Abstract: A method for manufacturing a separator for an electrochemical device including a silicon-based negative electrode is provided. The method includes a step of forming a freestanding porous separator by simultaneously electrospinning a first spinning solution containing a polymer binder and a second spinning solution containing inorganic particles, wherein a flow rate of the second spinning solution is allowed to be greater than that of the first spinning solution such that a separator having compression resistance against expansion of the silicon-based negative electrode during charging and discharging is manufactured.

Abstract: Disclosed is a separator for an electrochemical device that includes a polymer substrate with small and uniform pores and an aqueous organic/inorganic composite porous coating layer and an adhesive coating layer and which is improved in compression resistance, and a method of making the separator and the electrochemical device including the separator. The separator with improved compression resistance is not easily deformed by well resisting pressure applied thereto during a lamination process in which an electrode and the separator are applied with heat and pressure so as to be bonded to each other. In addition, when pressure is applied, the coating layer serves as a buffer, thereby reducing the pressing force exerted on the porous substrate. Thus, deformation of the separator is inhibited.

Abstract: A separator for secondary batteries including a separator substrate having a porous structure, wherein the separator substrate comprises a polymer material. A coating layer is present on at least one surface of the separator substrate, wherein the coating layer includes a crystalline binder and an amorphous binder miscible with each other. The crystalline binder includes a first crystalline binder and a second crystalline binder, and an amount of the amorphous binder is 2 weight % to 5 weight % based on the total weight of a solid content of the coating layer, whereby the resistance in the coating layer of the separator is reduced and thus ionic conductivity is improved.

Abstract: A separator for an electrochemical device includes a porous polymer substrate; a first coating layer provided on at least one surface of the porous polymer substrate and containing a first polymer resin of a first solubility in an electrolyte; and a second coating layer provided on the first coating layer and including a second polymer resin of a second solubility in the electrolyte, and inorganic particles, wherein the first solubility is higher than the second solubility in the electrolyte, and the separator is provided on a negative electrode containing a silicon (Si).

Abstract: An electrode assembly according to an embodiment of the present invention may include: a cell stack part including a plurality of stacked unit cells provided by integrally coupling electrodes and separators, which are alternately stacked; and a sub unit cell which is stacked on the cell stack part and is provided with a polymer film at the outermost side thereof, and in which the electrodes and the separators, which are alternately stacked, are integrally coupled together with the polymer film. The polymer film may be flat or be concavely bent toward the cell stack part so that a distance between a reference plane, which connects both edges in a width direction, and a central portion is less than 1 mm. The polymer film may have a thickness equal to or greater than that of the separator.

Abstract: A battery cell pressurization device may include a housing in which battery cells are disposed in parallel, pressurizing plates alternately disposed with the battery cells and configured to heat and pressurize the battery cells in the housing, and a pressurizing driver configured to drive the pressurizing plates to pressurize the battery cells. Each pressurizing plate may include pressurizing protrusions and heating lines installed in the pressurizing protrusions on a side facing the respective battery cell.

Abstract: A separator for an electrochemical device, and an electrochemical device including the same are disclosed. The separator according to an exemplary embodiment of the present disclosure is a separator for an electrochemical device. The separator includes a porous polymer substrate and one porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer includes inorganic hydroxide particles, cellulose nanoparticles, and an aqueous binder polymer. The amount of the cellulose nanofibers is 25% by weight or more and 70% by weight or less based on the total weight of the porous coating layer.

Abstract: A separator for a lithium secondary battery, the separator including a separator substrate including a porous polymer resin and a heat resistance layer on at least one side of the separator substrate. The heat resistance layer includes a phenolic resin configured to be hardened when heated. The heat shrinkage at a high temperature is improved, and it is possible to prevent short circuit between electrodes.

Abstract: A separator for a lithium secondary battery. The separator for a lithium secondary battery is provided with a porous coating layer including small-particle diameter inorganic particles, large-particle diameter inorganic particles and adhesive polymer particles. The porous coating layer has a predetermined level of porosity. The separator has reinforced heat resistance, reduced resistance and improved peel strength to a porous polymer substrate.

Abstract: A separator for an electrochemical device including a porous separator substrate including a polymer material, and a porous coating layer coated on at least one surface of the porous separator substrate. The porous coating layer includes inorganic particles and a binder resin. The binder resin includes a mixture of polyvinyl acetate (PVAc) with an acrylic binder resin. The separator has improved wettability with an electrolyte by virtue of relatively high polarity of PVAc. In addition, it is possible to improve the peel force between the separator substrate and the porous coating layer by introducing PVAc and to reduce the thickness of the porous coating layer. Therefore, when introducing the separator to a battery, it is possible to improve the resistance characteristics, and to inhibit the porous coating layer from being spaced apart from the separator substrate or to inhibit the inorganic particles from being detached from the porous coating layer.

Abstract: The present invention relates to a safety-improved battery cell including a thermal expansion tape and a method of manufacturing the same, wherein a battery pack including multiple battery cells is configured such that heat generated during a charging/discharging process and internal gas generated thereby are discharged to outside of a battery cell by employing a thermal expansion tape. Thus, the present invention can improve safety of a pouch-type secondary battery pack by discharging gas generated in a pouch-type secondary battery. In addition, the present invention utilizes pressure of gas generated in the secondary battery and thus can be operable without provision of a separate device and an external power source. Moreover, the present invention can perform repetitive gas discharge due to a configuration of a fixing unit having thermal expansion properties.

Abstract: The present disclosure relates to a composite separator for an electrochemical element and the electrochemical element including the same. More specifically, the present disclosure relates to a separator with excellent durability and improved formation of a bonding layer of a thin film and improved bonding force with an electrode, and a method for manufacturing the same. Further, the present disclosure pertains to an electrochemical element comprising the aforementioned separator.

Abstract: Disclosed herein is a display apparatus. The display apparatus includes a display panel, a display chassis configured to support the display panel, and a cover provided on a rear side of the display chassis. The cover includes a cover body configured to cover a rear surface of the display chassis, and a plurality of magnets disposed on the cover body and configured to generate an attractive force such that the cover body is attached to the rear surface of the display chassis. The cover is configured to be coupled and fixed to at least a part of peripheries of the display chassis and the cover body. With this configuration, assembly efficiency of the display apparatus may be improved.

Abstract: The present invention relates to a safety-improved battery cell including a thermal expansion tape and a method of manufacturing the same, wherein a battery pack including multiple battery cells is configured such that heat generated during a charging/discharging process and internal gas generated thereby are discharged to outside of a battery cell by employing a thermal expansion tape. Thus, the present invention can improve safety of a pouch-type secondary battery pack by discharging gas generated in a pouch-type secondary battery. In addition, the present invention utilizes pressure of gas generated in the secondary battery and thus can be operable without provision of a separate device and an external power source. Moreover, the present invention can perform repetitive gas discharge due to a configuration of a fixing unit having thermal expansion properties.

Abstract: Disclosed is a novel benzimidazole compound having excellent hole injection and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which comprises the benzimidazole compound in one or more organic material layers thereof so as to thereby achieve enhanced characteristics, such as light-emitting efficiency, driving voltage, and lifespan.

Abstract: Disclosed herein is a display apparatus. The display apparatus includes a display panel, a display chassis configured to support the display panel, and a cover provided on a rear side of the display chassis. The cover includes a cover body configured to cover a rear surface of the display chassis, and a plurality of magnets disposed on the cover body and configured to generate an attractive force such that the cover body is attached to the rear surface of the display chassis. The cover is configured to be coupled and fixed to at least a part of peripheries of the display chassis and the cover body. With this configuration, assembly efficiency of the display apparatus may be improved.

Abstract: The present disclosure relates to a composite separator for an electrochemical element and the electrochemical element including the same. More specifically, the present disclosure relates to a separator with excellent durability and improved formation of a bonding layer of a thin film and improved bonding force with an electrode, and a method for manufacturing the same. Further, the present disclosure pertains to an electrochemical element comprising the aforementioned separator.

Abstract: Disclosed is a novel benzimidazole compound having excellent hole injection and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which comprises the benzimidazole compound in one or more organic material layers thereof so as to thereby achieve enhanced characteristics, such as light-emitting efficiency, driving voltage, and lifespan.

Abstract: A method of playing back media data in a single operating system that supports a smart service and digital television (DTV) service is provided. The method includes loading the single operating system that supports the smart service and the DTV service, receiving, by a default media player included in the single operating system from an application, a request for playback of a target media data, determining a type of an identifier (ID) of the target media data, selecting, based on the type of the ID of the target media data, one player from among a video-on-demand (VOD) player and a DTV player different from the default media player, and playing back the target media data by the selected player.

Abstract: A smart set-top box (STB) that provides a smart service and a digital television (DTV) service using a single operating system may be provided. The STB may load applications designed based on an application programming interface (API) of a framework corresponding to the operating system, may load a DTV stack including a DTV service function and a security service function, and may allow communication between at least one of the applications and the DTV stack when the at least one of the applications uses a binder driver included in a kernel of the operating system so as to access the DTV service function included in the DTV stack.