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US 6,733,924 B1Granted
Lithium anodes for electrochemical cells
AssigneeMoltech Corporation
InventorsTerje A. Skotheim, Christopher J. Sheehan, Yuriy V. Mikhaylik
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Abstract
Provided are lithium anodes for use in electrochemical cells, where the anode active layer has a first layer comprising lithium metal and a second layer of a temporary protective material, wherein the temporary protective material is a metal capable of forming an alloy with lithium metal or is capable of diffusing into lithium metal. The present invention also pertains to electrochemical cells comprising such anodes.
Claims32
An anode of an electrochemical cell, wherein said anode comprises:
- an anode active layer, which anode active layer comprises:
- (i) a first layer comprising lithium metal;
- (ii) a second layer of atemporary protective metal in contact with a surface of said first layer;
- and
- (iii) a third layer comprising a single ion conducting layer, wherein said third layer is in contact with said second layer on the side opposite to said first layer and wherein said single ion conducting layer comprises a glass selected from the group consisting of lithium silicates, lithium borates, lithium aluminates, lithium phosphates, lithium phosphorus oxynitrides, lithium silicosulfides, lithium permanosulfides, lithium lanthanum oxides, lithium tantalum oxides, lithium niobium oxides, lithium titanium oxides, lithium borosulfides, lithium aluminosulfides, and lithium phosphosulfides, and combinations thereof.
2 more elements
An electrochemical cell comprising:
- (a) a cathode comprising a cathode active material;
- (b) an anode;
- and
- (c) a non-aqueous electrolyte interposed between said anode and said cathode;
- wherein said anode comprises an anode active layer, which anode active layer comprises:
- (i) a first layer comprising lithium metal;
- (ii) a second layer of a temporary protective metal in contact with a surface of said first layer;
- and
- (iii) a third layer comprising a single ion conducting layer, wherein said third layer is in contact with said second layer on the side opposite to said first layer and wherein said single ion conducting layer of said third layer comprises a glass selected from the group consisting of lithium silicates, lithium borates, lithium aluminates, lithium phosphates, lithium phosphorus oxynitrides, lithium silicosulfides, lithium permanosulfides, lithium lanthanum oxides, lithium tantalum oxides, lithium niobium oxides, lithium titanium oxides, lithium borosulfides, lithium aluminosulfides, and lithium phosphosulfides, and combinations thereof.
6 more elements
Dependencies are inferred from the claim text.