Deakin University
Browse

File(s) under permanent embargo

PdNi hollow nanoparticles for improved electrocatalytic oxygen reduction in alkaline environments

journal contribution
posted on 2013-12-11, 00:00 authored by M Wang, W Zhang, J Wang, D Wexler, S D Poynton, R C T Slade, H Liu, B Winther-Jensen, Robert KerrRobert Kerr, D Shi, J Chen
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 H2/O2 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.

History

Journal

ACS Applied Materials and Interfaces

Volume

5

Issue

23

Pagination

12708 - 12715

Publisher

American Chemical Society

Location

Washington, D.C.

ISSN

1944-8244

eISSN

1944-8252

Language

eng

Publication classification

C Journal article; C1.1 Refereed article in a scholarly journal

Copyright notice

2013, American Chemical Society