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Processing and functionalization of conductive substoichiometric TiO2 catalyst supports for PEM fuel cell applications

Published online by Cambridge University Press:  17 October 2012

Richard Phillips ,
Alexander O’Toole ,
Xiaoli He ,
Robin Hansen ,
Robert Geer  and
Eric Eisenbraun
Richard Phillips*
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
Alexander O’Toole
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
Xiaoli He
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
Robin Hansen
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
Robert Geer
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
Eric Eisenbraun
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany–State University of New York, Albany, New York 12203
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The development of substoichiometric TiO2-based nanostructured materials with high aspect ratios for future proton exchange membrane fuel cells is investigated. Nanostructures were manufactured using atomic layer deposition of TiO2 over both anodic aluminum oxide templates and silicon nanowires. It was observed in this work that nanostructures with aspect ratios of 100:1 can be fabricated using both methods. The conductivity of TiO2 films was enhanced following a postdeposition reducing anneal (at 450 °C in H2). Liquid phase-deposited Pt and plasma-enhanced atomic layer deposition of Pt were both found to be appropriate suited for metallization of TiO2 structures.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 3: Focus Issue: Titanium Dioxide Nanomaterials , 14 February 2013 , pp. 461 - 467
Copyright
Copyright © Materials Research Society 2012

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