Abstract: Disclosed herein are an electrode configured such that electrode mixture parts, each of which includes an electrode active material, and irreversible parts, each of which includes an irreversible additive, are alternately coated on one surface or both surfaces of a current collector to form an electrode pattern and a secondary battery including the same.

Abstract: A battery cell is configured to have a structure in which an electrode stack is configured to have a structure in which positive electrodes and negative electrodes are stacked in a height direction. Separators are disposed respectively between the positive electrodes and the negative electrodes, and when mounted in a battery case in a sealed state. The electrode stack is configured to have a structure in which a length in a height direction, which is a stacked direction of the electrode stack, on the basis of the ground is greater than that in a width direction perpendicular to the height direction, and the battery case is formed in the shape of a pipe corresponding to an outside of the electrode stack.

Abstract: Disclosed herein are a positive electrode active material including at least one selected from among compounds represented by Formula 1 below and a lithium secondary battery including the same that is capable of improving lifetime characteristics and rate characteristics while exhibiting excellent safety: xLi2MyMn(1-y)O3-zAz*(1?x)LiM?O2-z?A?z? (1), where M is at least one element selected from a group consisting of Ru, Mo, Nb, Te, Re, Ir, Pt, Cr, S, W, Os, and Po, M? is at least one element selected from a group consisting of Ni, Ti, Co, Al, Mn, Fe, Mg, B, Cr, Zr, Zn, and second row transition metals, A and A? are each independently a negative monovalent or divalent anion, and 0<x<1, 0.3<y<1, 0?z<0.5, and 0?z?<0.5.

Abstract: The present disclosure relates to a cable type secondary battery which includes: a cable type electrode assembly including an inner electrode, a separator layer formed to surround the outer surface of the inner electrode and preventing a short-circuit between electrodes, and an outer electrode formed to surround the separator layer; a taping layer formed by spirally winding a sheet type tape so that it surrounds the outer surface of the cable type electrode assembly; and a packaging formed to surround the outer surface of the taping layer. According to the present disclosure, it is possible to prevent separation of the separator layer or the outer electrode, and thus to reinforce the bending characteristics of the cable type secondary battery.

Abstract: The present disclosure relates to a cable-type secondary battery having improved performance and capable of alleviating stress caused by external force. The present disclosure provides provided a sheet-type electrode assembly which includes: an electrode array including an inner electrode, a first separator, a double-sided electrode, a second separator and an outer electrode stacked successively; and a support layer formed integrally on at least one surface of the electrode array by compression, and a cable-type secondary battery including the same.

Abstract: Disclosed is a cable-type secondary battery, including: a winding core; an inner electrode support wound on the outside of the winding core in the form of a spaced spring so that the winding core may be exposed partially; a sheet-type first inner electrode formed on the outside of the exposed winding core by spiral winding; a sheet-type first separation layer formed on the outside of the first inner electrode by spiral winding; a sheet-type second inner electrode formed on the outside of the first separation layer by spiral winding; a second separation layer formed on the outside of the second inner electrode by spiral winding; and an outer electrode formed on the outside of the second separation layer by spiral winding.

Abstract: The present disclosure provides a cable-type secondary battery which includes: at least one inner electrode; a separation layer formed to surround the outer surface of the inner electrode and configured to prevent a short of the electrodes; a sheet-type outer electrode surrounding the separation layer or the inner electrode and formed by spiral winding; and a polymer electrolyte coating layer formed to surround the sheet-type outer electrode, wherein the sheet-type outer electrode is formed by spiral winding to avoid an overlap.

Abstract: Disclosed is a lithium secondary battery including an electrolyte, an electrode laminate, a battery case including a space part in which the electrolyte and the electrode laminate are embedded, and a sealing part surrounding the space part, and a gas permeable membrane.

Abstract: Disclosed is a cable-type secondary battery, including: a winding core having guide portions formed by intaglio or relief in a spiral shape on the surface thereof; a sheet-type first inner electrode formed on the outside of the winding core surface between the guide portions by spiral winding; a sheet-type first separation layer formed on the outside of the first inner electrode by spiral winding; a sheet-type second inner electrode formed on the outside of the first separation layer by spiral winding; a second separation layer formed on the outside of the second inner electrode by spiral winding; and an outer electrode formed on the outside of the second separation layer by spiral winding.

Abstract: The present disclosure discloses a cable-type secondary battery combined with a signal wire, including: a cable-type secondary battery extending in a lengthwise direction and having a hollow interior; a signal wire unit inserted into the cable-type secondary battery and extending in the lengthwise direction of the cable; and a cable sheath covering the cable-type secondary battery.

Abstract: Disclosed is a method for manufacturing a cable-type secondary battery, which includes successively supplying a first electrode member, a separator ribbon and a second electrode member around a rod-shaped winding core, wherein a width of the first electrode member and a width of the second electrode member are respectively smaller than a winding circumference, and a width of the separator ribbon is greater than the winding circumference.

Abstract: The present disclosure provides a cable-type secondary battery which includes: a cable-type electrode assembly comprising an inner electrode and a separation layer surrounding the outer surface of the inner electrode to prevent a short-circuit between electrodes; and a sheet-form outer electrode surrounding the outer surface of the cable-type electrode assembly, and satisfies the mathematical formula of C?W (wherein C is the circumference of the section perpendicular to the longitudinal direction of the cable-type electrode assembly, and W is the width of the sheet-form outer electrode).

Abstract: The present invention provides an electrode for a secondary battery, more specifically an electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on at least one surface or the whole outer surface of the current collector; a conductive material-coating layer formed on the top surface of the electrode active material layer and comprising a conductive material and a first polymer binder; and a porous coating layer formed on the top surface of the conductive material-coating layer and comprising a second polymer binder. Also, the present invention provides a secondary battery and a cable-type secondary battery comprising the electrode.

Abstract: Provided herein are a positive electrode for a secondary battery and a secondary battery including the same. The positive electrode includes a positive electrode active material layer including a positive electrode active material, a conductive material, and a dispersant, wherein the conductive material includes bundle-type carbon nanotubes, units of which have an average strand diameter of 15 nm or less, and the positive electrode active material layer has a packing density of 3.0 g/cc or more, and has an average pore diameter of 0.1 ?m to 0.5 ?m at the packing density when a pore size distribution is measured by mercury intrusion porosimetry, and thus may exhibit excellent electrolyte wetting properties. As a result, when the positive electrode is applied to a battery, wetting time of the positive electrode is shortened, and an area of the positive electrode that is not filled with an electrolyte is reduced, resulting in enhanced battery performance.

Abstract: The present invention provides a negative electrode for a secondary battery, the negative electrode including a negative electrode current collector, a first negative electrode active material layer located on the negative electrode current collector, and a second negative electrode active material layer located on the first negative electrode active material layer, such that resistance in the electrode is decreased due to an increase in adhesion between the negative electrode current collector and the active material and cohesion between the active materials, thereby significantly improving capacity and lifespan characteristics of a battery, a method of fabricating the same, and a secondary battery including the same.

Abstract: A method of the present invention includes measuring a thickness of an electrode in which an active material layer is formed on a current collector (Step 1); fixing the active material layer of the electrode to a substrate (Step 2); attaching a removal tape to the current collector of the electrode, and then measuring an adhesive strength of the removal tape and measuring a thickness of the electrode after the removal (Step 3); attaching a removal tape to the active material layer from which the current collector is removed, and then measuring an adhesive strength of the removal tape and measuring the thickness of the electrode after the removal, wherein this procedure is repeated until a measurement limit is reached (Step 4); and determining a distribution of a binder according to the thickness of the electrode from measured values obtained in Steps 3 and 4 (Step 5).

Abstract: The present disclosure is intended to reduce the resistance of a high-loading electrode, to improve the impregnation ability of an electrolyte and thus to improve the rate characteristics of a battery.

Abstract: The present disclosure provides a cable-type secondary battery, which has a packaging formed skin-tightly on the outer surface of an electrode assembly to improve flexibility significantly even when external force is applied to the cable-type secondary battery, and to prevent a decrease in capacity of the battery, thereby providing improved cycle life characteristics. The cable-type secondary battery comprises an electrode assembly comprising an electrode assembly comprising an inner electrode, a separator layer formed to surround the inner electrode, and an outer electrode formed to surround the outer surface of the separator layer; and a packaging surrounding the electrode assembly, wherein the packaging surrounds the top surface and the bottom surface of the electrode and a portion of the packaging is overlapped at an end thereof and sealed by heat compression, and the overlapped part is folded along the perimeter of the packaging to be a wing portion.

Abstract: Provided are an anode including spherical natural graphite having a surface coated with an amorphous carbon layer, wherein a crystal orientation ratio is in a range of 0.06 to 0.08 at a compressed density of 1.40 g/cc to 1.85 g/cc, and a lithium secondary battery including the anode. Initial efficiency, electrode adhesion, and capacity characteristics of the lithium secondary battery may be improved by using the anode of the present invention in the lithium secondary battery.

Abstract: Provided is a sheet type separation layer-electrode composite including a current collector, an electrode active material layer formed on one surface of the current collector, and a porous first support layer formed on an upper surface of the electrode active material layer, and a secondary battery and a cable type secondary battery including the same.