基于绿色电能的负碳二氧化碳电化学捕集技术OA

The declining costs of renewable energy are progressively improving the economic viability of employing electrochemical techniques for carbon dioxide capture.Electrochemical carbon capture(ECC)technology utilizes electrical energy to drive electrode reactions,enabling the selective separation of CO2.The vigorous development of ECC powered by renewable energy offers a promising alternative route to conventional carbon capture methods,overcoming limitations associated with thermally driven capture and release cycles.This approach provides a promising alternative route that is more efficient,flexible,scalable,low-energy-consuming and low-polluting for traditional carbon capture technologies.This review begins by introducing established,large-scale carbon capture technologies,such as pre-combustion capture,post-combustion capture,oxy-fuel combustion,adsorption,membrane separation and the calcium looping process.It then transitions to several rapidly developing ECC technologies,including electrochemically mediated amine regeneration(EMAR),pH-swing-mediated systems,and methods involving redox-active molecules.The pH-swing systems are further categorized into bipolar membrane electrodialysis(BMED),proton-coupled electron transfer(PCET),and membrane capacitive deionization(MCDI).For each method,the underlying principles,technological advancements,advantages,as well as current problems and challenges,are systematically elucidated.It is anticipated that with the widespread deployment of green electricity and persistent innovation in electrochemical materials,ECC technology will emerge as a highly efficient and low-carbon strategy,contributing significantly to the global goal of achieving carbon neutrality.