| 摘要 |
The present invention relates to a stack-folding type electrode assembly in which a plurality of unit cells are overlapped by enclosing, with a second separator, the unit cells of a pull cell or a bi-cell comprising a positive electrode, a negative electrode, and a first separator interposed between the positive electrode and the negative electrode, wherein a first binder is coated on a surface of at least portion of the first separator, and a second binder is coated on a surface of at least portion of the second separator, and the content of the second binder is contained more than the content of the first binder. Accordingly, the present invention prevents a lifting phenomenon inside a battery, restrains the expansion of the battery, and restrains the deformation thereof even if external impacts are applied thereto. |
