Hidden parameters for electrochemical carbon dioxide reduction in zero-gap electrolyzers DOI Creative Commons
Lucas Hoof, Niklas Thissen, Kevinjeorjios Pellumbi

et al.

Cell Reports Physical Science, Journal Year: 2022, Volume and Issue: 3(4), P. 100825 - 100825

Published: March 25, 2022

The electrochemical reduction of CO2 from flue gas or direct air capture to relevant syngas mixtures is a promising route toward mitigation environmental pollution and production bulk chemicals fuels. Among the different cell types, gas-fed zero-gap electrolyzers are as energy-efficient scalable devices. We herein investigate influence operational parameters related cathode water management, such orientation, humidification, compression onto CO2R. By stepwise optimization our not yet fully optimized electrolyzer, stability could be improved by factor 3 up 10 h at V 300 mA cm−2. Faradic efficiency for CO after 2 electrolysis was increased 14% over 60%. Controlling management key parameter high input leads flooding electrodes, whereas lower values decrease performance anion exchange membrane reduce catalyst wetting.

Language: Английский

Machine learning in proton exchange membrane water electrolysis — A knowledge-integrated framework DOI Creative Commons
Xia Chen, Alexander Rex, Janis Woelke

et al.

Applied Energy, Journal Year: 2024, Volume and Issue: 371, P. 123550 - 123550

Published: June 14, 2024

Language: Английский

Citations

11
Emerging Cu‐Based Tandem Catalytic Systems for CO2 Electroreduction to Multi‐Carbon Products DOI Creative Commons
Qingqing Qin, Hongli Suo, Lijia Chen

et al.

Advanced Materials Interfaces, Journal Year: 2024, Volume and Issue: 11(13)

Published: March 13, 2024

Abstract Conversion of carbon dioxide (CO 2 ) to valuable chemicals and feedstocks through electrochemical reduction holds promise for achieving neutrality mitigating global warming. C 2+ products are interest due their higher economic value. Since the CO conversion process involves multiple steps, tandem catalytic strategies commonly employed in design reaction RR) catalysts systems/reactors. Among diverse that capable reducing CO, Cu stands out more efficiently further converting products. In this review, emerging Cu‐based impact on RR performance, focusing three positional relationships summarized. It delves into integration membrane electrolyzers, utilizing catalyst‐coated substrate (CCS) (CCM) technologies. Several typical examples presented illustrate integration. Finally, challenges prospects applying development catalysts/systems, as well device‐level implementation indicated.

Language: Английский

Citations

9
On the influence of porous transport layers parameters on the performances of polymer electrolyte membrane water electrolysis cells DOI
Artem S. Pushkarev, I. V. Pushkareva,

M. A. Solovyev

et al.

Electrochimica Acta, Journal Year: 2021, Volume and Issue: 399, P. 139436 - 139436

Published: Oct. 18, 2021

Language: Английский

Citations

50
Synergistic Electrocatalytic Hydrogen Evolution in Ni/NiS Nanoparticles Wrapped in Multi-Heteroatom-Doped Reduced Graphene Oxide Nanosheets DOI
Mohamed B. Zakaria, Mohamed R. Berber, Yusuke Yamauchi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2021, Volume and Issue: 13(29), P. 34043 - 34052

Published: July 13, 2021

Hydrogen production is a key driver for sustainable and clean fuels used to generate electricity, which can be achieved through electrochemical splitting of water in alkaline solutions. However, the hydrogen evolution reaction (HER) kinetically sluggish media. Therefore, it has become imperative develop inexpensive highly efficient electrocatalysts that replace existing expensive scarce noble-metal-based catalysts. Herein, we report on rational design nonprecious heterostructured comprising conductive face-centered cubic nickel metal, sulfide (NiS) phase, reduced graphene oxide (rGO) doped with phosphorous (P), sulfur (S), nitrogen (N) one ordered heteromaterial named Ni/NiS/P,N,S–rGO. The Ni/NiS/P,N,S–rGO electrode shows best performance toward HER 1.0 M KOH media among all materials tested an overpotential 155 mV at 10.0 mA cm–2 Tafel slope 135 dec–1. comparable herein Pt/C-20% benchmark catalyst examined under same experimental conditions. chronoamperometry chronopotentiometry measurements have reflected high durability technological applications. At time, current showed robustness structure retention after long-term performance, by SEM, XRD, XPS measurements.

Language: Английский

Citations

43
Hidden parameters for electrochemical carbon dioxide reduction in zero-gap electrolyzers DOI Creative Commons
Lucas Hoof, Niklas Thissen, Kevinjeorjios Pellumbi

et al.

Cell Reports Physical Science, Journal Year: 2022, Volume and Issue: 3(4), P. 100825 - 100825

Published: March 25, 2022

The electrochemical reduction of CO2 from flue gas or direct air capture to relevant syngas mixtures is a promising route toward mitigation environmental pollution and production bulk chemicals fuels. Among the different cell types, gas-fed zero-gap electrolyzers are as energy-efficient scalable devices. We herein investigate influence operational parameters related cathode water management, such orientation, humidification, compression onto CO2R. By stepwise optimization our not yet fully optimized electrolyzer, stability could be improved by factor 3 up 10 h at V 300 mA cm−2. Faradic efficiency for CO after 2 electrolysis was increased 14% over 60%. Controlling management key parameter high input leads flooding electrodes, whereas lower values decrease performance anion exchange membrane reduce catalyst wetting.

Language: Английский

Citations

33