Secondary battery, method of manufacturing electrode assembly, and method of manufacturing secondary battery

A secondary battery comprising:

• a case comprising a body part having an opening formed therein and a cover part covering the opening;
• and
• a stacked electrode assembly accommodated in the case, the electrode assembly comprising a first electrode connected to a first substrate tab, a second electrode connected to a second substrate tab, a separator between the first electrode and the second electrode, a first lead tab having an end coupled to the first substrate tab, and a second lead tab having an end coupled to the second substrate tab and extending in a same direction as the first lead tab,
• wherein the electrode assembly comprises:
• a first adhesive member covering a coupling region between the first substrate tab and the first lead tab, the first adhesive member comprising an insulating material;
• a second adhesive member wrapping at least one of side surfaces of the electrode assembly and a portion of at least one of main surfaces of the electrode assembly;
• a third adhesive member wrapping a lower surface of the electrode assembly and a portion of at least one of the main surfaces of the electrode assembly;
• and
• a fourth adhesive member attached to at least one of the main surfaces of the electrode assembly in an inclined region where a thickness of a first electrode coating layer of the first electrode or a second electrode coating layer of the second electrode decreases relative to a thickness of the first electrode coating layer or the second electrode coating layer at a center region of the electrode assembly.