Secondary battery electrode, and method for producing same
摘要
說明書
In addition, in the conventional slurry-based technique, since the pore structure is unintentionally collapsed in a rolling process of the active material Layer, there is a problem that it is difficult to substantially implement both higher density and maintenance of voids. However, in the production method according to the present invention, since the pore structure and the porosity of the active material bulk already having physically (mechanically) stable strength are maintained as they are on the cut film (active material film), both higher density and maintenance of voids impregnated with an electrolyte solution may be implemented.
Accordingly, in the method of producing an electrode according to an exemplary embodiment of the present invention, the pore structure of the active material film may be controlled only by adjusting the pore structure of the active material bulk, and also the porosity of the active material film may be controlled by the porosity of the active material bulk.
The method of producing an electrode according to an exemplary embodiment of the present invention may be a method of producing an electrode for an electrolyte solution-based secondary battery, advantageously an electrode for an electrolyte solution-based lithium secondary battery, and more advantageously a lithium secondary battery including a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte solution.
This is because a problem to be solved in the present invention is to provide a method of producing an electrode through which an electrolyte solution may permeate smoothly and is capable of high loading and/or being highly mixed, in the electrode provided in the lithium secondary battery including an electrolyte solution.
