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Tuning the Products of CO2 Electroreduction on a Ni3Ga Catalyst Using Carbon Solid Supports

Author(s): Paris, Aubrey R; Chu, An T; B. O'Brien, Conor; Frick, Jessica J; Francis, Sonja A; et al

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Abstract: Certain alloys of nickel have recently been shown to reduce CO2 to multi-carbon products electrochemically without the need for copper. Here we show that Ni3Ga thin film electrocatalysts on carbon electrodes discriminate between CO2 reduction pathways and products based on their surface morphologies, which are controlled by catalyst-carbon support interactions. It is also observed that unsupported, bulk Ni3Ga reduces CO but not CO2. With this understanding, a tandem electrocatalyst utilizing two variants of the Ni3Ga material—one supported and one unsupported—was developed. In this two-electrode system, CO is generated from CO2 on an electrode optimized for this process, and the CO is then further reduced to methanol in the same reactor. It appears that choice of carbon support impacts the morphology of Ni3Ga during the synthesis of the catalyst, thereby influencing the electrolysis product distribution.
Publication Date: 15-May-2018
Electronic Publication Date: 15-May-2018
Citation: Paris, Aubrey R, Chu, An T, B. O'Brien, Conor, Frick, Jessica J, Francis, Sonja A, Bocarsly, Andrew B. (2018). Tuning the Products of CO2 Electroreduction on a Ni3Ga Catalyst Using Carbon Solid Supports. Journal of The Electrochemical Society, 165 (7), H385 - H392. doi:10.1149/2.0791807jes
DOI: doi:10.1149/2.0791807jes
ISSN: 0013-4651
EISSN: 1945-7111
Pages: H385 - H392
Language: en
Type of Material: Journal Article
Journal/Proceeding Title: Journal of The Electrochemical Society
Version: Final published version. This is an open access article.

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