H2 PRODUCTION AND FUEL CELLS.

Wang, X. ; Rodriguez, J. A.

Brookhaven National Laboratory

关键词: Hydrocarbons;    Oxidation;    Oxygen;    Electrodes;    Oxides;   

DOI  :  10.2172/893011
RP-ID  :  BNL--76860-2006-BC
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  893011

美国|英语

来源: UNT Digital Library

【 摘 要 】

Oxide nanosystems play a key role as components of catalysts used for the production of H{sub 2} via the steam reforming or the partial oxidation of hydrocarbons, and for the water-gas shift reaction. The behavior seen for Cu-ceria and Au-ceria WGS catalysts indicates that the oxide is much more than a simple support. The special chemical properties of the oxide nanoparticles (defect rich, high mobility of oxygen) favor interactions with the reactants or other catalyst components. More in-situ characterization and mechanistic studies are necessary for the optimization of these nanocatalysts. The use of oxide nanomaterials for the fabrication of PEMFCs and SOFCs can lead to devices with a high practical impact. One objective is to build electrodes with low cost conducting oxide nanoarrays. The electron and oxygen-ion conducting capabilities of many oxides improve when going from the bulk to the nanoscale. Furthermore, one can get a more homogeneous surface morphology and an increase of the effective reaction area. Much more fundamental and practical research needs to be done in this area.