Accession Number:

ADA277076

Title:

Performance of the Sony Lithium-Ion Rechargeable Battery

Descriptive Note:

Technical rept. Dec 1991-Dec 1992

Corporate Author:

ARMY RESEARCH LAB FORT MONMOUTH NJ ELECTRONICS AND POWER SOURCES DIRECTORATE

Personal Author(s):

Report Date:

1993-12-01

Pagination or Media Count:

37.0

Abstract:

Sony lithium-ion cells type 20500 were tested and evaluated at different temperatures, discharge rates from C2 to 3C, and with different charge voltage cutoffs. The capacity was typical 0.8 Ah at the C2 rate at 25 deg C when charged to 4.1-volt cutoff. An energy density of 70 Whkg and 400 or more cycles was demonstrated. Charging to 4.25 volts and higher cutoffs was tested without a safety problem. The Sony charger provided a constant potential charge at 8.2 volts 4.1 voltscell. It replaces 90 of capacity within one hour and it shut off the charging after 2-12 hours. Lithium-ion batteries, Rechargeable batteries, Electrodes, Electrolytes, Organic, Charging.

Subject Categories:

  • Physical Chemistry
  • Electrical and Electronic Equipment
  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE