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Microwave-Induced S...
Microwave-Induced Structural Ordering of Resilient Nanostructured L10-FePt Catalysts for Oxygen Reduction Reaction
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- Sandström, Robin (författare)
- Umeå universitet,Institutionen för fysik,Umea Univ, Sweden
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- Gracia-Espino, Eduardo (författare)
- Umeå universitet,Institutionen för fysik,Umea Univ, Sweden
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- Annamalai, Alagappan (författare)
- Linköpings universitet,Umeå universitet,Institutionen för fysik,Umea Univ, Sweden,Tunnfilmsfysik,Tekniska fakulteten
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- Persson, Per (författare)
- Linköping University,Thin Film Physics Division, Department of Physics, Chemistry, and Biology (IFM)
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- Persson, Ingemar (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Ekspong, Joakim (författare)
- Umeå universitet,Institutionen för fysik,Umea Univ, Sweden
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- Barzegar, Hamid Reza (författare)
- Umeå universitet,Institutionen för fysik,Umea Univ, Sweden
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- Wågberg, Thomas, 1971- (författare)
- Umeå universitet,Institutionen för fysik,Umea Univ, Sweden
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(creator_code:org_t)
- 2020-09-29
- 2020
- Engelska.
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Ingår i: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 3:10, s. 9785-9791
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Abstract
Ämnesord
Stäng
- We show how structurally ordered L10 face-centered tetragonal (fct) FePt nanoparticles are produced by a solid-state microwave-assisted synthesis method. The structural phase as well as the incorporated Fe into the nanoparticles is confirmed by X-ray diffraction and high resolution high-angle annular dark field scanning transmission electron microscopy experiments. The prepared particles exhibit a remarkable resilience toward crystallite growth at high temperatures. Directly correlated to the L10 phase, the best oxygen reduction reaction (ORR) characteristics are achieved for particles with a 1:1 Fe:Pt atomic ratio and an average size of ~2.9 nm where Pt-specific evaluation provided a high mass and specific activity of ~570 A/gPt and ~600 μA/cm2Pt respectively. Our results demonstrate that well-structured catalysts possessing activities vastly exceeding Pt/C (~210 A/gPt & ~250 μA/cm2Pt), can be synthesized through a fast and highly eco-friendly method. We note that the achieved mass activity represent a significant leap toward the theoretical maximum for fully ordered FePt nanoparticles.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Proton exchange membrane fuel cell
- platinum iron
- Oxygen reduction reaction
- microwave synthesis
- L1(0) phase
- FePt-nanoparticles
- electrocatalysts
- structural ordering
- electron microscopy
- Materials Science
- materialvetenskap
- nanomaterials
- nanomaterial
- nanopartiklar
- nanoparticles
- fasta tillståndets fysik
- Solid State Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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