Bipolar Electrodes for Rapid Screening of Electrocatalysts
Bipolar Electrodes for Rapid Screening of Electrocatalysts
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DOI：
10.1021/ja210354m
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发表时间：
2012-01-18
影响因子：
15
通讯作者：
Crooks, Richard M.
中科院分区：
文献类型：
--
作者：
Fosdick, Stephen E.;Crooks, Richard M.
我们报告了一种快速筛选候选电催化剂阵列的方法。该方法是基于同时激活氧还原反应（ORR）和Ag电溶，分别在双极电极（BPEs）的阴极和阳极极。由于极性的电化学活性是通过BPE直接耦合的，因此Ag电溶的程度与ORR活性直接相关。筛选过程持续约12分钟。由于银溶解提供了催化剂活性的永久记录，因此筛选结果可以在电化学实验后通过简单的光学显微镜确定。该方法具有提供有关电催化剂活性的定量信息的潜力。
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.