Electrode assembly and polymer secondary battery cell including the same

An electrode assembly, comprising:

• a cell stack part having a structure of a plurality of steps obtained by stacking radical units according to a size or geometric shape thereof, the radical units being classified into at least two groups having (different sizes or geometric shapes,
• wherein the radical unit has a same number of electrodes and separators which are alternately disposed and integrally combined,
• wherein each step of the cell stack part has (a) a structure in which one kind of radical unit is disposed once or repeatedly or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order,
• wherein the one kind of radical unit of (a) has a four-layered structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked together or a repeating structure in which the four-layered structure is repeatedly stacked;
• and
• wherein each of the at least two kinds of radical units of (b) are stacked by ones in the predetermined order to form the four-layered structure or the repeating structure in which the four-layered structure is repeatedly stacked.