Dehydrogenation and rehydrogenation of a 0.62LiBH4-0.38NaBH4 mixture with nano-sized Ni

Liu, Yinzhe; Heere, Michael; Vasquez, Luis; Paterakis, Christos; Sørby, Magnus H.; Hauback, Bjørn C.; Book, D. L.

doi:10.1016/j.ijhydene.2018.04.211

Cited by 11 publications

(3 citation statements)

References 89 publications

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“…The re-hydrogenation attempts showed that the hydrogen content decreased from 5.5 wt % to 1.1 wt % and to 0.8 wt % with no evidence of a reformation of LiBH 4 . It was suggested by Liu et al [277] that this poor cyclic stability could be improved by nanoconfinement.…”

Section: Hydrogen Sorage Properties Of Eutectic Metal Borohydride Systemsmentioning

confidence: 99%

A Review of the MSCA ITN ECOSTORE—Novel Complex Metal Hydrides for Efficient and Compact Storage of Renewable Energy as Hydrogen and Electricity

et al. 2020

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Hydrogen as an energy carrier is very versatile in energy storage applications. Developments in novel, sustainable technologies towards a CO2-free society are needed and the exploration of all-solid-state batteries (ASSBs) as well as solid-state hydrogen storage applications based on metal hydrides can provide solutions for such technologies. However, there are still many technical challenges for both hydrogen storage material and ASSBs related to designing low-cost materials with low-environmental impact. The current materials considered for all-solid-state batteries should have high conductivities for Na+, Mg2+ and Ca2+, while Al3+-based compounds are often marginalised due to the lack of suitable electrode and electrolyte materials. In hydrogen storage materials, the sluggish kinetic behaviour of solid-state hydride materials is one of the key constraints that limit their practical uses. Therefore, it is necessary to overcome the kinetic issues of hydride materials before discussing and considering them on the system level. This review summarizes the achievements of the Marie Skłodowska-Curie Actions (MSCA) innovative training network (ITN) ECOSTORE, the aim of which was the investigation of different aspects of (complex) metal hydride materials. Advances in battery and hydrogen storage materials for the efficient and compact storage of renewable energy production are discussed.

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Section: Hydrogen Sorage Properties Of Eutectic Metal Borohydride Systemsmentioning

confidence: 99%

A Review of the MSCA ITN ECOSTORE—Novel Complex Metal Hydrides for Efficient and Compact Storage of Renewable Energy as Hydrogen and Electricity

et al. 2020

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“…It should be noted that the catalytic interaction of sodium borohydride with water does not require heating the reaction medium, in contrast to its thermal decomposition, which takes place at temperatures from 130 to 500 • C, even in the presence of active nanosized Ni particles [11], transition metal fluorides [12] and sodium chloride [13].…”

Section: Introductionmentioning

confidence: 99%

Solid-State NaBH4 Composites as Hydrogen Generation Material: Effect of Thermal Treatment of a Catalyst Precursor on the Hydrogen Generation Rate

et al. 2020

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Solid-state composites based on sodium borohydride (NaBH4) were studied for applications as hydrogen generation materials. Hydrates of cobalt and nickel chlorides subjected to a thermal treatment were added to the composites as catalyst precursors. Using thermal analysis and FTIR spectroscopy, it was shown that the amount of water removed increases with the increasing temperature. Herewith, the water molecules that remained in the samples were strongly bound to the metal and isolated from each other. According to the ultraviolet–visible (UV-vis) spectroscopy data, with the increasing temperature of the thermal pretreatment there took place a substitution of a portion of water molecules by chloride ions in the nearest environment of the metal. It appeared that it was the resulting weakening of the electrostatic field on metal that was mainly responsible for the formation of a more finely dispersed catalytic phase of amorphous cobalt boride in the reaction medium under the action of sodium borohydride. The smaller particles of the active components led to a faster rate of gas generation when water was added to the solid-state NaBH4 composites. This trend remained for both the cobalt and the nickel catalytic systems even when the activity was calculated per gram of the metal. Thus, for the preparation of solid-state NaBH4 composites, hydrates of cobalt and nickel chlorides with a low content of water should be used.

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“…However, the above reported nanoconfinement carriers are composed of non-metallic material that can only provide a single nanoconfinement role for LiBH 4 in general. Taking into account that transition metal elements (e.g., Ni and Co) can serve as the active catalyst in improving the hydrogen storage properties of complex hydrides owing to their high electronegativity0 (Ngene et al, 2011;Liu et al, 2018;Zhang et al, 2018), a synergistic effect of nanoconfinement and catalysis would be achieved by confining LiBH 4 in nanoporous transition metal. Based on this consideration, nanoporous Ni-based alloy was prepared by dealloying of the Mn 70 Ni 30 alloy and then used as the carrier to support LiBH 4 in this work, and a significantly improved low-temperature hydrogen storage in LiBH 4 was successfully obtained.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Low-Temperature Hydrogen Storage in Nanoporous Ni-Based Alloy Supported LiBH4

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To reveal the synergistic effect of nanoconfinement and metallic catalysis on the hydrogen storage properties of LiBH 4 , the nanoporous Ni-based alloy (np-Ni) was prepared herein by dealloying of the Mn 70 Ni 30 alloy in (NH 4) 2 SO 4 solution, and then LiBH 4 was loaded into np-Ni to construct the LiBH 4 /np-Ni hydrogen storage system using wet impregnation. It was found that dehydrogenation of the LiBH 4 /np-Ni (1:5) system starts at around 70 • C and ends before 400 • C, with ∼11.9 wt.% of hydrogen desorbed. The apparent dehydrogenation activation energy for the LiBH 4 /np-Ni (1:5) system was remarkable decreased to about 11.4 kJ/mol. After rehydrogenation at 450 • C under 8 MPa hydrogen pressure, ∼8.2 wt.% of hydrogen can be released from about 60 • C upon second dehydrogenation. These obtained results would provide an efficient strategy for improving the hydrogen storage properties of other metal borohydrides.

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Dehydrogenation and rehydrogenation of a 0.62LiBH4-0.38NaBH4 mixture with nano-sized Ni

Abstract: Dehydrogenation and rehydrogenation of a 0.62LiBH 4-0.38NaBH 4 mixture with nano-sized Ni

Cited by 11 publications

References 89 publications

A Review of the MSCA ITN ECOSTORE—Novel Complex Metal Hydrides for Efficient and Compact Storage of Renewable Energy as Hydrogen and Electricity

A Review of the MSCA ITN ECOSTORE—Novel Complex Metal Hydrides for Efficient and Compact Storage of Renewable Energy as Hydrogen and Electricity

Solid-State NaBH4 Composites as Hydrogen Generation Material: Effect of Thermal Treatment of a Catalyst Precursor on the Hydrogen Generation Rate

Enhanced Low-Temperature Hydrogen Storage in Nanoporous Ni-Based Alloy Supported LiBH4

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