Effect of mass transfer and kinetics in ordered Cu-mesostructures for electrochemical CO2 reduction
Effect of mass transfer and kinetics in ordered Cu-mesostructures for electrochemical CO2 reduction
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DOI：
10.1016/j.apcatb.2018.03.071
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发表时间：
2018-09
期刊：
影响因子：
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通讯作者：
Hakhyeon Song;Mintaek Im;J. Song;Jung-Ae Lim;Beomil Kim;Youngkook Kwon;Sangwoo Ryu;Jihun Oh
中科院分区：
文献类型：
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作者：
Hakhyeon Song;Mintaek Im;J. Song;Jung-Ae Lim;Beomil Kim;Youngkook Kwon;Sangwoo Ryu;Jihun Oh
Mass transfer, kinetics, and mechanism of electrochemical CO2reduction have been explored on a model mesostructure of highly-ordered copper inverse opal (Cu-IO), which was fabricated by Cu electrodeposition in a hexagonally-closed packed polystyrene template. As the number of Cu-IO layers increases, the formation of C2products such as C2H4and C2H5OH was significantly enhanced at reduced overpotentials (∼200 mV) compared to a planar Cu electrode. At the thickest layer, we observe for the first time the formation of acetylene (C2H2), which can be generated through a kinetically slow reaction pathway and be a key descriptor in the unveiling of the Csingle bondC coupling reaction mechanism. Based on our experimental observation, a plausible reaction pathway in Cu mesostructures is rationalized.
