Electrochemical Real‐Time Mass Spectrometry (EC‐RTMS): Monitoring Electrochemical Reaction Products in Real Time. Issue 22 (12th April 2019)

• Record Type: Journal Article
• Authors: Khanipour, Peyman; Löffler, Mario; Reichert, Andreas M.; Haase, Felix T.; Mayrhofer, Karl J. J.; Katsounaros, Ioannis
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 22(2019)
• Page Start: 7273
• Page End: 7277
• Publication Date: 2019-04-12
• Subjects: analytical chemistry -- CO2 reduction -- electrochemistry -- mass spectrometry -- time-resolved product analysis; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201901923
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Methods that provide real‐time information are essential to resolve transients occurring at dynamic interfaces. Now a powerful method is presented that enables the time‐ and potential‐resolved characterization of liquid and gaseous products of electrochemical reactions shortly after their formation. To demonstrate its extraordinary potential, the electrochemical real time mass spectrometry (EC‐RTMS) approach is used to determine the products of the CO2 reduction reaction (CO2 RR) during potential step or sweep experiments on pristine and in situ anodized copper. The enhanced formation of several C2+ products over C1 products is tracked directly after copper anodization, with unprecedented temporal resolution. This new technique creates exciting new opportunities for resolving processes that occur at short timescales and eventually for guiding the design of new, robust catalysts for selective electrosynthesis under dynamic operation. Abstract : A revolutionary method has been developed that allows the detection of electrochemical reaction products at the time they are formed. This enables highly sensitive, time‐ and potential‐resolved investigations of electrocatalyst selectivity for electrosynthesis reactions. The formation of a wide range of CO2 reduction products is followed during potential step and sweep experiments, for pristine and anodized copper.