학술논문

Review on strategies for improving the added value and expanding the scope of CO2 electroreduction products.
Document Type
Article
Source
Chemical Society Reviews. 5/21/2024, Vol. 53 Issue 10, p5149-5189. 41p.
Subject
*COUPLING reactions (Chemistry)
*ELECTROLYTE solutions
*ORGANONITROGEN compounds
*CARBON offsetting
*GLOBAL warming
*ELECTROLYTIC reduction
*ELECTROSYNTHESIS
*NITROGEN compounds
Language
ISSN
0306-0012
Abstract
The electrochemical reduction of CO2 into value-added chemicals has been explored as a promising solution to realize carbon neutrality and inhibit global warming. This involves utilizing the electrochemical CO2 reduction reaction (CO2RR) to produce a variety of single-carbon (C1) and multi-carbon (C2+) products. Additionally, the electrolyte solution in the CO2RR system can be enriched with nitrogen sources (such as NO3−, NO2−, N2, or NO) to enable the synthesis of organonitrogen compounds via C–N coupling reactions. However, the electrochemical conversion of CO2 into valuable chemicals still faces challenges in terms of low product yield, poor faradaic efficiency (FE), and unclear understanding of the reaction mechanism. This review summarizes the promising strategies aimed at achieving selective production of diverse carbon-containing products, including CO, formate, hydrocarbons, alcohols, and organonitrogen compounds. These approaches involve the rational design of electrocatalysts and the construction of coupled electrocatalytic reaction systems. Moreover, this review presents the underlying reaction mechanisms, identifies the existing challenges, and highlights the prospects of the electrosynthesis processes. The aim is to offer valuable insights and guidance for future research on the electrocatalytic conversion of CO2 into carbon-containing products of enhanced value-added potential. [ABSTRACT FROM AUTHOR]