Spray-printing of composite gas diffusion electrodes with controllable porosity and hydrophobicity based on nanoparticles and polymeric binder
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Дата
2023
Автори
Науковий керівник
Назва журналу
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Назва тому
Видавець
Liha-Pres
Анотація
This research evaluates the effectiveness of various composite
Gas Diffusion Electrode (GDE) architectures for carbon dioxide reduction.
The study employs a flexible spray printing technique to create hydrophobic
porous structures using a blend of carbon or metal nanopowders and
a polymeric binder. The resulting porous layers serve as different electrode
layers, including Gas Diffusion Layers (GDLs), Microporous Layers (MPLs),
and catalyst supports, which can enhance the activity and hydrophobicity
of GDEs. The study finds that the increased surface roughness (porous
structures) and Polyvinylidene fluoride (PVDF) content in these porous layers
improve their hydrophobicity/flooding tolerance. The study demonstrates
that the selective production of ethylene can be sustained for over 10 hours
at a high current density of –200 mA cm–2 when porous MPL and catalyst
support layers are added. The use of hydrophobic porous structures as
electrode layers can provide a cost-effective and scalable approach to enhance
the hydrophobicity and activity of GDEs. Furthermore, the extended duration
of electrolysis using these porous layers has the potential to create more
efficient and sustainable electrocatalysts for carbon dioxide reduction.
Опис
Ключові слова
gas diffusion electrode, polyvinylidene fluoride, electrocatalyst
Бібліографічний опис
Liyong Xi. Spray-printing of composite gas diffusion electrodes with controllable porosity and hydrophobicity based on nanoparticles and polymeric binder / Liyong Xi, Puiki Leung, Yong Zuo // Композиційні матеріали : монографія за матеріалами XІІ Міжнародної науково-практичної WEB-конференції (квітень 2023 р.). – Львів – Торунь : Liha-Pres, 2023. – С. 100-107.