Oleylamine Aging of PtNi Nanoparticles Giving Enhanced Functionality for the Oxygen Reduction Reaction

  title={Oleylamine Aging of PtNi Nanoparticles Giving Enhanced Functionality for the Oxygen Reduction Reaction},
  author={Gerard Malefane Leteba and Yi-Chi Wang and Thomas J. A. Slater and Rongsheng Cai and Conor Byrne and Christopher P. Race and David R. G. Mitchell and Pieter B. J. Levecque and Neil P. Young and Stuart M. Holmes and Alex S. Walton and Angus I. Kirkland and Sarah J. Haigh and Candace I. Lang},
  journal={Nano Letters},
  pages={3989 - 3996}
We report a rapid solution-phase strategy to synthesize alloyed PtNi nanoparticles which demonstrate outstanding functionality for the oxygen reduction reaction (ORR). This one-pot coreduction colloidal synthesis results in a monodisperse population of single-crystal nanoparticles of rhombic dodecahedral morphology with Pt-enriched edges and compositions close to Pt1Ni2. We use nanoscale 3D compositional analysis to reveal for the first time that oleylamine (OAm)-aging of the rhombic… 

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