Effects of the surface-adsorption of boron-doped diamond electrode on its electrochemical behavior

被引：3
|
作者：
Liu Fengbin
Li Xuemin
Wang Jiadao
Liu Bing
Chen Darong [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2006年 / 51卷 / 15期
关键词：
hydrogenation; oxygenation; boron-doped diamond film; electrochemical behavior;
D O I：
10.1007/s11434-006-2024-1
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
To elucidate the effects of the hydrogenation and oxygenation of the boron-doped diamond (BDD) electrode on its electrochemical behaviors, 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-adsorption BDD film is less conductive, and has a larger surface roughness and a lower sp(3)/sp(2) ratio. The oxygenated BDD film electrode possesses a wider electrochemical window, larger diamond film resistance and capacitance and a larger polarization resistance than hydrogenated BDD electrode. In addition, the effect mechanism of the surface-adsorption of BDD electrode on its electrochemical behaviors has been discussed.
引用
收藏
页码：1903 / 1908
页数：6
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