Abstract: An electrochemical cell having a large anode-to-cathode interface area which achieves low current density to provide high cell efficiency. The electrochemical cell includes a can containing a first electrode and a second electrode. The first electrode has an outer perimeter which substantially conforms to the interior walls of the can and further has a non-cylindrical cavity provided therein. The second electrode is disposed within the non-cylindrical cavity of the first electrode. The first and second electrodes provide an interface area that varies along the length of the cell. A separator is disposed between the first and second electrodes and a cover and seal assembly is assembled to an open top end of the can.

Abstract: An electrochemical cell having an open top container with a radial flange, and a peripheral U-shaped gasket which extends over the container flange with depending skirts to extend along both the inner and outer upper wall portions, cooperative with an inner cover compressing the inner gasket skirt radially outwardly against the container inner wall and an outer cover surrounding and compressing the gasket outer skirt radially inwardly against the container outer wall.