Electrode assembly and secondary battery including the same

An electrode assembly comprising:

• a positive electrode plate comprising a positive electrode collector having a positive electrode coating portion and a first positive electrode non-coating portion at a first side thereof, the positive electrode coating portion having a positive electrode active material thereon, the first positive electrode non-coating portion being an exposed portion of the positive electrode collector;
• a positive electrode tab coupled to the first positive electrode non-coating portion;
• a negative electrode plate comprising a negative electrode collector having a negative electrode coating portion and a first negative electrode non-coating portion at a first side thereof, the negative electrode coating portion having a negative electrode active material thereon and facing the first side of the positive electrode collector, the first negative electrode non-coating portion being an exposed portion of the negative electrode collector;
• and
• a separator between the positive electrode plate and the negative electrode plate,
• wherein the first positive electrode non-coating portion is offset from ends of the positive electrode plate along a length direction of the positive electrode plate,
• the positive electrode plate, the separator, and the negative electrode plate are wound together about a winding axis in a jelly-roll shape,
• the first negative electrode non-coating portion overlaps the first positive electrode non-coating portion such that the first negative electrode non-coating portion and the first positive electrode non-coating portion are directly adjacent opposite sides of a portion of the separator in a direction from a center of the jelly-roll shape to an outer surface thereof, and
• the first positive electrode non-coating portion extends entirely across the positive electrode plate in a width direction of the positive electrode plate, the width direction being parallel to the winding axis and perpendicular to the length direction.