Investigation of Phase-Pure Paramelaconite Cu4O3 as an Efficient Catalyst for CO2RR and CORR

Martić N, Sajevic U, Parada WA, Löffler M, Reller C, Macauley C, Mayrhofer KJ, Schmid G (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Advanced Sustainable Systems Wiley

Book Volume: 10

Article Number: e70564

Journal Issue: 8

DOI: 10.1002/adsu.70564

Abstract

In an effort to further sustainable production of platform chemicals, a phase-pure paramelaconite (Cu4O3) is presented and investigated as an electrocatalyst for CO2 and CO electroreduction. The paramelaconite's catalytic performance is evaluated at current densities relevant for eventual industrial application (−400 mA/cm2), by utilizing a flow cell equipped with a Cu4O3-coated gas diffusion electrode. The material exhibits promising performance at such conditions, with Faradaic efficiencies for C2+ products reaching 65% and 83% for CO2RR and CORR, respectively. Long-term operation also reveals no material-related degradation of performance for >100 h. Furthermore, lattice characterization and introduction of guest elements enable deeper insights into the binding of intermediates to the catalytically active spots as well as other parameters important for efficient C─C coupling. Utilizing these findings accordingly results in a paramelaconite-like Ag2Cu2O3 reaching Faradaic efficiency of 93% for C2+ products in CORR.

Authors with CRIS profile

Chandra Macauley Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Martić, N., Sajevic, U., Parada, W.A., Löffler, M., Reller, C., Macauley, C.,... Schmid, G. (2026). Investigation of Phase-Pure Paramelaconite Cu4O3 as an Efficient Catalyst for CO2RR and CORR. Advanced Sustainable Systems, 10(8). https://doi.org/10.1002/adsu.70564

MLA:

Martić, Nemanja, et al. "Investigation of Phase-Pure Paramelaconite Cu4O3 as an Efficient Catalyst for CO2RR and CORR." Advanced Sustainable Systems 10.8 (2026).

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