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  Mechanochemical synthesis and effect of various additives on the hydrogen absorption-desorption behavior of Na3AlH6

Peinecke, K., Meggouh, M., & Felderhoff, M. (2018). Mechanochemical synthesis and effect of various additives on the hydrogen absorption-desorption behavior of Na3AlH6. Journal of Materials Science, 53(19), 13742-13750. doi:10.1007/s10853-018-2279-3.

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Genre: Journal Article

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 Creators:
Peinecke, Kateryna1, Author              
Meggouh, Mariem1, Author              
Felderhoff, Michael1, Author              
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1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

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 Abstract: Sodium aluminum hydride has been extensively investigated for hydrogen storage applications whereas its intermediate decomposition compound Na3AlH6 received much less attention, despite having a lower dissociation pressure and a reasonable hydrogen storage capacity of 3.0 wt%. In this work, Na3AlH6 is synthesized through ball milling, starting from NaAlH4 and 2 NaH in the presence of TiCl3 catalyst precursor, and evaluated on its hydrogen sorption properties and cycle stability. Further addition of 8 mol% Al and 8 mol% activated carbon (AC) and their effect on both the hydrogen sorption properties and cycle stability have been investigated. In order to explore whether the introduction of the Al and AC additives would be more beneficial (in terms of hydrogen sorption behavior and cycle stability) after the Na3AlH6 synthesis or during its synthesis, pre-synthesized Na3AlH6-based measurements were also included in this work. TiCl3-catalyzed NaAlH4+2 NaH sample showed a stable reversible hydrogen storage capacity of 1.7 wt%, which was further increased to 2.1 wt% with the addition of Al-powder and activated carbon AC.

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Language(s): eng - English
 Dates: 2018-02-152018-03-282018-04-092018-10-01
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10853-018-2279-3
 Degree: -

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Title: Journal of Materials Science
  Abbreviation : JMS
Source Genre: Journal
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Publ. Info: New York, NY, USA : Springer
Pages: - Volume / Issue: 53 (19) Sequence Number: - Start / End Page: 13742 - 13750 Identifier: ISSN: 0022-2461
CoNE: https://pure.mpg.de/cone/journals/resource/954925415936_1