| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pouch including a first sealing portion where an upper sheet and a lower sheet are sealed and including a second sealing portion in a partial or entire region of the first sealing portion, and also provide a pouch-type secondary battery using the pouch. <P>SOLUTION: A partial or entire region of a sealing portion of a pouch-type battery includes another sealing portion, thereby efficiently preventing permeation of external moisture and leakage of internal electrolyte solution and exhibiting improved long-term storage characteristics and thus improved battery performance. <P>COPYRIGHT: (C)2013,JPO&INPIT |
