116results about "Electrode extrusion" patented technology

Embodiments described herein relate generally to semi-solid electrodes, and methods of producing the same. In some embodiments, a method of forming a semi-solid electrode can include mixing an active material, a conductive material, and an electrolyte solvent to produce a semi-solid material. The electrolyte solvent is free of electrolyte salt. The method further includes dispensing the semi-solid material onto a current collector and wetting the semi-solid material with an electrolyte solution to form the semi-solid electrode. In some embodiments, the wetting can be via spraying. In some embodiments, the electrolyte salt can have a concentration in the electrolyte solution of at least about 1 M, at least about 2 M, or at least about 3 M. In some embodiments, the solvent can include ethyl methyl carbonate (EMC), ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), gamma-Butyrolactone (GBL), or any combination thereof.

A slot die coater includes an intermediate block, a first block facing one side of the intermediate block, a second block facing an opposite side of the intermediate block, a first spacer between the first block and the intermediate block, the first spacer having a first discharge port, and a second spacer between the second block and the intermediate block, the second spacer having a second discharge port, wherein a pair of first inner surfaces on opposite sides of the first discharge port, respectively, have first protruding lines extending along a lengthwise direction of the first discharge port, each of the first protruding lines having a first height.

The application provides a membrane preparation device, a pole piece manufacturing equipment and a membrane preparation method. The membrane preparation device comprises a mixing mechanism, a first feeding mechanism, a second feeding mechanism and an extrusion die. The first feeding mechanism is used for adding a powder mixture containing a powder and a first binder into the mixing mechanism. The second feeding mechanism is used for adding a solution containing a second binder into the mixing mechanism. The mixing mechanism is used for mixing the powder mixture and the solution. The extrusion die is connected to the discharge end of the mixing mechanism and is used for extruding a membrane. When the membrane preparation device is applied to the preparation of an active material layer membrane of a pole piece, the mixing uniformity and the distribution uniformity of the active material mixture can be effectively improved, and the proportion of the active material can be increased. Therefore, the production quality of the pole piece is effectively improved, and the energy density of the battery is effectively improved.

A negative electrode manufacturing device for a secondary battery includes a dual slot die having an upper block, a middle block, and a lower block, a first slot provided through a gap between the upper and middle blocks and a second slot provided through a gap between the middle and lower blocks. The first and second slots discharge a first negative electrode slurry. The device further includes a coating roll opposite the first and second slots that transfers an electrode sheet coated with the negative electrode slurry discharged from each slot. The upper block, the middle block, and the lower block include an upper lip, a middle lip, and a lower lip forming an outlet at a front end of each block. The upper and lower lips exhibit a magnetism of a same polarity, and the middle and upper lips exhibit a magnetism having an opposite polarity.

The present invention relates to the field of electrochemical cells, a mother unit and a method for preparing said cells. The electrochemical cells have a structure comprising at least 2 units. Each unit comprises at least one thermoplastic electronically conductive collector layer, at least one anode layer, at least one electrolyte layer and at least one cathode layer.

A manufacturing device of a fiber-type electrode includes: a bath including a coagulant; a transport portion including a supply roll provided outside the bath, a take-up roll provided inside the bath to be immersed in the coagulant, and a winding roll provided outside the bath, and configured to transport a fiber-type substrate; and a nozzle between the supply roll and the take-up roll. The nozzle includes a guide pipe that provides a moving passage of the fiber-type substrate, an inner main body around the guide pipe and that provides a central axis space in which an active material solution is supplied, and an outer main body around the inner main body and that provides a peripheral space in which a polymer solution is supplied.

A method and a device are proposed for manufacturing a ribbon electrode, the ribbon electrode being manufactured comprising a ribbon current collector coated on both sides with a layer of electrode material and having on both sides an area extending along one of its longitudinal edges that is not coated with electrode material, in which a ribbon metal foil (100) is coated with the electrode material in a continuous process, a number of parallel strips (120) of electrode material are applied to a first side of the ribbon metal foil (100) and an equal number of parallel strips (110) of electrode material are applied to a second side of the ribbon metal foil (100), so that in a line of sight perpendicular to the ribbon metal foil (100), in each case one strip on the first side (120) overlaps one of the strips on the second side (110) of the ribbon metal foil (100). On both sides between directly adjacent parallel strips of electrode material (110, 120), non-coated strip-like areas (111, 121) remain free of electrode material. The method is characterized in that the parallel strips of electrode material (110, 120) are simultaneously applied to the first and second sides of the ribbon-shaped metal foil (100).

Provided are a coating die head and a coating apparatus for an electrode sheet. The coating die head is provided with a feed inlet (111), a first flow equalizing cavity (11210), flow channels (11220), and a plurality of coating ports (1410); the first flow equalizing cavity (11210) extends in a first direction and is communicated with the feed inlet (111); the plurality of coating ports (1410) are arranged at intervals in the first direction; and the flow channels (11220) are configured to communicate the first flow equalizing cavity (11210) with the plurality of coating ports (1410). In the direction of the coating ports (1410) moving away from the feed inlet (111), the minimum lengths of the flow channels (11220) between the coating ports (1410) among the plurality of coating ports (1410) and the first flow equalizing cavity (11210) show a decreasing trend.

A slot die coater includes a first die block, a second die block below the first die block, a third die block below the second die block, a first spacer between the first die block and the second die block, the first spacer defining a first slot through which a first slurry is to be discharged, the first spacer including a first base, first and second sub-guides extending from opposite sides of the first base, respectively, in a first slurry discharge direction, and an amount of the first slurry to be discharged from the first slot being determined based on shapes of the first and second sub-guides, and a second spacer between the second die block and the third die block, the second spacer defining a second slot through which a second slurry is to be discharged.

The present invention relates to a method for producing a thick electrode film having a layer thickness of 100 μm or more and 600 μm or less for a secondary alkali ion energy storage device, the method comprising the steps of: a) preparing a dispersion comprising at least one solvent and solids, the dispersion having a total solids content of 40 wt. % or more and 80 wt. % or less, the solids comprising an active material, one or more conductive additives, and one or more binders, and mixing butanediol into the dispersion at a concentration of 2 wt. % or more and 10 wt. % or less, based on the total weight of the dispersion; b) coating the dispersion in a layer thickness of 200 μm or more and 1200 μm or less; and c) drying the coated dispersion to obtain an electrode film. The present invention also relates to the use of the method according to the present invention for producing an electrode film, and to an electrode film having a layer thickness of 100 μm or more and 600 μm or less, and having a specific composition.

Disclosed is a facility for manufacturing electrodes. According to an embodiment of the present disclosure, the facility for manufacturing electrodes may a heating roll which includes a heating roll shaft extending in a longitudinal direction and a heating roll contact surface rotatably coupled to the heating roll shaft about the heating roll shaft; a slot die disposed to face the heating roll while being spaced apart therefrom, and configured to dispense a slurry; a roll heating unit configured to heat the heating roll contact surface; and an electrode drying unit which includes a drying housing and a heater positioned inside the drying housing.

Novel composites for use in battery anode electrodes are described. The novel composites include silicon-based nanostructures attached to a carbon-based substrate having a polymer disposed thereon, the polymer including monomeric units formed from styrene and allyl alcohol. The composites allow for the preparation of anode electrodes having low ratios of inactive materials to active materials, with improved processability according to both wet and dry anode coating techniques. Anode electrodes including the composites have improved uniformity and are more apt at accommodating volume changes during cycling.

Embodiments described herein relate generally to semi-solid slurries made with a mechanically compacted powder, and more particularly methods for preparing semi-solid slurries with a higher solid ratio (e.g., greater than 50% by volume of the slurry) which enables more stable production of batteries with high energy density. Described herein is a method for fabricating a semi-solid electrode and an electrode material. The method involves blending an active material with a conductive material to form an intermediate material, which is then compacted to form a compacted material. This compacted material is subsequently mixed with an electrolyte to form a semi-solid slurry. In some embodiments, the compacted material includes a plurality of agglomerates formed from the electrochemically active material. The method further includes applying the semi-solid slurry onto a current collector material to form a semi-solid electrode.

Provided herein are solid-state cathode compositions and processes for making the solid-state cathode compositions.

A method of manufacturing a battery includes providing a slurry including carbon nanotubes, a binder, and a solvent. The ultrasonic homogenizer is then operated to form a suspension containing the carbon nanotubes and the binder within the solvent. A layer of suspension is then applied to the current collector of the cell. Finally, an electrode coating of the battery is applied to the layer of suspension while applying the layer of suspension to the current collector.

The application discloses a secondary battery high-viscosity slurry coating method and device. The coating method is as follows: after the coating substrate sequentially passes through a slurry gap in a vacuum environment and a discharge gap for controlling the thickness of the coating slurry, the coating substrate is coated, and a uniform pole piece is obtained. The discharge gap is arranged on the basis of the slurry cavity. The coating device comprises a coating back roller, a coating member is arranged on the coating back roller, the coating member and the outer periphery of the coating back roller form a gap for coating the coating substrate, the coating member comprises a vacuum cavity and a slurry cavity which are communicated with the slurry gap for first coating the coating substrate, and a coating substrate leading-in mechanism is arranged at the end of the vacuum cavity away from the slurry cavity; a slurry inlet is arranged on the slurry cavity, and a casing at the end of the slurry cavity away from the vacuum cavity and the coating back roller form a discharge gap for re-coating. The device has the advantages of simple structure, convenient operation and the ability to effectively and uniformly coat high-viscosity slurry.

The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and / or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and / or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and / or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

A method for manufacturing a cathode electrode of a battery cell comprises supplying a dry powder mixture, comprising an active material, a conductive additive, and a binder, to a first extruder; mixing the active material, the conductive additive, and the binder in the first extruder; partially fibrillating the binder in the first extruder; feeding a mixture from the first extruder to a first inlet of a second extruder; feeding a solvent to a second inlet of the second extruder; mixing the active material, the conductive additive, the binder, and the solvent in the second extruder; fibrillating the binder in the second extruder; and forming an active material layer using an extrusion die located at an outlet of the second extruder.

An electrode precursor composition for an alkali metal ion secondary cell is described. The electrode precursor composition comprises: a polymer-electrolyte gel matrix phase, a dispersed phase comprising an electrochemically active material, and a conductive additive. The conductive additive comprises a mixture as a majority component, the mixture consisting of tubular carbon material and sheet carbon material. An electrode of the same composition, a method of producing said electrode, an electrochemical secondary cell incorporating said electrode, and electrochemical energy storage device incorporating said cell are also described.

A coating device and an electrode manufactured by the coating device are disclosed. A coating device includes a first discharge port configured to discharge a first slurry on a substrate to form a first coating layer, and a second discharge port that is spaced apart from the first discharge port and configured to discharge a second slurry on the first coating layer to form a second coating layer, and the first discharge port has a narrower width than the second discharge port.

Provided are a coating die head and a coating device for an electrode sheet. The coating die head is provided with a feeding port (111), a first flow equalizing cavity (11210), flow channels (11220), and a plurality of coating ports (1410); the first flow equalizing cavity (11210) extends in a first direction and is communicated with the feeding port (111); the plurality of coating ports (1410) are arranged at intervals in the first direction; and the flow channels (11220) are configured to communicate the first flow equalizing cavity (11210) with the plurality of coating ports (1410). Since the minimum cross-sectional areas of the flow channel (11220) between the plurality of coating ports (1410) and the first flow equalizing cavity (11210) are sequentially increased in the direction from the coating ports (1410) close to the feeding port (111) to the coating ports (1410) distant from the feeding port (111), the pressure lost by the slurry flowing to the coating ports (1410) distant from the feeding port (111) during the flow process is lower than the pressure lost by the slurry flowing to the coating ports (1410) close to the feeding port (111), thereby improving the uniformity of slurry coating in the coating process.

A slot die coater and an electrode coating device including the same are disclosed. The slot die coater according to one embodiment of the present invention is an apparatus configured to discharge a coating material onto a surface of a substrate, and includes a first die having a first surface, a second die having a second surface facing the first surface, and a shim plate interposed between the first surface of the first die and the second surface of the second die and configured to form a slot through which the coating material is discharged, and the second die includes a pair of guide lips protruding from both ends of an opening of the slot toward the substrate.

The present invention provides a method for manufacturing electrode films for solid-state batteries, a method for manufacturing electrode blocks for solid-state batteries, and a self-supporting electrolyte film. [Solution] A method for manufacturing an electrode film for a solid-state battery comprises the steps of: preparing a powder mixture comprising at least one type of electrode active material, at least one type of fibrillable binder, and at least one type of dry electrolyte powder, wherein the at least one type of dry electrolyte powder is 5 to 30% by weight of the powder mixture; fibrillating the at least one type of fibrillable binder in the powder mixture by exposing the powder mixture to a shearing force; and pressing the powder mixture to form a self-supporting film.

A composition comprising a non-spherical powdery crosslinked polymer obtained by grinding, the crosslinked polymer comprising the monomer units 1,3 butadiene, (hydroxyethyl) methacrylate and trimethylolpropane trimethacrylate, the non-spherical powdery crosslinked polymer having a particle size D(90) of 180 to 450 μm. The composition further comprises a silica caking inhibitor. The composition is used as a binder in the anode of a storage battery.

This disclosure relates to an ultrasonic dispersion device and a slurry extrusion apparatus including the ultrasonic dispersion device. The ultrasonic dispersion device in the slurry extrusion apparatus includes: an ultrasonic probe in the outlet of the slurry extrusion apparatus, the ultrasonic probe being configured to irradiate the slurry in the slurry extrusion apparatus with ultrasonic waves; and a controller configured to control the ultrasonic irradiation by the ultrasonic probe.

To apply a liquid composition corresponding to the state of a non-application object surface to which the liquid composition is applied in an electrode manufacturing device.SOLUTION: An electrode manufacturing device comprises: an application unit that applies a liquid composition capable of forming an insulating layer onto an electrode substrate or onto a functional layer provided on the electrode substrate; an application control unit that controls the application unit; and a surface detection unit that detects a surface state of the liquid composition or the insulating layer formed of the applied liquid composition. The application control unit controls the application unit on the basis of the surface state detected by the surface detection unit.SELECTED DRAWING: Figure 6

The present disclosure relates to a composite electrode comprising a polymer containing carbon particles infiltrated by gallium or a gallium-indium alloy, a cathode electrode comprising silver oxide and a styrene-isoprene block copolymer (Ag 2 O-SIS) and a cathode current collector, and an anode electrode comprising gallium, carbon and a polymer and an anode current collector, a stretchable battery, wherein each of the cathode current collector and the anode current collector comprises a first current collector made of a composite material containing liquid metal eutectic gallium-indium (EGaIn), silver (Ag) and a styrene-isoprene block copolymer (SIS), and a second current collector layer made of carbon black (CB) and a styrene-isoprene block copolymer (SIS). The present disclosure also relates to a method for obtaining a composite electrode and a stretchable battery.

A dry powder kneading apparatus includes a main body including an inner space into which a mixture containing an active material, a conductive material, and a binder is supplied, and a screw inside the inner space of the main body, the screw being configured to move the mixture in one direction and to knead the mixture into fiberized dry powder, and a rotation torque of the screw being 1.4 kgf·m to 42 kgf·m.

A method for manufacturing electrodes includes, by an extruder that receives powder, mixing the powder to form a homogenous blend, injecting a lubricant into the homogenous blend to form a dough, and kneading the dough to form a fibrillated dough. The method further includes, by calender rollers, calendering chunks of the fibrillated dough to a target thickness to form a continuous plaque, by a laminating machine, laminating the plaque to opposite sides of a metal substrate to form a continuous electrode preform, by a dryer, drying the continuous electrode preform to form a dry continuous electrode preform, and by a cutting machine, sectioning the dry continuous electrode preform into electrodes.