Electrochemical Reactors for CO2 Conversion

Catalysts

Jiaxun Guo¹  Xiaojia Li¹  Roger Lin¹  Poojan Patel¹  Ali Seifitokaldani¹ 

[1] Department of Chemical Engineering, McGill University, Montréal, QC H3A0C5, Canada;

关键词: CO₂ reduction reaction;    CO₂RR;    electrolyzer;    flow cell;    H-cell;    industrial process;   

DOI  :  10.3390/catal10050473

来源: DOAJ

【 摘 要 】

Increasing risks from global warming impose an urgent need to develop technologically and economically feasible means to reduce CO₂ content in the atmosphere. Carbon capture and utilization technologies and carbon markets have been established for this purpose. Electrocatalytic CO₂ reduction reaction (CO₂RR) presents a promising solution, fulfilling carbon-neutral goals and sustainable materials production. This review aims to elaborate on various components in CO₂RR reactors and relevant industrial processing. First, major performance metrics are discussed, with requirements obtained from a techno-economic analysis. Detailed discussions then emphasize on (i) technical benefits and challenges regarding different reactor types, (ii) critical features in flow cell systems that enhance CO₂ diffusion compared to conventional H-cells, (iii) electrolyte and its effect on liquid phase electrolyzers, (iv) catalysts for feasible products (carbon monoxide, formic acid and multi-carbons) and (v) strategies on flow channel and anode design as next steps. Finally, specific perspectives on CO₂ feeds for the reactor and downstream purification techniques are annotated as part of the CO₂RR industrial processing. Overall, we focus on the component and system aspects for the design of a CO₂RR reactor, while pointing out challenges and opportunities to realize the ultimate goal of viable carbon capture and utilization technology.

【 授权许可】

Unknown