Nitride-Derived Copper Modified with Indium as a Selective and Highly Stable Catalyst for the Electroreduction of Carbon Dioxide
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Date
2019-08-08
Publication Type
Journal Article
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yes
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Abstract
The lack of efficient catalysts prevents the electrocatalytic reduction of carbon dioxide from contributing to the pressing target of a carbon‐neutral economy. Indium‐modified copper nitride was identified as a stable electrocatalyst selective toward CO. In2O3/Cu3N showed a Faradaic efficiency of 80 % at 0.5 V overpotential for at least 50 h, in stark contrast to the very limited stability of the benchmark In2O3/Cu2O. Microfabricated systems allowed to correlate activity with highly stable interfaces in indium‐modified copper nitride. In contrast, fast diffusion of indium resulted in rapidly evolving interfaces in the case of the system based on oxide‐derived Cu. A metastable nitrogen species observed by spectroscopic means was proposed as the underlying cause leading to the unchanging interfaces. This work reveals the stabilizing properties of nitride‐derived copper toward high‐performance multicomponent catalysts.
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published
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Journal / series
Volume
12 (15)
Pages / Article No.
3501 - 3508
Publisher
Wiley
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Subject
carbon dioxide; copper nitride; electrochemistry; interfaces; microfabrication
Organisational unit
03871 - Pérez-Ramírez, Javier / Pérez-Ramírez, Javier
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Funding
732840 - An Artificial Leaf: a photo-electro-catalytic cell from earth-abundant materials for sustainable solar production of CO2-based chemicals and fuels (EC)