Accession Number : ADD012861

Title :   Lithium Composite Anode.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : McManis,George E ; Fletcher,Aaron N ; Bliss,Dan E

Report Date : 30 Dec 1986

Pagination or Media Count : 3

Abstract : 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.

Descriptors :   *PATENTS, *ANODES, *ANODIC COATINGS, *LITHIUM, CHEMICAL REACTIONS, ELECTROLYTES, IRON, POWDERS, LITHIUM ALLOYS, MELTS, NITRATES, HIGH DENSITY, HIGH ENERGY, HIGH RATE, INVENTIONS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE