A scalable membrane electrode assembly architecture for efficient electrochemical conversion of CO2 to formic acid

Leiming Hu, Jacob A. Wrubel, Carlos M. Baez-Cotto, Fry Intia, Jae Hyung Park, Arthur Jeremy Kropf, Nancy Kariuki, Zhe Huang, Ahmed Farghaly, Lynda Amichi, Prantik Saha, Ling Tao, David A. Cullen, Deborah J. Myers, Magali S. Ferrandon and K. C. Neyerlin ()
Additional contact information
Leiming Hu: National Renewable Energy Laboratory
Jacob A. Wrubel: National Renewable Energy Laboratory
Carlos M. Baez-Cotto: National Renewable Energy Laboratory
Fry Intia: National Renewable Energy Laboratory
Jae Hyung Park: Argonne National Laboratory
Arthur Jeremy Kropf: Argonne National Laboratory
Nancy Kariuki: Argonne National Laboratory
Zhe Huang: National Renewable Energy Laboratory
Ahmed Farghaly: Argonne National Laboratory
Lynda Amichi: Oak Ridge National Laboratory
Prantik Saha: National Renewable Energy Laboratory
Ling Tao: National Renewable Energy Laboratory
David A. Cullen: Oak Ridge National Laboratory
Deborah J. Myers: Argonne National Laboratory
Magali S. Ferrandon: Argonne National Laboratory
K. C. Neyerlin: National Renewable Energy Laboratory

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract The electrochemical reduction of carbon dioxide to formic acid is a promising pathway to improve CO2 utilization and has potential applications as a hydrogen storage medium. In this work, a zero-gap membrane electrode assembly architecture is developed for the direct electrochemical synthesis of formic acid from carbon dioxide. The key technological advancement is a perforated cation exchange membrane, which, when utilized in a forward bias bipolar membrane configuration, allows formic acid generated at the membrane interface to exit through the anode flow field at concentrations up to 0.25 M. Having no additional interlayer components between the anode and cathode this concept is positioned to leverage currently available materials and stack designs ubiquitous in fuel cell and H2 electrolysis, enabling a more rapid transition to scale and commercialization. The perforated cation exchange membrane configuration can achieve >75% Faradaic efficiency to formic acid at

Date: 2023
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DOI: 10.1038/s41467-023-43409-6

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