Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Sublayer Stable Fe Dopant in Porous Pd Metallene Boosts Oxygen Reduction Reaction
Ist Teil von
ACS nano, 2022-01, Vol.16 (1), p.522-532
Ort / Verlag
United States: American Chemical Society
Erscheinungsjahr
2022
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Engineering the morphology and electronic properties simultaneously of emerging metallene materials is an effective strategy for enhancing their performance as oxygen reduction reaction (ORR) electrocatalysts. Herein, a highly efficient and stable ORR electrocatalyst, Fe-doped ultrathin porous Pd metallene (Fe–Pd UPM) composed of a few layers of 2D atomic metallene layers, was synthesized using a simple one pot wet-chemical method and characterized. Fe–Pd UPM was measured to have enhanced ORR activity compared to undoped Pd metallene. Fe–Pd UPM exhibits a mass activity of 0.736 A mgPd –1 with a loss of mass activity of only 5.1% after 10 000 cycles at 0.9 V versus the reversible hydrogen electrode (vs RHE) in 0.1 M KOH solution. Density functional theory (DFT) calculations reveal that the stable Fe dopant in the inner atomic layers of Fe–Pd UPM delivers a much smaller overpotential during O* hydrogenation into OH*. The morphology, porous structure, and Fe doping were verified to have enhanced ORR activity. We believe that the rational design of metallene materials with porous structures and interlayer doping is promising for the development of efficient and stable electrocatalysts.
Sprache
Englisch
Identifikatoren
ISSN: 1936-0851
eISSN: 1936-086X
DOI: 10.1021/acsnano.1c07574
Titel-ID: cdi_proquest_miscellaneous_2613291797
Format
–
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von bX