Abstract
Structural analysis of high density H(D) absorbed Pd particles with 5 nm dispersed ZrO2 has been carried out using XAFS (X-ray Absorption Fine Structure) techniques. X-ray absorption spectra around the Pd K-absorption edge were observed and analyzed. The Pd-Pd bonding distance was enlarged by 0.08 Å during absorption of deuterium, and it completely reverted to its original state with the release of deuterium while maintaining the crystal lattice symmetry. These changes provide evidence that deuterium locates not on the surface of the Pd particle, but rather within the Pd crystal lattice. The hydrogen absorption mechanism will also be discussed.
Original language | English |
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Pages (from-to) | 1861-1864 |
Number of pages | 4 |
Journal | Solid State Ionics |
Volume | 177 |
Issue number | 19-25 SPEC. ISS. |
DOIs | |
Publication status | Published - 2006 Oct 15 |
Keywords
- Hydrogen absorption
- Nano-sized composite
- XAFS
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics