Patent ID: 8634181

Claim:
A supercapacitor with a double electrochemical layer, comprising two juxtaposed complexes ( 1 , 2 ) spaced apart by a distance d along a direction parallel to a longitudinal axis, and a common complex ( 3 ) facing each of the juxtaposed complexes ( 1 , 2 ) and separated from the latter by at least one separator ( 4 ), each of said juxtaposed and common complexes including a current collector and at least one electrode, the separator ( 4 ) and said juxtaposed and common complexes ( 1 , 2 , 3 ) being wound together in turns along the longitudinal axis in order to form a wound element, wherein the separator ( 4 ) includes at least two portions spaced apart by a distance w of less than the distance d, each of the portions entirely separating said juxtaposed and common complexes ( 1 , 2 , 3 ) facing each other.