The role of ionomers in the electrolyte management of zero-gap MEA-based CO2 electrolysers: A Fumion vs. Nafion comparison DOI Creative Commons
Menglong Liu, Huifang Hu, Ying Kong

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 335, P. 122885 - 122885

Published: May 16, 2023

We study the role of binders (ionomers) in determining life-span gas diffusion electrodes (GDEs) used for high throughput CO2-to-CO electrolysis. compare two typical ionomer materials (Nafion and Fumion, both are widely preparation Ag nanoparticles-based catalyst inks) to show that when zero-gap membrane/electrode assemblies, Fumion-containing inks superior Nafion-based ones can uphold a very CO-selectivity electrochemical CO2 reduction reaction longer time. This is due ability Fumion containing suppress precipitation inside GDE structure. As Fumion-fixed GDEs significantly less hydrophobic than Nafion-fixed ones, our results contradict accepted opinion it their non-wettability what mostly protects CO2-reducing from flooding. In turn, we argue more important maintain efficient electrolyte drainage pathways structure, explain superiority on this basis.

Language: Английский

Electrochemical reduction of CO2: A roadmap to formic and acetic acid synthesis for efficient hydrogen storage DOI Creative Commons
M. Orlić, Christoph Hochenauer,

R. Nagpal

et al.

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 314, P. 118601 - 118601

Published: June 14, 2024

Language: Английский

Citations

8
In Situ Generated CO Enables High-Current CO2 Reduction to Methanol in a Molecular Catalyst Layer DOI
Seonjeong Cheon, Jing Li, Hailiang Wang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(23), P. 16348 - 16354

Published: May 28, 2024

Molecular catalysts such as cobalt phthalocyanine (CoPc) exhibit remarkable electrochemical activity in methanol production from CO2 or CO, but fast conversion with a high current density is still yet to be realized. While adopting flow cells gas diffusion electrodes common approach enhanced reaction rates, the scientific and engineering knowledge primarily centers on metal particle-based like Cu. This focus overlooks emerging heterogenized molecular distinct physical chemical properties. In this work, we observe that partial of CO reduction catalyzed by tetraamine-substituted CoPc (CoPc-NH2) supported carbon nanotubes (CNTs) remains below 30 mA cm–2, even systematic optimization structural operational parameters cell. A comparative analysis Cu catalyst reveals porous electrolyte-philic nature CoPc-NH2/CNT leaves large fraction active sites deprived under conditions. To address microenvironmental challenge, directly use reactant, leveraging its faster rate water compared CO. Effective generates situ feed catalytic sites, achieving an unprecedently for 129 cm–2. research underscores necessity new insights approaches development catalyst-based electrodes.

Language: Английский

Citations

6
The oxygen dilemma: The challenge of the anode reaction for microbial electrosynthesis from CO2 DOI Creative Commons

Maliheh Abdollahi,

Sara Al Sbei, Miriam A. Rosenbaum

et al.

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: Aug. 3, 2022

Microbial electrosynthesis (MES) from CO2 provides chemicals and fuels by driving the metabolism of microorganisms with electrons cathodes in bioelectrochemical systems. These are usually strictly anaerobic. At same time, anode reaction systems is almost exclusively water splitting through oxygen evolution (OER). This creates a dilemma for MES development engineering. Oxygen penetration to cathode has be excluded avoid toxicity efficiency losses while assuring low resistance. We show that this derives strong need identify novel reactor designs when using OER as an or fully replace alternative oxidation reactions.

Language: Английский

Citations

25
Organic molecules involved in Cu-based electrocatalysts for selective CO2 reduction to C2+ products DOI
Ping Chen, Yuming Wu, Thomas E. Rufford

et al.

Materials Today Chemistry, Journal Year: 2022, Volume and Issue: 27, P. 101328 - 101328

Published: Dec. 24, 2022

Language: Английский

Citations

24
The role of ionomers in the electrolyte management of zero-gap MEA-based CO2 electrolysers: A Fumion vs. Nafion comparison DOI Creative Commons
Menglong Liu, Huifang Hu, Ying Kong

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 335, P. 122885 - 122885

Published: May 16, 2023

We study the role of binders (ionomers) in determining life-span gas diffusion electrodes (GDEs) used for high throughput CO2-to-CO electrolysis. compare two typical ionomer materials (Nafion and Fumion, both are widely preparation Ag nanoparticles-based catalyst inks) to show that when zero-gap membrane/electrode assemblies, Fumion-containing inks superior Nafion-based ones can uphold a very CO-selectivity electrochemical CO2 reduction reaction longer time. This is due ability Fumion containing suppress precipitation inside GDE structure. As Fumion-fixed GDEs significantly less hydrophobic than Nafion-fixed ones, our results contradict accepted opinion it their non-wettability what mostly protects CO2-reducing from flooding. In turn, we argue more important maintain efficient electrolyte drainage pathways structure, explain superiority on this basis.

Language: Английский

Citations

16