A new approach to fuel cell electrodes : lanthanum aluminate yielding fine Pt nanoparticle exsolution for oxygen reduction reaction
Date
13/02/2024Grant ID
EP/X038963/1
EP/R023522/1
EP/T019298/1
EP/R023751/1
Keywords
Metadata
Show full item recordAbstract
Designing an electrocatalyst with low Pt content is an immediate need for essential reactions in low temperature fuel cell systems. In the present work, La0.9925Ba0.0075Al0.995Pt0.005O3 is aimed at using with low (only 0.5%) Pt doping as an electrocatalyst for oxygen reduction reaction (ORR). The low doping level renders exsolution of 1–2 nm nanoparticles with uniform dispersion upon reduction in H2/N2 at low temperatures. Pt exsolved perovskite oxides deliver significantly enhanced catalytic activity for ORR and improved stability in alkaline media. This study demonstrates that LaAlO3 with low noble metal content holds immense potential as an electrocatalyst in real fuel cell systems.
Citation
Ozkan , S , Kim , S J , Miller , D N & Irvine , J T S 2024 , ' A new approach to fuel cell electrodes : lanthanum aluminate yielding fine Pt nanoparticle exsolution for oxygen reduction reaction ' , Advanced Energy Materials , vol. Early View . https://doi.org/10.1002/aenm.202303025
Publication
Advanced Energy Materials
Status
Peer reviewed
ISSN
1614-6840Type
Journal article
Description
We acknowledge support from the Engineering and Physical Sciences Research Council (EPSRC) Critical Mass Grant EP/R023522/1, EPSRC Light element Analysis Facility Grant EP/T019298/1 and the EPRC Strategic Equipment Resource grant EP/R023751/1.Collections
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