HEИндивидуална стипендия2023–2025

FOTOCER · Flooding-tolerant C2-selective CO2 reduction electrode based on hydrophobic Cu-W tandem electrocatalyst

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-11-15 → 2025-11-14
Финансиране от ЕС: 172 750 €
Участници: 2
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Електроди от мед и волфрам се тестват за по-ефективно превръщане на въглеродния диоксид в полезни химикали. Това помага за намаляване на разходите за материали и подобрява стабилността на процеса чрез предпазване на електродите от намокряне.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Flooding-tolerant C2-selective CO2 reduction electrode based on hydrophobic Cu-W tandem electrocatalyst

FOTOCER addressed three interconnected research questions aimed at advancing cost-effective electrocatalytic CO2 conversion: (1) investigating tungsten-based materials (W2C/W) as earth-abundant alternatives to noble metal co-catalysts for enhanced CO2 activation, (2) developing hierarchical Cu@W nanocone structures to achieve tandem catalytic effects through optimized CO* spillover and C-C coupling, and (3) engineering hydrophobic nanocone morphologies for flooding-tolerant gas diffusion electrodes enabling stable long-term operation. The project addressed critical challenges including the limited selectivity of copper catalysts, the high cost of noble metals, and electrode degradation through electrolyte flooding, with the hierarchical nanocone design simultaneously enhancing catalytic activity through increased surface area and improving hydrophobicity for stable device-level performance in CO2 reduction application.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

CO2 conversion to value-added mono/multicarbon products is an appealing area of research to achieve negative CO2 emissions while exploiting CO2 as a C-based feedstock. The CO2 reduction reaction (CO2RR) powered by renewable electricity provides a way to effectively utilize CO2. Gas diffusion electrode (GDE)-based CO2RR reactors significantly increase current density to commercially relevant levels due to thinner mass transport layers that overcome the aqueous systems diffusion constraint. Nevertheless, it is still challenging to achieve highly stable GDE, especially in high current density operation, owing to electrolyte flooding as a consequence of hydrophobicity decline. So, the GDE is the primary driver of CO2RRs viability, but improving its performance is paramount. What sets this proposal apart from previous researches is that we seek to demonstrate a compelling way to reinforce the structure of Cu-based GDEs via the formation of bimetallic structures pursuing tandem effect without using precious metals, which enhances the selectivity toward C2 products. An improvement in the performance and C2 selectivity is envisaged thanks to the formation of noble metal-free Cu-W heterostructures for the first time, giving rise to heteroatomic reaction sites between oxophilic W and Cu atoms to reduce the bonding energy of adsorbed CO. At the same time, flooding is minimized by the obtained hydrophobic surface topology. The surface topology endows high surface area with adequate hydrophobicity to the GDE to establish an electrode/electrolyte interface, which not only traps more CO2 along the hierarchical Cu-W surface as tandem active sites, but also efficiently prevents electrolyte flooding even at high rates. FOTOCER's achievements will lead to advancements in cutting-edge industrial CO2 to useful C2+ products, which are essential in achieving the EU's environmental targets at an affordable scale-up cost.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITA DEGLI STUDI DI GENOVA · GENOVAКоординаторИталия
FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA · GenovaИталия