Scanning microsensors for measurement of local pH distributions st the microscale

被引：60
|
作者：
Park, JO [1 ]
Paik, CH [1 ]
Alkire, RC [1 ]
机构：
[1] UNIV ILLINOIS,DEPT CHEM ENGN,URBANA,IL 61801
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1996年 / 143卷 / 08期
关键词：
D O I：
10.1149/1.1837020
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Ion-selective pH microelectrodes were used to measure hydroxide ion concentration fields produced by electrochemical reduction of oxygen on 10 and 25 mu m Pt disk electrodes. The sensors were mounted on a scanning system, and the hydroxide concentration profiles over the disk electrodes were obtained. Data were compared with predictions based on the diffusion equation. The pH microelectrode was also used to verify the buildup of hydroxide ions generated by cathodic reaction on Al3Fe that was in electrical contact with Al 6061 at the rest potential in 0.6 M NaCl.
引用
收藏
页码：L174 / L176
页数：3
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