Electric accumulator cell with at least one dissoluble electrode

DETAILED DESCRIPTION What is claimed: 1.
In an electric accumulator cell including at least one electrode formed of an inert conducting material insoluble in said electrolyte and an active metal which on discharge formed a chemical compound soluble in the electrolyte, the improvement which comprises forming said electrode of a central conducting layer having an outer layer disposed on both planar sides thereof, the planar sides of the outer layers being smaller than the planar sides of the central layer so that the central layer has a bare portion about its periphery, at least part of the bare portion being covered with an electrically insulating material, the width of the bare portion between the insulating material and the outer layer being at least twice the thickness of the outer layer, each layer being composed of an inert conducting material insoluble in said electrolyte.
2.
The cellof claim 1 wherein all of said layers are porous.
3.
The cells of claim 1 wherein said central conducting layer is a perforated sheet or net having disposed on both planar sides thereof an outer layer which is a porous net.
4.
The cell of claim 3 wherein said central conducting layer comprises iron.
5.
The cell of claim 3 wherein said central conducting layer comprises nickel-plated iron.
6.
The cells of claim 3 wherein said central conducting layer comprises metal-coated plastic.
7.
The cell of claim 3 wherein said outer layers are comprised of metal or plastics.
8.
The cell of claim 7 wherein said outer layers are nickel-plated.
9.
The cell of claim 3 wherein the characterized outer layers are connected to each other at certain points passing through perforations in the central layer.
10.
The cell of claim 9 wherein the said outer layers are not directly connected to the central layer.
11.
The cells of claim 1 wherein the cell further includes a separator disposed near the dissoluble electrode and the electrode and/or separator is arranged to vibrate in a direction parallel to the plane surface of the electrode