Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate
The electrocatalytic reduction of CO2 to formate or formic acid represents a promising approach to mitigating CO2 emissions. Despite progress with Bi and Sn-based cathodes, there remains a demand for new electrocatalytic materials with enhanced activity for industrial-scale implementation. In a rece...
| Autores: | ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/36149 |
| Acceso en línea: | https://hdl.handle.net/10902/36149 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Bi-Sn-Sb-based nanoparticles Gas Diffusion Electrodes CO2 electroreduction Improved performance Formate |
| _version_ | 1878738117245009920 |
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| author | Díaz Sainz, Guillermo |
| author2 | Fernández Caso, Kevin Ávila Bolívar, Beatriz Montiel Leguey, Vicente Solla Gullón, José Álvarez Guerra, Manuel|||0000-0002-3546-584X Irabien Gulías, Ángel|||0000-0002-2411-4163 |
| author2_role | author author author author author author |
| author_browse | Díaz Sainz, Guillermo Fernández Caso, Kevin Irabien Gulías, Ángel|||0000-0002-2411-4163 Montiel Leguey, Vicente Solla Gullón, José Álvarez Guerra, Manuel|||0000-0002-3546-584X Ávila Bolívar, Beatriz |
| author_facet | Díaz Sainz, Guillermo Fernández Caso, Kevin Ávila Bolívar, Beatriz Montiel Leguey, Vicente Solla Gullón, José Álvarez Guerra, Manuel|||0000-0002-3546-584X Irabien Gulías, Ángel|||0000-0002-2411-4163 |
| author_role | author |
| collection | UCrea Repositorio Abierto de la Universidad de Cantabria |
| description | The electrocatalytic reduction of CO2 to formate or formic acid represents a promising approach to mitigating CO2 emissions. Despite progress with Bi and Sn-based cathodes, there remains a demand for new electrocatalytic materials with enhanced activity for industrial-scale implementation. In a recent contribution, carbon-supported Bi-Sn-Sb nanoparticles with different atomic ratios were prepared and evaluated for the electrocatalytic reduction of CO2 to formate, assessing their performance in terms of activity, selectivity, and stability under working conditions in an H-type cell. Under this electrochemical reactor configuration, the results clearly indicated that the incorporation of small amounts of Sb and Sn into Bi significantly enhanced stability without substantially affecting activity and selectivity, achieving promising results with Bi80Sn10Sb10 electrocatalysts. Here, we report the use of Bi-Sn-Sb-based Gas Diffusion Electrodes (GDEs) in a flow electrochemical reactor for the electrocatalytic reduction of CO2 to formate. The study also aims to rigorously compare the performance of Bi-Sn-Sb GDEs with that of analogous GDEs based solely on Bi or Sn. When compared to relevant references, the Bi-Sn-Sb catalyst demonstrates performance metrics that reflect comparable system efficiency to the Bi and Sn cathodes previously used by our research group, operating at current densities up to 200 mA·cm−2 and achieving formate concentrations of approximately 15 g·L−1. Furthermore, these materials exhibited technical feasibility, remaining stable throughout the 5-hour experiment with less than a 10 % decrease in concentration. This stability marks a vital first step toward the future implementation of this type of cathode in the electrochemical reduction of CO₂ to formate. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_a9dcebfdc4f408d8d7d5997f8ff7e6d7 |
| institution | Universidad de Cantabria (UC) |
| instname_str | Universidad de Cantabria (UC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:repositorio.unican.es:10902/36149 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | UCrea Repositorio Abierto de la Universidad de Cantabria |
| spelling | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate Díaz Sainz, Guillermo Fernández Caso, Kevin Ávila Bolívar, Beatriz Montiel Leguey, Vicente Solla Gullón, José Álvarez Guerra, Manuel|||0000-0002-3546-584X Irabien Gulías, Ángel|||0000-0002-2411-4163 Bi-Sn-Sb-based nanoparticles Gas Diffusion Electrodes CO2 electroreduction Improved performance Formate The electrocatalytic reduction of CO2 to formate or formic acid represents a promising approach to mitigating CO2 emissions. Despite progress with Bi and Sn-based cathodes, there remains a demand for new electrocatalytic materials with enhanced activity for industrial-scale implementation. In a recent contribution, carbon-supported Bi-Sn-Sb nanoparticles with different atomic ratios were prepared and evaluated for the electrocatalytic reduction of CO2 to formate, assessing their performance in terms of activity, selectivity, and stability under working conditions in an H-type cell. Under this electrochemical reactor configuration, the results clearly indicated that the incorporation of small amounts of Sb and Sn into Bi significantly enhanced stability without substantially affecting activity and selectivity, achieving promising results with Bi80Sn10Sb10 electrocatalysts. Here, we report the use of Bi-Sn-Sb-based Gas Diffusion Electrodes (GDEs) in a flow electrochemical reactor for the electrocatalytic reduction of CO2 to formate. The study also aims to rigorously compare the performance of Bi-Sn-Sb GDEs with that of analogous GDEs based solely on Bi or Sn. When compared to relevant references, the Bi-Sn-Sb catalyst demonstrates performance metrics that reflect comparable system efficiency to the Bi and Sn cathodes previously used by our research group, operating at current densities up to 200 mA·cm−2 and achieving formate concentrations of approximately 15 g·L−1. Furthermore, these materials exhibited technical feasibility, remaining stable throughout the 5-hour experiment with less than a 10 % decrease in concentration. This stability marks a vital first step toward the future implementation of this type of cathode in the electrochemical reduction of CO₂ to formate. The authors fully acknowledge the financial support received from the Spanish Research Agency (AEI) through projects PID2022–138491OB-C31, PID2022–138491OB-C32 (MICIU/AEI/10.13039/501100011033 and by ERDF/EU), TED2021–129810B-C21 (MCIN/AEI /10.13039/501100011033), PLEC2022–009398 (MCIN/AEI/10.13039/501100011033 and European Union Next Generation EU/PRTR) and the “Complementary Plan in the area of Energy and Renewable Hydrogen” (funded by Autonomous Community of Cantabria, Spain, and the European Union Next Generation EU/PRTR). The present work is related to CAPTUS Project. This project has received funding from the European Union’s Horizon Europe research and innovation programme under grant agreement Nº 101118265. Elsevier https://hdl.handle.net/10902/36149 |
| spellingShingle | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate Díaz Sainz, Guillermo Bi-Sn-Sb-based nanoparticles Gas Diffusion Electrodes CO2 electroreduction Improved performance Formate |
| title | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| title_full | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| title_fullStr | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| title_full_unstemmed | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| title_short | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| title_sort | Advances in the development of innovative Bi-Sn-Sb-based Gas Diffusion Electrodes for continuous CO2 electroreduction to formate |
| topic | Bi-Sn-Sb-based nanoparticles Gas Diffusion Electrodes CO2 electroreduction Improved performance Formate |
| topic_facet | Bi-Sn-Sb-based nanoparticles Gas Diffusion Electrodes CO2 electroreduction Improved performance Formate |
| url | https://hdl.handle.net/10902/36149 |