An ambient temperature rechargeable lithium battery with characteristics suitable for load-levelling and electric vehicle applications was developed. The battery was to use an organic electrolyte and a dissolved depolarizer. Studies were made of transition metal depolarizers. Their major problem was excessive self-discharge. The depolarizer of choice is lithium/polysulfide, which is very soluble and discharges and recharges readily. Its self-discharge reaction with lithium is slow and leads to soluble lower polysulfides. The initial problems of this system which operates a little above room temperature (approximately 50 degrees Centigrade) were moderate rate capability and modest recharging of the lithium electrode. Effort was directed at improving the recharging of the lithium electrode and its performance was greatly improved. Improvements in the cycling performance were in large part due to the development and refinement of techniques for the preparation of high purity electrolyte. It was found that a procedure in which the solvent is passed through a column of neutral alumina, the electrolyte prepared and pre-electrolyzed in a specific way, then passed through a second column of alumina gives the best cycling results. Promising lithium cycling results were achieved using an aluminum alloying substrate and a one molar lithium arsenic fluoride/tetrahydrofuran electrolyte.

  • Corporate Authors:

    EIC Corporation

    67 Chapel
    Newton, MA  United States  02192

    National Science Foundation

    Applied Science and Research Applications, 1800 G Street, NW
    Washington, DC  United States  20550
  • Authors:
    • Brummer, S B
    • Dampier, F W
    • Koch, V R
    • Rauh, R D
    • Reise, T F
  • Publication Date: 1978-1

Media Info

  • Pagination: 284 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00192065
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NSF/RA-780382 Final Rpt.
  • Contract Numbers: NSF-AER75-03779
  • Files: TRIS
  • Created Date: Jul 11 1979 12:00AM