Abstract
A corrosion of Al in nonaqueous electrolytes containing or was investigated by using electrochemical methods and surface analyses (X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy). The corrosion actively occurred in propylene carbonate (PC) containing or at more cathodic potential than 3.8 V vs. These results indicate that and do not provide a good passivation surface film on the Al electrode. In order to suppress the corrosion, a small amount of HF was added. This additive produced a new surface film that worked as a passivation film. However, the corrosion of Al was still observed in the potential region more anodic than 3.8 V vs. On the other hand, Al electrode was stable in PC containing In this electrolyte, the surface film on Al works as a passivation film, probably due to a large distribution of negative charge on this electrolyte. © 2002 The Electrochemical Society. All rights reserved.
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