Octahedral PtNi Nanoparticle Catalysts: Exceptional Oxygen Reduction Activity by Tuning the Alloy Particle Surface Composition
Nano Letters2012Vol. 12(11), pp. 5885–5889
Citations Over TimeTop 1% of 2012 papers
Abstract
We demonstrate how shape selectivity and optimized surface composition result in exceptional oxygen reduction activity of octahedral PtNi nanoparticles (NPs). The alloy octahedra were obtained by utilizing a facile, completely surfactant-free solvothermal synthesis. We show that the choice of precursor ligands controls the shape, while the reaction time tunes the surface Pt:Ni composition. The 9.5 nm sized PtNi octahedra reached a 10-fold surface area-specific (~3.14 mA/cm(Pt)(2)) as well as an unprecedented 10-fold Pt mass based (~1.45 A/mg(Pt)) activity gain over the state-of-art Pt electrocatalyst, approaching the theoretically predicted limits.
Related Papers
- → Nitrogen-modified metal-organic framework-based carbon: An effective non-precious electrocatalyst for oxygen reduction reaction(2020)17 cited
- → A high performance non-noble metal electrocatalyst for the oxygen reduction reaction derived from a metal organic framework(2016)21 cited
- → Aims of Electrocatalysis(2015)1 cited
- Preparation and characterization of La_(0.6) Ca_(0.4) CoO_3 as bifunctional oxygen electrode electrocatalyst(2004)
- On physico-chemical aspects of electrocatalysis(1986)