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Hydrogen storage in Mg-LiBH4 composites catalyzed by FeF3

Puszkiel, Julian; Gennari, Fabiana C.; Arneodo Larochette, Pierre; Troiani, Horacio E.; Karimi, Fahim; Pistidda, Claudio; Gosalawit-Utke, Rapee; Jepsen, Julian; Jensen, Torben R. and Gundlach, Carsten LU , et al. (2014) In Journal of Power Sources 267. p.799-811
Abstract
Mg-10 mol% LiBH4 composite plus small amounts of FeF3 is investigated in the present work. The presence of LiBH4 during the milling process noticeably modifies the size and morphology of the Mg agglomerates, leading to faster hydrogenation and reaching almost the theoretical hydrogen capacity owing to enhanced hydrogen diffusion mechanism. However, the dehydrogenation of the system at low temperatures (<= 300 degrees C) is still slow. Thus, FeF3 addition is proposed to improve the dehydrogenation kinetic behavior. From experimental results, it is found that the presence of FeF3 results in an additional size reduction of the Mg agglomerates between similar to 10 and similar to 100 mu m and the formation of stable phases such as MgF2, LiF... (More)
Mg-10 mol% LiBH4 composite plus small amounts of FeF3 is investigated in the present work. The presence of LiBH4 during the milling process noticeably modifies the size and morphology of the Mg agglomerates, leading to faster hydrogenation and reaching almost the theoretical hydrogen capacity owing to enhanced hydrogen diffusion mechanism. However, the dehydrogenation of the system at low temperatures (<= 300 degrees C) is still slow. Thus, FeF3 addition is proposed to improve the dehydrogenation kinetic behavior. From experimental results, it is found that the presence of FeF3 results in an additional size reduction of the Mg agglomerates between similar to 10 and similar to 100 mu m and the formation of stable phases such as MgF2, LiF and FeB. The FeB species might have a catalytic effect upon the MgH2 decomposition. As a further result of the FeF3 addition, the Mg-10 mol%LiBH4-5 mol% FeF3 material shows improved dehydrogenation properties: reduced dehydrogenation activation energy, faster hydrogen desorption rate and reversible hydrogen capacities of about 5 wt% at 275 degrees C. (C) 2014 Elsevier B.V. All rights reserved. (Less)
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publication status
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subject
keywords
Hydrogen storage, Halides, Reaction path, Milling, Magnesium hydride, Boride
in
Journal of Power Sources
volume
267
pages
799 - 811
publisher
Elsevier
external identifiers
  • wos:000339601800096
  • scopus:84903126866
ISSN
1873-2755
DOI
10.1016/j.jpowsour.2014.05.130
language
English
LU publication?
yes
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2ce04a24-af66-4eba-b90f-56bd633eabb2 (old id 4590557)
date added to LUP
2014-09-04 09:57:27
date last changed
2017-10-22 03:30:35
@article{2ce04a24-af66-4eba-b90f-56bd633eabb2,
  abstract     = {Mg-10 mol% LiBH4 composite plus small amounts of FeF3 is investigated in the present work. The presence of LiBH4 during the milling process noticeably modifies the size and morphology of the Mg agglomerates, leading to faster hydrogenation and reaching almost the theoretical hydrogen capacity owing to enhanced hydrogen diffusion mechanism. However, the dehydrogenation of the system at low temperatures (&lt;= 300 degrees C) is still slow. Thus, FeF3 addition is proposed to improve the dehydrogenation kinetic behavior. From experimental results, it is found that the presence of FeF3 results in an additional size reduction of the Mg agglomerates between similar to 10 and similar to 100 mu m and the formation of stable phases such as MgF2, LiF and FeB. The FeB species might have a catalytic effect upon the MgH2 decomposition. As a further result of the FeF3 addition, the Mg-10 mol%LiBH4-5 mol% FeF3 material shows improved dehydrogenation properties: reduced dehydrogenation activation energy, faster hydrogen desorption rate and reversible hydrogen capacities of about 5 wt% at 275 degrees C. (C) 2014 Elsevier B.V. All rights reserved.},
  author       = {Puszkiel, Julian and Gennari, Fabiana C. and Arneodo Larochette, Pierre and Troiani, Horacio E. and Karimi, Fahim and Pistidda, Claudio and Gosalawit-Utke, Rapee and Jepsen, Julian and Jensen, Torben R. and Gundlach, Carsten and Tolkiehn, Martin and von Colbe, Jose Bellosta and Klassen, Thomas and Dornheim, Martin},
  issn         = {1873-2755},
  keyword      = {Hydrogen storage,Halides,Reaction path,Milling,Magnesium hydride,Boride},
  language     = {eng},
  pages        = {799--811},
  publisher    = {Elsevier},
  series       = {Journal of Power Sources},
  title        = {Hydrogen storage in Mg-LiBH4 composites catalyzed by FeF3},
  url          = {http://dx.doi.org/10.1016/j.jpowsour.2014.05.130},
  volume       = {267},
  year         = {2014},
}