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Abstract
This study investigates the impact of porous bipyridine-based films on copper electrodes for electrochemical carbon dioxide reduction (CO2RR). By varying film thickness and porosity, the researchers achieved almost a tenfold increase in ethylene formation's intrinsic current density and a significant rise in multicarbon product selectivity (from 9.7% to 61.9%). A microkinetic model suggests that thick, porous films enhance local carbon monoxide (CO) partial pressure and surface coverage, promoting C-C coupling and multicarbon product formation.
Publisher
Nature Communications
Published On
Feb 15, 2023
Authors
Siqi Zhao, Oliver Christensen, Zhaozong Sun, Hongqing Liang, Alexander Bagger, Kristian Torbensen, Pegah Nazari, Jeppe Vang Lauritsen, Steen Uttrup Pedersen, Jan Rossmeisl, Kim Daasbjerg
Tags
carbon dioxide reduction
electrochemistry
bipyridine films
copper electrodes
ethylene formation
multicarbon products
microkinetic model

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