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 anode for a lithium secondary battery according to exemplary embodiments may include an anode current collector and an active material layer formed on at least one surface of the anode current collector and having a value of pore resistance to density within a predetermined range. Accordingly, it is possible to secure both high-capacity characteristics and high speed charging stability, thus to further improve capacity and efficiency of the lithium secondary battery.

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 exemplary embodiment in the present disclosure relates to an electrode assembly capable of suppressing the occurrence of a short of a battery including an insulation film, a secondary battery including the electrode assembly, a battery module, and a battery pack. The electrode assembly includes an electrode laminate in which a cathode and an anode are alternately stacked with a separator as a boundary, a porous insulation film surrounding four or more sides of the electrode laminate, in which two of both ends of the insulation film are adhered on a side surface of the electrode laminate.

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: 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 for a secondary battery including: a current collector, and a negative electrode active material layer formed on the current collector and containing a first negative electrode active material having a large particle size and a second negative electrode active material having a small particle size, wherein the second negative electrode active material is contained in an amount of 10% by weight or less based on the total weight of the negative electrode active material, and the following Relational Equation 1 is satisfied: [Relational Equation 1] 0.4<D2/D1<0.7; wherein D1 and D2 are the particle sizes (D50, ?m) of the first and second negative electrode active materials, respectively.

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 is a negative electrode for a secondary battery including: a current collector; and a negative electrode active material layer including a negative electrode active material, formed on the current collector, with the negative electrode satisfying Relation 1: 3.0<?*DP<7.2 ??[Relation 1] with i a tortuosity of the negative electrode, and DP a pellet density (g/cm3) of the negative electrode active material, measured by pressing the negative electrode active material at 8 kN/cm2. Also provided is a secondary battery including the same.

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).

Abstract: A battery cell includes a case, accommodating an electrode assembly therein, and a connection unit formed to have a tube shape and having one end bonded to an external surface of the case. The case includes a projection formed to protrude outwardly, and the projection is disposed in an internal surface of the connection unit.

Abstract: An anode active material for a secondary battery according to an embodiment of the present invention includes first particles serving as a core active material and second particles attached on surfaces of the first particles. A weight of the second particles based on 100 weight parts of a total weight of the first particles and the second particles satisfies a predetermined relation. A secondary battery including the anode active material is provided.

Abstract: Provided is a fabrication method of an electrode for a secondary battery including coating an electrode slurry containing an electrode active material and a binder on a current collector; drying the current collector on which the electrode slurry is coated to form an electrode active material layer; and surface-treating the electrode active material layer formed on the current collector to remove a binder layer on a surface of the electrode active material layer.

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 for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on the anode current collector. The anode active material layer including a lower anode active material layer formed on the anode current collector and an upper anode active material layer formed on the lower anode active material layer. Each of the lower anode active material layer and the upper anode active material layer includes a first anode active material and a second anode active material having a hardness less than that of the first anode active material. A total intrusion amount of mercury to pores having a diameter of 3 nm to 10 ?m in the anode active material layer measured by a mercury porosimeter is 0.27 ml/g or more.

Abstract: An anode active material for a lithium secondary battery according to an embodiment of the present invention includes a carbon-based particle, and a coating layer bonded to at least a portion of a surface of the carbon-based particle. The coating layer includes boron and a conductive material. An electrolyte decomposition reaction is suppressed by the coating layer, and capacity and life-span of the battery can be improved.

Abstract: An anode active material according to an embodiment of the present invention includes a first graphite particle and a second graphite particle having a different particle diameter from that of the first graphite particle. A ratio of a pellet density relative to a. tap density of the anode active material is from 1.3 to 1.45. A particle deformation of the anode is suppressed to achieve a lithium secondary battery having improved long-term and high-energy properties.

Abstract: Provided are a pouch case for a pouch type secondary battery in which one corner is in close contact with a cooling plate and a pouch type secondary battery including the same. In the pouch case, by controlling a shape relation among a forming portion formed to have a non-zero depth determined in advance at a center to accommodate one side of an electrode assembly, a receiving portion in surface contact with a side surface of the electrode assembly at the time of sealing the pouch case, and a sealing portion for sealing opposing ends of the forming portion and the electrode assembly, a size of a sealing protrusion formed after the electrode assembly is packaged through mechanical properties of a metal laminate sheet and a simplified die and punch may be minimized.