Abstract: The present disclosure relates to a method of recycling a positive electrode active material and a recycled positive electrode active material prepared by the same. More particularly, the present disclosure relates to a method of recycling a positive electrode active material, the method including step A of fragmenting a waste battery including a positive electrode, a separator, and a negative electrode to form waste battery scraps; step B of removing the negative electrode by jetting compressed air onto the waste battery scraps; and step C of treating the waste battery scraps from which the negative electrode has been removed with a solvent to remove the separator and obtain positive electrode scraps, and a recycled positive electrode active material prepared by the method.

Abstract: Provided is a method for recovering and reusing an active material from a positive electrode scrap.

Abstract: A coil component includes: a body; a coil disposed within the body; and an insulating film covering at least a portion of the coil in the body, wherein the insulating film includes a copolymer including a repeating unit derived from a monomer containing an unsaturated bond and a repeating unit derived from a parylene monomer.

Abstract: A coil electronic component includes a body having one surface and the other surface, opposing each other, and a plurality of wall surfaces respectively connecting the one surface and the other surface of the body, first and second recesses, respectively formed in both end surfaces of the body opposing each other among the plurality of wall surfaces of the body, extending to the one surface of the body, a wound coil, embedded in the body, including first and second lead-out portions, a first external electrode disposed along an internal wall of the first recess and the one surface of the body and connected to the first lead-out portion, and a second external electrode disposed along an internal wall of the second recess and the one surface of the body and connected to the first lead-out portion. The first and second external electrodes are spaced apart from each other.

Abstract: A coil component includes a body having one surface and the other surface and a plurality of wall surfaces, first and second insulating substrates spaced apart from each other, first and second recesses disposed in both end surfaces of the body and extending to one surface of the body, first and second coil portions disposed on the first and second insulating substrates, one ends and the other ends of the first and second coil portions being exposed to the first and second recesses, first and second external electrodes disposed along an inner surface of the first recess and one surface of the body and connected to one ends of the first and second coil portions, and third and fourth external electrodes disposed along an inner surface of the second recess and one surface of the body and connected to the other ends of the first and second coil portions.

Abstract: A coil component includes a body having one surface and another surface opposing each other, opposing end surfaces each connecting the one surface and the other surface to each other, and opposing side surfaces each connecting the end surfaces to each other. An internal insulating layer is embedded in the body, and a coil portion is disposed on at least one surface of the internal insulating layer and includes the first and second lead-out portions. The body has a recess disposed in each end surface of the body to expose the first and second lead-out portions. First and second external electrodes each include a connection portion disposed in the recess to be connected to a respective one of the first and second lead-out portions, and each include a pad portion disposed on the one surface of the body. A filling portion fills the recess and covers the connection portion.

Abstract: A coil component includes a body having one surface and another surface opposing each other, opposing end surfaces each connecting the one surface and the other surface to each other, and opposing side surfaces each connecting the end surfaces to each other. An internal insulating layer is embedded in the body, and a coil portion is disposed on at least one surface of the internal insulating layer and includes the first and second lead-out portions. The body has a recess disposed in each end surface of the body to expose the first and second lead-out portions. First and second external electrodes each include a connection portion disposed in the recess to be connected to a respective one of the first and second lead-out portions, and each include a pad portion disposed on the one surface of the body. A filling portion fills the recess and covers the connection portion.

Abstract: A coil component includes a body having one surface and the other surface and a plurality of wall surfaces, first and second insulating substrates spaced apart from each other, first and second recesses disposed in both end surfaces of the body and extending to one surface of the body, first and second coil portions disposed on the first and second insulating substrates, one ends and the other ends of the first and second coil portions being exposed to the first and second recesses, first and second external electrodes disposed along an inner surface of the first recess and one surface of the body and connected to one ends of the first and second coil portions, and third and fourth external electrodes disposed along an inner surface of the second recess and one surface of the body and connected to the other ends of the first and second coil portions.

Abstract: A coil electronic component includes a body having one surface and the other surface, opposing each other, and a plurality of wall surfaces respectively connecting the one surface and the other surface of the body, first and second recesses, respectively formed in both end surfaces of the body opposing each other among the plurality of wall surfaces of the body, extending to the one surface of the body, a wound coil, embedded in the body, including first and second lead-out portions, a first external electrode disposed along an internal wall of the first recess and the one surface of the body and connected to the first lead-out portion, and a second external electrode disposed along an internal wall of the second recess and the one surface of the body and connected to the first lead-out portion. The first and second external electrodes are spaced apart from each other.

Abstract: A magnetic field shielding structure includes a magnetic layer and a resonance reactive shielding circuit including a capacitor and a conductor connected to the capacitor and having a loop form. At least a portion of the magnetic layer overlaps an area surrounded by the conductor in a thickness direction of the magnetic layer.

Abstract: A magnetic sheet includes a first region and a second region disposed adjacent to each other on a same surface, wherein the first region includes first crack lines formed in a first direction, and the second region includes second crack lines formed in a second direction.

Abstract: A coil component includes a body having one surface and another surface opposing each other, opposing end surfaces each connecting the one surface and the other surface to each other, and opposing side surfaces each connecting the end surfaces to each other. An internal insulating layer is embedded in the body, and a coil portion is disposed on at least one surface of the internal insulating layer and includes the first and second lead-out portions. The body has a recess disposed in each end surface of the body to expose the first and second lead-out portions. First and second external electrodes each include a connection portion disposed in the recess to be connected to a respective one of the first and second lead-out portions, and each include a pad portion disposed on the one surface of the body. A filling portion fills the recess and covers the connection portion.

Abstract: A magnetic sheet for a communications module includes a magnetic material. The magnetic sheet includes crushed cracks in a first region and a second region disposed adjacent to the first region. Degrees of crushed cracks are different in the first region and the second region.

Abstract: A magnetic sheet includes a magnetic layer, a heat radiation layer having a prominence and a depression formed in a surface and that faces the magnetic layer, and an adhesive layer disposed between the magnetic layer and the heat radiation layer, and including a heat radiation filler that has shape anisotropy.

Abstract: A wireless power charging system includes a reception coil unit including an insulating layer, a first coil including a first body portion disposed as a spiral on one surface of the insulating layer and a first lead portion extending from one end of the first body portion and led out of the insulating layer, and a second coil including a second body portion formed on the other surface of the insulating layer and electrically connected to the other end of the first body portion through a via and a second lead portion extending from the second body portion and led out of the insulating layer. The second coil has a width larger than that of the first coil and has a thickness smaller than that of the first coil.

Abstract: An antenna device includes: a magnetic portion comprising a first surface and a second surface opposing the first surface; and a coil portion including a conductive wiring comprising a plurality of turns wound around the magnetic portion in a solenoid form, wherein in the coil portion, intervals between turns of the conductive wiring disposed on the first surface and intervals between turns of the conductive wiring disposed on the second surface are different from each other. Therefore, a recognition rate of the antenna device may be improved.

Abstract: A magnetic sheet includes a first region and a second region disposed adjacent to each other on a same surface, wherein the first region includes first crack lines formed in a first direction, and the second region includes second crack lines formed in a second direction.

Abstract: A magnetic field shielding structure includes a magnetic layer and a resonance reactive shielding circuit including a capacitor and a conductor connected to the capacitor and having a loop form. At least a portion of the magnetic layer overlaps an area surrounded by the conductor in a thickness direction of the magnetic layer.

Abstract: A wireless power transmission module includes a coil portion having a spiral form and including a hollow portion; and a magnetic portion including a coil accommodation portion in which the coil portion is disposed, the coil accommodation portion being formed as a hollow space in an upper surface of the magnetic portion, and having a bowl form having a greatest width at the upper surface of the magnetic portion; and a magnetic field concentration portion protruding upwardly from a central portion of the coil accommodation portion through the hollow portion of the coil portion.

Abstract: A sheet for shielding against electromagnetic waves includes a first magnetic material having a plurality of through holes formed in a thickness direction, and a second magnetic material filling the plurality of through holes and blocking a frequency band different from that of electromagnetic waves blocked by the first magnetic material.