Secondary battery electrode, and method for producing same
摘要
說明書
In addition, in the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, since an active material bulk which is a molded body or sintered body capable of free-standing is sliced to produce an active mater tall film, a binder-free active material film may be produced, since there is no substantial restriction on the thickness of the active material film, an active material film in the form of a thick film may be produced, and an electrode having high loading and high mixture density may be produced.
Specifically, the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present may produce an active material bulk composed of an active material itself, a conductive material and an active material, an active material and pyrocarbon, or an active material, a conductive material, and pyrocarbon. Also or independently, since pores opening controlled in a thickness direction are formed uniformly, even in the case in which the thickness of the active material film is increased, the electrolyte solution may stably permeate, and thus, there is substantial limitation on the film thickness. Also or independently, since the particulate electrode active material in the active material bulk is highly filled or the particles are sintered with each other by pressure or pressure and heat in a molding process, an electrode having high loading and high mixture density may be produced.
In the method of producing an electrode for a secondary battery according to an exemplary embodiment of the present invention, an oriented direction of electrode active material particles in the active material film may be controlled in a cutting direction of the active material bulk, and thus, an electrolyte solution impregnation speed, output characteristics, and rate characteristics may be improved.
