Abstract: A lithium secondary battery includes a cathode including a cathode current collector and a cathode active material layer disposed on at least one surface of the cathode current collector, the cathode active material layer including a cathode active material including first cathode active material particles, each of which has a single particle shape; an anode facing the cathode; and a non-aqueous electrolyte including a non-aqueous organic solvent that contains a fluorine-based organic solvent, a lithium salt and an additive.

Abstract: A cathode for a lithium secondary battery according to embodiments of the present invention includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes first lithium metal oxide particles each having a secondary particle shape in which primary particles are aggregated and second lithium metal oxide particles each having a single particle shape. A cross-section of the cathode active material layer from an SEM satisfies Equations 1 and 2.

Abstract: The present invention provide a pouch type secondary battery and a method for manufacturing the same. More particularly, the present invention provides a pouch type secondary battery and a method for manufacturing the same, in which a pouch case is formed in a folding manner without being subjected to a forming process (press process), such that there is no limit in a length, and a thickness of an inner space of the pouch case is not limited.

Abstract: An electrode for a lithium secondary battery according to exemplary embodiments includes: an electrode current collector; an electrode active material layer which is formed on at least one surface of the electrode current collector, and includes electrode active material; and a polymer coating which is formed on the electrode active material or the electrode active material layer, and includes polyvinyl alcohol. The polyvinyl alcohol may have an IR spectral peak intensity ratio within a predetermined range. Accordingly, a secondary battery, in which a side reaction between the active material and the electrolyte may be prevented, and structural stability and cycle characteristics are improved, is provided.

Abstract: An organic light emitting device including: a substrate; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode and including an emission layer, wherein one of the first electrode and the second electrode is a reflective electrode and the other is a semitransparent or transparent electrode, and wherein the organic layer includes a layer having at least one of the compounds having at least one carbazole group, and a flat panel display device including the organic light emitting device. The organic light emitting device has low driving voltage, excellent current density, high brightness, excellent color purity, high efficiency, and long lifetime.

Abstract: The present invention provide a pouch type secondary battery and a method for manufacturing the same. More particularly, the present invention provides a pouch type secondary battery and a method for manufacturing the same, in which a pouch case is formed in a folding manner without being subjected to a forming process (press process), such that there is no limit in a length, and a thickness of an inner space of the pouch case is not limited.

Abstract: Provided is a lithium secondary battery. The lithium secondary battery includes a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a mixed negative electrode active material including graphite particles and low crystalline carbon-based particles, and the negative electrode active material layer has an apex of an exothermic peak in a temperature range of no less than 370° C. and no more than 390° C., as measured by differential scanning calorimetry (DSC).

Abstract: An anode active material for a secondary battery according to an embodiment of the present invention includes a core particle, a polymer coating formed on a surface of the core particle, and conductive particles formed on the polymer coating. The conductive particles have an average particle diameter greater than a thickness of the polymer coating. The anode active material and a secondary battery having improved stability and reduced resistance are provided using the polymer coating and the conductive particles.

Abstract: Provided is a negative electrode active material for a secondary battery including an active material in a bimodal form including small particles and large particles, in which the small particles are primary particles, and the large particles are secondary particles formed by granulating the primary particles.

Abstract: An organic light emitting device including: a substrate; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode and including an emission layer, wherein one of the first electrode and the second electrode is a reflective electrode and the other is a semitransparent or transparent electrode, and wherein the organic layer includes a layer having at least one of the compounds having at least one carbazole group, and a flat panel display device including the organic light emitting device. The organic light emitting device has low driving voltage, excellent current density, high brightness, excellent color purity, high efficiency, and long lifetime.

Abstract: An anode for a lithium secondary battery according to an embodiment of the present invention includes a current collector, and an anode active material layer coated on the current collector. The anode active material layer includes an anode active material that includes natural graphite particles, and has an electrode density of 1.50 g/cc or more. An XRD orientation index defined as I(004)/I(110) is 8 or less, I(004) is a peak intensity corresponding to a (004) plane of the anode active material obtained by an XRD measurement from the anode active material layer, and I(110) is a peak intensity corresponding to a (110) plane of the anode active material obtained by the XRD measurement from the anode active material layer.

Abstract: An electrode and a method of manufacturing the electrode are provided. The electrode includes an electrode current collector and an electrode active material layer on at least one surface of the electrode current collector. The electrode active material layer has a thickness of 200 ?m or more, and when the electrode active material layer is divided into three portions of a surface layer portion, a middle layer portion, and a lower layer portion in a thickness direction, a difference in porosity between the surface layer portion and the lower layer portion by XRM analysis is 10% or less.

Abstract: An anode active material for a secondary battery according to an embodiment of the present invention includes a core particle, a polymer coating formed on a surface of the core particle, and conductive particles formed on the polymer coating. The conductive particles have an average particle diameter greater than a thickness of the polymer coating. The anode active material and a secondary battery having improved stability and reduced resistance are provided using the polymer coating and the conductive particles.

Abstract: The lithium secondary battery includes a cathode which includes a cathode active material layer including a cathode current collector, a cathode tab protruding from one end thereof in a longitudinal direction of the cathode current collector, a second cathode portion disposed spaced apart from the cathode tab on the cathode current collector, and a first cathode portion disposed adjacent to the cathode tab on the cathode current collector and having an electrode density higher than that of the second cathode portion, and an anode disposed to face the cathode. Life-span characteristics of the lithium secondary battery may be improved by controlling the electrode density in the peripheral part of the cathode tab.

Abstract: According to embodiments of the present invention, an anode active material for a lithium secondary battery may include carbon-based particles and a first coating layer coupled to at least a portion of the surface of the carbon-based particles and including an inorganic material. In addition, the embodiments of the present invention provides an anode active material including a second coating layer which includes lithium titanic acid and is coupled to the surface of the carbon-based particles or at least a portion of a surface of the first coating layer.

Abstract: Provided is a negative electrode active material for a secondary battery including a carbon-based active material. The negative electrode active material satisfies the following Relational Expression 1, [Relational Expression 1] 0.1?(Dp?DT)/sphericity?0.28 where Dp is a pellet density (g/cm3) of the carbon-based active material, DT is a tap density (g/cm3) of the carbon-based active material, and the sphericity is a sphericity of a particle of the carbon-based active material.

Abstract: Provided are a pouch-type secondary battery, a manufacturing method thereof, and a pouch-type secondary battery manufactured therefrom. More particularly, a pouch-type secondary battery having an electrode assembly built therein wherein the pouch has an opening and one surface or both surfaces of the opening are sealed by a gas separation membrane including a porous substrate and a composite layer including a polymer, in which silver particles or a silver salt is dispersed, laminated on one surface or both surfaces of the porous substrate, a manufacturing method thereof, and a pouch-type secondary battery manufactured therefrom are provided.

Abstract: A display device includes a substrate including a display area to display an image and a pad area positioned around the display area; a first pad unit disposed on the pad area, and including a first terminal region having a plurality of first pad terminals arranged in a first direction; and a printed circuit board including a base film and a second pad unit positioned at one side of the base film, the second pad unit being coupled with the first pad unit by electrically connecting with the plurality of first pad terminals.

Abstract: The present disclosure relates to a negative electrode active material for a lithium ion secondary battery, a negative electrode, and a lithium ion secondary battery including the same. In the present disclosure, a crown ether-based host material which is a compound allowing selective coordination bonding with a lithium ion and having a similar cavity size to ions is included in the negative electrode active material, thereby suppressing lithium precipitation on the surface of the negative electrode active material to improve high rate charge/discharge characteristics of the battery, and also the crown ether-based host material solution is coated on the negative electrode active material layer of the battery to facilitate migration of lithium ions at high rate to improve an insertion/extraction speed of lithium ions during charge/discharge of the battery.

Abstract: Provided is a lithium secondary battery. The lithium secondary battery includes a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a mixed negative electrode active material including graphite particles and low crystalline carbon-based particles, and the negative electrode active material layer has an apex of an exothermic peak in a temperature range of no less than 370° C. and no more than 390° C., as measured by differential scanning calorimetry (DSC).