Secondary battery electrode, and method for producing same
摘要
說明書
When the raw material includes the electrode active material in a composite particle form of electrode active material core-binder shell, according to a specific bulk formation method, the active material bulk may contain a binder derived from a shell of the composite particles (organic binder), or carbon remaining after carbonization or pyrolysis of the binder (organic binder) contained in the shell of the composite particles.
As a specific example of using the composite particles to produce the active material bulk, the active material bulk production step may include press-molding a raw material including composite particles having a core-shell structure of electrode active material core-carbon precursor shell as a particulate electrode active material to produce a molded body; and heat-treating the molded body to pyrolyze a carbon precursor of the shell into carbon. Here, the electrode active material core may be a positive electrode active material or a negative electrode active material.
The raw material may further include one or more additives selected from the group comprising a binder (second binder), a conductive material, a carbon precursor, and a pore forming agent, together with the particulate electrode active material described above.
In addition, when the raw material includes a binder, or more uniform and rapid mixing of materials is required, the raw material may further include a solvent that dissolves a binder contained as an additive (second binder) or a dispersion medium which disperses the raw material.
