Strongly Coupled Ag/Sn–SnO 2 Nanosheets Toward CO 2 Electroreduction to Pure HCOOH Solutions at Ampere-Level Current
Nano-Micro Letters(2024)
Abstract
Highlights The strongly coupled Ag/Sn–SnO 2 nanosheets (NSs) were prepared via a versatile electrochemical template strategy, and the generated electron-enriched Sn sites promote the formation of *OCHO and alleviate the energy barriers of *OCHO to *HCOOH. Ag/Sn–SnO 2 NSs afford a superior activity toward CO 2 electroreduction with current densities up to 2000 mA cm ‒2 and near-unity selectivity for formate production. Ag/Sn–SnO 2 NSs as the cathode in a membrane electrode assembly with porous solid electrolyte reactor enable the direct production of ~ 0.12 M pure HCOOH solution for 200 h.
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Key words
Electrochemical CO2 reduction,Coupled Ag/Sn–SnO2 nanosheets,Electronic structure,Porous solid electrolyte,Pure HCOOH solution
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