Silver zinc electric storage cells
AssigneesMedicharge Limited, Medicor Muvek
InventorsHarold Trevor Mote, Laszlo Hajdu, Bela Ronay
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Abstract
In order to increase the cyclability life of rechargeable silver-zinc electric storage cells, the semi-permeable membrane separator between the silver and zinc electrodes comprises a laminate of plies of semi-permeable oriented cellophane foil bonded together with the electrolyte with some of the plies arranged cross-wise, as regards their direction of orientation, relative to another ply of the membrane. In a preferred embodiment a further single layer of cellophane is disposed between the silver electrode the absorbent paper layer which is normally positioned between the silver electrode and the membrane.
Claims5
A rechargeable silver-zinc electric storage cell comprising a casing enclosing a silver electrode and a zinc electrode, a separator comprising an imperforate semi-permeable membrane disposed between said electrodes, and an electrolyte, said membrane being sealed to the casing so that the only ion path between the electrodes is through said membrane, characterised in that said imperforate semi-permeable membrane comprises a laminate of plies of semipermeable oriented foil material bonded together with the electrolyte with some of the plies arranged cross-wise, as regards their direction of orientation, relative to another ply of the membrane.
Dependencies are inferred from the claim text.