uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Temperature and concentration dependence of hydrogen diffusion in vanadium measured by optical transmission
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Hydrogen diffusion is investigated in a 50 nm film of vanadium and a vanadium superlattice. Diffusion constants for three different temperature and pressure pairs are determined for the 50 nm film. The diffusion constants for the temperature and pressure pairs are determined to be 4.5 $\pm$ 0.1 $\cdot 10^{-5} \text{ cm}^{-2}$ at 463 K and 0.05 H/V, 5.6 $\pm$ 0.1 $\cdot 10^{-5} \text{ cm}^{-2}$ at 463 K and 0.12 H/V and 8.0 $\pm$ 0.2 $\cdot 10^{-5} \text{ cm}^{-2}$ at 493 K and 0.05 H/V.

The temperature and concentration dependence of the diffusion constants are determined. A concentration dependence of the diffusion constant is found with a higher rate of diffusion for a higher hydrogen concentration. The activation energy of chemical diffusion is determined to be 0.38 $\pm$ 0.03 eV.

Place, publisher, year, edition, pages
2014. , 25 p.
Series
FYSAST, FYSKAND1027
Keyword [en]
Hydrogen diffusion, Vanadium, Metal hydride, Hydrogen storage, Hydrogen economy
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-239306DOI: 25OAI: oai:DiVA.org:uu-239306DiVA: diva2:774341
Educational program
Bachelor Programme in Physics
Supervisors
Examiners
Available from: 2015-02-20 Created: 2014-12-22 Last updated: 2015-02-20Bibliographically approved

Open Access in DiVA

Temperature and concentration dependence of hydrogen diffusion in vanadium measured by optical transmission(1247 kB)301 downloads
File information
File name FULLTEXT01.pdfFile size 1247 kBChecksum SHA-512
adfe6640706619c55a12628a36c8640e402a6c85661e18fe9d20afe540837af9cc3fe65350f48ff8a1b9117d9721472a60c2a99e371190bf9da9b1de5a87d9e0
Type fulltextMimetype application/pdf

Other links

Publisher's full text
By organisation
Materials Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 301 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 457 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf