Abstract
Impedance measurements on Li electrodes in SOCl 2 electrolytes indicate that the structure of the passivating surface layer formed in 1.8M LiAlCl 4 differs from that formed in 1.8M AlCl 3, 1.2M LiCl, 0.6M SO 2. Also, porous carbon electrodes are found to behave differently in these two electrolytes. Unpolarised stainless steel electrodes show a 67° constant phase angle impedance over a wide frequency range whereas polarised to O mV vs. Li the impedance diagram is very similar to that of Li. Finally, it is found that passivation may develop differently for Li pressed onto stainless steel from that of Li pressed onto glass.
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