205 results about "Electrode fabrication" patented technology

Implementations of the present invention relate generally to high-capacity energy storage devices and methods and apparatus for fabricating high-capacity energy storage devices. In one implementation, a method for forming a multi-layer cathode structure is provided. The method comprises providing a conductive substrate, depositing a first slurry mixture comprising a cathodically active material to form a first cathode material layer over the conductive substrate, depositing a second slurry mixture comprising a cathodically active material to form a second cathode material layer over the first cathode material layer, and compressing the as-deposited first cathode material layer and the second cathode material layer to achieve a desired porosity.

The invention relates to a high performance super capacitor and a manufacturing process thereof. The super capacitor comprises an electrode core, an electrolyte and a shell. The manufacturing process comprises steps that: tabs and leading-out terminals of the prepared electrode core positive and negative poles are welded; the electrode core with the well-welded leading-out terminals is encased in the shell; the shell with the electrode core encased is put in a vacuum drying furnace for vacuum drying; and finally a vacuum liquid filling sealing test is carried out. In an aspect of the electrode manufacturing method, the manufacturing process of the invention abandons a method which uses a solvent for assisted processing, thus to the greatest degree, the purity of the electrode material is ensured. In addition, during the production process, the manufacturing process of the invention has no drying energy waste and drying time constraint, and therefore reduces cost, reduces energy loss, and improves working speed. The manufacturing process of the invention further adopts an advanced assembly process to avoid problems such as secondary pollution and processing consistency in the traditional assembly technology, and greatly improves the stability of the super capacitor.

The invention discloses a patterned transparent electrode fabrication method. The method comprises the steps of (1) depositing a conductive nanoparticle dispersion solution on a porous filter membrane with a negative pattern mask to obtain a patterned transparent conductive film adhered on the porous filter membrane; and (2) removing the mask, transferring the patterned transparent conductive film on the porous filter membrane onto a transparent substrate, and removing the porous filter membrane to obtain the patterned transparent electrode; wherein the dispersion solution contains conductive nanoparticles 0.015wt% to 5wt%, dispersing agent 0.15wt% to 20wt%, and water in balance; and the dispersing agent is selected from arbitrary one or the combination of a surfactant, organic acid, high-molecular polysaccharide and DNA macromolecules. The method has the advantages of simple process, low cost and large material selection range, and can accurately design and control the formed pattern according to requirement.

The invention belongs to a electrochromic technology and relates to a flexible electrochromic device for regulating and controlling near-infrared light and a preparation method. The flexible electrochromic device is characterized by being formed by superposing 7 functional layers. The method comprises the preparation steps of manufacturing a counter electrode; manufacturing a work electrode; preparing a gel electrolyte; and assembling devices. The invention provides a preparation method of the flexible electrochromic device for regulating and controlling the near-infrared light. The transmittance of the device in a near-infrared region can be dynamically regulated and controlled.

The invention belongs to the field of flexible sensing and the field of micro-nano systems, and specifically relates to a method for manufacturing a flexible pressure sensor based on "V" groove array electrodes. The fabrication method of flexible pressure sensor based on "V"-shaped array electrodes, including the preparation of flexible pressure sensor "V"-groove array electrodes and the preparation of carbon nanotubes/PDMS polymers, two flexible pressure sensors "V" The groove array electrodes are used as the upper electrode and the lower electrode respectively, and the carbon nanotube/PDMS composite film is used as the intermediate dielectric layer, and the flexible pressure sensor is formed by packaging. Aiming at the problem of poor adhesion between metal materials and flexible substrates, the present invention selects polydimethylsiloxane (PDMS) as the flexible substrate material, metal Ag as the electrode material, and uses the plasma process to modify the surface of the PDMS flexible substrate The treatment is used to enhance the adhesion between metal Ag and PDMS, and the designed "V" groove array microelectrode structure effectively solves the problem of metal electrode fracture when the flexible pressure sensor undergoes large deformation.

The method is applicable to manufacture silicon semiconductor binistor with at least one PN junction such as GTO, IGBT etc. General manufacturing steps is carried out till the step of making metalized electrode. Platinum-silicon alloy is made on surface of silicon. Using proton or particle injection forms local high density defect area. Heating and annealing makes the defect area absorb platinum to convert to platinum impurity range. Then, General manufacturing steps is carried out till manufacturing completion. The performances of the invention are better than present life control technique. The parts made by the invention possesses higher switching speed and backward recovery speed, but the forward voltage drop and reverse leakage are not increased visibly.

The present invention provides a method of efficiently fabricating a large number of fiber electrodes at the same time from a large number of fibers while taking advantage of inherent characteristics of fiber electrodes.

A fiber electrode fabrication method according to the present invention includes: a step (2, 2a) of spreading a fiber tow; a step (3, 4, 5) of obtaining fiber positive electrodes or fiber negative electrodes by forming a positive electrode active material coating or a negative electrode active material coating on each of single fibers that are obtained by spreading the fiber tow; and a step (6, 6a) of forming a separator coating on the fiber positive electrodes or the fiber negative electrodes.

The present invention relates to a nano-porous electrode for a super capacitor and a manufacturing method thereof, and more specifically, to a nano-porous electrode for a super capacitor and a manufacturing method thereof wherein pores are formed on the surface or inside an electrode using an electrodeposition method accompanied by hydrogen generation, thereby increasing the specific surface area of the electrode and thus improving the charging and discharging capacity, energy density, output density, and the like of a capacitor. The method for manufacturing a nano-porous electrode for a super capacitor according to the present invention manufactures a nano-porous electrode using hydrogen generated by the electrodeposition as a template to minimize the amount of metal used, so that electrode manufacturing costs can be sharply reduced, the specific surface area of the electrode can be adjusted by a simple process, and also the charging and discharging capacity, energy density, output density, and the like of a capacitor can be improved by increasing the specific surface area.

It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon.

The present invention relates to “a binder for a lithium cell, the binder comprising polyacrylic acid cross-liked by a cross-linking agent selected from the compounds described in the general formulae [1] to [13] and the polymer described in the general formula [14] (provided that the one which includes a functional group-containing vinylidene fluoride-based polymer is excluded)”; a “composition for producing an electrode of a lithium cell, the composition comprising 1) an active material containing silicon, 2) a conductive assistant and 3) a cross-linked-type polyacrylic acid (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)”; and an “electrode for a lithium cell, the electrode comprising 1) an active material containing silicon, 2) a conductive assistant, 3) a cross-linked-type polyacrylic acid, and 4) a current collector (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)”.

Provided is a binder for secondary battery electrodes comprising a copolymer consisting of 79 to 98% by weight of at least one selected from the group consisting of (a) an ethylenically unsaturated carbonic acid ester monomer and (b) a vinyl monomer and a nitrile monomer, (c) 1 to 20% by weight of an ethylenically unsaturated carbonic acid monomer, and (d) 1 to 20% by weight of a phosphorus (P)-containing monomer including a P═O bond and one or more reactive double bonds in a molecular structure thereof, based on the total weight of the binder. The binder fundamentally improves stability of an electrode in the process of fabricating the electrode, thus providing secondary batteries with superior cycle properties.

The invention relates to a whole pollution-free manufacturing method for an electrode containing electrolyte salt. No water or solvent is led in a productive process of the electrode, accordingly purity of an electrode material is guaranteed to the maximum degree, and performance of an electrochemical device is improved. An inner wall of a pipe in a full-automatic powder transportation process is made of high-stability and high-wearing inorganic nonmetallic materials, and pollution caused by contact between electrode powder materials and metal is avoided. In all processes comprising powder handling and film processing, the electrode materials are not contacted with the metal in all processes. In addition, the electrolyte salt is evenly distributed in the electrode in an electrode manufacture process, only an electrolyte solvent is injected in a hollowing liquid injection process, and crystallographic problems of the electrolyte salt are solved. Simultaneously, the electrolyte solvent after liquid injection forms a high-speed ion motion channel inside the electrode in a process for dissolving the electrolyte salt, and power density of the electrochemical energy-saving device is greatly improved.

The present invention is aimed to provide a complex electrode for a lithium ion battery, consisting of: an electro-conductive current collector with porous three-dimensional network construction, the electrode active materials filled in the porous current collector, and a porous ionic conductive polymer binder coated in the pores of the current collector holding the electrode materials. In the abovementioned lithium ion battery complex electrode construction, the current collector connects with the electrode active materials through its highly porous three-dimensional backbone network and thus greatly improves the utilization of the electrode active materials and obtains high area density and low impedance of the electrode. Another objective of this invention is to disclose a novel electrode fabrication technique for lithium ion batteries.

Sulfur-based electrodes, and associated systems and methods for their fabrication, are generally described. Certain embodiments relate to sulfur-based electrodes with smooth external surfaces. According to some embodiments, relatively large forces can be applied to compositions from which the sulfur-based electrodes are made during the fabrication process. In some such embodiments, the compositions can maintain relatively high porosities, even after the relatively large forces have been applied to them. Methods in which liquids are employed during the electrode fabrication process are also described.

The invention discloses a non-noble metal catalytic electrode, a film electrode and a preparation method of the non-noble metal catalytic electrode, wherein a catalytic layer on the surface of an electrode diffusion layer of the non-noble metal catalytic electrode is formed by thermally treating a precursor mixture of a catalytic layer material at the high temperature and growing or loading a catalytic ingredient on the electrode diffusion layer, the precursor mixture of the catalytic layer material comprises a transition metal precursor, a carbon source material and a nitrogen source material, the catalytic layer is porous ordered large-specific surface area non-platinum high-nitrogen carbon based catalytic ingredient containing transition metal, the catalytic activity is mainly from a multi-component system comprising carbon, nitrogen and the transition metal, a catalytic region is porous and highly ordered, has the characteristic of high hydrophobicity and the excellent performanceof conduction of gas and electrons, the integrally direct forming preparation method directly loads or grows a catalytic activity component on the surface of the electrode diffusion surface at one time, the time is saved, the production steps of the electrode are simplified, the waste of a catalyst is avoided, and the preparation method has the advantages of simple preparation, low cost and excellent performances.

Electrodeposited copper foils having adequate puncture strength to withstand both pressure application during consolidation with negative electrode active materials during manufacture, as well as expansion/contraction during repeated charge/discharging cycles when used in a rechargeable secondary battery are described. These copper foils find specific utility as current collectors in rechargeablesecondary batteries, particularly in lithium secondary battery with high capacity. Methods of making the copper foils, methods of producing negative electrode for use in lithium secondary battery andlithium secondary battery of high capacity are also described.

The invention relates to the technical field of secondary batteries, in particular to an electrode, an electrolyte thin layer and a preparation method thereof. An electrode is prepared from a halide solid electrolyte material, the solid electrolyte material is LiaMXb, M is one or more of Al, Ga, In, Sc, Y and La series, X is one or more of F, Cl and Br, a is greater than or equal to 0 and less than or equal to 10, and b is greater than or equal to 1 and less than or equal to 13. According to the invention, the ionic conductivity, the chemical/electrochemical stability and the plasticity can beremarkably improved; and in the manufacturing process of the electrode and the electrolyte, inert atmosphere protection is not needed, the method is very compatible with a traditional electrode manufacturing technology, the process is simple, the cost is low, the large-scale production capacity is extremely achieved, and therefore the commercial application value is extremely achieved.

The invention relates to a method and a device for quickly fabricating an electrode. The method comprises the following steps: fabricating a gypsum part prototype, with completely the same shape as the electrode, as a female mold through three-dimensional printing, and then pouring copper liquid or graphite liquid in vacuum condition, cooling and solidifying the copper liquid or graphite liquid to form the electrode. The method can be used for quickly fabricating electrodes with complicated shapes, and is high in speed and low in cost; and the complicated die splicing process is omitted, the electrode forming is high in precision and high in speed, and the process is simple and applicable to production and processing of single and small-batch special-type electrodes in the electrode manufacturing industry.

Various methods of fabricating circuit devices are provided. In one aspect, a method of fabricating a circuit device on a substrate is provided. The method includes forming a doped silicon structure on the substrate and forming a hemispherical grain silicon film on the silicon structure. The substrate is heated from a first temperature to a second temperature while undergoing exposure to a dopant gas to add a dopant to the hemispherical grain silicon film. The method provides for improved capacitor electrode fabrication via concurrent gas exposure and substrate temperature ramp-up. In this way, dopant gas is introduced before the doped silicon structure transitions from an amorphous state to a polycrystalline state.

The invention relates to a 3D manufacturing method for an electrode of an in-plane switching blue phase liquid crystal display device. The electrode may go deep into the blue phase liquid crystal to reduce a driving voltage. By way of layered manufacturing, the method comprises the steps: (1) designing a three-dimensional digital model; (2) performing an approximating process on the three-dimensional digital model to eliminate an irregular free surface, and converting the model into an STL format that can be accepted and operated by a 3D printer; (3) hierarchically slicing the model into a series of two-dimensional cross-sectional graphs; (4) preparing electrode printing paste; (5) printing the electrode by a 3D printing apparatus, and performing 3D molding on materials by curing or hardening; (6) performing a subsequent process on the printed electrode to form a desired electrode of the in-plane switching blue phase liquid crystal display device. The 3D manufacturing method, with great manufacturing flexibility, effectively reduces the complexity in and the cost of manufacturing the electrode of the in-plane switching blue phase liquid crystal display device.

Provided are novel electrodes for use in lithium ion batteries. An electrode includes one or more intermediate layers positioned between a substrate and an electrochemically active material. Intermediate layers may be made from chromium, titanium, tantalum, tungsten, nickel, molybdenum, lithium, as well as other materials and their combinations. An intermediate layer may protect the substrate, help to redistribute catalyst during deposition of the electrochemically active material, improve adhesion between the active material and substrate, and other purposes. In certain embodiments, an active material includes one or more high capacity active materials, such as silicon, tin, and germanium. These materials tend to swell during cycling and may loose mechanical and/or electrical connection to the substrate.; A flexible intermediate layer may compensate for swelling and provide a robust adhesion interface. Provided also are novel methods of fabricating electrodes containing one or more intermediate layers.

To provide an electrode and working electrode substrate capable of detecting a sample substance, and a manufacturing method capable of producing the electrode by simply operations, the present invention provides, in a photocurrent detection electrode, an adhesive layer containing linker molecules interposed between an electrode body constituted by a semiconductor for receiving electrons released from a test substance by photoexcitation, and a metal layer constituted by a metal.

The invention belongs to the field of plasma technology and relates to the improvement of the production method of the electrode of a dielectric barrier discharge plasma generator. The production method is characterized in that a metal electrode is deposited on an insulating dielectric material by ion implantation and deposition equipment, and the production method comprises the following steps of: cleaning the insulating dielectric material; adhering a mask adhesive tape; installing the sputtering target of the ion implantation and deposition equipment; installing an accelerating grid; and carrying out the ion implantation of a film for aiding the deposition of a metal electrode bar. The invention can overcome the defect that the electrode bar which is adhered manually is thicker and has large heating quantity, can improve the discharge effect of the generator, greatly increases the bond strength of the electrode bar with a matrix material, prevents the electrode bar from falling off, and prolongs the service life of the generator.