Direct electrochemical CO2 conversion using oxygen-mixed gas on a Cu network cathode and tailored anode

Akihiko Anzai, Manabu Higashi, Miho Yamauchi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Electrochemical CO2 reduction (eCO2R) by direct introduction of 60% air-containing CO2 mixed gas was demonstrated using a porous Cu network cathode formed on a hydrophobic gas diffusion layer (Cu/P-GDL). Cu/P-GDL exhibited eCO2R using the mixed gas with a remarkable faradaic efficiency of 85% for the production of C2+ chemicals, whereas a Cu cathode constructed on a conventional carbon gas diffusion layer (Cu/C-GDL) produced neither eCO2R products nor H2. Furthermore, the electrolyzer with Cu/P-GDL and optimized anode configuration achieved a partial current density of 132 mA cm−2 for C2+ chemicals even in the presence of 12% O2. Demonstration of eCO2R with impure CO2 gas would greatly expand its future applications.

Original languageEnglish
Pages (from-to)11188-11191
Number of pages4
JournalChemical Communications
Volume59
Issue number75
DOIs
Publication statusPublished - Aug 21 2023

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Catalysis
  • Ceramics and Composites
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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