Patent ID: 7326491

Claim:
An electrochemical device comprising: a pair of collector plates, each having a main part and a tab part, arranged such that the main parts oppose each other, wherein the tab parts do not oppose each other; a separator having a main part and a tab part, the separator being arranged such that the main part is disposed between the main parts of the pair of collector plates while the tab part of the separator projects out from between the main parts of the pair of collector plates, wherein the tab part of the separator is projected into a gap between the two tab parts of the collector plates; an active material layer formed on the main part of each collector plate and in contact with the separator; an electrolyte in contact with each active material layer; and an insulative fixing member securing the tab part of each collector plate and the tab part of the separator to each other, wherein the tab part of the separator has a width smaller than the gap between the two tab parts of the collector plates.