Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107159 - 107159
Published: April 1, 2025
Language: Английский
Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107159 - 107159
Published: April 1, 2025
Language: Английский
Electrochemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 107890 - 107890
Published: Feb. 1, 2025
Language: Английский
Citations
0Energy Materials, Journal Year: 2025, Volume and Issue: 5(6)
Published: Feb. 26, 2025
Direct ethanol fuel cells are considered indispensable and prospective energy storage devices due to their high volumetric density. Platinum (Pt) Pt-based alloys regarded as the most effective catalysts for both oxygen reduction reaction (ORR) oxidation reaction. To further enhance catalytic performance of catalyst, it is necessary improve mass activity utilization efficiency Pt. In this work, we report a strategy fabricating ordered mesostructured platinum-palladium alloy nanotubes (MPPNs) with hierarchical porosity (68%) abundant exposed active edge sites. MPPNs exhibit excellent stability ORR, approximately 7.4 times higher than that commercial Pt/C catalyst. After 20 k cycles accelerated durability test demonstrate impressive retention original activity, maintaining value 93.9%. Furthermore, they display superior reactions, about 2.4 Pt/C. 2,000 scan cycles, remains at 84.5% initial performance. Both experimental theoretical studies reveal synergistic effect neighboring (111) (100) facets on sites plays critical role in enhancing electrocatalytic selectivity, stability.
Language: Английский
Citations
0Carbon Energy, Journal Year: 2025, Volume and Issue: unknown
Published: March 7, 2025
ABSTRACT Ruthenium (Ru)‐based electrocatalysts show great promise as substitutes for platinum (Pt) the alkaline hydrogen evolution reaction (HER) because of their efficient water dissociation capabilities. Nevertheless, strong adsorption Ru–OH intermediates (Ru‐OH ad ) blocks active site, leading to unsatisfactory HER performance. In this study, we report a universal ligand‐exchange strategy synthesizing MOF‐on‐MOF‐derived FeP–CoP heterostructure‐anchored Ru single‐atom site catalyst (Ru‐FeP‐CoP/NPC). The obtained shows low overpotential (28 mV at 10 mA cm −2 and high mass activity (9.29 A mg −1 100 mV), surpassing performance commercial Pt/C by factor 46. Theoretical studies that regulating local charge distribution sites could alleviate surrounding OH − blockages, accelerating facilitating adsorption/desorption, thus enhancing activity. This work aims inspire further design highly durable with tailored electronic properties high‐purity production.
Language: Английский
Citations
0Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137413 - 137413
Published: March 1, 2025
Language: Английский
Citations
0Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107159 - 107159
Published: April 1, 2025
Language: Английский
Citations
0