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US 4,069,375 AGranted
Manufacture of galvanic elements having lithium or calcium electrodes
AssigneeVarta Batterie Aktiengesellschaft
InventorHelmut Lauck
Life of this patent
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Abstract
Lithium- or calcium-electrode elements are manufactured in air by first pretreating the electrode foil with a gas which reacts with the metal foil surface to form a temporary protective layer.
Claims12
A method of manufacturing electrodes of lithium or calcium metal for galvanic elements, comprising the steps of
- immersing the electrode metal in an atmosphere of gas which reacts with the electrode metal to form upon the metal surface a thin, continuous, non-hygroscopic covering layer, and
- thereafter using the metal in an electrode.
Dependencies are inferred from the claim text.