Accession Number:

ADA247577

Title:

Lithium Rechargeable Cell with a Polymer Cathode

Descriptive Note:

Final rept. Oct 89-Jan 91

Corporate Author:

ARMY LAB COMMAND FORT MONMOUTH NJ ELECTRONICS TECHNOLOGY AND DEVICES LAB

Personal Author(s):

• Walker, Charles W., Jr

Report Date:

1991-11-01

Pagination or Media Count:

36.0

Abstract:

Thin films of electropolymerized poly 3-methylthiophene PMT were used as a rechargeable cathode in LiSO23AlCl4 electrolyte. Capacity was superior to porous carbon electrodes of like thickness. Pulse power levels of 2 W cm-2 were achieved, and high rate constant current pulses of four-second duration were reproducible over cycles. Cells could be recharged at potentials below 4.0 V, minimizing the formation of chlorine and thereby diminishing the capacity for corrosion. a primary cell, greater discharge capacity was obtained with thionyl chloride and sulfuryl chloride electrolytes. Since PMT becomes electrically, insulating in the reduced state, this could be used as a built-in safety feature to avert the hazards associated with abuse over-discharge. Batteries, Lithium, Polymer, Thiophenes, Cathodes, Carbon, Sulfur dioxide, 1 Chloride.

Descriptors:

• *STORAGE BATTERIES
• *CATHODES(ELECTROLYTIC CELL)
• POWER LEVELS
• THICKNESS
• ALUMINUM COMPOUNDS
• HIGH RATE
• CORROSION
• HAZARDS
• CELLS
• POLYMERS
• THIN FILMS
• FILMS
• RATES
• CARBON
• CYCLES
• LITHIUM
• CATHODES
• PULSES
• ELECTRODES
• THIOPHENES
• DIOXIDES
• THIONYL CHLORIDE
• CHLORINE
• LITHIUM COMPOUNDS
• ELECTROLYTES
• SULFUR
• POWER
• CONSTANTS
• SAFETY
• CHLORIDES

Subject Categories:

• Physical Chemistry
• Electrical and Electronic Equipment
• Electric Power Production and Distribution

Distribution Statement:

APPROVED FOR PUBLIC RELEASE