CO <sub>2</sub> electrolysis to multicarbon products at activities greater than 1 A cm <sup>−2</sup>
F. Pelayo Garcı́a de Arquer, Cao‐Thang Dinh, Adnan Ozden, Joshua Wicks, Christopher McCallum, Ahmad R. Kirmani, Dae‐Hyun Nam, Christine M. Gabardo, Ali Seifitokaldani, Xue Wang, Yuguang Li, Fengwang Li, Jonathan P. Edwards, Lee J. Richter, Steven J. Thorpe, David Sinton, Edward H. Sargent
Abstract
Graceful choreography for CO 2 and H 2 O One challenge for efficient electrochemical reduction of carbon dioxide (CO 2 ) is that the gas is hydrophobic, but many of its desirable reactions require water (H 2 O). García de Arquer et al. addressed this problem by combining a copper electrocatalyst with an ionomer assembly that intersperses sulfonate-lined paths for the H 2 O with fluorocarbon channels for the CO 2 . The electrode architecture enables production of two-carbon products such as ethylene and ethanol at current densities just over an ampere per square centimeter. Science , this issue p. 661