Characterization of Diamond Electrode Deposited on a Porous Active Carbon Pellet
Active carbon pellet as substrates for the deposition of diamond films were prepared by chemical vapor deposition (CVD). The ballas diamond morphologies of the as-deposition films were analyzed by scanning electron microscopy. Raman spectroscopy was used to investigate the crystal structure. The electrochemical behavior of a boron-doped diamond film electrode prepared on porous active carbon substrates was studied by cyclic voltammetry and AC Impedance. The diamond films exhibited a ballas morphology and contained microcrystallites. The potential windows in acidic, neutral or alkaline medium were respectively 4.4 V, 4.0 V and 3.0 V. In the electrolyte including Ferri/Ferrocyanide, the electrode surface kept good activity, and the electrochemical reaction occurring on the surface was a diffusion-controlled reaction, with good quasi-reversibility.
Active Carbon Pellet diamond film electrode electrochemical
LI Rong-bin SHANG Hai-long DU Hao-ming LIN Yun
Department of Material Forming, Shanghai Dianji University, Shanghai 200245, China
国际会议
北京
英文
76-78
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）