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US 5,648,187 AGranted
Stabilized anode for lithium-polymer batteries
AssigneeMoltech Corporation
InventorTerje Absjorn Skotheim
Life of this patent
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Abstract
The invention relates to thin film solid state electrochemical cells consisting of a lithium metal anode, a polymer electrolyte and a cathode, where the lithium anode has been stabilized with a polymer film capable of transmitting lithium ions.
Claims31
A battery cell comprising:
- (a) a lithium anode;
- (b) a non-aqueous organic electrolyte containing a dissolved lithium salt;
- (c) an electrically conducting crosslinked polymer film interposed between the lithium anode and the electrolyte;
- said electrically conducting crosslinked polymer film being capable of transmitting lithium ions between the lithium anode and the electrolyte;
- and
- (d) a cathode.
3 more elements
A battery cell comprising:
- (a) a lithium anode;
- (b) a non-aqueous solid polymer electrolyte containing a dissolved lithium salt;
- (c) a lithium ion conducting polymer film interposed between the lithium anode and the electrolyte;
- said polymer film being doped electrically conductive and capable of transmitting lithium ions between the lithium anode and the electrolyte by incorporation of lithium ions, wherein said lithium ion-doped polymer film is capable of stabilizing the lithium anode against the formation of dendrites and has the capability to dissolve dendrites and further is capable of stabilizing the lithium anode against reaction with said polymer electrolyte to form a more resistive interfacial layer;
- and
- (d) a cathode.
3 more elements
Dependencies are inferred from the claim text.