skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Investigation of aligned carbon nanotubes as a novel catalytic electrodes for PEM fuel cells.

Abstract

Recent progress in synthesizing and characterizing aligned carbon nanotubes (ACNT) as the electrode catalyst material for proton exchange membrane fuel cells (PEMFC) is reported. Catalytically functionalized ACNT active towards the electrocatalytic reduction of oxygen were prepared by a chemical vapor deposition method. The electrocatalytic activities and the nanostructures of the ACNT layers were investigated by cyclic voltammetry and scanning electron microscopy. To understand the nature of the transition metal as the catalytically active site in the ACNT, we also conducted an in situ X-ray absorption spectroscopic investigation at the Advanced Photon Source at Argonne National Laboratory. The oxidation state and coordination structure of the transition metals embedded inside the nanotubes were monitored by examining the EXAFS spectra collected under different polarization potentials. We clearly observed the change in the electronic and coordinational structures during the oxygen reduction reaction.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE; USDOE Office of Science (SC)
OSTI Identifier:
944526
Report Number(s):
ANL/CMT/JA-58308
TRN: US0900540
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: ECS Transactions; Journal Volume: 5; Journal Issue: 1 ; 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; ABSORPTION; ADVANCED PHOTON SOURCE; CARBON; CATALYSTS; CHEMICAL VAPOR DEPOSITION; ELECTRODES; FUEL CELLS; NANOSTRUCTURES; NANOTUBES; OXYGEN; POLARIZATION; PROTON EXCHANGE MEMBRANE FUEL CELLS; SCANNING ELECTRON MICROSCOPY; SPECTRA; TRANSITION ELEMENTS; VALENCE

Citation Formats

Liu, D. J., Yang, J., and Gosztola, D. J.. Investigation of aligned carbon nanotubes as a novel catalytic electrodes for PEM fuel cells.. United States: N. p., 2007. Web. doi:10.1149/1.2728997.
Liu, D. J., Yang, J., & Gosztola, D. J.. Investigation of aligned carbon nanotubes as a novel catalytic electrodes for PEM fuel cells.. United States. doi:10.1149/1.2728997.
Liu, D. J., Yang, J., and Gosztola, D. J.. Mon . "Investigation of aligned carbon nanotubes as a novel catalytic electrodes for PEM fuel cells.". United States. doi:10.1149/1.2728997.
@article{osti_944526,
title = {Investigation of aligned carbon nanotubes as a novel catalytic electrodes for PEM fuel cells.},
author = {Liu, D. J. and Yang, J. and Gosztola, D. J.},
abstractNote = {Recent progress in synthesizing and characterizing aligned carbon nanotubes (ACNT) as the electrode catalyst material for proton exchange membrane fuel cells (PEMFC) is reported. Catalytically functionalized ACNT active towards the electrocatalytic reduction of oxygen were prepared by a chemical vapor deposition method. The electrocatalytic activities and the nanostructures of the ACNT layers were investigated by cyclic voltammetry and scanning electron microscopy. To understand the nature of the transition metal as the catalytically active site in the ACNT, we also conducted an in situ X-ray absorption spectroscopic investigation at the Advanced Photon Source at Argonne National Laboratory. The oxidation state and coordination structure of the transition metals embedded inside the nanotubes were monitored by examining the EXAFS spectra collected under different polarization potentials. We clearly observed the change in the electronic and coordinational structures during the oxygen reduction reaction.},
doi = {10.1149/1.2728997},
journal = {ECS Transactions},
number = 1 ; 2007,
volume = 5,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}