A scalable membrane electrode assembly architecture for efficient electrochemical conversion of CO 2 to formic acid.

Autor: Hu L; Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA., Wrubel JA; Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA., Baez-Cotto CM; Materials Science Center, National Renewable Energy Laboratory, Golden, CO, USA., Intia F; Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA., Park JH; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Kropf AJ; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Kariuki N; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Huang Z; Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, CO, USA., Farghaly A; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Amichi L; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA., Saha P; Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA., Tao L; Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, CO, USA., Cullen DA; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA., Myers DJ; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Ferrandon MS; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA., Neyerlin KC; Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA. Kenneth.Neyerlin@nrel.gov.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Nov 22; Vol. 14 (1), pp. 7605. Date of Electronic Publication: 2023 Nov 22.
DOI: 10.1038/s41467-023-43409-6
Abstrakt: The electrochemical reduction of carbon dioxide to formic acid is a promising pathway to improve CO 2 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 H 2 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 <2 V and 300 mA/cm 2 in a 25 cm 2 cell. More critically, a 55-hour stability test at 200 mA/cm 2 shows stable Faradaic efficiency and cell voltage. Technoeconomic analysis is utilized to illustrate a path towards achieving cost parity with current formic acid production methods.
(© 2023. The Author(s).)
Databáze: MEDLINE
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