Enhanced hydrogen desorption property of MgH2 with the addition of cerium fluorides

Huai Jun Lin, Junko Matsuda, Haiwen Li, Min Zhu, Etsuo Akiba

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Abstract Hydrogen desorption property of MgH2 doped with cerium fluorides with different valences prepared using ball milling has been studied. CeF4 is catalytically active for hydrogen desorption of MgH2. Hydrogen desorption temperature and apparent activation energy of MgH2 are significantly reduced with dopant of 2 mol% of CeF4, which might be attributed to the formation of a new Ce-F-Mg specie at the CeF4/MgH2 interface and the easy electron transfer induced from the high valence Ce-cation. The apparent activation energy of hydrogen desorption of MgH2 is reduced from ∼160 kJ/mol to ∼110 kJ/mol with the dopant of CeF4.

Original languageEnglish
Article number32835
Pages (from-to)S392-S396
JournalJournal of Alloys and Compounds
Volume645
Issue numberS1
DOIs
Publication statusPublished - Aug 11 2015

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Cerium
Hydrogen
Desorption
Activation energy
Doping (additives)
Ball milling
Cations
Positive ions
cerium fluoride
Electrons
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Enhanced hydrogen desorption property of MgH2 with the addition of cerium fluorides. / Lin, Huai Jun; Matsuda, Junko; Li, Haiwen; Zhu, Min; Akiba, Etsuo.

In: Journal of Alloys and Compounds, Vol. 645, No. S1, 32835, 11.08.2015, p. S392-S396.

Research output: Contribution to journalArticle

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AU - Akiba, Etsuo

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AB - Abstract Hydrogen desorption property of MgH2 doped with cerium fluorides with different valences prepared using ball milling has been studied. CeF4 is catalytically active for hydrogen desorption of MgH2. Hydrogen desorption temperature and apparent activation energy of MgH2 are significantly reduced with dopant of 2 mol% of CeF4, which might be attributed to the formation of a new Ce-F-Mg specie at the CeF4/MgH2 interface and the easy electron transfer induced from the high valence Ce-cation. The apparent activation energy of hydrogen desorption of MgH2 is reduced from ∼160 kJ/mol to ∼110 kJ/mol with the dopant of CeF4.

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