Accession Number:

ADA273614

Title:

High Power/High Temperature Battery Development

Descriptive Note:

Final rept. Sep 1989-Jul 1992

Corporate Author:

WESTINGHOUSE NAVAL SYSTEMS DIV CLEVELAND OH

Personal Author(s):

Report Date:

1992-09-01

Pagination or Media Count:

50.0

Abstract:

The lithium alloycobalt disulfide Li-alloyCoS2 electrochemistry is currently under development at Westinghouse as a high-power, pulsed energy source for mobile electric weaponry. The goals of this LABCOM sponsored program were to optimize both cell components and operating conditions. Candidate cathode materials were investigated, and only CoS2 was identified as having excellent characteristics when operated in its higher voltage region. Alternate disulfides and chalcogenides could not match CoS2 for pulse performance and open circuit stand capability. Separator materials were investigated as replacements for the baseline Maglite D MgO. Silicon nitride, yttria, Magox Super Premium MgO and sintered, porous AIN were identified as suitable candidates for qualification as Maglite D replacements. The AIN was a dimensionally stable material and exhibited very low residual or final currents. Cells were redesigned and tested based upon the above findings. The cycle life goal of 200 cycles was achieved with cells employing the reduced quantities of the active materials. The best cell tested exceeded 350 cycles and 2500 individual 4-second pulses. Molten salt battery systems, Pulse power, Lithium, Metal sulfide

Subject Categories:

  • Physical Chemistry
  • Properties of Metals and Alloys
  • Electricity and Magnetism
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE