摘要:
The present invention relates to a lithium secondary battery, in which an electrode assembly that can be charged/discharged is sealed inside a exterior member, and electrode terminals (positive electrode terminal/negative electrode terminal), which are electrically connected to the electrode assembly, partially protrude out of the exterior member, wherein the portion of the electrode terminals that is exposed out of exterior member of the lithium secondary battery is plated with a corrosion-resistant metal. According to the present invention, corrosion-resistant metals, such as cobalt, copper, nickel, and platinum, are directly plated onto the electrode terminals so as to enhance corrosion resistance of the electrode terminals, thereby improving performance of the lithium secondary battery.
摘要:
Disclosed is a pouch including a first sealing portion wherein an upper sheet and a lower sheet are sealed, and a second sealing portion present in a partial or entire region of the first sealing portion. The pouch further includes a second sealing portion present in a partial or entire region of the first sealing portion, thus efficiently preventing permeation of external moisture and leakage of electrolyte solution through the first sealing portion and enabling fabrication of batteries with improved capacitance maintenance and resistance increase.