Библиографическое описание:Electrochemical Reduction of Carbon Dioxide to Formate in the Acetylene-Black Gas-Diffusion Electrode with a Tin Catalyst : научное издание / G. A. Kolyagin, O. P. Taran. - Текст : непосредственный // Russian Journal of Electrochemistry. - 2024. - Т. 60, № 7. - P. 507-512. - This study was carried out under the State Assignment for the Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of Sciences (project FWES-2021-0012). - ISSN 1023-1935. - ISSN 1608-3342, DOI 10.1134/S1023193524700149.
Аннотация:An hydrophobized gas-diffusion electrode with a tin catalyst deposited onto acetylene black A437E is tested with the aim of elucidation of its potential in intensifying the CO<sub>2</sub> electroreduction to formate in acidic and alkaline aqueous solutions. Porous electrodes with the fluoroplastic content of 40 wt %, a thickness of 0.5 mm, porosity of 60 vol %, and the tin content ≈0.7 mg/cm<sup>2</sup> of the total electrode surface are studied. It is shown that this type of electrodes can be used in electroreduction of CO<sub>2</sub> at a current density of up to 900 mA/cm<sup>2</sup>, a temperature of 25–55°C with the current efficiency from 74 to 96% with respect to formate. The 4 h electrolysis at a current density of 190 mA/cm<sup>2</sup> produces a solution with the potassium formate concentration of 1.58 M. This is accompanied by the increase in the capacitance of the electric double layer from 7 to 17 mF/cm<sup>2</sup> and the decrease in the current efficiency from 96 to 58%.
Держатель оригинала документа:Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
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