LITHIUM/DISULFIDE CELLS CAPABLE OF LONG CYCLE LIFE

The lithium-alloy/disulfide cell has undergone improvements to provide a very stable, high performance upper-plateau (UP) FeS2 electrode. Prismatic UP FeS2 cell tests (12--24 Ah capacity) with a LiCl-LiBr-KBr eutectic electrolyte have demonstrated 1000 deep discharge cycles at 400C with less than a 20% drop in capacity and without reduced power capability. Previous lithium-alloy/disulfide cells, which were based on a two voltage-plateu FeS2 electrode and LiCl-Kcl eutectic electolyte had a life expectancy of only 100 cycles. Both time- and cycle-related capacity loss mechanisms have been eliminated with the improved cell design. In addition, new cell design features of overcharge tolerance and overdischarge safeguarding enhance battery durability. The performance prospects of a Li-alloy/UP FeS2 battery for an IDSEP van application are discussed. A specific energy of 150 Wh/kg for this battery after 1000 cycles of operation is projected.

• Corporate Authors:

  Argonne National Laboratory

  9700 South Cass Avenue
  Argonne, IL  United States  60439
• Authors:
  • KAUN, T D
  • Holifield, T F
  • DELUCA, W H
• Publication Date: 1988

Media Info

• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Lithium batteries; Service life
• Old TRIS Terms: Cycles; Discharge
• Subject Areas: Design; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00487943
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CONF-881061-11
• Files: TRIS
• Created Date: Sep 30 1989 12:00AM