Fabrication and Characterisation of Fuel Cell Catalyst Nanoparticles via Laser Ablation
Typ
Examensarbete för masterexamen
Program
Publicerad
2020
Författare
Strandberg, Linnéa
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
This report investigates the feasibility of using laser ablation in liquid (LAL) to
produce nanoparticles to be used as catalysts in fuel cells, with a focus on producing
Pt3Y-particles for use in proton exchange membrane fuel cells (PEMFC). Energydispersive
X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS)
measurements indicate that the yttrium was oxidised during the fabrication process,
and, thus, not forming the alloy with platinum as aimed for. Similarly, when ionic
liquids were used as the ablation liquid, much of the yttrium reacted with fluorine
present in the liquid. Taken together, the lack of metallic yttrium indicates that the
particles were formed by evaporation and condensation of atoms from the target
surface in the liquid phase rather than from ejection of droplets.
Beskrivning
Ämne/nyckelord
laser ablation in liquid , nanoparticles , proton exchange membrane fuel cells , ORR , Pt3Y , ionic liquids