Mechanism of enhanced hydrogen adsorption on palladium-doped nanoporous carbon fibers

Conference · Mon Jan 01 00:00:00 EST 2007

OSTI ID:932064

Contescu, Cristian I ^[1]; Gallego, Nidia C ^[1]; Wu, Xianxian ^[1]; Tekinalp, Halil ^[2]; Edie, Dan ^[2]; Thies, Mark C ^[1]; Baker, Frederick S ^[1]

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1. ORNL
2. Clemson University

Recent work at Oak Ridge National Laboratory was directed towards adsorptive storage of hydrogen in nanoporous carbon fibers in which palladium was incorporated prior to spinning and carbonization/activation of the fibers. Palladium doped carbon fibers exhibited enhanced hydrogen uptake compared to the corresponding palladium-free nanoporous carbon fibers (at room temperature and 2 MPa pressure). However, the mechanism responsible for the enhanced hydrogen uptake is not fully understood. New findings are presented in this paper in support of a mechanism that encompasses both hydrogen spillover on palladium metal sites and hydrogen physisorption on nanostructured carbon sites.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 932064
• Resource Relation: Conference: Carbon 2007 Conference, Seattle, WA, USA, 20070715, 20070720
• Country of Publication: United States
• Language: English

Related Subjects

activated carbon
hydrogen storage
spillover