Journal
ELECTROCHEMICAL SYNTHESIS OF FUELS 2
Volume 58, Issue 2, Pages 71-80Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/05802.0071ecst
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- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006113] Funding Source: National Science Foundation
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The morphological stability of 100 nm Sn particles as the electrode for electrochemical reduction of CO2 was studied in a full electrochemical cell at room temperature and pressure. A degradation of selectivity towards CO2 reduction, accompanied by the pulverization of Sn particles was observed during long-term measurements. During the pulverization process, the size of Sn particles decreased from similar to 100 nm to similar to 3 nm in approximately 60-hour operation. The Faradaic efficiency towards the formation of formate decreased from similar to 90% to similar to 56%. On the contrary, the Faradaic efficiency for H-2 evolution increased during the measurement. The degradation of the selectivity towards CO2 reduction is primarily attributed to the decrease of the potential at the cathode.
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