SECONDARY BATTERIES AND METHODS OF MANUFACTURING SUCH SECONDARY BATTERIES

Abstract

The present invention relates to a secondary battery comprising: an electrode assembly; a first exterior material enclosing the electrode assembly such that the electrode assembly is sealed; a second exterior material enclosing an exterior surface of the first exterior material, wherein at least a portion of the second exterior material is not bonded to the first exterior material; and an electrode lead electrically connected to the electrode assembly and configured to extend from the interior to the exterior of the first exterior material and the second exterior material.