论文部分内容阅读
To elucidate the effects of the hydro- genation and oxygenation of the boron-doped dia- mond (BDD) electrode on its electrochemical behav- iors, the surface morphologies and phases of the two surface-adsorption BDD films have been investigated and the cyclic voltammograms and AC impedance spectra have been measured at these two BDD electrodes. The results indicate that compared with the hydrogen-adsorption BDD film, oxygen-adsor- ption BDD film is less conductive, and has a larger surface roughness and a lower sp3/sp2 ratio. The oxygenated BDD film electrode possesses a wider electrochemical window, larger diamond film resis- tance and capacitance and a larger polarization re- sistance than hydrogenated BDD electrode. In addi- tion, the effect mechanism of the surface-adsorption of BDD electrode on its electrochemical behaviors has been discussed.
To elucidate the effects of the hydro genation and oxygenation of the boron-doped dia- mond (BDD) electrode on its electrochemical behav- iors, the surface morphologies and of the two surface-loaded BDD films have been investigated and the cyclic voltammograms and AC impedance spectra have been measured at these two BDD electrodes. The results that that compared with the hydrogen-adsorption BDD film, oxygen-adsorbtion BDD film is less conductive, and has a larger surface roughness and a lower sp3 / sp2 ratio . The oxygenated BDD film electrode possesses a wider electrochemical window, larger diamond film resistivity and capacitance and a greater polarization re- sistance than hydrogenated BDD electrode. In addi- tion, the effect mechanism of the surface-adsorption of BDD electrode on its electrochemical behaviors has been discussed.