Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater, DD (Degree of Divergence)=(Ia/Itotal)*100??[Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuK? ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuK? ray.

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 ?m to about 200 ?m and a particle-shaped conductive agent having a average long diameter of about 1 ?m to about 20 ?m, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater: DD (Degree of Divergence)=(Ia/Itotal)*100??[Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuK? ray, and Itotal is a sum of peak intensity at all angles measured by XRD using a CuK? ray.

Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.

Abstract: There is provided an electrode assembly including a first electrode laminate having at least one or more electrode units having a first area, stacked therein, a second electrode laminate having at least one or more electrode units having a second area smaller than the first area, stacked therein, and a step portion provided by stacking the first electrode laminate and the second electrode laminate in a direction perpendicular to a plane and having a step formed due to a difference in areas of the first and second electrode laminates, the electrode assembly being characterized in that, the electrode unit is wound by a rectangular-shaped separation film such that at least a portion of the rectangular-shaped separation film covers the step portion of the electrode assembly, and a step having a shape identical to the step portion is formed.

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 ?m to about 200 ?m and a particle-shaped conductive agent having a average long diameter of about 1 ?m to about 20 ?m, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater: DD (Degree of Divergence)=(Ia/Itotal)*100??[Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuK? ray, and Itotal is a sum of peak intensity at all angles measured by XRD using a CuK? ray.

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater, DD (Degree of Divergence)=(Ia/Itotal)*100??[Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuK? ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuK? ray.

Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.

Abstract: There is provided an electrode assembly including a first electrode laminate having at least one or more electrode units having a first area, stacked therein, a second electrode laminate having at least one or more electrode units having a second area smaller than the first area, stacked therein, and a step portion provided by stacking the first electrode laminate and the second electrode laminate in a direction perpendicular to a plane and having a step formed due to a difference in areas of the first and second electrode laminates, the electrode assembly being characterized in that, the electrode unit is wound by a rectangular-shaped separation film such that at least a portion of the rectangular-shaped separation film covers the step portion of the electrode assembly, and a step having a shape identical to the step portion is formed.

Abstract: Disclosed is an inner case of a battery module assembly in which four battery modules, each having a plurality of cylindrical secondary battery cells (hereinafter, also referred to as ‘cells’), are electrically connected in series. The inner case includes a side frame making contact with two facing sides among sides of the battery module assembly, an upper frame making contact with an upper surface of the battery module assembly, and an electrode post electrically connected to an electrode of the battery module assembly and located at a top of the upper frame. Therefore, it is possible to provide an inner case of a stable and economic battery module including a plurality of secondary battery cells.

Abstract: There is provided an electrode assembly including a first electrode laminate having at least one or more electrode units having a first area, stacked therein, a second electrode laminate having at least one or more electrode units having a second area smaller than the first area, stacked therein, and a step portion provided by stacking the first electrode laminate and the second electrode laminate in a direction perpendicular to a plane and having a step formed due to a difference in areas of the first and second electrode laminates, the electrode assembly being characterized in that, the electrode unit is wound by a rectangular-shaped separation film such that at least a portion of the rectangular-shaped separation film covers the step portion of the electrode assembly, and a step having a shape identical to the step portion is formed.

Abstract: There is provided a stacked and folded type electrode assembly in which at least two first electrode units having a first area and at least two second electrode units having a second area smaller than the first area are wound and stacked together with a rectangular separator. The electrode assembly includes: a first electrode stack in which the first electrode units are stacked; a second electrode stack in which the second electrode units are stacked; and a stepped portion formed by an area difference between the first electrode stack and the second electrode stack, wherein two or more layers of the separator cover the stepped portion, and the separator has the same shape as the stepped portion.

Abstract: Disclosed herein is an electrode assembly including two or more electrode plates, each of which has electrode tabs, and a separator plate disposed between the electrode plates and/or a one-unit separation sheet disposed between the electrode plates to cover side surfaces of the electrode plates, which constitute an electrode tab non-formation region, wherein the electrode plates are stacked in a height direction on the basis of a plane such that the electrode plates having opposite polarities face each other in a state in which the separator plate and/or the separation sheet is disposed between the electrode plates, a stack constituted by the electrode plates includes electrode plates having different sizes, and an absolute value of the difference in thickness between the electrode plates having different sizes facing each other is 0 to 79 ?m.

Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.

Abstract: A light emitting device includes a substrate including gallium nitride, and a semiconductor layer disposed on the substrate, the semiconductor layer including an n-type nitride semiconductor layer, an active layer disposed on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer disposed on the active layer, in which an angle defined between a crystal growth plane of the substrate and an m-plane thereof is in a range of 3.5° to 6.

Abstract: There are provided a method of manufacturing a jelly roll-type electrode assembly and a method of manufacturing a secondary battery using the electrode assembly. The method of manufacturing the electrode assembly includes notching a cathode and an anode, elongated in one direction, in a constant size and shape to form a plurality of electrode units, laminating the cathode and the anode with a separator disposed therebetween to form a unit cell, and winding the unit cell by bending the connection units so that the electrode units of the cathode and the anode overlap each other. In the manufacturing of the jelly roll-type electrode assembly and the polymer secondary battery, whose production process can be easily simplified, a jelly roll-type electrode assembly and a polymer secondary battery, both of which exhibit excellent design flexibility, can be manufactured.

Abstract: There is provided a stepped electrode assembly including: a first electrode stack including at least one first unit cell, the first unit cell including at least one positive electrode and at least one negative electrode having the same area and being alternately stacked in a vertical direction with a separator disposed therebetween; and a second unit cell including at least one positive electrode and at least one negative electrode that are alternately stacked in the vertical direction with a separator disposed therebetween, the second unit cell disposed on a side of the first electrode stack with a separator disposed therebetween, wherein the second unit cell includes a first area electrode having the same area as an electrode area of the first electrode stack and a second area electrode having an area different from the area of the first area electrode, wherein the second unit cell is a stepped unit cell including a stepped portion formed by an area difference between the first and second area electrodes.

Abstract: Disclosed is a battery module assembly, which includes four battery modules, each having a plurality of cylindrical secondary battery cells (hereinafter, also referred to as ‘cells’) interposed between an upper frame and a lower frame, wherein among the four battery modules, two battery modules are arranged in parallel, and two battery modules are stacked on the two battery modules arranged in parallel. Therefore, it is possible to provide a stable and economic battery module assembly including a plurality of secondary battery cells.

Abstract: There is provided an electrode assembly having increased degrees of structural freedom in the thickness direction thereof. The electrode assembly includes negative and positive electrodes alternately stacked with separators interposed therebetween, wherein the electrode assembly is formed by stacking N electrode stacks where N is a natural number equal to or greater than 2, each of the electrode stacks comprises electrodes having the same area and stacked with separators interposed therebetween, and neighboring electrode stacks of the electrode stacks have different electrode areas, wherein a first electrode stack of the electrode stacks is formed by stacking unit cells respectively including an odd number of electrodes, and the other electrode stacks stacked on the first electrode are formed by stacking unit cells respectively including an even number of electrodes.

Abstract: Disclosed is a case for a vehicle's battery pack. In an aspect of the present disclosure, it is possible to provide a stable and economic case for a battery pack including a plurality of secondary battery cells.

Abstract: A battery warm up system according to the present disclosure includes an open signal receiving unit to receive a door open signal for opening a door of a vehicle, a temperature measuring unit to measure a temperature of a battery pack connected to a starter of the vehicle, a control unit to output a forced discharging start signal by referring to information associated with the temperature measured by the temperature measuring unit when the door open signal is received by the open signal receiving unit, and a forced discharging circuit unit to force a plurality of battery modules constituting the battery pack to be discharged in response to the forced discharging start signal.