Lithium Rechargeable Cell with a Polymer Cathode
Abstract
Thin films of electropolymerized poly 3-methylthiophene (PMT) were used as a rechargeable cathode in Li(SO2)3AlCl4 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1991
- Accession Number
- ADA247577
Entities
People
- Charles W. Walker Jr.