Journal of Materials Chemistry A · 2014 · 71 citations · 48 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistryNanomaterialsSolid-state ChemistryCatalytic MaterialsInorganic NanoparticlesMetal Oxide NanomaterialsNanoparticle CharacterizationNanoparticle SynthesisSupported CatalystsCatalytic NanomaterialsCatalytic NanoparticlesElectrocatalytic NanomaterialsElectrochemical MeasurementsNanoparticle CatalystsOxygen Reduction CatalystsOxygen Reduction ReactionSupported Nanocatalysts
The size effect on the electrocatalytic property of octahedral Pt–Ni alloy nanoparticles in the oxygen reduction reaction (ORR) was studied by making particles with different sizes and conducting electrochemical measurements. Octahedral Pt–Ni nanoparticles on carbon support (Pt–Ni/C) were produced using a facile and surfactant-free solid-state chemistry method. Two groups of octahedral Pt–Ni/C, including Pt3Ni/C and Pt1.5Ni/C, with particle size ranging from around 4 to 8 nm were prepared. Both the ORR activity and the stability of the two group catalysts were studied, which exhibited varying dependence over the particle size. The different relationships between the Pt–Ni size and the ORR property were investigated and attributed to alterations in the particle electronic/geometric structure and the Ni leaching behaviour.
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Electrocatalyst approaches and challenges for automotive fuel cells
Mark K. Debe · Nature · 2012 · 5.8K citations