Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods
Numerous catalysts have been reported with enhanced performance, e.g. longer lifetime and improved selectivity, for the electrochemical CO _2 reduction reaction (CO _2 RR). Respectively little is, however, known about the influence of the electrode structuring and pre-treatment on this reaction for...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
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| Series: | JPhys Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7655/acb8db |
| _version_ | 1797829842939412480 |
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| author | Theresa Jaster Simon Albers Armin Leonhard Mena-Alexander Kräenbring Heiko Lohmann Barbara Zeidler-Fandrich Fatih Özcan Doris Segets Ulf-Peter Apfel |
| author_facet | Theresa Jaster Simon Albers Armin Leonhard Mena-Alexander Kräenbring Heiko Lohmann Barbara Zeidler-Fandrich Fatih Özcan Doris Segets Ulf-Peter Apfel |
| author_sort | Theresa Jaster |
| collection | DOAJ |
| description | Numerous catalysts have been reported with enhanced performance, e.g. longer lifetime and improved selectivity, for the electrochemical CO _2 reduction reaction (CO _2 RR). Respectively little is, however, known about the influence of the electrode structuring and pre-treatment on this reaction for catalytic layers. Thus, we herein report on the modification of the catalyst environment of a Cu-ZnO-carbon black catalyst by variation of the ink composition and subsequent electrode treatment before performing CO _2 RR. We furthermore provide insight into the impact of different solvents, ionomer, and additives like pore forming agents used for the ink preparation as well as post-treatment steps in terms of pressing and sintering of the generated electrodes on the CO _2 RR performance. Although using the same catalyst for all electrodes, remarkable differences in hydrophobicity, surface morphology, and electrochemical performance with respect to stability and product distribution were observed. Our study reveals the critical role of the catalytic layer assembly aside from using proper catalysts. We furthermore show that the parasitic hydrogen formation and flooding behavior can be lowered and C _2+ product formation can be enhanced when operating in optimized gas diffusion electrodes. |
| first_indexed | 2024-04-09T13:26:31Z |
| format | Article |
| id | doaj.art-8aa8ef5ba8e640eabda5a0e0fb9916c5 |
| institution | Directory Open Access Journal |
| issn | 2515-7655 |
| language | English |
| last_indexed | 2024-04-09T13:26:31Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Energy |
| spelling | doaj.art-8aa8ef5ba8e640eabda5a0e0fb9916c52023-05-10T08:18:39ZengIOP PublishingJPhys Energy2515-76552023-01-015202400110.1088/2515-7655/acb8dbEnhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methodsTheresa Jaster0Simon Albers1Armin Leonhard2Mena-Alexander Kräenbring3https://orcid.org/0000-0003-3314-9680Heiko Lohmann4Barbara Zeidler-Fandrich5Fatih Özcan6https://orcid.org/0000-0002-2584-7000Doris Segets7https://orcid.org/0000-0003-3102-2934Ulf-Peter Apfel8https://orcid.org/0000-0002-1577-2420Department of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, Germany; Inorganic Chemistry I, Ruhr University Bochum , Universitätsstr. 150, 44801 Bochum, GermanyDepartment of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, GermanyDepartment of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, GermanyInstitute for Energy and Materials Processes—Particle Science and Technology (EMPI-PST), University of Duisburg-Essen (UDE) , Carl-Benz-Str. 199, Duisburg 47057, GermanyDepartment of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, GermanyDepartment of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, GermanyInstitute for Energy and Materials Processes—Particle Science and Technology (EMPI-PST), University of Duisburg-Essen (UDE) , Carl-Benz-Str. 199, Duisburg 47057, GermanyInstitute for Energy and Materials Processes—Particle Science and Technology (EMPI-PST), University of Duisburg-Essen (UDE) , Carl-Benz-Str. 199, Duisburg 47057, Germany; Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen (UDE) , Carl-Benz-Straße 199, Duisburg 47057, GermanyDepartment of Energy, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, Germany; Inorganic Chemistry I, Ruhr University Bochum , Universitätsstr. 150, 44801 Bochum, GermanyNumerous catalysts have been reported with enhanced performance, e.g. longer lifetime and improved selectivity, for the electrochemical CO _2 reduction reaction (CO _2 RR). Respectively little is, however, known about the influence of the electrode structuring and pre-treatment on this reaction for catalytic layers. Thus, we herein report on the modification of the catalyst environment of a Cu-ZnO-carbon black catalyst by variation of the ink composition and subsequent electrode treatment before performing CO _2 RR. We furthermore provide insight into the impact of different solvents, ionomer, and additives like pore forming agents used for the ink preparation as well as post-treatment steps in terms of pressing and sintering of the generated electrodes on the CO _2 RR performance. Although using the same catalyst for all electrodes, remarkable differences in hydrophobicity, surface morphology, and electrochemical performance with respect to stability and product distribution were observed. Our study reveals the critical role of the catalytic layer assembly aside from using proper catalysts. We furthermore show that the parasitic hydrogen formation and flooding behavior can be lowered and C _2+ product formation can be enhanced when operating in optimized gas diffusion electrodes.https://doi.org/10.1088/2515-7655/acb8dbelectrochemical CO2 reductiongas diffusion electrodesink compositionCuZn catalysis |
| spellingShingle | Theresa Jaster Simon Albers Armin Leonhard Mena-Alexander Kräenbring Heiko Lohmann Barbara Zeidler-Fandrich Fatih Özcan Doris Segets Ulf-Peter Apfel Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods JPhys Energy electrochemical CO2 reduction gas diffusion electrodes ink composition CuZn catalysis |
| title | Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods |
| title_full | Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods |
| title_fullStr | Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods |
| title_full_unstemmed | Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods |
| title_short | Enhancement of CO2RR product formation on Cu-ZnO-based electrodes by varying ink formulation and post-treatment methods |
| title_sort | enhancement of co2rr product formation on cu zno based electrodes by varying ink formulation and post treatment methods |
| topic | electrochemical CO2 reduction gas diffusion electrodes ink composition CuZn catalysis |
| url | https://doi.org/10.1088/2515-7655/acb8db |
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