Abstract
Adsorbed bromine on Pt and Au electrodes acts as a catalyst for dissociative adsorption of and similar to adsorbed OH (and adsorbed iodine). This fact is revealed by analyses of newly found negative differential resistances and electrochemical oscillations, appearing in a potential region where the surface coverage of adsorbed bromine decreases steeply. The present result further supports the generality of a catalytic effect of adsorbed electronegative species such as OH, Br, and I on the dissociative adsorption of peroxides such as and © 2002 The Electrochemical Society. All rights reserved.
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