Abstract: A battery cell is formed by winding a first electrode plate, a separator, and a second electrode plate, the first electrode plate includes a first current collector, a first active substance layer disposed on a surface of the first current collector, and at least one first tab; the first active substance layer is provided with a first groove, and the first tab is disposed in the first groove and electrically connected to the first current collector; the second electrode plate includes a second current collector, a second active substance layer disposed on a surface of the second current collector, and at least one second tab; and the second tab and the second current collector are integrally formed.

Abstract: A battery cell includes a first electrode plate, a second electrode plate, and an insulating adhesive. The first electrode plate includes a first current collector, a first coating, and a first active layer, the first coating is disposed between the first current collector and the first active layer and includes a thermal expansion material. The first electrode plate and the second electrode plate are wound at intervals, the first electrode plate is the outermost electrode plate of the battery cell and further includes a first end which is a winding ending end, a surface of the first current collector at the first end facing toward the center of the battery cell is provided with the first active layer. The insulating adhesive includes a first sub-insulating adhesive disposed on a surface of the first current collector on the outermost side of the battery cell facing away from the first active layer.

Abstract: An electrode assembly, a battery, and an electricity-consumption device are provided. The electrode assembly includes a negative electrode, a separator, and a positive electrode. The separator is disposed on one side of the negative electrode, the separator includes a substrate and an adhesive layer, and the adhesive layer is disposed on a surface of the substrate. The adhesive layer includes first polymers, and the first polymers are copolymers of vinylidene fluoride and hexafluoropropylene. The positive electrode is disposed on one side of the separator away from the negative electrode, and the positive electrode includes a current collector layer and an active material layer that are stacked. The active material layer is disposed on a surface of the current collector layer and is disposed facing the adhesive layer. The active material layer includes active particles and second polymers.

Abstract: Disclosed is an apparatus for testing the thermal-state conduction performance of an electrical penetration piece of a high-temperature gas-cooled reactor. The apparatus includes a testing mechanism. The testing mechanism includes a base, a test portion arranged on the base. According to the apparatus for testing the thermal-state conduction performance of the electrical penetration piece of the high-temperature gas-cooled reactor, a threaded rod is rotated to drive a winding column to rotate to tension an insulating rope, and the insulating rope is tensioned to drive a copper pipe to be contracted to be in close contact with pins, so that the connection of the pins of the electrical penetration piece is completed. Through the testing portion, the conduction performance of the electrical penetration piece of a primary circuit of an absorption ball system can be tested in the helium atmosphere at 160° C.

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.

Abstract: An electrochemical device includes an electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator. A plurality of first tabs are disposed on the first electrode plate. The separator is disposed between the first and second electrode plates. The first electrode plate, the separator, and the second electrode plate are stacked and wound. The first tabs are connected to a region of the first electrode plate other than first inner layers and first outer layers. The first inner layers include N layers along a direction from a start layer to an end layer of the first electrode plate. The first outer layers include M layers starting from the end layer of the first electrode plate along a direction from the end layer to the start layer of the first electrode plate, where M?1, and N?3.

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The electrolyte solution includes fluoroethylene carbonate and a trinitrile compound. Based on a mass of the electrolyte solution, a mass percent of the fluoroethylene carbonate is A %, satisfying: 4? A?10, and a mass percent of the trinitrile compound is B %, satisfying: 1?B?3. A positive active material of a positive electrode includes a metal element M. The metal element M includes at least one of Ti, Mg, or Al. A content of the metal element M in the positive active material is C ppm. C and B satisfy: 7?C×B/1000?27.

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.

Abstract: An electrochemical apparatus includes a battery cell formed by a first electrode plate, a separator, and a second electrode plate through winding, where the first electrode plate includes a current collector, a tab, and an active substance layer. The current collector includes a first surface facing toward the interior of the battery cell and a second surface facing away from the interior of the battery cell; the tab is electrically connected to the current collector and extends out of the current collector; and the active substance layer is provided on the first surface and the second surface of the current collector. A winding start end of the first electrode plate is provided as a single-sided zone, an insulating coating is provided on the first surface of the current collector located in the single-sided zone, and the active substance layer is provided on the second surface.

Abstract: A winding-type lithium ion battery includes an electrode assembly; the electrode assembly includes a first electrode plate, a separator, and a second electrode plate that are successively stacked and wound; the first electrode plate includes a first current collector and multiple first tabs electrically connected to the first current collector; the second electrode plate includes a second current collector and multiple second tabs electrically connected to the second current collector; the electrode assembly is flat, and a notch S is provided at least one corner of the electrode assembly.

Abstract: The present disclosure provides an electrode plate, a battery cell, and a battery. The electrode plate includes a current collector, a plurality of first electrode tabs, and a plurality of second electrode tabs. The current collector has first and second sides and the first electrode tabs are coupled to the current collector and protrude from the first side. The second electrode tabs, also coupled to the collector, protrude from the second side. The first and second electrode tabs on the electrode plate being arranged on opposite sides of the current collector reduce the internal resistance of the electrode plate, and the energy output efficiency of the electrode plate is improved. The accumulation of heat when the electrode plate is working is reduced. Energy is output at both sides of the electrode plate, which improves the performance of the electrode plate.

Abstract: A three-way catalyst having low NH3 formation is disclosed. The catalyst includes a carrier and a coating material. The coating material includes a precious metal active component and a catalytic material. The precious metal active component includes a first precious metal active component and a second precious metal active component. The first precious metal active component is a composition containing Ru. The second precious metal active component is a composition containing Pt, Pd and Rh. Alternatively, the second precious metal active component is a composition containing Pd and Rh.

Abstract: A battery cell, including a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active layer, the first electrode plate includes a first end portion, the first end portion is arranged on an outer side of the battery cell, and the first active layer is arranged on a surface of the first current collector in the first end portion. The first electrode plate and the second electrode plate are spaced apart and wound, and an electrode plate at the outermost circle of the battery cell is the first electrode plate. A first end face, and a first cambered zone connected to the first end face are defined. The first end portion is disposed in the first cambered zone. Also, a battery and electronic apparatus using the battery cell.

Abstract: A battery cell is formed by winding a first electrode plate, a separator, and a second electrode plate, the first electrode plate includes a first current collector, a first active substance layer disposed on a surface of the first current collector, and at least one first tab; the first active substance layer is provided with a first groove, and the first tab is disposed in the first groove and electrically connected to the first current collector; the second electrode plate includes a second current collector, a second active substance layer disposed on a surface of the second current collector, and at least one second tab; and the second tab and the second current collector are integrally formed.

Abstract: A gummed paper comprises a first substrate having an uncovered region on an upper surface thereof; and a second substrate, in which in a thickness direction, a projection of the second substrate partially covers a projection of the first substrate, a dyne value of an upper surface of the second substrate is greater than or equal to 40 dyn/cm, and a dyne value of the uncovered region is less than the dyne value of the upper surface of the second substrate.

Abstract: A battery cell includes a first electrode plate, a second electrode plate, and an insulating adhesive. The first electrode plate includes a first current collector, a first coating, and a first active layer, the first coating is disposed between the first current collector and the first active layer and includes a thermal expansion material. The first electrode plate and the second electrode plate are wound at intervals, the first electrode plate is the outermost electrode plate of the battery cell and further includes a first end which is a winding ending end, a surface of the first current collector at the first end facing toward the center of the battery cell is provided with the first active layer. The insulating adhesive includes a first sub-insulating adhesive disposed on a surface of the first current collector on the outermost side of the battery cell facing away from the first active layer.

Abstract: A cathode plate including a first winding end and a second winding end along a length direction. The cathode plate further includes a cathode current collector and a first cathode active layer. The first cathode active layer is arranged at a surface of the cathode current collector, and the first cathode active layer includes a first end portion located at the first winding end, and the first end portion has a first cutout or a first barrier layer provided at a margin area. This application further provides an electrode assembly including the cathode plate.

Abstract: The present disclosure provides a shooting interface switching method and apparatus, and a device and storage medium thereof, relating to the field of camera shooting technology. The method includes: displaying a first user interface that enables a shooting program to shoot a photo using a rear camera on a terminal; acquiring a first cover slide event indicating that the slide rear cover is slid out; and controlling, based on the first cover slide event, the shooting program to switch the first user interface to a second user interface that enables the shooting program to shoot a photo using a front camera.

Abstract: A gummed paper includes: a first adhesive layer, configured to adhere to an object; a first substrate, adhered to a surface of the first adhesive layer opposite to the object; a second adhesive layer, adhered to a surface of the first substrate opposite to the first adhesive layer; a second substrate, adhered to a surface of the second adhesive layer opposite to the first substrate; and a plurality of foaming agent particles, distributed in the first adhesive layer.

Abstract: The present disclosure provides an electrode plate, a battery cell, and a battery. The electrode plate includes a current collector, a plurality of first electrode tabs, and a plurality of second electrode tabs. The current collector has first and second sides and the first electrode tabs are coupled to the current collector and protrude from the first side. The second electrode tabs, also coupled to the collector, protrude from the second side. The first and second electrode tabs on the electrode plate being arranged on opposite sides of the current collector reduce the internal resistance of the electrode plate, and the energy output efficiency of the electrode plate is improved. The accumulation of heat when the electrode plate is working is reduced. Energy is output at both sides of the electrode plate, which improves the performance of the electrode plate.