214results about "Capacitor details" patented technology

Provided according to some embodiments of the present invention are electrical double layer (EDL) capacitive devices that include an insulating substrate defining a nanopore therethrough; a nanopore electrode exposed in a portion of the nanopore; and an electrolyte in contact with the nanopore electrode. Also provided are methods of using EDL capacitive devices according to embodiments of the invention to sequence polynucleotides or other polymers and / or to detect analytes.

An electrochemical double layer capacitor (EDLC) is provided. The EDLC can include first and second multi-layered polarizable electrodes arranged within a casing. Each multi-layered polarizable electrode can include a nanoporous carbon layer and a metal current collector layer including a metal substrate having a first surface and a second surface. The first surface can be covered by the nanoporous carbon layer. An organic electrolyte can be impregnated within the nanoporous carbon layer. The first surface of the metal substrate can include a plurality of conductive carbon particles each (i) being locally and individually fused into the first surface of the metal substrate by spot melting an area on the first surface of the metal substrate, (ii) projecting out of the first surface, and (iii) surrounded by a flowed surface of the metal substrate. The plurality of conductive carbon particles are at least one of graphite, carbon black, and acetylene black particles

It is provided the electrolytic solution for use in the electrolytic capacitor including a capacitor element and a casing containing said capacitor element, said capacitor element including a pair of electrodes, and a conductive separator (E) which is formed with a conductive polymer layer (F) containing a dopant agent (H) on its surface and is interposed between said pair of electrodes, said conductive separator (E) and said pair of electrodes being rolled up in an overlapped state with each other, and spaces between said pair of electrodes being impregnated with the electrolytic solution for electrolytic capacitor, wherein an acid component (D) and a base component (C) as electrolytic components to be contained in said electrolytic solution are at such a molar ratio that the acid component (D) is excessive. By use of said electrolytic solution for electrolytic capacitor, the increase in the ESR with the elapse of time in an electrolytic capacitor is suppressed.

A method for forming a novel composite of carbon nanofibers grown on a nickel foam is described wherein the composite, when used in a capacitor exhibits superior change retention and discharge capacities. Once the composite material has been obtained, it may be formed into electrodes which can be used to form supercapacitors of large per area capacitances in the order of 1.2 F / cm2.

The invention discloses a solid super capacitor adopting a flexible material as a substrate. The solid super capacitor provided by the invention is manufactured by a simple process, relatively lower in cost, light in weight and folding, and simultaneously achieves high energy density and high power density. A manufacturing method for the solid super capacitor comprises the following steps of: (1) depositing a layer of adhesive on the flexible substrate; (2) depositing a layer of metal aluminum film on the adhesive; (3) performing anodic oxidation twice on the aluminum film to obtain a single-pass aluminum oxide template; (4) deposing a layer of metal as a lower electrode on the surface of a pore space of the aluminum oxide template; (5) depositing a layer of insulating medium on the surface of the lower electrode; (6) depositing a layer of metal as an upper electrode on the surface of the insulating medium; and (7) depositing a layer of metal as a top current collector on the surface of the upper electrode.

The present invention provides a process for producing a porous sintered metal, in which the pore diameter distribution of porous sintered metal can be easily controlled. The present invention also provides a process including: forming a molding containing a metal powder, a pore forming material, and a binder resin: heating the molding at the decomposition temperature of the pore forming material to thereby effect thermal decomposition thereof: and then sintering the molding at a sintering temperature higher than the decomposition temperature, wherein as the pore forming material, there is used particles of polyhydroxyalkanoate produced in microbial cells. The above molding may be formed by coating or printing onto a base material, a metal powder dispersion containing a metal powder, a pore forming material, a binder resin, and a solvent so as to form a coated material or printed material, and then detaching the base material from the coated material or printed material.

The invention discloses a flexible dye-sensitized solar cell, which comprises a flexible conducting substrate, a dye-sensitized nano-porous semiconductor film, an electrolyte and a flexible counter electrode. The flexible conducting substrate is that an organic conducting polymer film of an organic conducting polymer layer is coated on a high polymer base material, wherein the thickness of the organic conducting polymer layer is between 0.1 and 3 mu m. The flexible dye-sensitized solar cell has the advantages of good surface uniformity, flexibility and transmittance of the conducting substrate, good flexibility of the cell, no crack after optionally curling, good photoelectric properties and long service life.

A flexible supercapacitor, a method of manufacturing the same, and a device including the same are provided, the flexible supercapacitor includes a first flexible electrode assembly, a second flexible electrode assembly corresponding to the first flexible electrode assembly, a separator for preventing contact between the first flexible electrode assembly and the second flexible electrode assembly, and an electrolyte between the first flexible electrode assembly and the second flexible electrode assembly. The flexible supercapacitor may include a tube including the first flexible electrode assembly, the second flexible electrode assembly, the separator, and the electrolyte.

The invention discloses a polyvinylidene difluoride-trifluoroethylene(PVDF-TrFE) / nickel doped titanium dioxide (Ni-TiO2) composite film for a supercapacitor. By aid of the method of tape casting, the composite film is prepared by using the PVDF-TrFE as a matrix and the Ni-TiO2 as a filling agent. The composite film is characterized by including a plurality of the following compositions of, by mass percent, 5% to 11% of PVDF-TrFE, 0.5% to 10% of Ni-TiO2 powders, 0.01% to 0.1% of cross-linking agents and 79% to 93% of organic solvents. By changing the mass fraction of nanometer Ni-TiO2, composite films with different dielectric properties can be obtained. The composite film obtained by using the preparation process is high in dielectric constant, low in dielectric loss and good in flexibility,and is a novel inorganic-organic composite dielectric material; besides, the preparation process is simple to operate and environment-friendly and has a good application prospect in the field of high energy storage materials.

The invention relates to an amphiphilic benzimidazole ruthenium complex for a dye-sensitized solar cell and a preparation method of the amphiphilic benzimidazole ruthenium complex and belongs to the technical field of synthetic chemistry. The preparation method of the amphiphilic benzimidazole ruthenium complex for the dye-sensitized solar cell comprises the following steps: selecting 2,6-di(N-(2,4,6-methyl-3,5-diethyl phosphonate methyl-benzyl)-2-benzimidazolyl) pyridine as a fixed ligand, and introducing a benzimidazole group, a pyrenyl and an alkoxyl structure into an auxiliary ligand to synthesize a novel amphiphilic benzimidazole ruthenium complex [Ru(Py2G1MeBip)(XPOH)](PF6)2 for the dye-sensitized solar cell by utilizing rich coordination chemical properties, wherein stability of the solar cell can be still greatly improved and water resistance stability of the complex can be still improved due to a hydrophobic unit in an amphiphilic complex molecule even under the condition that a small amount of water exists. The complex molecule can be adsorbed onto an ITO conductive substrate and the like due to the fixed ligand in the complex molecule, and the amphiphilic benzimidazole ruthenium complex is an excellent light-sensitive dye.

The invention discloses a solar cell based on a surface plasma reinforcing principle and a preparing method of the solar cell. The solar cell comprises a wide band gap semiconductor layer, a photosensitization dye layer, a graphene layer and a metal nanoparticle layer, wherein the wide band gap semiconductor layer, the photosensitization dye layer, the graphene layer and the metal nanoparticle layer are arranged on a back electrode in sequence in a stacked mode. According to the solar cell, a local electromagnetic field around particles is greatly improved through local surface plasmons of the metal nanoparticles, and incident optical field energy is stored around the surfaces of the nanometer particles, so that effective excitation is conducted on optical excitation dye, and the efficiency of light absorption of the solar cell is improved. Meanwhile, single-layer graphene is used for replacing an electrolyte solution and a counter electrode in a traditional cell, the cell structure is simplified, the safety performance of the cell is effectively improved, and the solar cell has huge potential in industrial production and application.

The invention provides a nitrogen-doped graphene / metal composite current collector and a preparation method thereof. The preparation method comprises steps: graphite oxide is taken to be added to an imidazole-based ionic liquid solution and a mixed solution is obtained; after ultrasound is carried out for 0.5 to 3 hours, an urea solution is added; after ultrasound is carried out for 10 to 30min, reaction is carried out for 5 to 12 hours at the temperature of 80 to 150 DEG; when the temperature is reduced to the room temperature, a metal salt solution is added, and stirring is carried out for 5 to 60min; vacuum filtration is carried out on the obtained solution by adopting a microporous membrane; a filter cake is dried at the temperature of 40 to 60 DEG, the membrane is removed, and a nitrogen-doped grapheme membrane with metal salt is obtained; the membrane is placed in a tubular furnace, argon is inputted to exhaust air, a mixed argon and hydrogen is inputted, heating is carried out for 0.5 to 5 hours at the temperature of 200 to 600 DEG and the nitrogen-doped graphene / metal composite current collector is obtained. The preparation method is simple, and the obtained nitrogen-doped grapheme / metal composite current collector is strong in mechanical strength, strong in conductive performances and uniform in thickness.

A multi-functional, laminated composite comprises a plurality of cloth layers (3) penetrated by an infused matrix, wherein at least one cell (1) for energy storage is supported by and integrally built up from at least one of the cloth layers (3), the cell (1) being embedded in the matrix. The cell may comprise first and second electrodes (6,7) separated by a porous, separator layer (2) that has a liquid electrolyte-permeable, matrix-free intra-electrode region to which the electrolyte (2′) may be added before or after resin infusion to activate the cell. The structural composite may have integrated energy storage comprising a lithium-ion rechargeable cell, optionally of printed construction.

The invention relates to a quinacridone derivative and application thereof. The quinacridone derivative is obtained by subjecting quinacridone (matrix) to chemical modification (connection with electron-donating groups and electron-withdrawing groups of triphenylamine). In the quinacridone derivative which contains donor-acceptor electronic groups and is designed and prepared in the invention, electrons are easier to transfer in an excitation state, so that the quinacridone derivative achieves the performance of effectively converting optical energy into electric energy and can be used as a photosensitizer for a dye-sensitized nanocrystal solar cell. Experiments show that the quinacridone derivative provided by the invention has favorable photosensitization property.

The invention discloses a composite current collector and a preparation method thereof. The method includes: coating mixture formed by nano carbon material, nano metal powder, metal catalyst, adhesive resin and organic solvent on one surface of a light foil, and rolling and pressing to form a conductive coating after drying; under a vacuum or protective gas atmosphere, performing high-temperature carbonization on the conductive coating to obtain the composite current collector. The method has the advantages that the conductive coating mixed by the nano carbon material, the nano metal powder, the metal catalyst and the adhesive resin, the adhesive resin is carbonized under catalyzing of the metal catalyst and under high temperature, and whisker-shaped carbon filaments which allow the nano metal powder and the nano carbon material to be connected, wrap the nano metal powder and the nano carbon material and is tightly combined with the light foil; no magnetic control sputtering equipment is needed, high equipment investment is avoided, no methane atmosphere is needed, and danger in production is lowered.

The invention provides an organic dye for a dye sensitized solar cell and a preparation method of the organic dye, belonging to the technical field of organic high polymer materials and relating to a dye sensitized solar cell technology. In the provided organic dye, phenothiazine-triphenylamine is used as a cascading electron donor, and the organic dye provided by the invention belongs to a D-D-pi-A structured molecule and is novel organic dye containing a phenothiazine-triphenylamine cascading electron donating group. The organic dye provided by the invention is applied to the dye sensitizedsolar cell, and higher photoelectric conversion efficiency is obtained. The preparation method has the characteristics of low cost and simple, controllable preparation process and environmental friendliness. The novel organic dye molecule belongs to a pure organic compound, expensive raw material metal ruthenium does not need to be used, the novel organic dye is easy to synthesize, and has low cost and potential application prospect in the aspect of substituting noble metal organic dyes.

The invention discloses a boiling and high-temperature resistant polyester thermal contraction material. The thermal contraction material comprises the following components in part by weight: 20 to 40 parts of polyethylene terephthalate (PET), 15 to 25 parts of modified polyethylene terephthalate glycol (PETG), 10 to 20 parts of polybutylene terephthalate (PBT), 5 to 10 parts of polyhexamethylene adipamide (PA66), 1 to 5 parts of thermoplastic elastomer (TPE) and 5 to 15 parts of polyethylene naphthalate (PEN). After a sleeve made of the thermal contraction material is contracted on the surface of a capacitor and then directly boiled for 5 minutes in boiling water or contracted and aged and then boiled for 15 minutes in boiling water and contracted on the surface of the capacitor and then repeatedly aged for 6 hours at the high temperature of 125 DEG C, good appearance can be kept. The invention also discloses a preparation method for the boiling and high-temperature resistant polyester thermal contraction material.

The invention discloses a preparation method of a graphene composite current collector. The preparation method comprises the following steps of preparing a graphene oxide suspension liquid, adding a conductive polymer monomer into the graphene oxide suspension liquid for in-situ polymerization to obtain a graphene oxide / conductive polymer composite suspension liquid, adding a hydrazine hydrate solution into the graphene oxide / conductive polymer composite suspension liquid for a reaction to obtain a graphene / conductive polymer composite suspension liquid, carrying out vacuum filtration of the graphene / conductive polymer composite suspension liquid by a microporous membrane, drying the filter cake, and separating the filter cake from the microporous membrane to obtain the graphene composite current collector. According to the preparation method, the conductive polymer monomer is added into the graphene oxide suspension liquid so that a conductive polymer is formed, and the conductive polymer can be dispersed between graphene sheets well so that graphene aggregation is prevented and the graphene mixed suspension liquid having good dispersity is obtained. Compared with the traditional graphene current collector preparation method, the preparation method can realize preparation of the graphene composite current collector having good integrity and good film-forming properties.

An encapsulation material is described that prevents moisture or oily substances from penetrating into a protected region or device. The encapsulation material includes alternating layers of a hydrophobic and oleophobic first layer and a hydrophilic second layer. The second hydrophilic layer traps water molecules, preventing them from migrating. By alternating hydrophobic / oleophobic layers with hydrophilic layers (including hydrophobic layers having a thickness of approximately that of a water molecule or a hydroxyl ion), the encapsulation material forms multiple, finite energetic wells at the hydrophilic layers. These potential wells confine water molecules, oxygen molecules, and hydroxyl ions preventing migration of through the encapsulation material.

The invention relates to a solar cell device which comprises a conductive substrate, a doping active layer, an electron injection layer formed on the doping active layer and a cathode formed on the electron injection layer. The doping active layer is formed between the conductive substrate and the electron injection layer, and is formed by at least one selected from the group consisting of P3HT / PCBM, P3AT / PCBM, MDMO-PPV / PCBM, and MEH-PPV / PCBM doped with phthalocyanines dye micromolecule, and the cathode is formed on the electron injection layer. The solar device has relatively high photocurrent density and light absorption efficiency. In addition, a manufacturing method of the solar cell device is also provided.

The invention discloses a preparation method used for a dye-sensitized solar cell containing semiconductor quantum dots, comprising the steps as follows: by a magnetron sputtering method, a TiO2 layer is sputtered on conductive glass; furthermore, the TiO2 layer is prepared as a porous shape; the conductive glass is dipped in an organic matter containing mercapto and carboxy group; subsequently, a group of semiconductor quantum dots are added in the holes of the porous TiO2 layer; a dye, electrolyte and a pair of electrodes are added in the organic matter so as to form the dye-sensitized solar cell containing the semiconductor quantum dots. Compared with the prior art, the preparation method has the advantages that by changing the type, particle size and shape of the quantum dot, the peak position of the absorption spectrum can be easily changed and almost all of the sunlight can be absorbed; furthermore, the dye-sensitized solar cell has high photoelectric conversion efficiency and is extremely stable within the working temperature range of the solar cell; the cost is effectively reduced and the preparation method is simple when the quantum dots are adopted to replace the fuel containing the rare metal in part.

The invention provides a graphene / organic thin film composite current collector and a preparation method thereof. The method comprises the steps that graphite oxide is taken and added into a solvent; after ultrasonic dispersion, graphene oxide suspension liquid is acquired; pH is adjusted to 10 to 11; a hydrazine hydrate solution is added; after reaction, filtration is carried out to acquire graphene; the graphene is added into an organic solvent to acquire graphene suspension liquid; the graphene suspension liquid is coated on an organic thin film; after drying is carried out, roller pressing is repeatedly carried out; and after the soaking of the mixed solution of acetone and isopropyl alcohol, roller pressing is repeatedly carried out, so as to acquire the graphene / organic thin film composite current collector. According to the method, the process is simple; the use of an adhesive is not needed; the prepared graphene / organic thin film composite current collector has the advantages of light quality, strong electrical conductivity, corrosion resistance and small contact resistance with a battery active material; and the power density and the cycle life of the electrochemical battery or capacitor can be improved. The invention further provides an electrochemical electrode and the electrochemical battery or capacitor employing the electrode.

A porous metallic body has a three-dimensional network structure composed of an alloy containing at least Ni and Cr, the porous metallic body having a skeleton formed of a hollow core and a shell, in which when a cross section of the shell is evenly divided in the thickness direction into three portions, i.e., an outer portion, a central portion, and an inner portion, and when concentrations in percent by weight of Cr in the outer portion, the central portion, and the inner portions are defined as a, b, and c, a, b, and c satisfy the relation given by expression (1):|(a+c) / 2−b| / (a+b+c) / 3<0.20  (1)

The present invention relates to a porous membrane containing cellulose fibers, wherein the cellulose fibers contain 5% by weight or more of cellulose fibers with a diameter of 1 μm or more, relative to the total weight of the cellulose fibers, the mode diameter (maximal frequency) of the pore distribution determined by the mercury penetration method is less than 0.3 μm, the air resistance per thickness of 10 μm is from 20 to 600 seconds, and the porous membrane has a volume resistivity of 1500 Ω·cm or less determined by alternate current with a frequency of 20 kHz in which the porous membrane is impregnated with 1 mol / LiPF6 / propylene carbonate solution. The porous membrane according to the present invention can provide a separator for electrochemical devices with superior properties at a reasonable cost.

The invention discloses a method for controlling the temperature of an electrolytic capacitor and a temperature-controllable electrolytic capacitor using the method. According to the method for controlling the temperature of an electrolytic capacitor, a thermoelectric refrigerating unit, a temperature sensor and a heat insulation layer are arranged outside an electrolytic capacitor; the temperature sensor and the thermoelectric refrigerating unit are both electrically connected with a control main board; the temperature sensor is used for detecting the temperature of the electrolytic capacitor and sends a temperature signal to the control main board; according to the temperature of the electrolytic capacitor, the control main board adjusts the direction and flow of current passing through the thermoelectric refrigerating unit so that the thermoelectric refrigerating unit performs heating or refrigerating operation the electrolytic capacitor to adjust the temperature of the electrolytic capacitor to keep in a preset value range. The method disclosed by the invention can control the temperature of the electrolytic capacitor at a high temperature, prolong the service life of the electrolytic capacitor and lower the overall cost of products in fields of street lights and other products which use the an electrolytic capacitor.

Disclosed herein is an air valve for an energy storage device, including: a valve body mounted in a gas vent of an energy storage device and having a passage for discharging gases within the gas vent to the outside; and a plurality of magnets mounted within the passage to apply repulsion force to one another so as to block the gas vent from the outside by the repulsion force and communicate the gas vent with the outside when a gas pressure within the gas vent is larger than the repulsion force, thereby discharging gases. By this configuration, exemplary embodiments of the present invention can configure the air valve with the simple structure capable of smoothly discharging gases generated from the energy storage device while minimizing a volume of the air valve and being semi-permanently used while minimizing a mechanical configuration of the air valve.

The invention relates to a solid electrolytic capacitor; wherein, an anode body is made from a metallic porous body provided with a dielectric layer on the surface and functioning as a valve; a capacitor element is formed by a solid electrolyte and a cathode body; the periphery of the capacitor element is provided with more than one oxidation protection film; the principal component of the oxidation protection film is resin. The capacitor has the advantages of excellent ESR performance and stability under high temperature. The invention also relates to a preparation method of the solid electrolytic capacitor, which is characterized in that: the solid electrolyte and the oxidation protection film are dipped in a liquid solution, and then is dried and hardened to prepare the solid electrolytic capacitor. The preparation method can produce the high-performance solid electrolytic capacitor with a simple and cheap method.

The invention discloses an impregnation method of aluminium electrolytic capacitor slugs, the impregnation time of which is short. The invention is characterized in that the method comprises the following steps: (1) placing the slugs to be impregnated in an impregnation vat in order; (2) vacuumizing the impregnation vat to be in the vacuum degree of 0.05MPa-minus 0.15MPa, keeping the pressure for 10min-15min, opening a connection valve, pumping an electrolyte solution to the impregnation vat and closing the connection valve; (3) vacuumizing the impregnation vat to be in the vacuum degree of 0.05MPa-minus 0.15MPa, and impregnating the slugs for 0.5h-20h; and (4) drying the impregnated slugs. The method of the invention has simpleness, practicability and convenient operation; through experiments, the impregnation time is greatly shortened, for example, the conventional impregnation time of the slug with a diameter of Phi16mm-Phi18mm is 15h-20h, and the impregnation time thereof is 10h-15h after the method is used, thereby greatly shortening technology time, improving production efficiency, and obviously improving product quality.

The invention discloses a solid dye-sensitized nanocrystal / microcrystal silicon composite film solar cell and a preparation method thereof, and relates to a special semiconductor device for converting light energy into electric energy. The solid dye-sensitized nanocrystal / microcrystal silicon composite film solar cell is composed of a transparent conducting substrate, a dye-sensitized nanocrystal porous film, a porous membrane, a microcrystal silicon hole transport layer and a back electrode, wherein the dye-sensitized nanocrystal porous film is coated on the transparent conducting substrate; the microcrystal silicon hole transport layer is settled on the dye-sensitized nanocrystal porous film to form the solid dye-sensitized nanocrystal / microcrystal silicon porous film; and an aluminum or copper film is plated on the solid dye-sensitized nanocrystal / microcrystal silicon porous film to form the back electrode. In the invention, the dye-sensitized nanocrystal and the microcrystal silicon composite film are matched and compounded to prepare the solid dye-sensitized nanocrystal / microcrystal silicon composite film solar cell. The invention overcomes the defect of poor liquid stability in the traditional dye-sensitized solar cell and the defects of low preparation rate and high preparation cost in the prior microcrystal silicon film solar cell.