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A Versatile In‐Situ Electron Paramagnetic Resonance Spectro‐electrochemical Approach for Electrocatalyst Research
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-09-28 , DOI: 10.1002/celc.202001193
Sander Neukermans 1 , Mohammad Samanipour 2 , H.Y.Vincent Ching 2 , Jonas Hereijgers 3 , Sabine Van Doorslaer 4 , Annick Hubin 5 , Tom Breugelmans 6
Affiliation  

Empirical electrocatalyst research generally consists of the synthesis and experimental characterization of catalysts and the analysis of electrolysis products by conventional analytical techniques. In‐situ electron paramagnetic resonance spectro‐electrochemistry provides an evidence‐based in‐depth understanding of the formed intermediates and the reaction mechanism enabling the desired tuning of electrocatalysts. The use of this technique has been underexploited because of the opposite requirements they impose on the conventional setup. In this work, a versatile electrode with commercially available indium tin oxide on polyethylene terephthalate (PET) was constructed for the first time which can fit inside commonly used flat cells. It allows reproducible electrodeposition of catalytic material combined with sensitive radical detection, owing to its large surface area and minimal disruption to the resonator's Q‐factor. Moreover, with a resistivity of 8–10 Ω sq−1, the surface potential of the thin semiconductor electrode within the resonator was well‐controlled, allowing targeted radical production.

中文翻译:

用于电催化剂研究的通用原位电子顺磁共振光谱电化学方法

经验性电催化剂的研究通常包括催化剂的合成和实验表征以及通过常规分析技术对电解产物的分析。原位电子顺磁共振光谱电化学提供了对形成的中间体和反应机理的深入了解,从而可以实现所需的电催化剂调节。由于对常规设置施加了相反的要求,因此尚未充分利用此技术。在这项工作中,首次构建了在聚对苯二甲酸乙二醇酯(PET)上带有可商购的氧化铟锡的多功能电极,该电极可装入常用的扁平电池中。由于其大的表面积和对谐振器Q值的破坏最小,它允许重现性的催化材料电沉积与灵敏的自由基检测相结合。此外,电阻率为8–10Ωsq -1,谐振器内的半导体薄电极的表面电势得到了很好的控制,可以有针对性地产生自由基。
更新日期:2020-11-17
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