electrochemical study of cu2o/cuo composite coating produced by annealing and electrochemical methods

The electrochemical behavior of a copper oxide electrode produced by annealing and electrochemical methods was studied in an acetonitrile solvent by means of the cyclic voltammetry method. the presence of different peaks of oxidation and reduction produced by repeating the potential scans, numerous variations in the current, and shifts of peak potentials in consecutive cycles have been justified. voltammograms proved that various oxidation species can be produced in solid-deposited forms of cu2os and cuos and dissolved forms of cu(ii)sol and cu(i)sol ions. the experimental results indicated that higher amounts of cu2os than cuos can be produced in the process of copper electrode annealing. also, the nature of copper species is responsible for different peak currents in the cyclic voltammograms, characterized by uv–vis and xrd spectrometric methods.