IN-SITU RAMAN AND ELECTROCHEMICAL CHARACTERIZATION OF THE ROLE OF ELECTROLYTE ADDITIVES IN LI SOCL2 BATTERIES/

A simple glass cell has been constructed for in situ Raman characteriz ation of discharge products in Li/SOCl2 batteries with polyvinyl chlor ide (PVC) and LiAl(SO3Cl)(4) additives. The assembly enables the chara cterization of catholyte-soluble discharge products in the electrolyte as well as products on the lithium and carbon electrode surfaces. The effect of the additives was also examined by scanning electron micros coyy/energy dispersive spectroscopy and impedance spectroscopy and cor related to the voltage delay in batteries. The best results, as regard s to the elimination of the delay effect, were obtained with a new ele ctrolyte consisting of LiAlCl4/SOCl2 with an admixture of PVC and LiAl (SO3Cl)(4).