Chakraborty, Biswarup ; Kalra, Shweta ; Beltrán‐Suito, Rodrigo ; Das, Chittaranjan ; Hellmann, Tim ; Menezes, Prashanth W. ; Driess, Matthias (2024)
A Low‐Temperature Molecular Precursor Approach to Copper‐Based Nano‐Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction.
In: Chemistry – An Asian Journal, 2020, 15 (6)
doi: 10.26083/tuprints-00015651
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
In the urge of designing noble metal‐free and sustainable electrocatalysts for oxygen evolution reaction (OER), herein, a mineral Digenite Cu₉S₅ has been prepared from a molecular copper(I) precursor, [{(PyHS)₂CuI(PyHS)}₂](OTf)₂ (1), and utilized as an anode material in electrocatalytic OER for the first time. A hot injection of 1 yielded a pure phase and highly crystalline Cu₉S₅, which was then electrophoretically deposited (EPD) on a highly conducting nickel foam (NF) substrate. When assessed as an electrode for OER, the Cu₉S₅/NF displayed an overpotential of merely 298±3 mV at a current density of 10 mA cm⁻² in alkaline media. The overpotential recorded here supersedes the value obtained for the best reported Cu‐based as well as the benchmark precious‐metal‐based RuO₂ and IrO₂ electrocatalysts. In addition, the choronoamperometric OER indicated the superior stability of Cu₉S₅/NF, rendering its suitability as the sustainable anode material for practical feasibility. The excellent catalytic activity of Cu₉S₅ can be attributed to the formation of a crystalline CuO overlayer on the conductive Cu₉S₅ that behaves as active species to facilitate OER. This study delivers a distinct molecular precursor approach to produce highly active copper‐based catalysts that could be used as an efficient and durable OER electro(pre)catalysts relying on non‐precious metals.
| Typ des Eintrags: | Artikel | ||||
|---|---|---|---|---|---|
| Erschienen: | 2024 | ||||
| Autor(en): | Chakraborty, Biswarup ; Kalra, Shweta ; Beltrán‐Suito, Rodrigo ; Das, Chittaranjan ; Hellmann, Tim ; Menezes, Prashanth W. ; Driess, Matthias | ||||
| Art des Eintrags: | Zweitveröffentlichung | ||||
| Titel: | A Low‐Temperature Molecular Precursor Approach to Copper‐Based Nano‐Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction | ||||
| Sprache: | Englisch | ||||
| Publikationsjahr: | 9 Januar 2024 | ||||
| Ort: | Darmstadt | ||||
| Publikationsdatum der Erstveröffentlichung: | 2020 | ||||
| Ort der Erstveröffentlichung: | Weinheim | ||||
| Verlag: | Wiley-VCH | ||||
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Chemistry – An Asian Journal | ||||
| Jahrgang/Volume einer Zeitschrift: | 15 | ||||
| (Heft-)Nummer: | 6 | ||||
| DOI: | 10.26083/tuprints-00015651 | ||||
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/15651 | ||||
| Zugehörige Links: | |||||
| Herkunft: | Zweitveröffentlichung DeepGreen | ||||
| Kurzbeschreibung (Abstract): | In the urge of designing noble metal‐free and sustainable electrocatalysts for oxygen evolution reaction (OER), herein, a mineral Digenite Cu₉S₅ has been prepared from a molecular copper(I) precursor, [{(PyHS)₂CuI(PyHS)}₂](OTf)₂ (1), and utilized as an anode material in electrocatalytic OER for the first time. A hot injection of 1 yielded a pure phase and highly crystalline Cu₉S₅, which was then electrophoretically deposited (EPD) on a highly conducting nickel foam (NF) substrate. When assessed as an electrode for OER, the Cu₉S₅/NF displayed an overpotential of merely 298±3 mV at a current density of 10 mA cm⁻² in alkaline media. The overpotential recorded here supersedes the value obtained for the best reported Cu‐based as well as the benchmark precious‐metal‐based RuO₂ and IrO₂ electrocatalysts. In addition, the choronoamperometric OER indicated the superior stability of Cu₉S₅/NF, rendering its suitability as the sustainable anode material for practical feasibility. The excellent catalytic activity of Cu₉S₅ can be attributed to the formation of a crystalline CuO overlayer on the conductive Cu₉S₅ that behaves as active species to facilitate OER. This study delivers a distinct molecular precursor approach to produce highly active copper‐based catalysts that could be used as an efficient and durable OER electro(pre)catalysts relying on non‐precious metals. |
||||
| Alternatives oder übersetztes Abstract: |
|
||||
| Freie Schlagworte: | Copper sulfides, Single-source precursor, Digenite, Electrocatalytic OER, Non-noble metal catalysis | ||||
| Status: | Verlagsversion | ||||
| URN: | urn:nbn:de:tuda-tuprints-156514 | ||||
| Zusätzliche Informationen: | This article also appears in: The 2nd International Conference on Organometallics and Catalysis (ICOC-2020) |
||||
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
||||
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung |
||||
| Hinterlegungsdatum: | 09 Jan 2024 12:35 | ||||
| Letzte Änderung: | 10 Jan 2024 09:31 | ||||
| PPN: | |||||
| Export: | |||||
| Suche nach Titel in: | TUfind oder in Google | ||||
Verfügbare Versionen dieses Eintrags
- A Low‐Temperature Molecular Precursor Approach to Copper‐Based Nano‐Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction. (deposited 09 Jan 2024 12:35) [Gegenwärtig angezeigt]
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum