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

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...

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Bibliographic Details
Published inJournal of materials research Vol. 28; no. 3; pp. 461 - 467
Main Authors Phillips, Richard, O’Toole, Alexander, He, Xiaoli, Hansen, Robin, Geer, Robert, Eisenbraun, Eric
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 14.02.2013
Springer International Publishing
Springer Nature B.V
Subjects
Aluminum
Applied and Technical Physics
Biomaterials
Carbon
Chemical vapor deposition
Conductivity
Corrosion
Electrodes
Electrolytes
Experiments
Fuel cells
Gases
Inorganic Chemistry
Materials Engineering
Materials research
Materials Science
Nanotechnology
Nanowires
Studies
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Summary: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.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2012.324