Abstract
Highly monodispersed platinum-based nanoalloys are the best-known catalysts for the oxygen reduction reaction. Although certainly promising, the durability and stability are among the main requirements for commercializing fuel cell electrocatalysts in practical applications. Herein, we synthesize highly stable, durable and catalytic active monodispersed PtPd nanoparticles encapsulated in a unique one particle at one cell structure by adjusting the viscosity of solvents using mesocellular foam. PtPd nanoparticles in mesocellular carbon foam exhibit an excellent electrocatalytic activity (over 4 times mass and specific activities than the commercial Pt/C catalyst). Most importantly, this nanocatalyst shows no obvious change of structure and only a 29.5% loss in electrochemically active surface area after 5000 potential sweeps between 0.6 and 1.1. V versus reversible hydrogen electrode cycles.
Original language | English |
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Pages (from-to) | 214-222 |
Number of pages | 9 |
Journal | Nano Energy |
Volume | 8 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Keywords
- Highly monodispersed nanoparticles
- Mesoporous materials
- One particle at one cell structure
- Oxygen reduction reaction
- PtPd nanoalloy
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Physical Chemistry and characterization(PC2)
Johan Wouters (Manager) & Carmela Aprile (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform