Nanoscale titania ceramic composite supports for PEM fuel cells

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 titaniu...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials research 2012-08, Vol.27 (15), p.2046-2054
Main Authors: Armstrong, Karen J., Elbaz, Lior, Bauer, Eve, Burrell, Anthony K., McCleskey, Thomas M., Brosha, Eric L.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Biomaterials
Carbon
Ceramics
Composite materials
Corrosion
Decomposition
Electrodes
Electrolytes
Fuel cells
Inorganic Chemistry
Materials Engineering
Materials research
Materials Science
Membranes
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Nanotechnology
Polymers
Studies
Titanium
Titanium dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2012.169