Giant enhancement of hydrogen transport in rutile TiO2 at low temperatures

E. J. Spahr, L. Wen, M. Stavola, L. A. Boatner, Leonard C Feldman, N. H. Tolk, G. Lüpke

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Measurements of the O-H and O-D vibrational lifetimes show that the room-temperature hydrogen diffusion rate in rutile TiO2 can be enhanced by 9 orders of magnitude when stimulated by resonant infrared light. We find that the local oscillatory motion of the proton quickly couples to a wag-mode-assisted classical transfer process along the c channel with a jump rate of greater than 1 THz and a barrier height of 0.2 eV. This increase in proton transport rate at moderate temperatures provides new insight into hydrogen transport in solids, which could play a role in applications ranging from fuel cells to hydrogen production.

Original languageEnglish
Article number205901
JournalPhysical Review Letters
Volume104
Issue number20
DOIs
Publication statusPublished - May 21 2010

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rutile
augmentation
hydrogen
protons
hydrogen production
fuel cells
life (durability)
room temperature
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Spahr, E. J., Wen, L., Stavola, M., Boatner, L. A., Feldman, L. C., Tolk, N. H., & Lüpke, G. (2010). Giant enhancement of hydrogen transport in rutile TiO2 at low temperatures. Physical Review Letters, 104(20), [205901]. https://doi.org/10.1103/PhysRevLett.104.205901

Giant enhancement of hydrogen transport in rutile TiO2 at low temperatures. / Spahr, E. J.; Wen, L.; Stavola, M.; Boatner, L. A.; Feldman, Leonard C; Tolk, N. H.; Lüpke, G.

In: Physical Review Letters, Vol. 104, No. 20, 205901, 21.05.2010.

Research output: Contribution to journalArticle

Spahr, E. J. ; Wen, L. ; Stavola, M. ; Boatner, L. A. ; Feldman, Leonard C ; Tolk, N. H. ; Lüpke, G. / Giant enhancement of hydrogen transport in rutile TiO2 at low temperatures. In: Physical Review Letters. 2010 ; Vol. 104, No. 20.
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