Secondary battery electrode, and method for producing same
摘要
說(shuō)明書(shū)
As the solvent (aqueous solvent or organic solvent) included in the raw material, an aqueous solvent or an organic solvent which is commonly used in the production of a positive or negative electrode active material slurry in the field of a secondary battery, is fine. Specifically, the aqueous solvent may include solvents such as water, isopropyl alcohol, propanol, methanol, ethanol, and the organic solvent may include acetone, N-methyl-2-pyrrolidone (MMP), dimethylformamide, dimethylacetamide, chloroform, dichloromethane, trichloroethylene, normal hexane, N,N-dimethylaminopropylamine, ethylene oxide, tetrahydrofuran, a mixed solvent thereof, or the like, but is not limited thereto.
In the production method according to an exemplary embodiment of the present invention, the active material bulk may be a molded body produced by applying physical force to the raw material or a sintered body produced by applying heat to the molded body.
In the molded body, the electrode active material undergoes plastic deformation and is bound to each other to have constant strength, and in the sintered body, water is bound integrally by sintering to have constant strength. Thus, the active material bulk which is the molded body or the sintered body may be a binder-free active material bulk containing no organic binder, and accordingly, an active material film or a binder-free active material film may be produced. However, this is an example which is possible by the production method according to an exemplary embodiment of the present invention in which an active material bulk which is a molded body or a sintered body is produced and sliced to produce the active material film, and in the present invention, the binder-free active material bulk is not limited to the binder-free active material film.
