Electrochemical cell

Claim 1

In an electochemical cell which comprises a cylindrical housing and, located concentrically within the housing, a solid electrolyte separator tube which divides the interior of the housing into an inner electrode compartment in the interior of the separator tube and an outer electrode compartment between the separator tube and the housing, one of the electrode compartments respectively containing active anode material and the other containing active cathode material, the separator tube further having, located in its interior, an electrode holder in the form of an envelope of solid electrolyte material containing, in its interior, the same electrode material as is contained in the outer electrode compartment, the electrode material in the holder being in electronic contact with the electrode material in the outer electrode compartment, the improvement whereby the electrode holder comprises a plurality of panels of solid electrolyte material sealingly connected together along the peripheries thereof, each panel having an inner surface provided with a plurality of ribs or corrugations and at least some of the panels being arranged in opposed pairs, the panels of which pairs are face-to-face with each other, each panel of each said pair having a plurality of said ribs or corrugations which cross over a plurality of the ribs or corrugations of the other panel of said pair.