Electrode assembly with tape and electrochemical device comprising the same

An electrode assembly comprising:

• an electrode having an electrode active material layer formed on at least one surface of a current collector, the electrode active material layer extending in a first direction to a first peripheral edge and the current collector extending in the first direction to a second peripheral edge, the first and second peripheral edges together forming a free edge of the electrode at a same location, the electrode defining a lower surface;
• a separator defining an upper surface that faces and confronts the lower surface of the electrode, the separator extending in the first direction to a third peripheral edge beyond the same location;
• and
• an insulating adhesive tape adhered to the upper surface of the separator and having first and second portions, the first portion including at least half of the insulating adhesive tape and being interposed between the lower surface of the electrode and the upper surface of the separator, the second portion extending in the first direction beyond the free edge of the electrode to a fourth peripheral edge of the insulating adhesive tape, the third peripheral edge of the separator extending in the first direction beyond the fourth peripheral edge of the insulating adhesive tape.