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

Martić N, Reller C, Macauley C, Löffler M, Schmid B, Reinisch D, Volkova E, Maltenberger A, Rucki A, Mayrhofer K, Schmid G (2019)


Publication Type: Journal article

Publication year: 2019

Journal

Article Number: 1901228

DOI: 10.1002/aenm.201901228

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.

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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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