Surface films on lithium in acetonitrile-sulphur dioxide solutions

✍ Scribed by Y. Geronov; B. Puresheva; R.V. Moshtev

• Book ID: 103897934
• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 886 KB
• Volume: 9
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(83)87028-1

✦ Synopsis

The growth of the passive film on Li in acetonitrilesulphur dioxide solutions of LiBr, LiAsF,, LiAlCL and LiC104 with time has been followed by galvanostatic pulse measurements and SEM observations. It was found that the specific conductivity of the primary film on Li in AN-SO,-LiBr solutions (k = 4 X 10mg ohm-' cm-') is practically insensitive to changes in concentration of SOZ and LiBr. The substitution of Bi by As& anions in AN-SO2 electrolytes significantly changes the properties of the film; the rate of growth and the "steady state" value of the polarization resistance are much higher as compared with those of films obtained on Li in Bi-containing electrolytes. Water contamination above 1000 ppm enhances the growth of the passive film as compared with that in "dry" electrolytes.