Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 23, Pages 12708-12715Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404090n
Keywords
palladium nickel; hollow; bimetallic; oxygen reduction reaction; alkaline membrane fuel cell
Funding
- Australian Research Council Centre of Excellence for Electromaterials Science (ACES)
- ARC [DP110103909]
- Australian National Fabrication Facility (ANFF) within the UOW Electron Microscopy Centre
- UK's Engineering and Physical Sciences Research Council (EPSRC)
- Engineering and Physical Sciences Research Council [EP/H025340/1] Funding Source: researchfish
- EPSRC [EP/H025340/1] Funding Source: UKRI
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Palladium-nickel (PdNi) hollow nanoparticles were synthesized via a modified galvanic replacement method using Ni nanoparticles as sacrificial templates in an aqueous medium. X-ray diffraction and transmission electron microscopy show that the as-synthesized nanoparticles are alloyed nanostructures and have hollow interiors with an average particle size of 30 nm and shell thickness of 5 nm. Compared with the commercially available Pt/C or Pd/C catalysts, the synthesized PdNi/C has superior electrocatalytic performance towards the oxygen reduction reaction, which makes it a promising electrocatalyst for alkaline anion exchange membrane fuel cells and alkali-based air-batteries. The electrocatalyst is finally examined in a H-2/O-2 alkaline anion exchange membrane fuel cell; the results show that such electrocatalysts could work in a real fuel cell application as a more efficient catalyst than state-of-the-art commercially available Pt/C.
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