Projekte pro Jahr
Abstract
Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order to correlate their morphology and surface chemistry with electrochemical performance. The modified instant reduction synthesis results in well-dispersed, spherical Pd 85Ni 10Bi 5 nanoparticles on Vulcan XC72R support (Pd 85Ni 10Bi 5/C (II-III)), with sizes ranging from 3.7 ± 0.8 to 4.7 ± 0.7 nm. On the other hand, the common instant reduction synthesis method leads to significantly agglomerated nanoparticles (Pd 85Ni 10Bi 5/C (I)). EOR activity and stability of these three different carbon supported PdNiBi anode catalysts with a nominal atomic ratio of 85:10:5 were probed via cyclic voltammetry and chronoamperometry using the rotating disk electrode method. Pd 85Ni 10Bi 5/C (II) showed the highest electrocatalytic activity (150 mA⋅cm −2; 2678 mA⋅mg −1) with low onset potential (0.207 V) for EOR in alkaline medium, as compared to a commercial Pd/C and to the other synthesized ternary nanocatalysts Pd 85Ni 10Bi 5/C (I) and Pd 85Ni 10Bi 5/C (III). This new synthesis approach provides a new avenue to developing efficient, carbon supported ternary nanocatalysts for future energy conversion devices. [Figure not available: see fulltext.].
Originalsprache | englisch |
---|---|
Seiten (von - bis) | 203-214 |
Seitenumfang | 12 |
Fachzeitschrift | Electrocatalysis |
Jahrgang | 11 |
Ausgabenummer | 2 |
Frühes Online-Datum | 3 Jan. 2020 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 März 2020 |
ASJC Scopus subject areas
- Elektrochemie
Fields of Expertise
- Mobility & Production
Fingerprint
Untersuchen Sie die Forschungsthemen von „Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method“. Zusammen bilden sie einen einzigartigen Fingerprint.Projekte
- 1 Abgeschlossen
-
FWF – GODEFC - Graphenoxid basierte MEEs für Direkt-Ethanol-Brennstoffzelle
Hacker, V., Wolf, S., Roschger, M. & Samsudin, A. M.
1/01/19 → 30/06/22
Projekt: Forschungsprojekt