Key Materials Related in Electrochemical Carbon Capture Systems

Abstract

CO₂ emissions and increased concentration will be harmful to the environment. Electrochemical carbon capture, including flue gas carbon capture, ship exhaust carbon capture, and direct air carbon capture, provides a promising alternative method for thermochemical techniques due to its remarkable characteristic of low energy consumption. This review aims to summarize the recent progress via electrochemical carbon dioxide capture, including the thermodynamics and kinetics, inorganic and organic capture systems, and direct air carbon capture. Especially, recent progress on the related key materials of electrochemical carbon capture, including redox-active absorbents, Amine-based absorbents, Ion-selective membrane materials, Inorganic molten salt as media materials, and Electrode materials, is summarized. It is anticipated that this review will stimulate scholarly interest in the electrochemical capture of CO₂ and provide valuable insights for future research works concentrated on the coupling CO₂ capture and in situ conversion into solar fuels, which will not only further decrease the energy consumption, but also broaden the research area of photo(electro)catalysis, photovoltaic electrocatalysis.