Art [1] Mutual citations and related applications [2] This application claims the benefit of priority based on the March 24 issue of Korea Patent Application No. 2016-0035562, and March 23, 2017 Date of Korea Patent Application No. 2017-0036956 years 2016, all described in the literature of the Korea Patent Application content of which is incorporated as a part hereof. [3] Art [4] The present invention relates to a conductive material, a minute secondary battery positive electrode and a secondary battery produced using this composition, and for the positive electrode of the secondary battery can be formed in increased battery improves performance acid. BACKGROUND [5] Fine carbon material such as carbon black, ketjen black, fullerene, graphene or carbon nanotubes are widely used in areas such as due to excellent electrical characteristics and heat conductivity, energy, aerospace applications. However, these in order to apply the fine carbon material is uniformly dispersed, but must be preceded, by a method such as dispersion with a dispersion, surface functionalization using a conventional mechanical dispersion, a dispersing agent was not easy to manufacture a high concentration of the fine carbon material dispersion. [6] And the rapidly increasing demand for secondary batteries as an energy source as the recent increase in the development of technology and demand for mobile devices. Among such secondary batteries have high energy density and voltage, long cycle life, self-discharge rate are commercially available and widely used low-lithium secondary battery. [7] In the lithium secondary battery, the electrode of the positive electrode and the negative electrode is prepared by drying after coating the composition for forming an electrode prepared by mixing an electrode active material and a binder in a solvent and bulk to the current collector. At this time, the active material and the house for conducting secure between full and to include a conductive material of the fine carbon material in forming the electrode composition, particularly it is possible to increase the active material charging ratio, a small amount is also to suppress an increase in the battery internal resistance the carbon black can be used widely in that. [8] However, when a conductive material because it is used as a level of several tens of nm particles, the cohesive force tends to occur a strong cohesion between the fine particles when the conductive material dispersed in a solvent. Such electrode active materials intra-layer conductive material in non-uniform dispersion can degrade the conductivity between the active material because of the resulting degradation of the output characteristics conductivity decreases and the battery, and also so simple agglomerated conductive material in the agglomerates is low, the structure retaining ability. In addition, by adsorption of the binder material is non-conductive surface area spreads may result in non-uniform distribution of the active material and therefore the adhesive force reduction according to intra-layer binder. [9] This was pre-dispersed with a conductive material and a binder, and a solvent for making the paste, with stirring added to the electrode active material herein, methods for mixing, and in order to solve the problems associated with the conductive material in the dispersion. However, in the dispersion comprising a resin binder such as a fluorine resin, a cellulose resin, a poor dispersion stability of the conductive material particles, conducting agent particles' re re-aggregation, etc., it was not possible to obtain a sufficient effect. [10] Further, by adding a vinyl pyrrolidone type polymer as a dispersant for the conductive material and a solvent, to increase the conductive material in the dispersion, there was an attempt to do this satisfactorily maintain cell load characteristics and cycle characteristics over. However, the case of adding the vinyl pyrrolidone type polymer is to discard or insulating coating an electrode active material, there is a problem to be modified when the long-term storage in a charged state impair the battery characteristics such as ll to deteriorate the discharge characteristics. [11] In this, as well as such a lithium secondary battery in order to use-up of the fine carbon particles in a variety of fields, it is necessary to develop a method that the fine carbon particles can be uniformly dispersed. Detailed Description of the Invention SUMMARY [12] The first object of the present invention to provide a conductive material min positive electrode composition and a manufacturing method for the formation of a secondary battery that can increase cell improves performance acid. [13] The second object of the present invention is to be produced using the above-mentioned positive electrode forming composition, providing a conductive material uniformly distributed secondary battery positive electrode and a secondary battery. Problem solving means [14] According to one embodiment of the present invention to achieve the above object, a cathode active material, conductive material, and including a dispersant, wherein the conductive material having a specific surface area of 130 m 2 are at / g, an oil absorption of 220 ml / 100g or more carbon comprises a substance of 0.1% to 2% by weight based on the total weight of the composition for the positive electrode is formed, the dispersing agent is introduced into the conductive material, conductive material, - to form a dispersing agent conjugate, wherein the conductive material-dispersant complex is the particle size distribution D 50 is provided to the 0.8㎛ 1.2㎛ would composition for the positive electrode of the secondary battery formed. [15] In addition, according to another embodiment of the present invention, by milling a mixture of a conductive material and a dispersing agent in a solvent to prepare a dispersion of a conductive material; And a step of adding an anode hwalmul to the conductive material dispersion liquid were mixed, the specific surface area material of the conductive 130 m 2 / g and more, an oil absorption of 220 ml / 100g or more composition total weight for the carbon-based material, a positive electrode formed It comprise from 0.1% to 2% by weight, and wherein the conductive material is a conductive material, a dispersion wherein the dispersing agent is introduced into the conductive material with respect to the - comprises a dispersing agent conjugate, wherein the conductive material-dispersant complex is the particle size distribution D 50 is 0.8㎛ to provide a method for manufacturing a positive electrode formed of a secondary battery would 1.2㎛ composition. [16] According to another embodiment of the present invention, there is provided a rechargeable lithium battery including the positive electrode A secondary battery produced by using this, and for the positive electrode forming composition of the secondary battery. [17] More specific details of the embodiments of the invention are included in the following description. Effects of the Invention [18] The composition for forming a positive electrode of a secondary battery according to the present invention may be uniformly dispersed within the composition by the conductive material of the refractory acid, a significant increase in performance, such as resistance characteristics of the battery, service life characteristics, capacity properties and rate properties. Best Mode for Carrying Out the Invention [19] Hereinafter, the present invention will be described in more detail to aid the understanding of the present invention. [20] Herein and in the terms or words used in the claims is general and not be construed as limited to the dictionary meanings are not, the inventor can adequately define terms to describe his own invention in the best way on the basis of the principle that the interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. [21] [22] There is a highly conductive material is applied to the conductive surface area is large and the structure of the secondary particles, the development is required according to the high-capacity and high-output characteristics for the secondary batteries is required. Than the highly conductive conductive commercially available conductive material existing material because of a strong cohesion between the particles, it has a mixed refractory acid method in the conventional slurry mixing process has been difficult the uniform dispersion. For example, in the case of carbon black composed of the primary particles it is agglomerated particles as a unit, thereby improving the conductivity developed by the combined structure of the primary particles. However, in the case of carbon black that improves conductivity in this manner, is easy to form the aggregates is smaller, the size of the primary particles have a surface area large, and the oil absorption is not easy to increase dispersion. If the dispersion in the conductive electrode material is low mothayeo not conductive material suitably distributed in the active material surface, the performance of the battery cells is lowered, thereby increasing the inter-cell performance variation. Further, if the variance exceeds the conductive material is not easy to be distributed, but the conductive ingenuity network forming the glass in the conductive material in the active material surface is rather distributed within the cell resistance is increased. [23] The conductive material is mixed with a dispersing agent when used, the dispersing agent is introduced through a physical or chemical bond to the surface of the conductive member the conductive material - in the form of dispersing agents include dispersed composite. At this time, the conductive material is formed - a particle size distribution of the dispersant complex represents the dispersion material within the conductive composition. [24] [25] Accordingly, in the present invention, the combination control with the conductive material and the dispersing agent in water sexual characteristics to indicate the optimal degree of dispersion within the electrode and further by optimizing the conductive material and milling conditions during the dispersion of the dispersing agent, the composition endogenous that conductive material - it can be controlled by the particle size distribution of the composition uniform composite dispersant dispersing the conductive material of the refractory and acid, a significant increase in performance, such as resistance characteristics of the battery, service life characteristics, capacity properties and rate properties as a result. [26] [27] Specifically, the positive electrode forming composition for a secondary battery according to an embodiment of the present invention comprises a positive electrode active material, conductive material and a dispersant, and wherein the conductive material having a specific surface area of 130 m 2 are at / g, an oil absorption of 220 ml / 100g or more and comprises a carbon-based material as 0.1 wt% to 2% by weight based on the total weight of the composition for the positive electrode is formed, the dispersing agent is introduced into the conductive material, conductive material, - to form a dispersing agent conjugate, wherein the conductive material-dispersant complex is the particle size distribution of D 50 is the 0.8㎛ to 1.2㎛. In the present invention, the content of the carbon-based material is particularly a one, based on the total weight of solids in the positive electrode forming composition value unless noted. [28] [29] D of the particle size distribution of the dispersant complex -, in the composition for a positive electrode formed of a secondary battery according to one embodiment of the invention, the conductive material as described above, 50 when to meet the above-mentioned range, the conductive material minutes significantly improved acid and, it is possible to improve the cell performance as a result the electrode forming the electrode decreases in resistance. If the conductive material - D of the particle size distribution of the dispersant complex 50 but is not susceptible to the conductive material forming a network among the active material within the electrode when the positive electrode formed by the conductive material and dispersion when 0.8㎛ below, there is a fear that result in an increase in cell resistance . In addition, the conductive material - D of the particle size distribution of the composite dispersant 50 If the excess of the dispersion can not 1.2㎛ conductive material is insufficient, the conductive material is increased, the cell performance degradation and performance variation between cells inability to properly distributed in the active material surface. Conductive material in the best dispersion and given that the remarkable effect of improvement according thereto, conductive material included in the positive electrode forming composition for-dispersant complex is the particle size distribution D of 50 and a 0.8㎛ to 1.2㎛, D 90 to the 2.0㎛ 5.0㎛ may be less. [30] [31] Wherein a conductive material - the particle size distribution condition of the dispersing agent conjugate is affected by the physical properties and content of the conductive material and the dispersing agent, subjected to particularly great influence on the physical properties and content of the conductive material in the dual. Also, if the amount of conductive material contained in the positive electrode forming composition for a lot include, but may be minimal difference of the dispersion particle size because they do not easily dispersed, the amount of material challenges the optimum dispersion particle size of the conductive material in the physical properties of not more than a certain level It may be present. [32] [33] Specifically, in the composition for a positive electrode formed of a secondary battery according to one embodiment of the invention, the conductive material surface area (SSA) is 130 m 2 / g and more, an oil absorption (OAN) is 220 ml / 100g or more carbon for a substance to the total weight of the composition for forming the positive electrode includes from 0.1% to 2% by weight. [34] [35] In the present invention, a carbon-based substance "specific surface area (specific surface are: SSA)" can be defined as the value measured by the nitrogen adsorption method, "oil can be absorbed (Oil Absorption number, OAN)" is a liquid (oil ) as a measure for the absorption properties, the specific surface area and oil absorption number can be used as the value representing the structural characteristics or the structure developed around the carbon-based material. In the carbon-based material having a second structure of the secondary particles formed by assembly of the normal primary particles, it means the size of the primary particles is small, the second having a larger specific surface area and oil absorption of the developed structure of the particles. On the other hand in this case exhibits excellent conductivity, dispersibility may be lowered. Accordingly, given the electrode in conductivity and the dispersibility, in developed structure carbon-based material is to be optimized. [36] [37] Specifically, in the positive electrode forming composition for a secondary battery according to one embodiment of the invention, comprising a secondary particle of the carbon-based material made by the assembly of the conductive material of primary particles, wherein the carbon-based material has a specific surface area the 130 m 2 are at / g, oil absorption may be less than 220 ml / 100g. In this way it can exhibit a more excellent dispersibility with a conductivity by having a more advanced structure. [38] [39] More specifically, the carbon-based material is the average particle diameter (D of the primary particle 50 a specific surface area of the secondary particles formed of an a) 15nm to 35nm, the primary particles are assembled is 130 m 2 / g to 270 m 2 / g, an oil absorption of 220 ml / 100g to by having a highly developed structure of 400 ml / 100g, can represent the dispersion with more excellent conductivity, in particular, three-phase with my apply when the positive electrode active material and the electrolytic anode increase the supply of the electron at the interface it is possible to improve the reactivity. If either of the primary particles of the carbonaceous substance having an average particle size of less than 15nm, the specific surface area and oil absorption of the secondary particles 270 m, each 2 exceeds a / g and 400 ml / 100g, a fear that aggregation of the carbon-based material take place a, in which case there is a minute may be reduced acid. Also the average particle size exceeds 35nm, or the secondary particle surface area and oil absorption of each 130 m of 2 / g under and is 220 ml / less than 100g dispersion because of the primary particles is too large, there is little conductive material structure development size can be easily mothamyeo but wrap sufficiently surface active material reduces the volume of the conductive material per the same weight, there is a fear that the resulting increase in cell performance degradation and performance variation between cells. More specifically, the mean particle size of the carbon-based primary average particle size and secondary particles of the particles of the material specific surface area and oil absorption, considering that the significantly the Effects of conductivity and dispersed, primary particles of the carbon-based material ( D 50 ), and a 20nm to 35nm, the specific surface area of secondary particles m 130 2 / g to 270 m 2 a / g, oil absorption may be one of 220 ml / 100g to 400 ml / 100g. [40] [41] On the other hand, the average particle diameter (D of the primary particles in the carbon-based material according to the invention 50 ) may be defined as particle diameter at 50% of the particle size distribution criteria. Also the average particle diameter (D in the carbon-based material 50 ) is, for example, a laser diffraction method and can be measured using the (laser diffraction method), more specifically, after dispersing the carbon-based material in a solvent, a commercially available laser diffraction particle size to be introduced into the measurement device (e.g. Microtrac MT 3000) to investigate the ultrasonic waves of about 28kHz to output 60W, average particle size (D in 50% based on the particle size distribution of the measuring device 50 to calculate a) can. [42] [43] The carbon-based material is particularly graphite such as natural graphite or artificial graphite; Acetylene black, Ketjen black, channel black, furnace black, carbon black, such as lamp black, or thermal black; Or it may be a carbonaceous material such as carbon fibers. More specifically, in the double it is the carbon-based material may be carbon black. [44] Further, the carbon black can be variously classified according to a manufacturing method and raw materials used. Available carbon black in the present invention is acetylene black, Ketjen black, channel black, furnace black, lamp black, thermal black, or may be Denka Black or the like, may be used any one or a mixture of two or more in double. [45] [46] More specifically, considering the excellent conductivity and dispersibility in the preparation of for the positive electrode forming composition wherein the carbon black is produced using acetylene gas, specifically, it is made by thermal decomposition of acetylene gas in the oxygen-free atmosphere, of the primary particles the average particle diameter (D 50 i) may be of 20nm to 30nm. [47] [48] Further, the carbon black can be less than the control or the impurity content of the metal produced in carbon black through a purification step after the impurities during the manufacturing process control, specifically, a purity of 99.5%. [49] The lithium secondary battery as an example as the components are degraded by a variety of reasons there is a life characteristic deterioration, one of the main causes is due to the cells within the incorporation of metal impurities contained in the conductive material. Specifically, metal impurities such as iron (Fe) contained in the conductive material is dissolved in the electrolyte react at about 3.0V to 4.5V operating voltage range of the lithium secondary battery, the dissolved metal impurities in the form of a metal at the cathode material is precipitated. The thus deposited metal is through the separator and the anode short-circuit causes a low voltage failure, and results in a lowering of the capacity characteristics and cycle life characteristics of secondary batteries will be able to fulfill its role as a cell. Thus, upon application of the conductive material in the secondary battery, it is important to prevent the inclusion of impurities, especially metal impurities occurs. Accordingly, carbon black can be used in the present invention can be a carbon black having a high purity of the above range, the content of metal impurities as possible removed. [50] [51] In the present invention, the amount of the carbon black, impurities, especially metal impurities, or by using a magnetic, X- ray diffraction (X-ray Diffraction, XRD), differential thermal analysis (Differential Thermal Analysis, DTA), differential scanning calorimetry (differential scanning calorimetry, DSC), modulated differential scanning calorimetry (modulated differential scanning calorimetry, MDSC), thermogravimetric analysis (thermogravimetric analysis, TGA), thermogravimetric-infrared (thermogravimetric-infrared, TG-IR) analysis, and melting point It may be analyzed or identified by methods including one or more of thermal analysis, including measurement. Specifically, the content of carbon black in the metal impurities can be measured through the main peak intensity of the impurity metal obtained by the X- ray diffraction method (XRD). [52] [53] Also, in the conductive material, the dispersion according to one embodiment of the invention, the carbon black may be surface-treated in order to improve the dispersibility in the dispersion. [54] Specifically, the carbon black is by introducing an oxygen-containing function by the oxidation treatment of carbon black surface, or imparting a hydrophilic property; Or it may be imparted to a hydrophobic fluorinated or siliconized for the carbon black. In addition it may be carried out applying the phenol resin or the mechanochemical treatment for the carbon black. For example, if an oxidation treatment of carbon black, can be carried out by heat treatment at about 500 ℃ to 700 ℃ approximately for 1 hour to 2 hours, the carbon black under air or oxygen atmosphere. However, the surface treatment of carbon black excessive, because the electrical conductivity and strength of the carbon black itself can be significantly degraded, it may be desirable to properly control. [55] [56] More specifically, the carbon black may be one of the measured iodine in accordance with ASTM D-1510 (iodine number) is 200 mg / g to 400 mg / g, if, of the carbon black iodine number 200 mg / when g is less than can be difficult to sufficiently disperse the carbon black, if it exceeds 400 mg / g, there may occur a problem that conductivity is deteriorated. [57] The term "iodine (Iodine Number)" used in the present invention are absorbed in the sample 100g in terms of the amount of the halogen with iodine that is absorbed case in which the action of a halogen in the holding or fatty acid by using a reaction in which the halogen is added to the double bond, that displays the amount of iodine as g, as a value indicating the number of double bonds of unsaturated fatty acids in the sample, and represents the number of Fair coupling the higher the iodine value of the double. [58] [59] Carbon-based material as described above may be contained at 0.1 weight% to 2% by weight based on the total weight of solids in the composition for forming a positive electrode. When the content of the carbon-based material is less than 0.1% by weight exceeds the conductivity improvement effect is insignificant, and again 2% by weight according to the use of carbon-based materials, the dispersion is lowered, there is a fear of lowering the cell capacity. Considering the above-mentioned carbon-based also significantly improve the effect of the use of the material the carbon-based material may be included at 0.5% to 1.5% by weight relative to the total weight of solids in the composition for forming a positive electrode. [60] [61] In the present exemplary positive electrode forming composition according to the embodiment of the invention, with the above-mentioned carbon-based material to enhance the conductivity of the conductive material may further comprise a normal conductive material. [62] Specifically, the conductive material is a carbon-based material and mixed using a conductive network is formed more easily, and it also can further comprise a fibrous conductive material which is easy to form three-phase interface of the application when the battery active material. It said fibrous conductive material is a fibrous conductive carbon nanorods, or such as a carbon nano-fiber aspect ratio (the diameter perpendicular to the long axis length and the major axis passing through the center of the conductive fiber material ratio) is greater than 1 may be in Japan. [63] [64] Further, the fibrous conductive material has a length effect on electrical conductivity, strength, and dispersion of the dispersion. Specifically, the longer the length of the fibrous conductive material, but the electrical conductivity and strength can be increased, the length is too long, there is a possibility that the dispersibility decreases. In accordance with an aspect ratio than the fibrous conductive material it is from 5 to 50,000, can be used in the present invention may be specifically 10 to 15,000. [65] [66] With respect to the fibrous conductive material 100 parts by weight of the carbon-based material as described above may be used amount of 0.1 parts by weight to 10 parts by weight. When compared to the content of the carbon-based substance is too low, the conductive fiber material content, when the conductivity improving effect of using mixed insignificant, and further is more than 10 parts by weight, there is a fear of the fibrous conductive material dispersibility decreases. [67] [68] In addition, it is to be dispersed in a conventional conductive material in the manufacture of a composition for forming an electrode using a dispersant in the form of a dispersion medium and a dispersing agent physical or chemical bond with the complex. [69] In the present invention, in the manufacture of a positive electrode is formed using the above conductive material composition, the conductive material and the interaction is the repeating unit region of the possible structure and a control content of the repeating unit area of ​​the structure capable of interacting with the dispersion medium in accordance with by using part of the hydrogenated nitrile rubber as a dispersant, a dispersion medium of the conductive material can exhibit a low viscosity even when the distribution is uniform, and further the high concentration of conductive material dispersion. [70] [71] Specifically, in one embodiment the positive electrode forming composition according to the embodiment of the present invention, the dispersant is of the α, β- unsaturated nitriles resulting structure as a repeating unit area of ​​interactive structure and a carbonaceous substance (A) and the repeating unit; May be a portion including the interactive structure of the repeating unit regions (B) a conjugated diene repeating units derived from the repeating unit structure and a hydrogenated conjugated diene-derived structure of the dispersion medium containing the hydrogenated nitrile rubber. In this case, the partially hydrogenated nitrile rubber is the conductive material - may optionally further include the addition of a comonomer copolymerizable possible under conditions in which the dispersing agent composite to have the particle size distribution. [72] [73] The partially hydrogenated nitrile rubber, specifically can be prepared by α, β- unsaturated nitriles, the hydrogenation of a conjugated diene and, optionally, other copolymerizable ball after copolymerizing the monomer, the copolymer within the C = C double bond to. At this time, the polymerization process and the hydrogenation process may be carried out in a usual manner. [74] α, β- unsaturated nitriles with possible use in the manufacture of the partially hydrogenated nitrile rubber and the like particularly acrylonitrile or methacrylonitrile, there are singly or two or more species of the mixture may be used of these. [75] In addition, the possible use in the manufacture of the conjugated diene portion of hydrogenated nitrile rubber may be mentioned specifically 1,3-butadiene, isoprene, 2,3-butadiene-methyl, such as the number of carbon atoms of 4 to 6 conjugated diene, any of these or it may be used a mixture of two or more. [76] In addition, the selectively available other copolymerizable comonomers include specifically an aromatic vinyl monomer (e.g., styrene, α- methyl styrene, vinyl pyridine, and a fluoroalkyl vinyl ether, etc.), α, β- unsaturated carboxylic acid (e. g., acrylic acid, methacrylic acid, maleic acid, fumaric acid, etc.), α, β- unsaturated carboxylic acid ester or amide (e.g., methyl (meth) acrylate, ethyl (meth) acrylate, n- dodecyl (meth) acrylate, methoxymethyl (meth) acrylate, hydroxyethyl (meth) acrylate, or polyethylene glycol (meth) acrylate, etc.), α, β- unsaturated dicarboxylic anhydride of the acid It is mentioned (for example, maleic anhydride, itaconic anhydride, citraconic anhydride), but is not limited to this. [77] More specifically, the partially hydrogenated nitrile rubber, further comprising an α, β- unsaturated carboxylic ester of the acid, such as (meth) acrylate-based monomer as a comonomer. The (meth) Examples of the acrylate monomer include methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, n- butyl acrylate, isobutyl acrylate, n- amyl acrylate, isoamyl acrylate, n--ethylhexyl acrylate, 2-ethylhexyl sila methacrylate, 2-hydroxyethyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, 2-hydroxyethyl methacrylate, or hydroxy It includes propyl methacrylate. [78] [79] A method of partially hydrogenated nitrile butadiene rubber produced according to the described above, the α, β- unsaturated nitrile repeating units derived from the structure, a conjugated diene repeating unit derived from the structure, the repeating units and, optionally, of a hydrogenated conjugated diene-derived structure the content ratio of the repeating units of other copolymerizable comonomers derived structures can vary within a wide range, the total sum of the repeating units of the structure in each case is 100% by weight. [80] [81] Specifically, considering the compatibility with improved dispersibility and a dispersion medium for the carbon-based material, wherein the partially hydrogenated nitrile rubber, α, β- unsaturated nitrile content of the repeating unit of the structure is derived from 20 with respect to the total weight of the partially hydrogenated nitrile rubber % to 50 wt%, and may be more specifically, 20% to 30% by weight. When the repeating unit of α, β- unsaturated nitrile-derived structure with the above-described content range, it is possible to increase the conductive material in the dispersion, the conductive material even when the addition amount is less it is possible to give a high conductivity. [82] In the present invention, part of the content of the repeating unit in α, β- unsaturated nitrile-derived structure of the hydrogenated nitrile rubber has a weight ratio to the total rubber in the repeating unit of the structure derived from the α, β- unsaturated nitriles, art content of measurement, depending on the mill oven method of JIS K 6364, to measure the amount of nitrogen generated and converted to its binding amount from acrylonitrile molecular weight, a median value of the quantization value. [83] [84] In addition, the partially hydrogenated nitrile rubber is more specific than 20% by weight to 70% by weight with respect to the rubber total weight of the nitrile hydrogenation of repeating units of the hydrogenated conjugated diene-derived structural portion, more specifically from 20% to 50% by weight, a it may be one comprising 30% by weight to 50% by weight. Is the miscibility with the dispersion medium, by including the repeating units of the hydrogenated conjugated diene-derived structures in the content range as described above can be increased to increase the dispersibility of the carbon-based material. [85] [86] In addition, the partially hydrogenated nitrile If the rubber is further comprising the addition of other copolymerizable comonomers, the amount of repeating units of may be different from the content ratio depending on the type and nature of the comonomer, in particular the co-monomer-derived structure is partially hydrogenated a nitrile rubber than the total not more than 30% by weight relative to the weight, and specifically may be a 10% to 30% by weight. [87] [88] More specifically, to the part to the hydrogenated nitrile rubber repeating units of the structure of formula (1), comprising repeating units of the following structure and a repeating unit represented by the structure of formula 2, formula 3, and optionally α, β- unsaturated carboxylic acrylonitrile further comprises a repeating unit of the ester derived from the structure of the acid-can be a butadiene rubber (H-NBR). At this time, to the content of the repeating unit of the structure derived from an acrylonitrile of the formula (1) it may be 20% to 50% by weight relative to the total weight of rubber. In addition, to the content of the repeating units of hydrogenated butadiene-derived structure of the formula (3) it may be 20% to 50% by weight relative to the total weight of rubber. In addition , if a portion of the hydrogenated nitrile rubber further comprises a repeating unit of α, β- unsaturated carboxylic acid ester derived from the structure, the content of the repeating unit of the α, β- unsaturated carboxylic acid ester of the structure is derived rubber at most 30% by weight relative to the total weight of all, specifically, it may be a 10% to 30% by weight. [89] Formula 1 [90] [91] [Formula 2] [92] [93] [Formula 3] [94] [95] In addition, the partially hydrogenated nitrile rubber may be one of a weight average molecular weight of 10,000g / mol to about 700,000g / mol, more particularly to 10,000g / mol to about 200,000g / mol. In addition, the partially hydrogenated nitrile rubber is 2.0 to 6.0 range, specifically, can be one having a 2.0 to 4.0 range polydispersity index PDI of (a Mw / Mn ratio, Mw is the weight average molecular weight of Mn being a number-average molecular weight) have. When the partially hydrogenated nitrile rubber having a weight average molecular weight and polydispersity index of the above range, the conductive material - is a conductive material, by meeting the conditions of the average particle size of the dispersing agent conjugate it can be uniformly dispersed in the dispersion medium. [96] In the present invention, the weight average molecular weight and number-average molecular weight is expressed in terms of polystyrene molecular weight analysis by gel permeation chromatography (GPC). [97] [98] In addition, the partially hydrogenated nitrile rubber may be one having a (ML 1 + 4 at 100 ℃) 10 to 120, in particular from 10 to 100 Mooney viscosity of more. Mooney viscosity of the partially hydrogenated nitrile rubber in the present invention can be measured according to ASTM standard D 1646. [99] [100] On the other hand, as in the composition for the positive electrode formed in accordance with one embodiment of the present invention, the positive electrode active material is reversible intercalation and de-intercalation the compound of lithium (Priority this suited intercalation compound), specifically is a material having a hexagonal layered rock-salt structure (as a specific example, LiCoO 2 , LiCo 1/3 Mn 1/3 Ni 1/3 O 2 , or LiNiO 2 ), up material having a blank structure (as a specific example, LiFePO 4 ), spinel material with a cubic structure (as a specific example, LiMn 2 O 4 ), that in addition to V 2 O 5 may be a knife koken compounds, such as, such as vanadium oxide, TiS, or MoS. [101] [102] More specifically, the positive electrode active material may be a lithium composite metal oxide comprising lithium and a metal such as cobalt, manganese, nickel or aluminum. The lithium composite metal oxide is particularly, lithium-manganese-based oxide (for example, LiMnO 2 , LiMn 2 O and the like), lithium-cobalt oxide (e.g., LiCoO 2 and the like), lithium-nickel-based oxide (for example, for example, LiNiO 2 and the like), lithium-nickel-manganese-based oxide (for example, LiNi 1 - Y Mn Y O 2 (where, 0