A polymeric composite binder for electrodes, comprising a binder polymer and a dispersant chemically bound to the surface of the binder polymer, wherein the dispersant contains water-soluble functional groups, and wherein the dispersant is added after the conversion of monomer(s) to the binder polymer reached a level of at least 50% in a polymerization reaction for forming the binder polymer, wherein the binder polymer is prepared from at least one monomer selected from the group consisting of aromatic vinyl monomer, conjugated diene monomer, (meth)acrylic acid ester monomer, nitrile monomer, and unsaturated carboxylic acid monomer, and wherein the dispersant is at least one selected from the group consisting of: an alkoxypolyalkyleneoxide (meth)acrylic acid ester (first dispersant) represented by the following Formula 1; a (meth)acrylic acid-derived monomer (second dispersant) represented by the following Formula 2; a reactive surfactant (third dispersant) represented by the following Formula 3; a copolymer (forth dispersant) comprising 50-90 wt% of the monomer of the first dispersant, 5-45 wt% of the monomer of the second dispersant monomer, and 0.5-40 wt% of the monomer of the third dispersant; and a polycarboxylic acid monomer (fifth dispersant) represented by the following Formula 4: wherein R 1 is a hydrogen atom or methyl; R 2 O is alkylene oxide with 1 to 4 carbon atoms or a mixture of two or more of the alkylene oxides, and if it is the mixture, it can be added in a random or block form; R 3 is alkyl with 1 to 4 carbon atoms; and n is an integer of 1-50; wherein R 4 is a hydrogen atom or methyl; M 1 is a hydrogen atom, monovalent metal atom, divalent metal atom, ammonium or organic amine group; wherein R 5 is a hydrogen atom or methyl; R 6 is alkylene with 1 to 4 carbon atoms, phenylene or alkyl phenylene with 1 to 4 carbon atoms; R 7 O is alkylene oxide with 1 to 4 carbon atoms or a mixture of two or more of the alkylene oxides, and if it is the mixture, it can be added in a random or block form; and M 2 is a hydrogen atom, monovalent metal atom, divalent metal atom, ammonium or organic amine group; m is an integer of 10-50; and r is 0 or 1. wherein R 8 is a hydrogen atom or methyl; R 9 is alkylene oxide with 1 to 4 carbon atoms, and t is an integer of 1-10. an alkoxypolyalkyleneoxide (meth)acrylic acid ester (first dispersant) represented by the following Formula 1; a (meth)acrylic acid-derived monomer (second dispersant) represented by the following Formula 2; a reactive surfactant (third dispersant) represented by the following Formula 3; a copolymer (forth dispersant) comprising 50-90 wt% of the monomer of the first dispersant, 5-45 wt% of the monomer of the second dispersant monomer, and 0.5-40 wt% of the monomer of the third dispersant; and a polycarboxylic acid monomer (fifth dispersant) represented by the following Formula 4: wherein R 1 is a hydrogen atom or methyl; R 2 O is alkylene oxide with 1 to 4 carbon atoms or a mixture of two or more of the alkylene oxides, and if it is the mixture, it can be added in a random or block form; R 3 is alkyl with 1 to 4 carbon atoms; and n is an integer of 1-50; wherein R 4 is a hydrogen atom or methyl; M 1 is a hydrogen atom, monovalent metal atom, divalent metal atom, ammonium or organic amine group; wherein R 5 is a hydrogen atom or methyl; R 6 is alkylene with 1 to 4 carbon atoms, phenylene or alkyl phenylene with 1 to 4 carbon atoms; R 7 O is alkylene oxide with 1 to 4 carbon atoms or a mixture of two or more of the alkylene oxides, and if it is the mixture, it can be added in a random or block form; and M 2 is a hydrogen atom, monovalent metal atom, divalent metal atom, ammonium or organic amine group; m is an integer of 10-50; and r is 0 or 1. wherein R 8 is a hydrogen atom or methyl; R 9 is alkylene oxide with 1 to 4 carbon atoms, and t is an integer of 1-10.