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Hierarchical micro/nanostructured silver hollow fiber boosts electroreduction of carbon dioxide.

ABSTRACT: Efficient conversion of CO₂ to commodity chemicals by sustainable way is of great significance for achieving carbon neutrality. Although considerable progress has been made in CO₂ utilization, highly efficient CO₂ conversion with high space velocity under mild conditions remains a challenge. Here, we report a hierarchical micro/nanostructured silver hollow fiber electrode that reduces CO₂ to CO with a faradaic efficiency of 93% and a current density of 1.26 A · cm^-2 at a potential of -0.83 V vs. RHE. Exceeding 50% conversions of as high as 31,000 mL · g_cat^-1 · h^-1 CO₂ 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.

SUBMITTER: Li S

PROVIDER: S-EPMC9163090 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Hierarchical micro/nanostructured silver hollow fiber boosts electroreduction of carbon dioxide.

Li Shoujie S Chen Wei W Dong Xiao X Zhu Chang C Chen Aohui A Song Yanfang Y Li Guihua G Wei Wei W Sun Yuhan Y

Nature communications 20220602 1

Efficient conversion of CO2 to commodity chemicals by sustainable way is of great significance for achieving carbon neutrality. Although considerable progress has been made in CO2 utilization, highly efficient CO2 conversion with high space velocity under mild conditions remains a challenge. Here, we report a hierarchical micro/nanostructured silver hollow fiber electrode that reduces CO2 to CO with a faradaic efficiency of 93% and a current density of ...[more]

PMID: 35654817

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