In recent years, CO2 electroreduction (CO2RR) technology has gained more and more attentions as an option toward carbon-neutrality target set in "Paris Agreement", which not only enables the upgrade of greenhouse CO2 to chemical feedstocks, but also directs the efficient usage of renewable electricity. The reduction products can range from C1 to C2 or even C3 according to the protons-coupled-electrons transfer (PCET) steps, which contain different numbers of protons and electrons. Particularly, multi-carbon products (C2+) with higher energy densities and economic values are more desired but difficult species. To realize the efficient CO2RR for C2+ production, systematic strategies and impartial criteria are highly desired to comprehensively solve the challenges, including catalysts, catalytic interface, electrolyte and electrolyzer. In this speech, we will initially demonstrate the necessity of electrocatalytic CO2 reduction and establish its economic analysis. Then, we introduce how to construct efficient electrocatalyst. Taking the state-of-art copper (Cu) catalysts as an example, we introduce how theoretical calculations guide the design of ideal catalysts, advanced operando characterization to deeply understand the catalytic mechanism, the synergistic promotion of CO2RR performance via reforming electrocatalytic interface and reactor. Finally, we will give the outlook of future research needs and customize impartial recommendations for CO2RR to promote its healthy development.

Rational design of electrocatalytic CO2 reduction for zero-carbon network

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ACS Fall 2022

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