Secondary battery electrode, and method for producing same
摘要
說明書
However, in the method of producing an electrode according to the present invention, an active material bulk having predesigned material, pore structure, and porosity is sliced to produce an independent active material film, rather than based on a slurry, and then the produced active material film is bound to a current collector to produce the electrode, thereby controlling the structure of the active material film precisely and reproducibility. In addition, in the method of producing an electrode according to the present invention, a large amount of active material film may be produced by slicing the active material bulk, and since the active material film is produced based on a completely solid active material bulk rather than a liquid phase-based slurry, an active material film having uniform quality may be mass-produced.
In addition, in the method of producing an electrode according to the present invention, the thickness in an active material region provided on the current collector may be easily controlled, only by a simple method of controlling the thickness of the film sliced from the active material bulk. In addition, since the pores through which an electrolyte solution and the like permeate are maintained uniformly and constantly, the thickness in the active material region provided on the current collector is not substantially restricted.
Besides, even in the case in which design modification of the density of the active material region, the porosity of the active material region, the thickness of the active material region, and the like is performed, various electrode production is possible only by producing the active material bulk satisfying the design conditions, and thus, the degree of design freedom is very high, and building (or change) of an electrode production facility depending on the electrode design modification is not required.
