Mg-Based Hydrogen Storage Materials with Improved Hydrogen Sorption

• Oelerich Wolfgang

  GKSS Research Center Geesthacht GmbH

• Klassen Thomas

  GKSS Research Center Geesthacht GmbH

• Bormann Rüdiger

  GKSS Research Center Geesthacht GmbH

抄録

Nanocrystalline MgH₂/Me_xO_y composite powders were produced by high energy ball milling (Me_xO_y=Sc₂O₃, TiO₂, V₂O₅, Cr₂O₃, Mn₂O₃, Fe₃O₄, CuO, Al₂O₃, SiO₂). The hydrogen absorption and desorption kinetics were determined in view of a technical application. The addition of selected oxides lead to an enormous catalytic acceleration of hydrogen sorption compared to pure nanocrystalline hydrides. In absorption, the catalytic effect of TiO₂, V₂O₅, Cr₂O₃, Mn₂O₃, Fe₃O₄, and CuO is comparable. Concerning desorption, the composite material containing Fe₃O₄ shows the fastest kinetics followed by V₂O₅, Mn₂O₃, Cr₂O₃ and TiO₂. Only 0.2 mol% of the catalysts is sufficient to provide a fast sorption kinetics. Additionally, Mg absorbs hydrogen already at room temperature by the use of metal oxides as catalysts. Furthermore, it is demonstrated for the first time that MgH₂/Me_xO_y-powders release hydrogen at 200°C.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 42 (8), 1588-1592, 2001

  公益社団法人 日本金属学会

キーワード

• high energy ball milling
• nanocrystalline microstructure
• hydrogen storage
• magnesium hydride
• catalysis
• metal oxide catalyst

詳細情報

• CRID: 1390001204247217664
• NII論文ID: 10007260098
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.42.1588
• COI: 1:CAS:528:DC%2BD3MXnt1Clt7s%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 5890266
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5890266
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/42/8/42_8_1588/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可