Numerical analysis of absorbing and desorbing mechanism for the metal hydride by homogenization method

Yusuke Asakuma, Shinsuke Miyauchi, Tsuyoshi Yamamoto, Hideyuki Aoki, Takatoshi Miura

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Storage capacity and fast reaction rate are the most important properties for hydrogen storage alloys. To clarify the mechanism of the rate-controlling step, we analyzed the hydrogen diffusion coefficients of the hydride by the homogenization method, which considers the microstructure of the alloy at the microscale (0.1-10 μm) precisely. By applying nucleation and growth model, we have discussed the absorbing and desorbing mechanism of the metal hydride. Our results and analysis show that it is important for the hydriding or dehydriding reaction to consider the number of nuclei and the transfer of hydrogen atom through the α-β interface data. Estimation of the microstructure of the metal hydride by using the homogenization method is useful for the absorbing and desorbing mechanism.

Original languageEnglish
Pages (from-to)529-536
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume28
Issue number5
DOIs
Publication statusPublished - May 1 2003

Fingerprint

Homogenization method
metal hydrides
homogenizing
Hydrides
numerical analysis
Numerical analysis
Metals
Hydrogen storage alloys
Hydrogen
microstructure
Microstructure
hydrogen
microbalances
hydrides
Reaction rates
hydrogen atoms
reaction kinetics
Nucleation
diffusion coefficient
nucleation

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Numerical analysis of absorbing and desorbing mechanism for the metal hydride by homogenization method. / Asakuma, Yusuke; Miyauchi, Shinsuke; Yamamoto, Tsuyoshi; Aoki, Hideyuki; Miura, Takatoshi.

In: International Journal of Hydrogen Energy, Vol. 28, No. 5, 01.05.2003, p. 529-536.

Research output: Contribution to journalArticle

Asakuma, Yusuke ; Miyauchi, Shinsuke ; Yamamoto, Tsuyoshi ; Aoki, Hideyuki ; Miura, Takatoshi. / Numerical analysis of absorbing and desorbing mechanism for the metal hydride by homogenization method. In: International Journal of Hydrogen Energy. 2003 ; Vol. 28, No. 5. pp. 529-536.
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