Using another set of regexes, we collected information regarding electrolytes used in CO 2 ER. As electrolytes are essential for any electrochemical reaction, this information is typically presented in the methodology section of the articles, rather than the abstract, except when the work focuses on the impact of salts in CO 2 ER selectivity. To prove this statement, we attempted this extraction solely on sentences from the abstract. This result is shown in Figure . It can be seen that just a small amount of sentences comprised the desired information. Figure (b) exhibits the results obtained with our extractions. As it can be seen, KHCO 3 emerged as the most commonly employed electrolyte in CO 2 ER, followed by Na 2 SO 4 , and KOH. These salts represent different reaction conditions utilized in CO 2 electroreduction, specifically neutral, acidic, and alkaline media. In fact, they are the most commonly used in each of these conditions , with KHCO 3 being the most frequent electrolyte overall. Additionally, we conducted a comparison of Figure (b) with the manually extracted results published in which also focused on the same objective, electrolytes employed in CO 2 ER. Notably, the top five electrolytes identified in their analysis are also present in our top five, albeit in a different order. This correspondence indicates the accuracy of our automated approach in extracting relevant information. Nevertheless, it is important to highlight that our approach encompasses a significantly larger dataset, comprising six times more papers than the study mentioned, and considers not only copper-based catalysts but a broader range of catalysts. Thereby, our analysis provides a more comprehensive view of the literature and better indicates trends and insights in this field.