Tuning the products of CO 2 electroreduction on a Ni 3 Ga catalyst using carbon solid supports

Aubrey R. Paris, An T. Chu, Conor B. O’Brien, Jessica J. Frick, Sonja Angelique Francis, Andrew Bruce Bocarsly

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Certain alloys of nickel have recently been shown to reduce CO 2 to multi-carbon products electrochemically without the need for copper. Here we show that Ni 3 Ga thin film electrocatalysts on carbon electrodes discriminate between CO 2 reduction pathways and products based on their surface morphologies, which are controlled by catalyst-carbon support interactions. It is also observed that unsupported, bulk Ni 3 Ga reduces CO but not CO 2 . With this understanding, a tandem electrocatalyst utilizing two variants of the Ni 3 Ga material—one supported and one unsupported—was developed. In this two-electrode system, CO is generated from CO 2 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 Ni 3 Ga during the synthesis of the catalyst, thereby influencing the electrolysis product distribution.

Original languageEnglish (US)
Pages (from-to)H385-H392
JournalJournal of the Electrochemical Society
Volume165
Issue number7
DOIs
StatePublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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