Schuster, Jürgen ; Ukrainczyk, Neven ; Koenders, Eddie ; Stöckl, Markus (2023)
Geopolymer Based Electrodes as New Class of Material for Electrochemical CO₂ Reduction.
In: ChemElectroChem, 10 (20)
doi: 10.1002/celc.202300122
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

To achieve a successful transition to a sustainable carbon and energy management, it is essential to both reduce CO₂ emissions and develop new technologies that utilize CO₂ as a starting substrate. In this study, we demonstrate for the first‐time the functionalization of geopolymer binder (GP) with Sn for electrochemical CO₂ reduction (eCO2RR) to formate. By substituting cement with Sn‐GP, we have merged CO₂ utilisation and emission reduction. Using a simple mixing procedure, we were able to obtain a pourable mortar containing 5 vol. % Sn‐powder. After hardening, the Sn‐GP electrodes were characterized for their mechanical and CO₂ electrolysis performance. In 10 h electrolyses, formate concentrations were as high as 22.7±0.9 mmol L⁻¹ with a corresponding current efficiency of 14.0±0.5 % at a current density of 20 mA cm⁻². Our study demonstrates the successful design of GP‐electrodes as a new class of hybrid materials that connect eCO2RR and construction materials.

Typ des Eintrags:	Artikel
Erschienen:	2023
Autor(en):	Schuster, Jürgen ; Ukrainczyk, Neven ; Koenders, Eddie ; Stöckl, Markus
Art des Eintrags:	Bibliographie
Titel:	Geopolymer Based Electrodes as New Class of Material for Electrochemical CO₂ Reduction
Sprache:	Englisch
Publikationsjahr:	16 Oktober 2023
Ort:	Weinheim
Verlag:	Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe:	ChemElectroChem
Jahrgang/Volume einer Zeitschrift:	10
(Heft-)Nummer:	20
Kollation:	7 Seiten
DOI:	10.1002/celc.202300122
Zugehörige Links:	TUprints Zweitveröffentlichung
Kurzbeschreibung (Abstract):	To achieve a successful transition to a sustainable carbon and energy management, it is essential to both reduce CO₂ emissions and develop new technologies that utilize CO₂ as a starting substrate. In this study, we demonstrate for the first‐time the functionalization of geopolymer binder (GP) with Sn for electrochemical CO₂ reduction (eCO2RR) to formate. By substituting cement with Sn‐GP, we have merged CO₂ utilisation and emission reduction. Using a simple mixing procedure, we were able to obtain a pourable mortar containing 5 vol. % Sn‐powder. After hardening, the Sn‐GP electrodes were characterized for their mechanical and CO₂ electrolysis performance. In 10 h electrolyses, formate concentrations were as high as 22.7±0.9 mmol L⁻¹ with a corresponding current efficiency of 14.0±0.5 % at a current density of 20 mA cm⁻². Our study demonstrates the successful design of GP‐electrodes as a new class of hybrid materials that connect eCO2RR and construction materials.
Alternatives oder übersetztes Abstract:	Alternatives Abstract Sprache Geoploymers for CO₂ reduction: Geoploymers offer great potential for reducing CO₂ emissions in the construction sector by replacing ordinary cement. Here, we successfully functionalized a geopolymer with tin and applied the hybrid material as an electrode for CO₂ electrolysis. The results show current efficiencies of up to 14 % for formate production. Englisch
Freie Schlagworte:	electrochemical CO₂ reduction, formate, geopolymer electrode, Sn-functionalization, new electrode material
ID-Nummer:	Artikel-ID: e202300122
Sachgruppe der Dewey Dezimalklassifikatin (DDC):	600 Technik, Medizin, angewandte Wissenschaften > 624 Ingenieurbau und Umwelttechnik 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Fachbereich(e)/-gebiet(e):	13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Werkstoffe im Bauwesen
Hinterlegungsdatum:	22 Mai 2024 06:47
Letzte Änderung:	22 Mai 2024 06:47
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• Geopolymer Based Electrodes as New Class of Material for Electrochemical CO₂ Reduction. (deposited 21 Mai 2024 13:54)
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