An electrochemical cell, including: a first current collector including a first collecting section in contact with a first electrode and including a first connecting section; a second current collector overlapping with the first current collector and including a second collecting section in contact with a second electrode and including a second connecting section; wherein the first and second current collectors are mutually connected via their first and second connecting sections and a distance between the first and second connecting sections is equal to or smaller than 50% of the distance between the first and the second collecting sections.