondary battery which can achieve battery performance satisfactorily in a low temperature environment in cold climates or the like is provided. Further, a secondary battery having high capacity even in a low temperature environment in cold climates or the like is provided. A secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution which contains a nonaqueous solvent and an electrolyte. The negative electrode includes a negative electrode active material layer. The negative electrode active material layer contains graphene, a binder, and a negative electrode active material containing a particulate alloy-based material. The nonaqueous solvent contains propylene carbonate and the electrolyte contains lithium perchlorate.
Owner:SEMICON ENERGY LAB CO LTD
Cell or battery with a metal lithium electrode and electrolytes therefor
InactiveUS20080038645A1Improve cycle lifeOrganic electrolyte cellsLi-accumulatorsSulfolaneMetallic lithium
An electrolyte for rechargeable batteries with a negative electrode of lithium or lithium containing alloys comprising: one or several non-aqueous organic solvents, one or several lithium salts and one or several additives increasing the cycle life of the lithium electrode. The electrolyte solution may comprise one or several solvents selected from the group comprising: tetrahydrofurane, 2-methyltetrahydrofurane, dimethylcarbonate, diethylcarbonate, ethylmethylcarbonate, methylpropylcarbonate, methylpropylpropyonate, ethylpropylpropyonate, methylacetate, ethylacetate, propylacetate, dimetoxyethane, 1,3-dioxalane, diglyme (2-methoxyethil ether), tetraglyme, ethylenecarbonate, propylencarbonate, γ-butyrolactone, and sulfolane. The electrolyte solution may further comprise at least one salt or several salts selected from the group consisting of lithium hexafluorophosphate (LiPF6), lithium hexafluoroarsenate (LiAsF6), lithium perchlorate (LiClO4), lithium sulfonylimid trifluoromethane (LiN(CF3SO2)2)) and lithium trifluorosulfonate (CF3SO3Li) or other lithium salts or salts of another alkali metal or a mixture thereof. Also disclosed is an electrochemical cell or battery with an anode of metallic lithium or a lithium-containing alloy, and such an electrolyte.
Owner:OXIS ENERGY
A kind of electrolytic solution and secondary lithium battery and capacitor containing the electrolytic solution
ActiveCN102280664AImprove conductivityHigh lithium ion transfer numberLiquid electrolytic capacitorsFinal product manufactureElectrochemistryCorrosion
The invention provides an electrolyte and a secondary lithium battery and an electrochemical capacitor containing the electrolyte. The electrolyte contains a lithium salt and an organic solvent, wherein the lithium salt comprises fluorine lithium sulfimide and lithium perchlorate. The electrolyte containing the fluorine lithium sulfimide and the lithium perchlorate, provided by the invention, has excellent performances, such as high conductivity, high ionic migration number, low viscosity, and the like. Because the lithium perchlorate in the electrolyte can be used for effectively reducing or eliminating the corrosion of fluorine lithium sulfimide above 4V to a current collector aluminum foil, the electrolyte provided by the invention is superior to the commercial electrolyte system in various aspects by preferably matching with a series of functional additives.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI
Low vapor pressure solvent for electrochromic devices
The present invention provides an electrolyte for electrochromic devices, the substance comprising γ-butyrolactone (gamma-butyrolactone or GBL). The electrolyte may include polymethylmethacrylate. The electrolyte may further include a salt, such as a salt that includes lithium perchlorate or trifluorosulfonimide. In accordance with further aspects to the invention, the electrolyte may include propylene carbonate.
Owner:THE BOEING CO
Method for polymerizing nano silicon dioxide/polymethyl methacrylate gel polymer electrolyte initiated by one-step method
The invention relates to a one-step initiating polymerization method for preparing nano silica / polymethyl methacrylate gel polymer electrolyte, which is characterized in that: methyl methacrylate used as monomer and the nano silica used as modified particles are mixed directly with prepared lithium perchlorate / propylene carbonate (1mol / l of electrolyte solution used as solvent). The mixed solution is polymerized in water bath heating to 80 DEG C for 2.5 hours, and then reacted gel solution can form the gel electrolyte film after being poured onto a glass board and extending to become film with being dried for 8 hours in the temperature of 60 DEG C. The benefit effects of he invention are that the process of the method is simple and available; the gel solution can be prepared directly with the electrolyte solution being used as the solvent which can take away a large amount of polymerization heat generated by free radical polymerization; the prepared gel polymer electrolyte has satisfied ionic conductivity, and good space size stability and chemical and electro chemical stability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Electrolyte
InactiveCN102185156AThe group ratio is reasonableReasonable ratioSecondary cellsHigh energyMethyl carbonate
The invention relates to electrolyte, belonging to the technical field of material chemistry and high energy batteries. The electrolyte consists of an organic solvent, an additive and lithium salt, wherein the organic solvent is one or a mixture of ethylene carbonate, ethyl methyl carbonate, methyl-carbonate or diethyl carbonate; the additive is sulfurous ester; and the lithium salt is selected from lithium perchlorate, lithium hexafluorophosphate, lithium tetrafluoroborate, perfluoroalkyl lithium sulfonate, perfluoroalkyl sulfoacid imide lithium, annular perfluoroalkyl di(sulfonyl)lithium imide, perfluoroalkyl acyl sulfonate lithium methide, organic boric acid ester lithium, organic lithium phosphate or organic aluminic acid ester lithium. Due to the adoption of the electrolyte, a layer of stable solid electrolyte phase boundary face film can be formed on the surface of a graphite electrode, the compatibility between the electrolyte and an electrode material is improved, the temperature suitability of the electrolyte material is expanded through proportion optimization, and the cycle performance, rate capability and temperature suitability of a lithium secondary battery using the electrolyte can be effectively improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Electrochromic material and preparation method thereof
InactiveCN101418214AIncrease contact areaShorten the diffusion distanceTenebresent compositionsSupporting electrolyteArchitectural glass
The invention discloses an electrochromic material which is a porous film compounded through nickel oxide and 3, 4-ethylene dioxygen thiofuran, wherein the composite film has a random porous structure; the range of aperture is between 10 and 250 nm; and the thickness of the film is between 200 and 500 nm. The preparation method comprises the following steps: 3, 4- ethylene dioxygen thiofuran is used as a monomer; the porous nickel oxide is used as a conductive template; lithium perchlorate is added into an acetonitrile solution and is used as a supporting electrolyte to prepare the nickel oxide / poly3, 4-ethylene dioxygen thiofuran composite porous electrochromic film through an electrochemical cyclic voltammetry sedimentation method. The prepared electrochromic material has good mechanical performance and electrochromic performance, shows multiple electrochromism and rapid discoloring effect, can be assembled to a transmission-type or reflection-type full solid electrochromic device, and has wide application prospect in information storage recording, architectural glass smart window, large screen display, infrared stealth and other fields.
Owner:ZHEJIANG UNIV
Inorganic/organic nano composite solid electrolyte and method of preparing the same
InactiveCN101276658AHigh conductivity at room temperatureHigh lithium ion transfer numberSolid electrolytesIndividual molecule manipulationPolyethylene oxideHeat stability
The invention discloses an inorganic / organic nanometer composite solid electrolyte and a preparation method thereof, belonging to the inorganic / organic nanometer composite material and the preparation process field. The solid electrolyte is composed by polyethylene oxides PEO, lithium perchlorates LiClO4 and hydrotalcite nanometer sheets LDHNS, has a chemical formula of PEO / LiClO4 / LDHNS, the mass parts of each component are 54-91%, 8-16% and 1-30% respectively. The preparation method of the composite solid electrolyte comprises: mixing PEO, LiClO4 and LDHNS in water equably and sufficiently, and then vaporizing the solvent to obtain the composite solid electrolyte of the invention. The inorganic / organic nanometer composite solid electrolyte according to the invention has high conductivity, high lithium ion transference number and heat stability, the electrolyte can be used as the electrolyte of a solid lithium ion battery.
Owner:BEIJING UNIV OF CHEM TECH
Preparation of polymer solid electrolyte
ActiveCN101440177AOvercoming volatileOvercome securityFinal product manufactureSecondary cellsEpoxyPolymer science
The invention discloses a method for preparing polymer solid electrolyte, which adopts mixed epoxy resin and nitrile rubber as a substrate of the solid electrolyte, dissolves the substrate and lithium perchlorate in tetrahydrofuran, and prepares the composite polymer solid electrolyte by a solution casting method. The method is simple to operate and easy to form a film, and the prepared polymer solid electrolyte can overcome the defects of difficult forming of gel type polymer electrolyte, complex film-making process of polymer / ionic liquid electrolyte, etc., and simultaneously can solve the safety problems of easy volatilization and easy leakage of electrolyte of a liquid lithium ion battery. The electrical conductivity of the prepared polymer solid electrolyte can reach 1.81*10<-4> S.cm<-1> at a temperature of 20 DEG C, improves by 3 to 4 times compared with pure nitrile rubber / lithium perchlorate polymer electrolyte, and is in the same level with the electrical conductivity of polymer electrolyte which is reported in literature and prepared by compositing the nitrile rubber and an ionic liquid. The prepared polymer solid electrolyte has stable performance at a temperature of less than 200 DEG C, and can meet the use requirement on the lithium ion battery.
Owner:上海长宁橡胶制品厂有限公司
Method for synthesizing perfluoroalkyl sulfimide alkali metal salt and ionic liquid synthesized by same
ActiveCN101747244AQuick responseEnhance nucleophilic attack capabilitySulfonic acid amide preparationRubidiumDecomposition
The invention discloses a method for synthesizing perfluoroalkyl sulfimide alkali metal salt (M[Rf1SO2NSO2Rf2]) which is abbreviated to M[PFSI], wherein Rf1 and Rf2=CmF2m+1, m=1-8, M=Li, Na, K, Rb, and Cs. The method utilizes potassium (rubidium and cesium) salt of perfluoroalkyl sulfamide and perfluoroalkyl sulfonyl fluoride for reaction in the existence of potassium carbonate (rubidium and cesium), so that the potassium (rubidium and cesium) salt of the perfluoroalkyl sulfimide can be conveniently prepared with high yield which is 70-90%; the high-purity corresponding lithium (or sodium) salt (M[PFSI], M=Li and Na) can be obtained through double decomposition exchange reaction of the potassium (rubidium and cesium) salt and lithium perchlorate (or sodium) in aprotic polar solvent (such as acetonitrile, dimethyl carbonate, nitromethane and the like); and the hydrophobic functionalized ionic liquid composed of cations of sulfonium, ammonium or phosphorus with the [PFSI] through reaction of the prepared alkali metal salt and the sulfonium salt, ammonium salt or phosphorus salt of which the side chain contains functionalized functional groups.
Owner:武汉市瑞华新能源科技有限公司
Grafting type comb polymer solid electrolyte material and preparation method thereof
InactiveCN105206872AImprove athletic abilityImprove electrochemical stabilitySolid electrolytesSecondary cellsVulcanizationPolymer science
The invention relates to a grafting type comb polymer solid electrolyte material and a preparation method thereof. The raw material comprises epoxidized natural rubber, methoxy polyethylene glycol carboxylic acid and lithium perchlorate, a flexible segment is introduced in the epoxidized natural rubber through a grafting reaction, the graft methoxy polyethylene glycol carboxylic acid provides the high segment motion ability and the ability of interaction with lithium salt, and ether oxygen atoms on the graft act with lithium perchlorate to dissociate the lithium perchlorate into lithium ions and form a coordinated complex. Compared with the prior art, no other plasticizer or active agent or vulcanization accelerator or rubber chemical is introduced, no small molecule product residue exists in the prepared material, and the electrochemical stability and ionic conductivity of the electrolyte can be improved.
Owner:SHANGHAI JIAO TONG UNIV
Method for preparing bi-(sulfonyl fluoride) imine and (fluorinated alkyl sulfonyl fluorine sulfonyl) imine alkali metal salt
Owner:武汉市瑞华新能源科技有限公司
Graphene-based enzyme-modified anode of biological fuel cell and preparation and application
InactiveCN105261761ALarge specific surface areaImprove conductivityMaterial nanotechnologyCell electrodesSodium bicarbonateEthanol dehydrogenase
The invention belongs to the field of electrochemical biological fuel cells, and discloses a graphene-based enzyme-modified anode of a biological fuel cell and a preparation and an application. The preparation method comprises the following steps: carrying out a surface pretreatment on a base electrode; putting the pretreated base electrode into a graphene solution, and carrying out an electrochemical polymerization by a cyclic voltammetry scan method to obtain a GN-modified electrode; putting the GN-modified electrode into a water solution containing pyrrole, lithium perchlorate and sodium bicarbonate, carrying out the electrochemical polymerization by a potentiostatic method and modifying a layer of polypyrrole; dropwise adding a composite enzyme solution containing chitosan, ethanol dehydrogenase and acetaldehyde dehydrogenase to the surface of the electrode, and airing the electrode to obtain the modified electrode with an enzyme layer; and soaking and crosslinking the electrode in a glutaraldehyde solution, so as to obtain the graphene-based enzyme-modified anode of the biological fuel cell. The electrode disclosed by the invention is low in cost, good in catalytic performance and wide in applicable substrate range, and has a good application prospect.
Owner:SOUTH CHINA UNIV OF TECH
Method for synthesizing perfluor alkyl sulfonyl imine metal salt
InactiveCN102786450AQuick responseEnhance nucleophilic attack capabilitySulfonic acid amide preparationPhosphonium saltPhosphonium
The invention discloses a method for synthesizing a perfluor alkyl sulfonyl imine metal salt (M[Rf<1>SO2NSO2Rf<2>], or M [PFSI] for short, wherein Rf<1> and Rf<2> represent CmF(2m+1), m is 1 to 8, and M represents Li, Na, K, Rb or Cs). According to the method, a perfluor alkyl sulfonamide potassium (rubidium or cesium) salt and perfluor alkyl sulfonyl fluorine react with the existence of potassium (rubidium or cesium) carbonate, so that a perfluor alkyl sulfonyl imine potassium (rubidium or cesium) salt can be prepared conveniently at the high yield of 70-90%; and the perfluor alkyl sulfonyl imine potassium (rubidium or cesium) salt, lithium (or sodium) perchlorate and the like are subjected to double decomposition exchange reaction in an aprotic polar solvent (such as acetonitrile, dimethyl carbonate and nitromethane), so as to obtain the corresponding high-purity lithium (or sodium) salt (M [PFSI], wherein M represents Li or Na). The prepared alkali metal salt reacts with a sulfonium, ammonium or phosphonium salt with side chains containing functional radicals so as to obtain hydrophobic functional ionic liquid composed of sulfonium, ammonium or phosphonium positive ions and [PFSI]<->.
Owner:HUAZHONG UNIV OF SCI & TECH
Polyp-styrene sulfonyl(trifluoromethyl sulfonyl)lithium imide-polyvinylidene carbonate copolymer and application thereof
The invention belongs to the technical field of polymer synthesis and discloses a polyp-styrene sulfonyl(trifluoromethyl sulfonyl)lithium imide-polyvinylidene carbonate copolymer and application thereof. The copolymer is synthesized by the following steps: adding a p-styrene sulfonyl(trifluoromethyl sulfonyl)lithium imide monomer, a vinylidene carbonate monomer and a catalyst into a solvent I andperforming polymerization reaction at 70 to 100 DEG C, wherein the p-styrene sulfonyl(trifluoromethyl sulfonyl)lithium imide monomer is prepared by the steps of performing reaction on sodium p-styrenesulfonate and sulfoxide chloride in a solvent at -10 to 25 DEG C, adding an acid-binding agent, an activating agent and trifluoromethyl sulfonamide and performing reaction at -10 to 25 DEG C; addingpotassium carbonate and performing reaction at 25 to 70 DEG C; and adding lithium perchlorate and performing reaction at 25 to 60 DEG C. The copolymer provided by the invention has high lithium ion migration number and room-temperature conductivity, is simple in preparation method, can realize large-scale production and can serve as lithium ion battery electrolyte.
Process for manufacturing lithium sulfur battery
ActiveCN103985913ALow purityPrevent oxidationElectrode thermal treatmentFinal product manufactureSolid state electrolyteHigh rate
The invention discloses a process for manufacturing a lithium sulfur battery. The process comprises the following steps: adding polyacrylonitrile resin micro powder and diatomite into a high-speed mixing stirrer according to a mass ratio of 36-39 to 64-61, adding an NMP solvent which accounts for 6-24 weight percent of the diatomite to serve as a raw material, performing pretreatment, and performing repeated dipping and high-temperature evaporation in an NMP solution of lithium salt (namely a 6-9 weight percent of NMP solution containing lithium polysulfide, lithium methylaminobutyrate, lithium perchlorate and lithium phosphate), thereby preparing a positive material; preparing all-solid-state electrolyte of the lithium sulfur battery from lithium methylaminobutyrate, lithium perchlorate and lithium phosphate; and adsorbing molten metal lithium through pores of carbon-containing diatomite at 630-660 DEG C when metal lithium and the formed carbon-containing diatomite electrode are in a vacuum electric heating furnace, thereby finishing preparation of a negative material. The all-solid-state electrolyte of the lithium sulfur battery prepared by the process has high sulfur containing capacity, high ion transport capacity and high conductive performance, and the high rate performance and high cycle performance of the lithium sulfur battery can be improved.
Owner:威海区域创新中心有限责任公司
Heat-resistant electrolyte materials and electrochromic devices including them
The present disclosure relates to relates to heat-resistant gel electrolyte materials and their uses, for example, in electrochromic devices such as electrochromic windows. In certain embodiments, the disclosure provides an electrolyte material including a polymer of ethyleneimine, optionally at least partially crosslinked (e.g., with an epoxide crosslinker such as the diglycidyl ether of bisphenol A); a lithium salt (e.g., lithium perchlorate); and a high-boiling solvent (e.g., DMSO). The electrolyte materials can be used in electrochromic devices, such as electrochromic windows, e.g., for use as automobile sunroofs.
Owner:UNIV OF WASHINGTON
Chemical carbon dioxide gas generator
A chemical carbon dioxide gas generator comprising: - a charge housing; - a carbon dioxide gas penetrable charge, contained in the said housing, the charge comprising a) 40-60 wt. % of a substance which upon decomposition generates carbon dioxide, which substance is selected from the group of magnesium carbonate, other carbonates, magnesium oxalate and other oxalates, b) 20-50 wt. % of an oxidiser selected from the group of sodium chlorate, potassium chlorate, lithium chlorate, other metal chlorates, sodium perchlorate, potassium perchlorate, lithium perchlorate, and other metal perchlorates, c) 1-20 wt. % of carbon or another fuel, d) 1-10 wt. % binder, said components a), b), c) and d) together forming 90-100 wt. % of the total weight of the charge; - an ignition device for igniting the charge; - a carbon dioxide gas treatment unit for reducing the content of one or more side-products - which may have been formed by the charge - in the generated carbon dioxide, and / or for cooling carbon dioxide gas generated by the charge; and - an outlet for carbon dioxide gas generated by the charge.
Owner:荷兰应用自然科技研究组织TNO
Poly-3,4-ethylenedioxythiophene nano mesh structure film as well as preparation method and application thereof
InactiveCN109369890ASpecial nano-network structureExcellent electrochromic performanceElectrolysis componentsElectrolytic organic productionSupporting electrolyteElectrolysis
The invention discloses a poly-3,4-ethylenedioxythiophene nano mesh structure film as well as a preparation method and an application thereof. The poly-3,4-ethylenedioxythiophene is of a nano mesh structure. The poly-3,4-ethylenedioxythiophene film is specifically prepared by the following steps: by taking 3,4-ethylenedioxythiophene as a monomer in a three-electrode cell system, taking lithium perchlorate as supporting electrolyte, and taking acetonitrile as an electrolytic solvent, uniformly mixing to obtain electrolyte; and by taking an indium tin oxide conductive glass electrode as a working electrode, taking a platinum electrode as an auxiliary electrode, and taking a silver / silver chloride electrode as a reference electrode, carrying out an electrochemical polymerization reaction at aroom temperature by adopting cyclic voltammetry or a potentiostatic method, thereby obtaining a polymer film deposited on the working electrode, eluting, and drying, thereby obtaining the poly-3,4-ethylenedioxythiophene. The conductive polymer film prepared by the method disclosed by the invention has a special nano mesh structure. Compared with an ordinary plane structure, the conductive polymerfilm has excellent electrochromic property.
Owner:ZHEJIANG UNIV OF TECH
Poly-3-methyl thiophene-N-doped graphene (P3MT/N-GE) modified glassy carbon electrode and application thereof to detecting pesticide phoxim
ActiveCN103454327ALarge specific surface areaEasy to operateMaterial electrochemical variablesDoped grapheneN dimethylformamide
The invention discloses a poly-3-methyl thiophene-N-doped graphene (P3MT / N-GE) modified glassy carbon electrode and application of the P3MT / N-GE modified glassy carbon electrode to detecting a pesticide phoxim. The P3MT / N-GE modified glassy carbon electrode disclosed by the invention is obtained by the following steps: ultrasonically dispersing N-doped graphene in an N,N-dimethylformamide solution; then dripping a dispersion solution on a glassy carbon electrode; evaporating a solvent to obtain an N-doped graphene modified electrode constructed by a sensitive film and the glassy carbon electrode; preparing the poly-3-methyl thiophene-N-doped graphene (P3MT / N-GE) modified glassy carbon electrode in an acetonitrile solution containing a 3-methyl thiophene-graphene monomer and lithium perchlorate by electrochemical polymerization. The modified carbon electrode is simple in preparation operation, environment-friendly, and low in cost; the modified carbon electrode can be used for detecting the pesticide phoxim and has the characteristics of high sensitivity, wide linear range, good repeatability, high stability and the like; the lowest detection limit reaches 0.002 micromole / liter.
Owner:NANJING UNIV OF SCI & TECH
Preparation method for PVDF porous nanofiber membrane
InactiveCN103668781AResistant to solution corrosionGood film formingNon-woven fabricsLithium metaborateLithium chloride
The invention discloses a preparation method for a PVDF porous nanofiber membrane. The preparation method comprises the steps that (1) alkyl alcohol amine poly oxygen ethane ether, lithium perchlorate, acetone, lithium metaborate, tetramethylurea, lithium oxalate, single-walled carbon nanotubes, lithium lactate, lithium citrate, polyvinylidene fluoride, vinyl trimethoxy silane, lithium phosphate, methyl ethyl acetone, lithium carbonate, dimethyl sulfoxide, dilithium silicate, hexafluoroisopropanol, tetrahydrofuran and lithium chloride are added into a water solution, heated and stirred to be dissolved, and cooled to the room temperature; (2) then, polyvinylpyrrolidone is added and stirred to be dissolved to obtain a spinning solution; (3) electrostatic spinning is carried out on the obtained spinning solution; (4) a copper net is used as a receiver to obtain the fiber membrane, and the obtained fiber membrane is impregnated with ethyl alcohol for 3h. The PVDF porous nanofiber membrane prepared through the method has the corrosive resistance to solutions, the good membrane-forming performance and the good interfacial compatibility.
Owner:CHANGSHU LIYUAN MEMBRANE TECH
Method for synthesizing zirconium-containing polysilane
InactiveCN101724155ASolve the problem of low productivityMild reaction conditionsSilanesSynthesis methods
The invention relates to a method for preparing zirconium-containing polysilane, which is synthesized by the steps of adopting the electrochemical synthesis method, taking magnesium blocks as negative and positive poles, and polymerizing methyl trichlorosilane, allyl chloride, cyclopentadiene and zirconium chloride in tetrahydrofuran solution and electrolyte supported by lithium perchlorate to obtain the polysilane containing double bonds and zirconium. Results show that the polysilane prepared by the method in the invention has high quality retention rate and ceramic yield. The invention has simple and safe operation method; and the zirconium-containing polysilane can improve the ceramic yield of precursors favorably, successfully introduce the antioxidant metal zirconium, and is a ceramic precursor with good performance.
Owner:SHANGHAI UNIV
Method for preparing composite solid electrolyte based on polyphosphazenes micron-sphere
InactiveCN101792587AHigh conductivity at room temperatureImprove mechanical propertiesSecondary cellsElectrochemistryLithium-ion battery
The invention discloses a method for preparing a composite solid electrolyte based on a polyphosphazenes micron-sphere, belonging to the technical field of lithium ion batteries. The method comprises the following steps of: preparing acetonitrile solution of the polyphosphazenes micron-sphere; and adding polyoxyethylene and lithium perchlorate and pouring the mixture to a polytetrafluoroethylene template to prepare the composite solid electrolyte. The polyphosphazenes micron-sphere prepared by the invention has uniform arrangement of the diameters, favorable dispersion degrees as well as smooth and uniform surfaces of the film, which proves that organic / inorganic hybrid polyphosphazenes micron-sphere and a PEO polymer electrolyte matrix have favorable compatibility and indicates that the composite polymer electrolyte has high room-temperature conductivity, a high electrochemical stable window and high lithium ion transference number. The composite solid electrolyte can be used as a lithium ion battery solid electrolyte material.
Owner:SHANGHAI JIAO TONG UNIV
Electrochemical synthesis method of 1,1'-diindolylmethane derivatives
InactiveCN106567104AGood reaction selectivityHigh yieldElectrolysis componentsElectrolytic organic productionSynthesis methodsElectrochemistry
The invention discloses an electrochemical synthesis method of 1,1'-diindolylmethane derivatives. According to the method, indole derivatives, tetrahydrofuran and tetrahydrofuran derivatives are used as raw materials for synthetizing the 1,1'-diindolylmethane derivatives under the electrochemical condition. The method specifically comprises the following steps that the indole derivatives are taken and added into a mixed solvent of the tetrahydrofuran or tetrahydrofuran derivatives with acetonitrile, and a catalytic amount of lanthanum chloride and electrolyte lithium perchlorate are added; a platinum electrode is inserted into reaction liquid, stirring is conducted at the room temperature, and a reaction is carried out through electrification until the complete reaction is conducted; and the reaction liquid is extracted, concentrated and separated, and the 1,1'-diindolylmethane derivatives is obtained. Electricity is used for catalysis, expensive metal catalyzers and other oxidizing agents are not needed, stoichiometric lewis acid, protonic acid and heating are not needed either, reaction can be carried out mildly at the room temperature, the selectivity is good, the yield is high, and the whole process is simple and feasible; and the method is environmentally friendly and conforms to the idea of green chemistry.
Owner:SOUTH CHINA UNIV OF TECH
Low vapor pressure solvent for electrochromic devices
Owner:THE BOEING CO
Preparation method of bacterial cellulose gel polymer electrolyte of lithium battery
ActiveCN106099182ASimple preparation stepsStrong targetingFinal product manufactureElectrolyte accumulators manufactureWater bathsPolymer science
The invention discloses a preparation method of bacterial cellulose gel polymer electrolyte of a lithium battery and belongs to the technical field of preparation of polymer electrolyte. The preparation method comprises the following steps: after cooking watermelon peels, stirring and mixing the watermelon peels with anhydrous calcium chloride and the like; commonly carrying out fermentation by utilizing yeast and microorganisms in biogas liquid; taking a bacterial cellulose membrane on the surface of fermented liquid; washing, carrying out alkali leaching and water-bath heat preservation, and filtering to obtain a membrane; carrying out water-bath treatment, freezing and secondary unfreezing on the membrane; then mixing the membrane with polyethylene glycol dimethyl ether and lithium perchlorate; and under a vacuum condition, impregnating to obtain the bacterial cellulose gel polymer electrolyte of the lithium battery. The preparation method is simple in preparation steps; the gel polymer electrolyte is prepared by sufficiently utilizing bacterial cellulose; and a plasticizer does not need to be added and the pertinence is strong; and the problems that the ion conductivity is low and the mechanical performance is poor are effectively solved.
Owner:周佰芹
Preparation of carbon nanotube composite material electrochemical sensor capable of detecting dopamine and paracetamol simultaneously
InactiveCN104165911AGood dispersionImprove stabilityMaterial electrochemical variablesWater dispersibleModified carbon
The invention provides a carbon nanotube composite material prepared from a branching macromolecule modified carbon nanotube with an amphiphilic photoelectric activity function and a preparation method of an electrochemical sensor with the carbon nanotube composite material, and belongs to the field of macromolecule self-assembling and composite material electrochemical sensors. The carbon nanotube composite material electrochemical sensor is prepared by the following steps: (1) firstly, synthesizing a macromolecule with an amphiphilic photoelectric activity branching function; (2) modifying a carbon nanotube with the synthesized functional macromolecule to prepare the water dispersible carbon nanotube composite material; (3) dropwise adding carbon nanotube composite material dispersion liquid onto a clean electrode surface and crosslinking under UV irradiation to form a membrane; and (4) inserting a modified electrode into a lithium perchlorate / acetonitrile solution for electric polymerization to prepare the carbon nanotube composite material electrochemical sensor. The method has energy-saving and environment-friendly effects by using water as a solvent. Besides, the prepared nano composite material sensor is good in stability and high in sensitivity, and the service life of the nano composite material sensor is prolonged.
Owner:JIANGNAN UNIV
Gas generating compositions
InactiveUS6860951B2Pedestrian/occupant safety arrangementAmmonium perchlorate explosive compositionsCellulose acetateFumed silica
A low-solids gas generating composition, which is a mixture of a fuel selected for the group consisting of cellulose, cellulose acetate, hexamine, and mixtures thereof, and an oxidizer selected from the group consisting of ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, phase stabilized ammonium nitrate, a combination of ammonium nitrate with potassium nitrate, potassium perchlorate, or mixtures thereof, such that the combination is a solid solution, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof. The combination of ammonium nitrate with other salts in solid solution is intended to phase stabilize the ammonium nitrate. The oxidizer-fuel mixture is within about 4 percent of stoichiometric balance. Useful alkali metal salts include lithium carbonate, lithium nitrate, sodium nitrate, potassium nitrate, and mixtures thereof. The preferred oxidizers for the gas generating composition of the invention are ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof. In addition, the gas generating composition may include an energizing agent, such as RDX or HMX. The gas generating composition of the invention may further comprise sub-micron fumed silica to reduce moisture contamination and serve as a processing and powder flow aid and / or a binder, and may be in the form of pressed pellets, grains, or granules.
Owner:TALLEY DEFENSE SYST
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com