Secondary battery electrode, and method for producing same
摘要
說明書
In the above description of the method of producing an electrode, the electrode, or the secondary battery according to the present invention, being capable of free-standing means that an active material bulk or an active material film may support the weight itself in the state in which the active material bulk or active material film maintains the shape. In addition, free-standing may mean that the active material bulk or the active material film may be transferred or positioned itself without a separate supporting member. Experimentally, a film capable of free-standing may mean a film in the state which when a film is placed on a hollow ?-shaped support having a flat bottom and flat pillars in both sides, with only 2 mm portions of both sides of the film hanging on the support (pillar), and a standard weight of 1 g is placed on a central portion of the film, a downward sagging degree of the specimen is within 1 mm, based on a film having a width of 1 cm, a length of 5 cm, and a thickness to accord with an active material region design thickness of a secondary battery to be desired.
The method of producing an electrode for a secondary battery according to the present invention includes: a cutting step of slicing an active material bulk to produce an active material film; and a binding step of integrating a current collector and the active material film.
