Sealed Primary Lithium-Inorganic Electrolyte Cell.
Abstract
The storage tests of the hermetic Li/thionyl chloride D cells were continued. The capacity retention after 6 months of storage at 55C was excellent at 0.25A drains. The cells underwent severe voltage delays and loss of rate capability on storage. The use of slightly wider Li anodes resulted in a three-fold increase in the rate capability. The D cells with the wider Li anode showed significantly less voltage delays compared to the previous cells after one month's storage at 72C and test at -30C. The seemingly safe (non-explosive) characteristics of the D cells with short electrodes as demonstrated in the fourth quarter were found to be misleading. Qualitative experiments on D cell explosions indicated that neither the pressure nor the cell discharge products are essential for cell explosion. The cell temperature is the critical parameter. Cell venting to achieve lowering of cell temperature and the removal of cell active materials still appears to be the most viable approach.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1975
- Accession Number
- ADA013550
Entities
People
- A. N. Dey