Application of Co3O4 as anode catalyst in CO2 electrolyzer cells
Kormányos A, Priamushko T, Samu GF, Samu A, Endrődi B, Cherevko S, Janáky C (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 17
Article Number: 18
Journal Issue: 1
DOI: 10.1038/s41427-025-00598-4
Abstract
Replacing Ir with anode catalyst materials that are more abundant is a long-sought objective within the CO2 electrolysis community. The chemical environment (near-neutral pH, carbonate buffer electrolyte) that inherently develops during long-term operation, however, limits the pool of applicable candidates. In this contribution, Ir was replaced with a porous Co3O4 nanosheet catalyst layer as the anode of a zero-gap CO2 electrolyzer cell. The catalyst was directly deposited on the Ti porous transport layer via hydrothermal synthesis, which allowed the precise control of the catalyst loading. Under optimal conditions (7 mg cm-2 Co3O4 loading), 300 mA cm-2 current density was reached at 3.4 V applied cell voltage. The electrolyzer cell with the Co3O4 anode was operated continuously for 50 hours at 250 mA cm-2 current density with stable cell voltage and CO2 reduction selectivity.
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How to cite
APA:
Kormányos, A., Priamushko, T., Samu, G.F., Samu, A., Endrődi, B., Cherevko, S., & Janáky, C. (2025). Application of Co3O4 as anode catalyst in CO2 electrolyzer cells. NPG Asia Materials, 17(1). https://doi.org/10.1038/s41427-025-00598-4
MLA:
Kormányos, Attila, et al. "Application of Co3O4 as anode catalyst in CO2 electrolyzer cells." NPG Asia Materials 17.1 (2025).
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