US Patent 7326491 Electrochemical device

An electrochemical device comprises collector plates having main parts and tab parts and being arranged such that the main parts oppose each other; a separator having a main part and a tab part and being arranged such that the main part is disposed between the main parts of the collector plates while the tab part projects out from between the main parts of the collector plates; an active material layer formed on each of the main parts of the collector plates and in contact with the separator; an electrolyte in contact with each active material layer; and an insulative fixing member securing the tab parts of the collector plates and the tab part of the separator to each other.