Abstract: A conductive composite material, a method of preparing the same, and a secondary battery including the same. The conductive composite material may increase the proportion of an active material when forming an electrode by chemically bonding a conductive material and a binder to each other. A method of preparing the conductive composite material comprises ionizing carbon-based particles in a predetermined polarity, ionizing PTFE particles in a polarity different from that of the carbon-based particles, and chemically bonding the ionized carbon-based particles and the ionized PTFE particles, which are ionized in different polarities, to each other.

Abstract: An electrode stack and a method of manufacturing the same are proposed. The electrode stack may include an A-type electrode including an A-type tab, and a B-type electrode stacked on the A-type electrode and including a B-type tab. The A-type tab and the B-type tab may not overlap each other, and the A-type electrode and the B-type electrode may have the same polarity.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. The separator has a larger size than the electrode to expose an edge part of the separator to outside of the electrode and the separator. The edge parts of the separators included in one radical unit or in the cell stack part are attached to form a sealing part.

Abstract: A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit having a same number of electrodes and separators alternately disposed and integrally combined is repeatedly disposed, or (b) a structure in which at least two kinds of radical units having a same number of electrodes and separators alternately disposed and integrally combined are disposed in a predetermined order, and a fixing part extending from a top surface along a side to a bottom surface thereof for fixing the cell stack part. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. The separator has a larger size than the electrode to expose an edge part of the separator to outside of the electrode and the separator. The edge parts of the separators included in one radical unit or in the cell stack part are attached to form a sealing part.

Abstract: A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order, the one kind or the at least two kinds of radical units having same number of electrodes and separators alternately disposed. The one kind of radical unit has four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or repeating structure of the four-layered structure. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. An outer separator that is a separator among separators of a radical unit positioned at the outermost part of the cell stack part is extended from a side of the cell stack part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit having a same number of electrodes and separators alternately disposed and integrally combined is repeatedly disposed, or (b) a structure in which at least two kinds of radical units having a same number of electrodes and separators alternately disposed and integrally combined are disposed in a predetermined order, and a fixing part extending from a top surface along a side to a bottom surface thereof for fixing the cell stack part. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

Abstract: A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part.

Abstract: Provided is a pouch type secondary battery including an electrode assembly accommodated in an accommodating part of a pouch exterior part. A vertex part of an inner surface of the accommodating part is rounded. The electrode assembly includes a unit stack part that has a structure (a) in which a type of radical units are repeatedly disposed, wherein electrodes and separators are alternately disposed and are integrally coupled in the radical units, and the number of the electrodes is the same as the number of the separators, or a structure (b) in which two or more types of radical units are disposed in a predetermined order, wherein electrodes and separators are alternately disposed and are integrally coupled in the radical units, and the number of the electrodes is the same as the number of the separators. Distal ends of neighboring ones of the separators are not adhered to each other.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit having a same number of electrodes and separators alternately disposed and integrally combined is repeatedly disposed, or (b) a structure in which at least two kinds of radical units having a same number of electrodes and separators alternately disposed and integrally combined are disposed in a predetermined order, and a fixing part extending from a top surface along a side to a bottom surface thereof for fixing the cell stack part. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

Abstract: A method of manufacturing an electrode assembly includes a first step of forming one kind of a radical unit or at least two kinds of radical units having an alternately stacked structure of a same number of electrodes and separators; and a second step of forming a cell stack part by repeatedly stacking one kind of the radical units, or by stacking at least two kinds of the radical units. Edge of the separator is not joined with that of adjacent separator. One kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked together or a repeating structure in which the four-layered structure is repeatedly stacked, and at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

Abstract: A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part.

Abstract: A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order, the one kind or the at least two kinds of radical units having same number of electrodes and separators alternately disposed. The one kind of radical unit has four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or repeating structure of the four-layered structure. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. An outer separator that is a separator among separators of a radical unit positioned at the outermost part of the cell stack part is extended from a side of the cell stack part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. The separator has a larger size than the electrode to expose an edge part of the separator to outside of the electrode and the separator. The edge parts of the separators included in one radical unit or in the cell stack part are attached to form a sealing part.

Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order, the one kind or the at least two kinds of radical units having same number of electrodes and separators alternately disposed. The one kind of radical unit has four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or repeating structure of the four-layered structure. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. An outer separator that is a separator among separators of a radical unit positioned at the outermost part of the cell stack part is extended from a side of the cell stack part.

Abstract: Provided is a method of manufacturing an electrode assembly by using a magazine. The method includes manufacturing radical units in which electrodes and separators are alternately stacked (operation S10), loading and aligning the radical units in an aligning magazine for accommodating the radical units (operation S20), inspecting a dimension of the radical units aligned in operation S20 (operation S30), and transferring radical units considered to have a normal dimension in operation S30, to a stacking magazine to align and stack the radical units, thereby forming an electrode assembly (operation S40).

Abstract: The present invention relates to a lithium secondary battery, and more specifically to a lithium secondary battery having a multi-directional lead-tab structure. The lithium secondary battery of the present invention includes: an electrode assembly which is formed by alternately laminating an electrode plate having a current collector, an active material, and a tab, and an isolation layer; a lead which is electrically connected to the tab; and a battery case, wherein the lead is divided into an anode lead and a cathode lead, and at least two or more anode leads and cathode leads are provided. The battery of the present invention uses the same lead-tab size as the prior art and is suitable for use with high current.