416 results about "Electrode fabrication" patented technology

An electrode manufacturing apparatus according to one aspect of the present disclosure is configured to discharge a liquid to form a resin layer or an inorganic layer on an electrode substrate which is being conveyed in a predetermined direction. The electrode manufacturing apparatus includes a detector, a liquid discharger provided downstream of the detector in the predetermined direction and configured to discharge the liquid to form the resin layer or the inorganic layer, and a controller configured to control a discharge condition of the liquid discharger. Points where a property varies are present on the electrode substrate along a direction intersecting the predetermined direction. The detector outputs pieces of detection information obtained by detecting one of the points in time series, and the controller controls the discharge condition of the liquid discharger based on combined detection information obtained by combining the pieces of detection information.

The invention discloses a Prussian blue type composite positive electrode material and a preparation method and application thereof, and the Prussian blue type composite positive electrode material provided by the invention is composite powder containing a Prussian blue type positive electrode material, a conductive agent, a binder and a functional additive, the mass ratio of the Prussian blue positive electrode material to the conductive agent to the binder to the functional additive is (90-99): (1-5): (0-5): (0-0.5). According to the Prussian blue composite positive electrode material provided by the invention, the components are uniformly distributed, the Prussian blue composite positive electrode material has the characteristics of high compaction, easy dispersion, relapse resistance, high conductivity and the like, and the Prussian blue composite positive electrode material can be directly used for wet homogenization and can also be directly used for dry electrode manufacturing.

The invention belongs to the technical field of lithium ion batteries, and discloses a carboxyl-containing copolyimide binder, a lithium ion battery silicon negative electrode, a lithium ion battery and a preparation method, and polyamide acid is prepared by using a carboxyl-containing diamine monomer, an amino-terminated long aliphatic chain diamine monomer and an anhydride monomer as raw materials; and carrying out chemical imidization, precipitation and washing on the polyamide acid to obtain the carboxyl-containing copolyimide binder. The prepared carboxyl-containing copolyimide binder has good solubility in a conventional electrode manufacturing solvent, and the solution system of the obtained carboxyl-containing copolyimide binder is uniform and stable. When the carboxyl-containing copolyimide binder is applied to preparation of a silicon negative electrode of a lithium ion battery, the carboxyl-containing copolyimide binder can generate dual covalent interface interaction with silicon active material particles and conductive material particles, so that the migration efficiency of lithium ions in an electrode system is remarkably improved, the transmission dynamics performance is enhanced, and the high-rate charge-discharge capacity of the battery is effectively improved.

Various embodiments of the teachings herein include an apparatus for hyperspectral imaging of electrode webs during electrode manufacturing for battery cells. An example includes: a hyperspectral spectroscopy unit with a line scan camera for imaging, the spectroscopy unit configured: to capture hyperspectral images of the forward-moving electrode web at a predefined location of the electrode manufacturing, to ascertain inhomogeneities of the electrode web from the images, wherein an inhomogeneity is a deviation of the chemical composition of the layers or of the particle size distribution from predefined target variables, and to ascertain and save a local position of the inhomogeneities in the longitudinal direction of the electrode web; and a deflection roll over which the electrode web is guided. The line scan camera captures the images at the position of the contact surface between the deflection roll and the electrode web.

A device and method for manufacturing an electrode are disclosed. An electrode manufacturing device includes an electrode sheet supply roll transferring a pre-electrode sheet which forms a face and another face; a position adjustment roll adjacent to the electrode sheet supply roll and receiving the pre-electrode sheet from the electrode sheet supply roll; a laminating roll and a pressurizing roll which receive the pre-electrode sheet from the position adjustment roll and face each other; an active material supply roll facing the laminating roll and providing an active material to the laminating roll; and a heater proving heat to a heating area of the pre-electrode sheet positioned between the electrode sheet supply roll and the position adjustment roll. The pre-electrode sheet and the active material are inserted into and discharged from between the laminating roll and the pressurizing roll.

The present disclosure relates to an electrode for an electrochemical device, and more particularly, to a dry electrode and a method for manufacturing the same. According to an aspect of the present disclosure, there is provided a new method for manufacturing a dry electrode free of wrinkles in an uncoated portion having no electrode active material layer on a current collector.

The present invention relates to an electrode connection apparatus including a transfer unit configured to transfer a start portion of a standby electrode roll in a state of gripping the start portion, a leading unit configured to move upwards in a state of gripping the start portion of the standby electrode roll transferred by the transfer unit, a first connection unit configured to fix the standby electrode roll transferred by the leading unit, a second connection unit configured to fix an end portion of a moving electrode roll, and a taping unit configured to connect the standby electrode roll and the moving electrode roll to each other, whereby it is possible to automatically connect the electrode rolls to each other during an electrode manufacturing process performed as a roll-to-roll process.

To provide a manufacturing method for an electrode with high adhesion between a current collector and an active material layer.SOLUTION: A manufacturing method for an electrode for a secondary battery includes an unevenness forming step for forming unevenness on the surface of a metal foil which is a current collector, and an active material layer forming step for forming an active material layer by placing coated powder particles, formed by coating the surface of the active material powder particles with a non-aqueous binder, on the surface of the metal foil.SELECTED DRAWING: Figure 1

The utility model provides film pressing equipment and an electrode manufacturing system. The film pressing equipment comprises a film forming roller, a fixed roller, a first calendering roller and a second calendering roller which are sequentially arranged according to a material feeding sequence, wherein the circumferential surfaces of the film forming roller, the fixed roller, the first calendering roller and the second calendering roller are all provided with wear-resistant layers, and the thicknesses of the wear-resistant layers are sequentially increased according to the material feeding sequence; the wear resistance of the surfaces of the compression rollers is enhanced, the wear degree of the surfaces of the compression rollers is reduced, the wear degree of the compression rollers can be relatively balanced, the service life of the compression rollers can be prolonged, and the film pressing equipment is ensured to run for a long time with stable performance.

The present invention pertains to a binder for a secondary battery positive electrode, to a method of preparation of said electrode and to its use in a secondary battery. The invention also relates to the secondary batteries manufactured by incorporating said electrode.

To provide a disposing method of metal foil that reduces waste.SOLUTION: A disposing method of metal foil includes: winding up a long piece of metal foil that is left unused during electrode production while being suctioned to a winding core equipped with an air suction mechanism; and then stopping the suction to separate the metal foil from the winding core and recover the metal foil.SELECTED DRAWING: Figure 1

The present invention relates to an electrode manufacturing device and an electrode assembly manufacturing device including the electrode manufacturing device, the electrode manufacturing device including: a first electrode conveying unit, which is configured to convey a first electrode with an electrode coating formed on one surface or two opposite surfaces; a first cutter, which is configured to cut the first electrode conveyed by the first electrode conveying unit to form a first unit electrode; a first diaphragm conveying unit arranged on one side of the first electrode conveying unit, the first diaphragm conveying unit being configured to convey the first diaphragm; a first sensor unit, which is configured to sense the position of the first unit electrode; and a first alignment unit, which is configured to adjust the conveying speed of the outer periphery of the first unit electrode parallel to its conveying direction so as to adjust the interval between the first unit electrodes placed on one surface of the first diaphragm, wherein before the process of stacking and laminating electrodes with different polarities, it is determined whether the positive electrode and the negative electrode are aligned with each other, and then the positive electrode and the negative electrode are stacked, thereby preventing defective electrodes from being generated due to misalignment between the positive electrode and the negative electrode.

Disclosed is a dry electrode manufacturing apparatus. The dry electrode manufacturing apparatus may include: an adding portion to supply an electrode powder for dry electrode manufacturing; a guide chute through which the electrode powder supplied from the adding portion passes; a dispersion rod provided in the guide chute for dispersing the electrode powder and adjusting the particle size distribution; a driver for moving at least one selected from the group consisting of the guide chute and the dispersion rod by applying an external force; and a press roller for compressing the electrode powder having the particle size distribution adjusted by the guide chute and the dispersion rod into an electrode member in the form of a sheet having a set thickness.

The adhesion between the current collector and the electrode layer is improved, while reducing resistance at the interface between the current collector and the electrode layer. [Solution] The current collector 100 of this disclosure comprises a substrate 101 and a coating layer 102. The coating layer 102 includes a conductive material 103 and a binder 104. The conductive material 103 includes a carbon material. In the Raman spectrum of the coating layer 102, the G / D ratio, which is the ratio of the peak intensity of the G band to the peak intensity of the D band, is greater than 0.80 and less than 3.09.

One embodiment of the present invention provides a lithium secondary battery electrode comprising a current collector, and an electrode active material layer provided on the current collector, wherein, when a particle size distribution is measured on the upper side of the electrode active material layer, less than 24% of fractured particles having a particle size of less than 40% of the average particle size of electrode active material particles are present. One embodiment of the present invention provides a method for manufacturing a lithium secondary battery electrode and a device for manufacturing a lithium secondary battery electrode by using same, the method comprising the steps of: preparing a current collector; forming an electrode active material layer on the current collector so as to obtain a laminated electrode body; and rolling the electrode active material layer, wherein the rolling allows the laminated electrode body to be passed between a first rolling roller and a second rolling roller, and is performed so that at least a portion of the surface of the first rolling roller or the second rolling roller is coated with a buffer material, and the buffer material makes contact with the electrode active material layer.

The present invention pertains to a binder for a secondary battery positive electrode, to a method of preparation of said electrode and to its use in a secondary battery. The invention also relates to the secondary batteries manufactured by incorporating said electrode.

According to one embodiment of the present invention, an electrode powder for manufacturing a dry electrode for a secondary battery is provided, wherein the powder comprises an active material, a conductive material, and a binder, and has a resistivity of 700 Ω·cm or less when pressurized at a pressure of 50 MPa, a method for manufacturing the same, a method for manufacturing a dry electrode using the same, a dry electrode, a secondary battery including the same, an energy storage device, and a dry electrode manufacturing device.

A dry electrode manufacturing apparatus according to an embodiment of the disclosure includes a supply unit including a discharge port opened at a lower portion thereof and a feeding roller installed below the discharge port, a chute unit providing the electrode powder discharged from the discharge port onto a traveling current collector, and a squeezer flattening the electrode powder provided on the current collector, wherein a density of the flattened electrode powder in a traveling direction of the current collector can be adjusted according to an amount of the electrode powder supplied from the chute unit onto the current collector.

A system and method for producing a porous electrode with a high level of porosity, preferably mesoporosity, without the use of a binder. The electrode is formed by depositing a layer on a substrate from a colloidal suspension containing aggregated or agglomerated nanoparticles. Deposition methods include electrophoresis, ink-jet printing, doctor blade, roll coating, curtain coating, or dip-coating. The process includes drying and may involve additional consolidation steps such as pressing and / or heat treatment to enhance structural integrity, electrical conductivity, and adhesion. The heat treatment induces partial coalescence of nanoparticles, creating a three-dimensional porous structure that facilitates ion mobility. A thin coating of an electrically insulating or ion-conductive material may be applied to reduce interfacial reactions. The resulting porous electrode may be used in energy storage applications, such as lithium-ion batteries. The invention also includes a method for manufacturing batteries utilizing these electrodes and related battery designs.

The application provides an Ag etching solution, a preparation method and application thereof. The Ag etching solution comprises the following components in a weight ratio: 40-80 parts of inorganic acid; 10-50 parts of organic acid; 0.05-1.5 parts of corrosion inhibitor; 0.1-2 parts of chelating agent; 1-7.5 parts of buffer; and 30-50 parts of ultrapure water. The application further discloses a preparation method of the Ag etching solution and application thereof in the field of etching ITO-Ag-ITO composite layers. The inorganic acid is selected from one or more of phosphoric acid, sulfuric acid, carbonic acid, boric acid, hydrobromic acid, iodic acid, hypoiodous acid, hydrofluoric acid and nitric acid. The inorganic acid is preferably phosphoric acid and nitric acid. The Ag etching solution has a stable etching rate for ITO-Ag-ITO, and is not damaged to the insulating layer and photoresist, and can be used in the OLED pixel electrode manufacturing process, and the Ag layer is not provided with burrs and is not shrunk after etching.

The present technology provides an electrode manufacturing apparatus including an unwinder around which an electrode sheet is wound, a rewinder configured to recover and wind the electrode sheet, a plurality of guide rolls configured to guide the electrode sheet to be moved between the unwinder and the rewinder, a rolling device provided between the unwinder and the rewinder, and including an upper rolling roll and a lower rolling roll that are configured to roll the electrode sheet, and a conveyor transfer device configured to move a connection sheet attached to one of two parts of the electrode sheet that are separated from each other, in which the conveyor transfer device is configured to move the connection sheet through a rolling gap between the upper rolling roll and the lower rolling roll.

A composite substrate includes a polymer layer extending in a first direction, and a first metal layer and a second metal layer on opposite sides of the polymer layer, respectively, the opposite sides of the polymer layer being spaced apart from each other in a second direction that is a thickness direction of the polymer layer, wherein each of the first metal layer and the second metal layer protrudes farther than an end of the polymer layer, and wherein a first protrusion protruding from the first metal layer and a second protrusion protruding from the second metal layer are joined to each other.

The invention relates to an electrode drying apparatus, an electrode manufacturing apparatus, and an electrode drying method. The electrode drying apparatus includes: a dryer configured to form a dried active material layer by applying thermal energy to dry a fluid active material layer of an electrode active material slurry coated on a substrate moving in a first direction; a densimeter configured to measure a density of the fluid active material layer and a density of the dry active material layer; and a controller configured to control the dryer such that a magnitude of the thermal energy is adjusted based on a density change, which is a difference between the density of the fluid active material layer measured by the densitometer and the density of the dried active material layer.

A dry electrode manufacturing apparatus includes an input portion configured to supply electrode powder, a guide chute configured to pass the electrode powder supplied from the input portion, a dispersion rod disposed inside the guide chute and configured to undergo at least one of a linear motion or a rotational motion to disperse the electrode powder and adjust a particle-size distribution, a drive unit configured to provide power to the dispersion rod, and compression rolls configured to compress the electrode powder discharged from the guide chute into an electrode member in a sheet form having a desired thickness.

The present invention relates to a method for producing a method for manufacturing a semiconductor device comprising the steps of: (a) Formula Li 1+x TM 1-x providing a particulate lithiated transition metal oxide of O2, where x is in the range of 0 to 0.1, and Tm contains nickel and at least one of Co, Mn, and Al; (b) combining the lithiated transition metal oxide from step (a) with a conductive form of carbon; (c) exposing the mixture obtained in step (b) to a pressure in the range of 100 to 500 MPa for a period of 1 second to 1 minute, thereby causing cracks in at least a portion of the particles of the electrode active material; (d) mixing the mixture from step (c) with a binder polymer, optionally with additional conductive forms of carbon, and a solvent; (e) applying the mixture from step (d) to a metal foil; The present invention relates to a method for manufacturing an electrode, including:

The present invention presents a method of fabrication for a physiological sensor with electronic, electrochemical, and chemical components. The fabrication method comprises steps for manufacturing an apparatus comprising at least one electrochemical sensor, a microcontroller, and a transceiver. The fabrication process includes the steps of substrate fabrication, circuit fabrication, pick and place, reflow soldering, electrode fabrication, membrane fabrication, sealing and curing, layer bonding, and dressing. The physiological sensor is operable to analyze biological fluids such as sweat.

An electrode manufacturing apparatus according to one embodiment of the present invention includes a slit roll containing a knife for cutting electrodes, and at least one bracket located downstream in the electrode movement direction at a predetermined distance from the slit roll and facing the electrode, which includes a plurality of micro-holes for removing foreign matter resulting from cutting the electrode by the slit roll through the micro-holes.

The invention relates to a method for producing an electrode (10) for a lithium-ion cell, wherein the electrode (10) comprises a substrate film (12) and a paste (14) applied to the substrate film (12), the method comprising the following steps: (a) providing the paste (14) comprising a photoinitiator or providing a polymer (16) comprising a photoinitiator; (b) applying the paste (14) to the substrate film (12) or applying the polymer (16) prior to applying the paste (14) to the substrate film (12); and (c) irradiating a border-enclosing sub-region (TB) of the applied paste (14) with a polymerization light or irradiating the polymer (16) prior to applying the paste (14) with a polymerization light.

The invention discloses a method for preparing a porous titanium-based material with low mass transfer resistance by using magnetic field induction, and relates to the technical field of electrode manufacturing, and the method comprises the following steps: preparing titanium powder slurry containing magnetic components and titanium powder slurry without magnetic components, and preparing a double-layer or multi-layer composite structure from different slurries; directionally arranging the magnetic components by using a magnetic field; the sintering treatment enables the magnetic components to be decomposed or sintered to generate a directionally-arranged supporting structure, and the directionally-arranged supporting structure is obtained; and continuously sintering at the temperature higher than the first temperature interval, and pickling to remove the directionally arranged support structure to obtain the porous titanium-based material with the dual-scale pore structure, the problems that in the prior art, mass transfer efficiency is low, mass transfer resistance is large, a directional through pore structure is difficult to achieve, cooperative construction of pores with different pore diameters is difficult, the functionality of the pores is single, and the pores are prone to being polluted are solved.

An electrode manufacturing device includes a transfer part configured to move an electrode coated with an active material, a rolling part configured to roll the electrode, a marking part in front of the rolling part, the marking part configured to make a plurality of mark portions on the electrode, a measurement part configured to measure distances between the mark portions before rolling the electrode and after rolling the electrode, and a control part configured to calculate an extent of elongation by comparing measurement results of the measurement part.