Investigation of Lithium Thionyl Chloride Battery Safety Hazards.
Quarterly technical progress rept. 1 Jan-31 Mar 82,
GTE COMMUNICATIONS PRODUCTS CORP WALTHAM MA POWER SYSTEMS OPERATION
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Scanning electron and optical microscopic investigation of an overdischarged cathode from a cathode limited LiSOCl2 cell reveal a three-dimensional reticulated lithium dendrite structure. Individual dendrites do not grow and longer than about 50 microns or any thicker than about 4 microns in diameter before branching at random angles. E.S.R. spectra of 50 and 100 overdischarged anode limited cells reveal a third chemical species carrying an unpaired electron which is distinct from the two radical species observed during discharge. No significant difference is observed between the Raman spectra of 100 discharged electrolyte and 50 cathode limited overdischarged electrolyte. The some holds true for infrared spectra. The Raman spectra of 90 anode limited overdischarged electrolyte shows most of the peaks occuring at 100 discharge in addition to 687, 727, 819, and 854 per cm. The infrared spectrum of the same solution shows most the the features occuring at 100 discharge in addition to the reduction of 981 cm-1 and growth of peaks at 1397,1085,1070 shoulder 661 and 602 cm-1. Peaks at 1070 and 661 always occur weakly in discharged electrolyte spectra and are quite strong in the spectrum of Li2S04 saturated electrolyte.
- Electric Power Production and Distribution
- Safety Engineering
- Atomic and Molecular Physics and Spectroscopy