Revisiting Electrocatalytic CO2 Reduction in Nonaqueous Media: Promoting CO2 Recycling in Organic Molecules by Controlling H-2 Evolution

Author(s)

dos Reis, Eduardo Arizono ; da Silva, Gelson T. S. T. ; Santiago, Elisabete I. I. ; Ribeiro, Caue

• Document type: Journal article
• Source: ENERGY TECHNOLOGY; v. 11, n. 6, p. 18-pg., 2023-03-09.

Abstract

Electrochemical CO2 reduction to fuels or commodity chemicals using renewable energy has drawn attention as a strategy for closing the anthropogenic chemical carbon cycle. More than that, enhancing the C-C coupling between the intermediates could lead to producing a range of high-value multi-carbon molecules. Although the research mainly focuses on the aqueous media for the electrochemical CO2 reduction reaction (eRRCO(2)), using nonaqueous electrolytes has the advantage of suppressing the hydrogen evolution reaction, controlling the proton-assisted reduction reactions, and favoring the C-C coupling. Herein, the use of nonaqueous electrolytes for eRRCO(2) and the components of the electrochemical reactor that affect the selectivity of the reaction are revisited. This review provides a perspective view of recent findings compared to well-established papers while presenting what is known about eRRCO(2) in nonaqueous media. (AU)

• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 22/10255-5 - Architectures based on metal phosphides and nitrides for photo(electro)chemical conversion of CO2 into C2+ compounds
• Grantee: Gelson Tiago dos Santos Tavares da Silva
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program