Spectroscopic study of low-temperature hydrogen absorption in palladium

K. Ienaga, H. Takata, Y. Onishi, Y. Inagaki, H. Tsujii, T. Kimura, T. Kawae

Research output: Contribution to journalArticle

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Abstract

We report real-time detection of hydrogen (H) absorption in metallic palladium (Pd) nano-contacts immersed in liquid H2 using inelastic electron spectroscopy (IES). After introduction of liquid H2, the spectra exhibit the time evolution from the pure Pd to the Pd hydride, indicating that H atoms are absorbed in Pd nano-contacts even at the temperature where the thermal process is not expected. The IES time and bias voltage dependences show that H absorption develops by applying bias voltage 30 ∼ 50 mV, which can be explained by quantum tunneling. The results represent that IES is a powerful method to study the kinetics of high density H on solid surface.

Original languageEnglish
Article number021605
JournalApplied Physics Letters
Volume106
Issue number2
DOIs
Publication statusPublished - Jan 12 2015

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palladium
electron spectroscopy
hydrogen
electric potential
liquids
solid surfaces
hydrides
kinetics
atoms
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Spectroscopic study of low-temperature hydrogen absorption in palladium. / Ienaga, K.; Takata, H.; Onishi, Y.; Inagaki, Y.; Tsujii, H.; Kimura, T.; Kawae, T.

In: Applied Physics Letters, Vol. 106, No. 2, 021605, 12.01.2015.

Research output: Contribution to journalArticle

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AU - Kawae, T.

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