Electrode for lithium-ion secondary battery and manufacturing process for the same

摘要

An electrode for a lithium-ion secondary battery includes a current collector and an electrode layer formed on a surface of the current collector, and including a binder resin, an active material and a conductive additive. The electrode layer includes a first electrode layer and a second electrode layer whose binder-resin concentration is higher than a binder-resin concentration in the first electrode layer. The first electrode layer is disposed on the surface of the current collector and the second electrode layer is disposed on the surface of the current collector at least so as to make contact with the surface of the current collector and at least a side face of the first electrode layer.

主权项

1. An electrode for a lithium-ion secondary battery comprising:
a current collector; and an electrode layer being formed on a surface of said current collector, said electrode layer comprising:
a first electrode layer including a first binder resin, a first active material and a first conductive additive; anda second electrode layer, including a second binder resin, a second active material and a second conductive additive, where a binder-resin concentration in the second electrode layer is higher than a binder-resin concentration in said first electrode layer;said first electrode layer being disposed on the surface of said current collector at least so as to make contact with the surface of said current collector; andsaid second electrode layer being disposed on the surface of said current collector at least so as to make contact with the surface of said current collector and a side face of said first electrode layer,said first electrode layer and said second electrode layer are each electrically conductive.