Synthesis and characterization of carbon incorporated Fe-N/carbons for methanol-tolerant oxygen reduction reaction of polymer electrolyte fuel cells

Shou Heng Liu, Jyun Ren Wu, Chun Jern Pan, Bing Joe Hwang

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

A simple method has been developed for synthesis of carbons incorporating FeNx electrocatalysts (FeNC/C-z) based on heat treatment of nitrogen-rich species (pentaethylenehexamine) and iron precursors (FeCl 3) on carbon blacks (Vulcan XC-72) under high temperature in a nitrogen atmosphere. These resulting catalysts have been fully characterized by various spectroscopic and analytical techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). Results obtained from the polarization curves show that FeNC/C-3.1 possesses the surpassing electrocatalytic activity and the tolerance to methanol crossover during the oxygen reduction reaction (ORR) among all the FeNC/C-z catalysts, which may be due to their higher surface Fe/C and N/C atomic ratios as well as a dominant carbon incorporated FeNx (x ≈ 4), as revealed from XPS and XAS spectroscopies.

Original languageEnglish
Pages (from-to)279-285
Number of pages7
JournalJournal of Power Sources
Volume250
DOIs
Publication statusPublished - 2014 Mar 15

All Science Journal Classification (ASJC) codes

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

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