Paramelaconite-Enriched Copper-Based Material as an Efficient and Robust Catalyst for Electrochemical Carbon Dioxide Reduction

Journal article


Publication Details

Author(s): Martić N, Reller C, Macauley C, Löffler M, Schmid B, Reinisch D, Volkova E, Maltenberger A, Rucki A, Mayrhofer K, Schmid G
Journal: Advanced Energy Materials
Publication year: 2019
ISSN: 1614-6832
eISSN: 1614-6840


Abstract

A copper-oxide-based catalyst enriched with paramelaconite (Cu4O3) is presented and investigated as an electrocatalyst for facilitating electroreduction of CO2 to ethylene and other hydrocarbons. Cu4O3 is a member of the copper-oxide family and possesses an intriguing mixed-valance nature, incorporating an equal number of Cu+ and Cu2+ ions in its crystal structure. The material is synthesized using a solvothermal synthesis route and its structure is confirmed via powder X-ray diffraction, transmission electron microscope based selected area electron diffraction, and X-ray photoelectron spectroscopy. A flow reactor equipped with a gas diffusion electrode is utilized to test a copper-based catalyst enriched with the Cu4O3 phase under CO2 reduction conditions. The Cu4O3-rich catalyst (PrC) shows a Faradaic efficiency for ethylene over 40% at 400 mA cm−2. At −0.64 versus reversible hydrogen electrode, the highest C2+/C1 product ratio of 4.8 is achieved, with C2+ Faradaic efficiency over 61%. Additionally, the catalyst exhibits a stable performance for 24 h at a constant current density of 200 mA cm−2.


FAU Authors / FAU Editors

Löffler, Mario
Lehrstuhl für Elektrokatalyse (HIERN)
Macauley, Chandra, Ph.D.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Mayrhofer, Karl Prof. Dr.
Lehrstuhl für Elektrokatalyse (HIERN)


How to cite

APA:
Martić, N., Reller, C., Macauley, C., Löffler, M., Schmid, B., Reinisch, D.,... Schmid, G. (2019). Paramelaconite-Enriched Copper-Based Material as an Efficient and Robust Catalyst for Electrochemical Carbon Dioxide Reduction. Advanced Energy Materials. https://dx.doi.org/10.1002/aenm.201901228

MLA:
Martić, Nemanja, et al. "Paramelaconite-Enriched Copper-Based Material as an Efficient and Robust Catalyst for Electrochemical Carbon Dioxide Reduction." Advanced Energy Materials (2019).

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Last updated on 2019-09-08 at 09:03