Hierarchical micro/nanostructured silver hollow fiber boosts electroreduction of carbon dioxide.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35654817.
- Also identified by DOI 10.1038/s41467-022-30733-6 and PMC identifier 9163090.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Efficient conversion of CO<sub>2</sub> to commodity chemicals by sustainable way is of great significance for achieving carbon neutrality. Although considerable progress has been made in CO<sub>2</sub> utilization, highly efficient CO<sub>2</sub> conversion with high space velocity under mild conditions remains a challenge. Here, we report a hierarchical micro/nanostructured silver hollow fiber electrode that reduces CO<sub>2</sub> to CO with a faradaic efficiency of 93% and a current density of 1.26 A · cm<sup>-2</sup> at a potential of -0.83 V vs. RHE. Exceeding 50% conversions of as high as 31,000 mL · g<sub>cat</sub><sup>-1</sup> · h<sup>-1</sup> CO<sub>2</sub> are achieved at ambient temperature and pressure. Electrochemical results and time-resolved operando Raman spectra demonstrate that enhanced three-phase interface reactions and oriented mass transfers synergistically boost CO production.