Secondary battery electrode, and method for producing same
摘要
說明書
For a ratio being obtained by dividing an absolute value of a difference between porosity in a surface region and porosity in a central region by porosity in a central region, based on a cross section in a thickness direction, the active material film according to an exemplary embodiment of the present invention may have a ratio of 10% or less.
The active material film according to an exemplary embodiment of the present invention may further include one or more selected from the group comprising pyrocarbon and conductive materials.
The active material film according to an exemplary embodiment of the present invention may have an apparent porosity of 10 to 45%.
In another general aspect, an electrode for a secondary battery based on an electrolyte solution is included.
The electrode for a secondary battery according to the present invention is an electrode for a secondary battery based on an electrolyte solution, and includes a binder-free active material film which contains an electrode active material and contains no organic binder.
The electrode for a secondary battery according to the present invention is an electrode for a secondary battery based on an electrolyte solution, and may be an electrode which contains an electrode active material, in which the active material film is bound to at least one surface of a current collector by an adhesive.
In an electrode for a secondary battery according to an exemplary embodiment, the active material film may be a free-standing film.
In an electrode for a secondary battery according to an exemplary embodiment, the active material film may further include one or more selected from the group comprising conductive materials and pyrocarbon.
