Secondary battery electrode, and method for producing same
摘要
說明書
Here, the pyrocarbon is not interpreted limitedly as carbon derived from the carbon precursor, but may be interpreted as also including residual carbon derived from the pore forming agent or an additive such as an organic binder by a heat treatment for producing a sintered body or if necessary, a heat treatment process which is independently performed with the heat treatment for producing a sintered body.
As a specific example of using a raw material including an additive to produce the active material bulk, the active material bulk production step may include press-molding a raw material including a particulate electrode active material and a carbon precursor to produce a molded body; and heat-treating the molded body to pyrolyze the carbon precursor into carbon. Here, the electrode active material core may be a positive electrode active material or a negative electrode active material.
Considering the use of an electrode to be produced, electrical properties of the electrode active material, porosity to be desired, and the like, the kind, the content, and the like of additive included in the raw material may be adjusted, of course.
When the raw material includes a conductive material, the conductive material may be included at 1 to 30 parts by weight, as a specific example, 1 to 20 parts by weight, based 100 parts by weight of the electrode active material, but is not necessarily limited thereto.
When the raw material includes a binder, the binder may be included at 0.5 to 10 parts by weight, based on 100 parts by weight of the electrode active material, but is not necessarily limited thereto.
