Bipolar Electrodes for Rapid Screening of Electrocatalysts

被引：139
作者：
Fosdick, Stephen E.
Crooks, Richard M. [1 ]
机构：
[1] Univ Texas Austin, Dept Chem & Biochem, Ctr Electrochem, Austin, TX 78712 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 02期
关键词：
SCANNING ELECTROCHEMICAL MICROSCOPY; ELECTROGENERATED CHEMILUMINESCENCE; DISCOVERY; SYSTEMS; SURFACE; OXIDE; AG;
D O I：
10.1021/ja210354m
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report a method for rapid screening of arrays of electrocatalyst candidates. The approach is based on simultaneous activation of the oxygen reduction reaction (ORR) and Ag electrodissolution at the cathodic and anodic poles, respectively, of bipolar electrodes (BPEs). Because the electrochemical activity of the two poles is directly coupled via the BPE, the extent of Ag electrodissolution is directly related to the ORR activity. The screening process lasts similar to 12 min. Because Ag dissolution provides a permanent record of catalyst activity, the screening results can be determined by simple optical microscopy after the electrochemical experiment. The method has the potential to provide quantitative information about electrocatalyst activity.
引用
收藏
页码：863 / 866
页数：4
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