PdNi hollow nanoparticles for improved electrocatalytic oxygen reduction in alkaline environments

Meng Wang, Weimin Zhang, Jiazhao Wang, David Wexler, Simon D. Poynton, Robert C T Slade, Huakun Liu, Bjorn Winther Jensen, Robert Kerr, Dongqi Shi, Jun Chen

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

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/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.

Original languageEnglish
Pages (from-to)12708-12715
Number of pages8
JournalACS Applied Materials and Interfaces
Volume5
Issue number23
DOIs
Publication statusPublished - 2013 Dec 11
Externally publishedYes

Keywords

  • alkaline membrane fuel cell
  • bimetallic
  • hollow
  • oxygen reduction reaction
  • palladium nickel

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Dive into the research topics of 'PdNi hollow nanoparticles for improved electrocatalytic oxygen reduction in alkaline environments'. Together they form a unique fingerprint.

  • Cite this

    Wang, M., Zhang, W., Wang, J., Wexler, D., Poynton, S. D., Slade, R. C. T., Liu, H., Winther Jensen, B., Kerr, R., Shi, D., & Chen, J. (2013). PdNi hollow nanoparticles for improved electrocatalytic oxygen reduction in alkaline environments. ACS Applied Materials and Interfaces, 5(23), 12708-12715. https://doi.org/10.1021/am404090n