Title of Invention: Electrode with Binder Layer and Method for Manufacturing Same technical field [One] This application is filed on 2020.06.25. Claims the benefit of priority based on Korean Patent Application No. 10-2020-0077557, and all contents disclosed in the documents of the Korean patent application are incorporated as a part of this specification. [2] The present invention relates to an electrode having a binder layer formed thereon and a method for manufacturing the same, and more particularly, to an electrode having a binder layer formed under both ends of an electrode active material layer and a method for manufacturing the same. [3] background [4] Recently, a rechargeable battery capable of charging and discharging has been widely used as an energy source for a wireless mobile device. In addition, secondary batteries are attracting attention as energy sources for electric vehicles, hybrid electric vehicles, etc., which have been proposed as a way to solve air pollution, such as conventional gasoline vehicles and diesel vehicles using fossil fuels. Therefore, the types of applications using secondary batteries are diversifying due to the advantages of secondary batteries, and it is expected that secondary batteries will be applied to more fields and products in the future than now. [5] These secondary batteries are sometimes classified into lithium ion batteries, lithium ion polymer batteries, lithium polymer batteries, etc. depending on the composition of the electrode and electrolyte. is increasing In general, secondary batteries, depending on the shape of the battery case, a cylindrical battery and a prismatic battery in which the electrode assembly is built in a cylindrical or prismatic metal can, and a pouch-type battery in which the electrode assembly is built in a pouch-type case of an aluminum laminate sheet The electrode assembly built into the battery case consists of a positive electrode, a negative electrode, and a separator structure interposed between the positive electrode and the negative electrode, and is a power generating element capable of charging and discharging. It is classified into a jelly-roll type wound with a separator interposed therebetween, and a stack type in which a plurality of positive and negative electrodes of a predetermined size are sequentially stacked with a separator interposed therebetween. [6] Among them, the large area of ​​the case and the processing into thin materials are attracting a lot of attention due to the high capacity of the battery. The use of pouch-type batteries is gradually increasing due to reasons such as low manufacturing cost, small weight, and easy shape deformation. [7] 1 is a schematic diagram showing a conventional electrode manufacturing process. [8] Referring to FIG. 1 , in a conventional electrode manufacturing method, an electrode slurry containing an electrode active material is applied on a current collector 1 to form an electrode active material layer 2 , dried and rolled, and notched to manufacture an electrode became However, when the electrode is manufactured in this way, there is a problem in that the active material is detached from the notched portion when the current collector to which the electrode slurry is applied is notched. In particular, in recent years, as the loading amount of the electrode active material increases in order to improve the energy density, the binder content tends to decrease relatively, and accordingly, the degree of detachment of the electrode active material during notching may increase. In addition, the movement of the binder to the surface of the electrode during drying promotes desorption of the electrode active material. However, when the binder content in the electrode slurry is increased to prevent this phenomenon, there is a problem in that the energy density is reduced. [9] Therefore, there is a need to develop technology to solve these problems. [10] DETAILED DESCRIPTION OF THE INVENTION technical challenge [11] An object of the present invention is to provide an electrode capable of preventing an electrode active material from being detached from a current collector without increasing a binder content in a manufacturing process of the electrode and a process of using the electrode, and a manufacturing method thereof. [12] means of solving the problem [13] In one embodiment of the present invention, the electrode according to the present invention has a structure in which an electrode active material layer is formed on a current collector having an electrode tab formed at one end thereof, and a binder layer is formed between the current collector and the electrode active material layer, The binder layer is formed on both ends of the electrode active material layer. [14] In one embodiment of the present invention, the binder layer includes 60 to 90% by weight of the binder and 10 to 40% by weight of the conductive material based on the weight of the binder layer. [15] In one embodiment of the present invention, the thickness of the binder layer is 1 to 30% of the thickness of the electrode active material layer. [16] At this time, the sum of the thicknesses of the electrode active material layer and the binder layer at both ends of the current collector is the same as the thickness of the electrode active material layer in the portion where the binder layer is not formed. [17] In one embodiment of the present invention, the width direction length of the binder layer formed at one end of the current collector is 5 to 20% of the width direction length of the electrode active material layer. [18] In addition, the present invention provides a secondary battery including the electrode as described above. [19] In addition, the present invention provides a method for manufacturing an electrode as described above, the method for manufacturing an electrode according to the present invention includes forming a binder layer by applying a binder composition including a binder on a current collector in two rows; Forming an electrode active material layer by coating an electrode slurry containing an electrode active material on the current collector on which the binder layer is formed so that the binder layer is completely covered, and the binder layer is positioned at both ends of the active material layer based on the coating width direction ; drying the current collector on which the binder layer and the electrode active material layer are formed; and notching the dried current collector to form an electrode having an electrode tab formed at one end thereof. [20] In the forming of the binder layer, the width direction length of one of the binder layers formed in the two rows is smaller than the width direction length of the other one. [21] In the step of forming the binder layer, each uncoated region is formed on the outside of the binder layer formed in the two rows with respect to the width direction of the current collector. [22] In the forming of the electrode, the electrode tab is formed on any one of the uncoated regions. [23] In this case, the electrode tabs may be formed adjacent to a binder layer having a small width in the width direction among the binder layers formed in two rows. [24] Meanwhile, in the step of forming the electrode, the current collector is notched so that the width direction length of the binder layer formed in the two rows is the same as the width direction length of the other binder layer. [25] In one embodiment of the present invention, the step of forming the binder layer and the step of forming the active material layer are simultaneously performed by one slot die. [26] In another embodiment of the present invention, the forming of the binder layer and the forming of the active material layer are successively performed by two slot dies. [27] In addition, the present invention includes a secondary battery manufacturing method including the electrode manufacturing method as described above. [28] Effects of the Invention [29] In the electrode according to the present invention, by providing a binder layer formed between the current collector and the electrode active material layer at both ends of the current collector, detachment of the electrode active material can be prevented, thereby preventing a low voltage problem that may occur. [30] In addition, in the method for manufacturing an electrode according to the present invention, before applying the electrode slurry containing the electrode active material, the active material is collected during the notching process of the current collector by applying the binder composition in advance to positions corresponding to both ends of the electrode slurry to be applied. It can prevent detachment|desorption from the whole. [31] Brief description of the drawing [32] 1 is a schematic diagram showing a conventional electrode manufacturing process. [33] 2 is a schematic diagram showing the structure of an electrode according to an embodiment of the present invention. [34] 3 is a flowchart showing the sequence of the electrode manufacturing method according to the present invention. [35] 4 is a schematic view showing a shape in which a binder composition is applied on a current collector in an electrode manufacturing method according to the present invention. [36] 5 is a schematic diagram illustrating a shape in which an electrode slurry including an electrode active material is applied on a current collector to which a binder composition is applied in the electrode manufacturing method according to the present invention. [37] 6 is a schematic view showing a process of notching the current collector to which the binder composition and the electrode slurry are applied in the electrode manufacturing method according to the present invention. [38] 7 is a schematic diagram illustrating a process of applying a binder composition and an electrode slurry in an electrode manufacturing method according to an embodiment of the present invention. [39] 8 is a schematic diagram illustrating a structure of a slot die used in an electrode manufacturing method according to an embodiment of the present invention. [40] 9 is a schematic view showing the shape of the shim member inserted into the slot die used in the electrode manufacturing method according to the present invention. [41] 10 is a schematic diagram illustrating a process of applying a binder composition and an electrode slurry in a manufacturing method according to another embodiment of the present invention. [42] 11 is a schematic diagram showing the structure of a slot die used in an electrode manufacturing method according to another embodiment of the present invention. [43] Best mode for carrying out the invention [44] Hereinafter, the present invention will be described in detail. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of ​​the present invention based on the principle that it can be defined as [45] In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. Also, when a part of a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where it is "on" another part, but also the case where there is another part in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be “under” another part, it includes not only cases where it is “directly under” another part, but also cases where another part is in between. In addition, in the present application, “on” may include the case of being disposed not only on the upper part but also on the lower part. [46] [47] Hereinafter, the present invention will be described in detail. [48] 2 is a schematic diagram showing the structure of an electrode according to an embodiment of the present invention. [49] Referring to FIG. 2 , the electrode 100 according to the present invention has a structure in which an electrode active material layer 120 is formed on a current collector 110 having an electrode tab 111 formed at one end thereof, and the current collector 110 and A binder layer 130 is formed between the electrode active material layers 120 , and the binder layer 130 is formed at both ends of the electrode active material layer 120 . [50] In the specification of the present invention, the electrode active material layer refers to a layer formed by coating an electrode slurry on a current collector, and the binder layer refers to a layer formed by applying a binder composition including a binder on the current collector. [51] In this case, the binder layer 130 and the electrode active material layer 120 may be formed on one or both surfaces of the current collector 110 . Referring to FIG. 2 , (a) of FIG. 2 shows an electrode in which a binder layer 130 and an electrode active material layer 120 are formed on one surface of a current collector 110, and (b) of FIG. 2 is a current collector. An electrode in which a binder layer 130 and an electrode active material layer 120 are formed on both surfaces of 110 is shown. [52] As described above, in the electrode manufacturing method, an electrode slurry containing an electrode active material is applied on a current collector, dried and rolled, and then notched to prepare an electrode, so there is a problem in that the electrode active material is detached during notching. In addition, there is a problem that the active material may be detached as the end of the electrode is easily worn in the process of using the electrode. [53] Accordingly, by forming the binder layer 130 between the electrode active material layer 120 and the current collector 110, the binding force of the active material layer to the current collector is strengthened during the electrode manufacturing process and the use process, and the active material is removed from the current collector. It can prevent detachment. Accordingly, it is possible to prevent deterioration of battery performance such as cycle characteristics in the process of manufacturing and using the battery. [54] In addition, in the present invention, the binder layer is formed only on a portion of the current collector rather than the entire surface of the current collector. In this case, the binder layer acts as an electrical resistance to prevent a decrease in conductivity between the electrode active material layer and the current collector. In the electrode according to the present invention, by forming a binder layer only at both ends of the electrode active material layer, the conductivity between the electrode active material layer and the current collector is maximized, thereby improving battery performance. [55] [56] Hereinafter, the electrode according to the present invention will be described in detail. [57] In the electrode according to the present invention, a conductive member made of a metal having good conductivity may be used as the current collector. It is not particularly limited as long as it has high conductivity without causing a chemical change in the battery. When the electrode is a positive electrode, the positive electrode current collector may be stainless steel, aluminum, nickel, titanium, calcined carbon, or one in which the surface of aluminum or stainless steel is surface-treated with carbon, nickel, titanium, silver, etc. may be used. there is. The current collector may increase the adhesive force of the positive electrode active material by forming fine irregularities on its surface, and various forms such as a film, sheet, foil, net, porous body, foam body, and non-woven body are possible. The positive electrode current collector may be generally made to have a thickness of 3 to 500 μm. [58] In the case of the negative electrode current collector, copper, stainless steel, aluminum, nickel, titanium, calcined carbon, a copper or stainless steel surface treated with carbon, nickel, titanium, silver, etc., an aluminum-cadmium alloy, etc. may be used. The negative electrode current collector may also be generally made to have a thickness of 3 to 500 μm. [59] Meanwhile, the electrode active material layer may include an electrode active material, a conductive material, and a binder. The electrode active material may be a positive electrode active material and a negative electrode active material, and the positive active material may be a lithium-containing oxide, and may be the same or different. As the lithium-containing oxide, a lithium-containing transition metal oxide may be used. [60] For example, the lithium-containing transition metal oxide is LixCoO 2 (0.5