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Cascade Electrochemical Reduction of Carbon Dioxide with Bimetallic Nanowire and Foam Electrodes
Author(s) -
Zhang Benjamin A.,
Nocera Daniel G.
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100295
Subject(s) - bimetallic strip , materials science , catalysis , electrocatalyst , carbon nanofoam , electrode , electrochemistry , copper , chemical engineering , cascade , electrochemical reduction of carbon dioxide , nanotechnology , inorganic chemistry , composite material , carbon monoxide , metallurgy , chemistry , metal , organic chemistry , engineering , porosity
Cascade electrochemical reduction of CO 2 has been investigated on nanostructured bimetallic gold‐copper and silver‐copper catalyst nanowire and foam electrode arrays. The bimetallic electrocatalysts allow for the overall carbon dioxide reduction reaction (CO 2 RR) to be performed, where CO 2 to CO conversion occurring at silver (Ag) or gold (Au) is decoupled from conversion to multicarbon species at Cu. The catalyst fabrication methods permit the catalyst orientation to be controlled and thus investigation of catalyst order on the cascade process. Segmentation of bimetallic electrodes is most versatile for nanofoam arrays. Placement of an Ag foam beneath a Cu foam, where CO produced at Ag must pass through the Cu foam, results in an enhancement in methane, ethanol, and propanol production as compared to the reverse electrocatalyst ordering.