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: A positive electrode active material particle according to one aspect of the present invention may include a lithium composite oxide particle and a coating material including a coating element, in which the lithium composite oxide particle is a secondary particle formed by aggregation of two or more primary particles, the coating material is included on a surface of the secondary particle, the coating material is included in a grain boundary between the primary particles, calcium (Ca) is included in the positive electrode active material particle, and a calcium (Ca) content X included in the positive electrode active material is 0.003 mol %?X?0.03 mol %.

Abstract: A positive electrode active material precursor according to one aspect of the present invention may be a precursor including a plurality of hydroxide particles, and may satisfy Relational Expression 1 below in an XRD pattern obtained through Rietveld fitting as a result of X-ray diffraction (XRD) analysis using a CuK? ray: 0.82 ? FWHM ( 1 ? 0 ? 2 ) ? 1.22 , [ Relational ? Expression ? 1 ] wherein a positive electrode active material precursor according to one aspect of the present invention may be also a precursor including a plurality of oxide particles, and may satisfy Relational Expression 2 below in an XRD pattern obtained through Rietveld fitting as a result of X-ray diffraction (XRD) analysis using a CuK? ray: 127 ? XRD ? peak ? Integral ? breadth / 4 ? tan ? ? ? 137 , [ Relational ? Expression ? 2 ] wherein, in above Relational Expression 1, said FWHM(102) means a full width at half maximum (FWHM(deg.

Abstract: A positive electrode active material according to one aspect of the present invention may be a lithium composite oxide, and may satisfy Relational Expression 1 below in an XRD pattern obtained through Rietveld fitting as a result of X-ray diffraction (XRD) analysis using a CuK? ray: 0.110?FWHM(104)?0.170,??[Relational Expression 1] wherein the positive electrode active material according to one aspect of the present invention may include: preparing a first lithium composite oxide by primarily heat-treating a first mixture including the prepared oxide precursor, a lithium-containing compound, and a first cobalt-containing compound.

Abstract: A two-terminal memory device includes: a substrate; an extended drain extending from a drain and a lower surface of the drain and laminated on the substrate; a ferroelectric layer connected to the drain and covering the extended drain and the substrate; and a source laminated on the ferroelectric layer to face the drain.

Abstract: The lithium battery according to various aspects of the present invention can form a LiF-rich SEI that has excellent mechanical, chemical, and electrochemical stability and can induce uniform lithium ion flow, thereby effectively suppressing lithium dendrite formation and enabling excellent battery performance even after hundreds of charge and discharge cycles.

Abstract: The present disclosure relates to a three-dimensional (3D) data augmentation method using a weighted local transformation and an apparatus for the same. More specifically, the present disclosure relates to a method and apparatus of significantly augmenting 3D data required to improve the performance of an artificial intelligence model with only limited 3D data by applying a non-rigid transformation to local part(s) of the 3D data.

Abstract: Disclosed are a separator for fuel cells capable of minimizing the volume of a system and the use of sealants, and a stack for fuel cells, more particularly, a stack for solid oxide fuel cells, including the same. Specifically, by adding a metal sheet having a specific shape, position and size to the separator, the stress applied to the sealant can be uniformized, and thus the oxidizing agent and fuel can be separated and electrically isolated using only a piece of sealant. Therefore, the stack for fuel cells is characterized in that there is no variation in temperature, reactant concentration, power, or the like between respective unit cells, so delamination and microcracks do not occur, the volume is minimized, and the power density per unit volume is very high.

Abstract: Disclosed is a self-assembled complex containing copper ions, including: copper ions; and one or more ligands, in which the ligands and the copper ions are reversibly self-assembled or self-degraded, and when there are a plurality of types of ligands or a plurality of ligands, the shape of the self-assembled complex is formed differently depending on the blending ratio of the ligands.

Abstract: Disclosed are a separator for fuel cells capable of minimizing the volume of a system and the use of sealants, and a stack for fuel cells, more particularly, a stack for solid oxide fuel cells, including the same. Specifically, by adding a metal sheet having a specific shape, position and size to the separator, the stress applied to the sealant can be uniformized, and thus the oxidizing agent and fuel can be separated and electrically isolated using only a piece of sealant. Therefore, the stack for fuel cells is characterized in that there is no variation in temperature, reactant concentration, power, or the like between respective unit cells, so delamination and microcracks do not occur, the volume is minimized, and the power density per unit volume is very high.

Abstract: Disclosed herein are a fuel cell manifold and a fuel cell stack including the same. The manifold may include a cover plate, an air guide plate configured to guide a flow of air in the manifold, a fuel guide plate configured to guide a flow of fuel in the manifold, and an auxiliary plate providing a passage for inflow of air and outflow of fuel.

Abstract: The present disclosure provides a separator for a fuel cell, including a central part with a rectangular shape, and a surrounding part disposed to surround the central part, wherein the surrounding part includes an outlet manifold positioned at a pair of edges of the central part, which are opposed each other, and an inlet manifold positioned along a side of the central part to be adjacent to another edge except for the pair of edges at which the outlet manifold is positioned, and the central part includes a plurality of guide patterns that are spaced apart from each other to guide fluids introduced through the inlet manifold toward the outlet manifold.

Abstract: Disclosed is a fuel cell with improved thermal distribution in a stack including two more unit cells stacked therein. The fuel cell includes a stack including the two more unit cells and separators each having manifolds formed through four sides thereof, a first chamber having an internal space so as to receive air and fuel from the outside and to transfer the air and fuel to a second chamber and so as to receive the air and fuel discharged from the stack and to discharge the air and fuel to the outside, a second chamber having an internal space so as to receive the air and fuel from the first chamber and to transfer the air and fuel to the stack, and a connecting part connecting the first chamber to the second chamber so as to allow the air and fuel to flow to the second chamber from the first chamber.

Abstract: This application relates to a separator for a fuel cell and a fuel cell stack with improved durability, which contains the same, particularly to a solid oxide fuel cell stack. Specifically, this application allows an oxidizer and a fuel to flow in a counter-flow manner and a cross-flow manner in the fuel cell stack by forming an outlet manifold and an inlet manifold to have a specific shape, location and size in the separator. As a result, interlayer peeling, microcracking, etc. are prevented because no variation in temperature, reactant concentration, power, etc. occurs between each unit cell and the power density per unit volume is significantly improved because the volume is minimized.

Abstract: Disclosed is a fuel cell with improved thermal distribution in a stack including two more unit cells stacked therein. The fuel cell includes a stack including the two more unit cells and separators each having manifolds formed through four sides thereof, a first chamber having an internal space so as to receive air and fuel from the outside and to transfer the air and fuel to a second chamber and so as to receive the air and fuel discharged from the stack and to discharge the air and fuel to the outside, a second chamber having an internal space so as to receive the air and fuel from the first chamber and to transfer the air and fuel to the stack, and a connecting part connecting the first chamber to the second chamber so as to allow the air and fuel to flow to the second chamber from the first chamber.

Abstract: The present disclosure provides a separator for a fuel cell, including a central part with a rectangular shape, and a surrounding part disposed to surround the central part, wherein the surrounding part includes an outlet manifold positioned at a pair of edges of the central part, which are opposed each other, and an inlet manifold positioned along a side of the central part to be adjacent to another edge except for the pair of edges at which the outlet manifold is positioned, and the central part includes a plurality of guide patterns that are spaced apart from each other to guide fluids introduced through the inlet manifold toward the outlet manifold.

Abstract: This application relates to a separator for a fuel cell and a fuel cell stack with improved durability, which contains the same, particularly to a solid oxide fuel cell stack. Specifically, this application allows an oxidizer and a fuel to flow in a counter-flow manner and a cross-flow manner in the fuel cell stack by forming an outlet manifold and an inlet manifold to have a specific shape, location and size in the separator. As a result, interlayer peeling, microcracking, etc. are prevented because no variation in temperature, reactant concentration, power, etc. occurs between each unit cell and the power density per unit volume is significantly improved because the volume is minimized.

Abstract: A display apparatus includes a display panel, a first covering part, an upper frame and a lower frame. The first covering part is disposed on the display panel. The upper frame is disposed under the first covering part and includes a first combining portion. The lower frame is combined with the upper frame through the first combining portion, and overlaps a peripheral portion of the display panel.

Abstract: A display apparatus includes a display panel, a first covering part, an upper frame and a lower frame. The first covering part is disposed on the display panel. The upper frame is disposed under the first covering part and includes a first combining portion. The lower frame is combined with the upper frame through the first combining portion, and overlaps a peripheral portion of the display panel.

Abstract: A backlight assembly and a display device including the backlight assembly include a light source which emits light, a light guide plate disposed adjacent to the light source and which receives the light emitted from the light source, a light source supporter including a bottom plane including a first region and a second region, and a first receiving unit including a bottom surface and a side wall. The light source and the light guide plate are disposed on the first region of the bottom plane, the second region extends from a portion of the first region on which the light source is disposed, the bottom surface is disposed opposite the light guide plate, and the side wall is disposed at an end portion of the bottom surface along a direction perpendicular to a plane defined by the bottom surface.