A method for preparing a carbon composite material, characterized in that it comprises at least the following steps: a) a mixture is prepared comprising at least: in percentage by weight relative to the total mass of dry materials, between 80% and 97% of carbonaceous raw materials selected from coke, anthracite, recycled carbonaceous blocks and artificial graphite, and - a binder comprising a solvent which is selected from the aqueous solutions with a pH greater than 7 or from the organic solvents in which Kraft lignin and lignin are soluble, said lignin having a mass percentage relative to the total mass of dry materials comprised between 3% and 20%, and optionally at least one binding agent selected from polysaccharides and carbohydrates and whose mass represents up to 20% of the mass of lignin, on the basis of a ratio R defined by the following formula: lignin mass binder mass = R in which the binder mass corresponds to the sum of the masses of lignin, solvent and, where appropriate, at least one binder, the value of the ratio R being less than 0.25; b) The mixture obtained at the end of step a) is gelled at a temperature comprised between 5°C and 150°C until a paste of carbon composite material is obtained by varying the value of the ratio R so that the value of the ratio R of the carbon composite material paste obtained at the end of step b) is greater than 0.25; c) The paste of carbon composite material obtained at the end of step b) is shaped so as to give it a desired shape, and in that step b) is carried out by evaporating at least part of the solvent or by adding lignin to the mixture obtained at the end of step a). a) a mixture is prepared comprising at least: in percentage by weight relative to the total mass of dry materials, between 80% and 97% of carbonaceous raw materials selected from coke, anthracite, recycled carbonaceous blocks and artificial graphite, and - a binder comprising a solvent which is selected from the aqueous solutions with a pH greater than 7 or from the organic solvents in which Kraft lignin and lignin are soluble, said lignin having a mass percentage relative to the total mass of dry materials comprised between 3% and 20%, and optionally at least one binding agent selected from polysaccharides and carbohydrates and whose mass represents up to 20% of the mass of lignin, on the basis of a ratio R defined by the following formula: lignin mass binder mass = R in which the binder mass corresponds to the sum of the masses of lignin, solvent and, where appropriate, at least one binder, the value of the ratio R being less than 0.25; in percentage by weight relative to the total mass of dry materials, between 80% and 97% of carbonaceous raw materials selected from coke, anthracite, recycled carbonaceous blocks and artificial graphite, and - a binder comprising a solvent which is selected from the aqueous solutions with a pH greater than 7 or from the organic solvents in which Kraft lignin and lignin are soluble, said lignin having a mass percentage relative to the total mass of dry materials comprised between 3% and 20%, and optionally - a binder comprising a solvent which is selected from the aqueous solutions with a pH greater than 7 or from the organic solvents in which Kraft lignin and lignin are soluble, said lignin having a mass percentage relative to the total mass of dry materials comprised between 3% and 20%, and optionally at least one binding agent selected from polysaccharides and carbohydrates and whose mass represents up to 20% of the mass of lignin, on the basis of a ratio R defined by the following formula: lignin mass binder mass = R in which the binder mass corresponds to the sum of the masses of lignin, solvent and, where appropriate, at least one binder, the value of the ratio R being less than 0.25; b) The mixture obtained at the end of step a) is gelled at a temperature comprised between 5°C and 150°C until a paste of carbon composite material is obtained by varying the value of the ratio R so that the value of the ratio R of the carbon composite material paste obtained at the end of step b) is greater than 0.25; c) The paste of carbon composite material obtained at the end of step b) is shaped so as to give it a desired shape,