TY - JOUR
T1 - Synthesis and characterization of carbon incorporated Fe-N/carbons for methanol-tolerant oxygen reduction reaction of polymer electrolyte fuel cells
AU - Liu, Shou Heng
AU - Wu, Jyun Ren
AU - Pan, Chun Jern
AU - Hwang, Bing Joe
N1 - Funding Information:
Financial support of this work from the National Science Council, Taiwan (Contract No.: NSC99-2221-E-151-044-MY2 ) is gratefully acknowledged.
PY - 2014/3/15
Y1 - 2014/3/15
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jpowsour.2013.11.011
DO - 10.1016/j.jpowsour.2013.11.011
M3 - Article
AN - SCOPUS:84889843771
SN - 0378-7753
VL - 250
SP - 279
EP - 285
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -
