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Journal of Materials Research Journal of Materials Research

Article contents

Nanoscale titania ceramic composite supports for PEM fuel cells

Published online by Cambridge University Press:  07 June 2012

Karen J. Armstrong ,
Lior Elbaz ,
Eve Bauer ,
Anthony K. Burrell ,
Thomas M. McCleskey  and
Eric L. Brosha
Karen J. Armstrong
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Lior Elbaz
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Eve Bauer
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Anthony K. Burrell
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Thomas M. McCleskey
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Eric L. Brosha
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Corresponding
E-mail address:
lior.elbaz@hotmail.com
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Abstract

Titanium-based ceramic supports designed for polymer electrolyte membrane fuel cells were synthesized, and catalytic activity was explored using electrochemical analysis. Synthesis of high surface area TiO2 and TiO supports was accomplished by rapidly heating a gel of polyethyleneimine-bound titanium in a tube furnace under a forming gas atmosphere. X-ray diffraction analysis revealed anatase phase formation for the TiO2 materials and crystallite sizes of less than 10 nm in both cases. Subsequent disposition of platinum through an incipient wetness approach leads to highly dispersed crystallites of platinum, less than 6 nm each, on the conductive supports. Scanning Electron Microscope (SEM)/energy dispersive x-ray analysis results showed a highly uniform Ti and Pt distribution on the surface of both materials. The supports without platinum are highly stable to acidic aqueous conditions and show no signs of oxygen reduction reactivity (ORR). However, once the 20 wt% platinum is added to the material, ORR activity comparable to XC-72-based materials is observed.

Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 15: Focus Issue: Advanced Materials for Fuel Cells , 14 August 2012 , pp. 2046 - 2054
Copyright
Copyright © Materials Research Society 2012

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