Effect of ball milling time on the hydrogen storage properties of TiF3-doped LiAlH4

Liu, Shu-Sheng; Sun, Lixian; Zhang, Yao; Xu, Fen; Zhang, Jian; Chu, Hailiang; Fan, Meiqiang; Zhang, Tao; Song, Xiaoyan; Grolier, J.-P.E.

doi:10.1016/j.ijhydene.2009.07.090

Cited by 89 publications

(83 citation statements)

References 45 publications

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“…While compared with the as-received LiAlH 4 , the onset desorption temperatures for the as-milled LiAlH 4 both decrease by 21°C at the first two dehydrogenation steps, attributed to the decrease in LiAlH 4 grain size by mechanical milling. 8,23,26,29,31 After doping the NiFe 2 O 4 nanoparticles into the LiAlH 4 matrix, the dehydrogenation process for the LiAlH 4 +1 mol % NiFe 2 O 4 sample starts at 68°C. With increasing the NiFe 2 O 4 proportion to 3 mol %, the onset decomposition temperature further decreases to 61°C, which shows a 94°C decrease, compared with that of the asreceived LiAlH 4 .…”

Section: Resultsmentioning

confidence: 99%

NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties

Zhai

et al. 2013

J. Phys. Chem. C

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The effects of NiFe 2 O 4 nanoparticles addition on the dehydrogenation behavior of LiAlH 4 were investigated. The onset dehydrogenation temperature for LiAlH 4 +3 mol % NiFe 2 O 4 sample is 61°C, which decreased by 94°C compared with the as-received LiAlH 4 and released ∼7.2 wt % hydrogen when heated to 180°C. Isothermal desorption measurements show that the 3 mol % NiFe 2 O 4 -doped sample releases ∼7.0 wt % of hydrogen in 91 min at 120°C, which is 6.3 wt % higher than the as-received LiAlH 4 under the same conditions. Through calculating the apparent activation energy of the LiAlH 4 samples with and without NiFe 2 O 4 for the first two dehydrogenation stages, the E a of the LiAlH 4 +3 mol % NiFe 2 O 4 sample is 54.3 and 70.8 kJ/mol, resulting in 52.5 and 59% decrease, respectively, compared with the as-received LiAlH 4 . Analyzing the X-ray diffraction and Fourier transform infrared spectroscopy results, it is reasonable to believe that the remarkable improvement of dehydrogenation properties of NiFe 2 O 4 -doped LiAlH 4 results from the in situ formed LiFeO 2 and Al−Ni compounds, providing the active sites for nucleation and growth of the dehydrogenation products.

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Section: Resultsmentioning

confidence: 99%

NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties

Zhai

et al. 2013

J. Phys. Chem. C

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“…The Al dispersion may be improved by decomposing the more brittle alanate during milling, rather than trying to mill ductile Al. TiCl 3 is observed to be a more suitable catalyst precursor than TiF 3 , as no hexaalanate phase was identified [199,200]. Using this approach, Meggough et al [197] showed an onset decomposition temperature for LiBH 4 starting at around 290°C compared to 380°C for pure LiBH 4 .…”

Section: Reactive Hydride Compositesmentioning

confidence: 99%

Complex and liquid hydrides for energy storage

et al. 2016

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The research on complex hydrides for hydrogen storage was initiated by the discovery of Ti as a hydrogen sorption catalyst in NaAlH 4 by Boris Bogdanovic in 1996. A large number of new complex hydride materials in various forms and combinations have been synthesized and characterized, and the knowledge regarding the properties of complex hydrides and the synthesis methods has grown enormously since then. A significant portion of the research groups active in the field of complex hydrides is collaborators in the International Energy Agreement Task 32. This paper reports about the important issues in the field of complex hydride research, i.e. the synthesis of borohydrides, the thermodynamics of complex hydrides, the effects of size and confinement, the hydrogen sorption mechanism and the complex hydride composites as well as the properties of liquid complex hydrides. This paper is the result of the collaboration of several groups and is an excellent summary of the recent achievements.

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“…This is quite attractive for fuel cell application. The first step in the dehydrogenation of NbF 5 -doped LiAlH 4 was found to be exothermic (figure 2c), which was also observed when the additives changed into TiF 3 [7], Al 3 Ti [8], Ni [9], or TiC [10]. However, it is not always the case.…”

mentioning

confidence: 90%

“…Many additives have been used to lower the dehydrogenation temperature of LiAlH 4 , and most of them perform well. For example, 4 mol% TiF 3 -doped LiAlH 4 starts to decompose at 60°C and releases 5.0 wt% H 2 up to 145°C [7]. This is quite attractive for fuel cell application.…”

mentioning

confidence: 99%

Thermodynamics study of hydrogen storage materials

Song

Wang

Jiao

et al. 2012

The Journal of Chemical Thermodynamics

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Effect of ball milling time on the hydrogen storage properties of TiF3-doped LiAlH4

Cited by 89 publications

References 45 publications

NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties

NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties

Complex and liquid hydrides for energy storage

Thermodynamics study of hydrogen storage materials

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Effect of ball milling time on the hydrogen storage properties of TiF3-doped LiAlH4

Cited by 89 publications

References 45 publications

NiFe2O4 Nanoparticles Catalytic Effects of Improving LiAlH4 Dehydrogenation Properties

NiFe2O4 Nanoparticles Catalytic Effects of Improving LiAlH4 Dehydrogenation Properties

Complex and liquid hydrides for energy storage

Thermodynamics study of hydrogen storage materials

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Product

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NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties

NiFe₂O₄ Nanoparticles Catalytic Effects of Improving LiAlH₄ Dehydrogenation Properties