Graphene-supported platinum catalyst prepared with ionomer as surfactant for anion exchange membrane fuel cells

L. Zeng, T. S. Zhao, Liang An, G. Zhao, X. H. Yan, C. Y. Jung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

In this work, we have synthesized an ionomer-coated graphene-supported platinum catalyst for anion exchange membrane fuel cells. Unlike the common surfactant stabilized colloidal method, we employ a home-made anion exchange ionomer (AEI), namely quaternary ammonia poly (2, 6-dimethyl-1, 4-phenylene oxide) (QAPPO), as the surfactant. The AEI coated on reduced graphene oxide (rGO) surfaces serves as a stabilizer to anchor the platinum precursor on rGO surfaces due to electrostatic interactions. As a result, platinum nanoparticles (Pt NPs) can be easily deposited onto rGO surfaces with a uniform distribution. The remarkable feature of the present synthesis method is that the surfactant, the coated AEI, does not need to be removed from the catalyst, but serves as hydroxide-conductive paths in the catalyst layer, leading to enhanced triple phase boundaries. It is demonstrated that the use of the catalyst obtained with the present method enables a H2/O2AEMFC to yield a peak power density of 264.8 mW cm-2at 60 °C, which is 30% higher than that produced from the same fuel cell but with the use of the catalyst synthesized by the conventional synthesis method.
Original languageEnglish
Pages (from-to)506-515
Number of pages10
JournalJournal of Power Sources
Volume275
DOIs
Publication statusPublished - 1 Feb 2015
Externally publishedYes

Keywords

  • Anion exchange ionomer
  • Electrocatalysts
  • Fuel cell
  • High distribution
  • Platinum nanoparticles

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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