Lithium Composite Anode.
DEPARTMENT OF THE NAVY WASHINGTON DC
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One object of this invention is a method of manufacturing a lithium composite anode for batteries. Another object of the invention is a lightweight lithium-lithium alloy composite anode which discharges at high rates in a variety of electrolytes. Yet another object of this invention is an easily fabricated anode made of a composite of elemental lithium and lithium-aluminum or lithium-silicon. Still another object of the invention is a composite having greater stability against unwanted chemical reactions that may degrade battery performance. This invention allows for discharge of a lightweight lithium-lithium alloy composite anode at high rates in a variety of electrolytes. Experimentation shows discharges in molten nitrate electrolytes with cell voltages over 2.5 volts. The lightweight lithium composite anode first discharges at a potential near that of elemental lithium, and then discharges at the potential of the lithium alloy. Therefore, most of the anodic material is electroactive. This allows for very high energy densities in comparison with lithium-iron composites where the iron powder.
- Electrical and Electronic Equipment