Electrochemical Mass Spectrometry: Evolution of the Cell Setup for On‐Line Investigation of Products and Screening of Electrocatalysts for Carbon Dioxide Reduction
Adriana C. Queiroz, Maykon L. Souza, Mariana R. Camilo, Wanderson O. Silva, Daniel A. Cantane, Igor Messias, Maria Rodrigues Pinto, Raphael Nagao, Fábio H. B. Lima
Abstract
Abstract One of the most important current topics in the renewable and sustainable energy scenario is the CO 2 electro‐reduction reaction (CO 2 RR), which is an alternative and important route for its conversion into various high value‐added chemicals, therefore making up a CO 2 recycling process. Despite its importance and the works already developed in this field, many challenges still need to be overcome for CO 2 RR to reach high values of efficiency and selectivity. This is even more challenging considering that this reaction occurs with the transfer of several electrons, making the investigation and elucidation of the reaction mechanism a real need. Thus, several characterization techniques have been employed, and specially, the on‐line Electrochemical Mass Spectrometry (EC‐MS) technique emerges as a powerful tool, thus making possible to improve the understanding of reaction pathways, through the identification of products and intermediaries, and allowing the screening of electrocatalyst potentials for CO 2 RR. Herein, we present the evolution of adaptations of general electrochemical cell designs for the study of the CO 2 RR.