Journal
JOURNAL OF POWER SOURCES
Volume 253, Issue -, Pages 276-281Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.12.063
Keywords
Carbon dioxide; Electrochemical reduction; Aqueous solution; Tin electrode; Formate
Funding
- Department of Education for the Fundamental Research Funds for the Central Universities
- Jiangsu Province for the College graduate research and innovation projects [CXLX13_086]
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The electrochemical reduction of carbon dioxide (CO2) on Sn electrode has been investigated in aqueous KHCO3 solution by cyclic voltammetry and controlled potential electrolysis. The results show that the faradaic efficiency for producing formate is affected by the electrolysis potential, the concentration and pH value of KHCO3 solution; the reason for the decrease of faradaic efficiency as the electrolysis time lasts is the oxidation of formate on the Pt anode. When the concentration of the formate in the electrolyte is less than 0.01 mol L-1, the faradaic efficiency can reach above 91%. (C) 2013 Elsevier B.V. All rights reserved.
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