2021
DOI: 10.1002/adma.202003855
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3D‐Printable Fluoropolymer Gas Diffusion Layers for CO2 Electroreduction

Abstract: The electrosynthesis of value‐added multicarbon products from CO2 is a promising strategy to shift chemical production away from fossil fuels. Particularly important is the rational design of gas diffusion electrode (GDE) assemblies to react selectively, at scale, and at high rates. However, the understanding of the gas diffusion layer (GDL) in these assemblies is limited for the CO2 reduction reaction (CO2RR): particularly important, but incompletely understood, is how the GDL modulates product distributions … Show more

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Cited by 78 publications
(79 citation statements)
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“…Feedstock development challenges hinge on maintaining desired properties while adapting the material to conform to the engineering constraints of a particular printer and/or printing process. As examples, this may include endowing a material with UV-reactive functional groups for a stereolithography (SLA) process [8] or formulating with thixotropic additives to facilitate direct ink writing (DIW) [9]. Here, we have approached this problem by co-developing Polymers 2021, 13, 2239 2 of 15 a UV-curable silicone elastomer with the build of an SLA printer specifically designed to handle the viscous nature of reinforced silicone resin.…”
Section: Introductionmentioning
confidence: 99%
“…Feedstock development challenges hinge on maintaining desired properties while adapting the material to conform to the engineering constraints of a particular printer and/or printing process. As examples, this may include endowing a material with UV-reactive functional groups for a stereolithography (SLA) process [8] or formulating with thixotropic additives to facilitate direct ink writing (DIW) [9]. Here, we have approached this problem by co-developing Polymers 2021, 13, 2239 2 of 15 a UV-curable silicone elastomer with the build of an SLA printer specifically designed to handle the viscous nature of reinforced silicone resin.…”
Section: Introductionmentioning
confidence: 99%
“…Aiming at sustainable applications with high energy efficiency, plenty of efforts have been made on the continuous‐flow devices of ECR with low resistance of mass and electron transfer (Figure 10E). 140‐144 A universal architecture was depicted by Endrődi et al 143,144 in Figure 10D, consisting of two flow channels separated by an ion‐exchange membrane and surrounded by gas diffusion layers (GDL). This type of cell can significantly decrease the resistance between cathode and anode, and the GDL with porous structure provides high surface area for triple‐phase interaction, which can offer high current densities at several hundreds of milli‐ampere/cm −2 .…”
Section: Devicesmentioning
confidence: 99%
“…This type of cell can significantly decrease the resistance between cathode and anode, and the GDL with porous structure provides high surface area for triple‐phase interaction, which can offer high current densities at several hundreds of milli‐ampere/cm −2 . Zhang et al 144 applied 2 mol/L KCl electrolyte with a simple Cu catalyst which can exhibit 150 mA cm −2 with 80% C 2+ FE. Sargent's group using an ionomer bulk heterojunction structure of Cu catalyst to achieve as high as 1 A cm −2 of partial FE to produce multi‐carbons, which has already been at industrial levels 145 .…”
Section: Devicesmentioning
confidence: 99%
“…The electrochemical, transport, and hydrodynamic responses of the unit cells as a function of the rod radius must be determined to apply the porous electrode model. Briefly, a 3D resolved, microscopic model of the isotruss unit cell in Figure 1a is developed using the commercial CFD software package Starccm+ (Siemens), a more detailed description of the procedure can be found in the Supporting Information and from our previous work [66,67]. The intrinsic area per volume and porosity depend on the ratio of the internal rod radius to the fixed unit cell edge length, L.…”
Section: Homogenizationmentioning
confidence: 99%