Lithium electrode for electrical energy storage device
AssigneeRockwell International Corporation
InventorSan-Cheng Lai
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Abstract
An improved lithium electrode structure comprises an alloy of lithium, silicon, and iron in specified proportions and a supporting current-collecting matrix in intimate contact with said alloy. The lithium electrode of the present invention is utilized as the negative electrode in a rechargeable electrochemical cell.
Claims16
A composite negative lithium electrode structure for an electrical energy storage device wherein said composite electrode structure comprises:
- an alloy of lithium, silicon, and iron having the empirical formula Li.sub.x SiFe.sub.y, where x has a value from 1 to 5 and y has a value from 0.125 to 1, and
- a current-collecting matrix supporting said alloy and in intimate contact therewith.
An electrical energy storage device having positive and negative electrodes spaced from one another and in contact with a lithium-containing electrolyte, wherein
- the negative electrode is a composite electrode structure which comprises an alloy of lithium, silicon, and iron having the empirical formula Li.sub.x SiFe.sub.y, where x has a value from 1 to 5 and y has a value from 0.5 to 1, and wherein a
- current-collecting matrix supporting said alloy is in intimate contact therewith.
Dependencies are inferred from the claim text.