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  Mechanochemical synthesis and dehydrogenation properties of Yb(AlH4)3

Cao, Z., & Felderhoff, M. (2021). Mechanochemical synthesis and dehydrogenation properties of Yb(AlH4)3. International Journal of Hydrogen Energy, 46(52), 26437-26444. doi:10.1016/j.ijhydene.2021.05.132.

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 Creators:
Cao, Zhijie1, 2, Author           
Felderhoff, Michael2, Author           
Affiliations:
1Advanced Energy Storage Materials and Devices Laboratory, School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan, 750021, PR China, ou_persistent22              
2Research Group Felderhoff, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_3027887              

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Free keywords: Hydrogen storage; Transition metal alanate; Dehydrogenation; Mechanical milling
 Abstract: The facile synthesis of ytterbium tetrahydroaluminate Yb(AlH4)3 is conducted by a mechanochemical procedure under hydrogen atmosphere for the first time. Results show that the synthesized Yb(AlH4)3 remains as an amorphous state. The thermal decomposition of Yb(AlH4)3 goes through a four-stage pathway with several amorphous intermediate phases during the process. The first dehydrogenation step of Yb(AlH)3 presents a relatively low apparent activation energy of 99.6 kJ mol−1, and ninety percent of the hydrogen from this stage can be liberated within 20 min at 160 °C. Rehydrogenation tests above 160 °C and 14 MPa hydrogen pressure demonstrate the unsuccessful rehydrogenations of the first decomposition step due to the formation of a thermodynamically more stable compound YbHCl.

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Language(s): eng - English
 Dates: 2021-01-222021-06-112021-07-29
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.ijhydene.2021.05.132
 Degree: -

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Title: International Journal of Hydrogen Energy
  Abbreviation : Int. J. Hydrog. Energy
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 46 (52) Sequence Number: - Start / End Page: 26437 - 26444 Identifier: ISSN: 0360-3199
CoNE: https://pure.mpg.de/cone/journals/resource/954925521672