Abstract
The composite diamond/titanium electrode which has been investigated here is characterized by a multilayer structure. Termination of the diamond surface in aqueous electrolytes by CH 2 and CO is supported by electrochemical measurements. A TiC-layer is formed at the phase boundary between the diamond and the titanium. The electrode shows high overvoltages in aqueous electrolytes ( η between 1 and 2 V) for cathodic H 2 and anodic O 2 and Cl 2 evolution. This corresponds to the large band gap of diamond, Δ E=5.45 eV. Redox reactions and electrosynthesis at these novel electrodes are briefly reviewed.
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