NiB nanoparticles: A new nickel-based catalyst for hydrogen storage properties of MgH2

Liu, Guang; Qiu, Fangyuan; Li, Jia; Wang, Yijing; Li, Li; Yan, Chao; Jiao, Lifang; Yuan, Huatang

doi:10.1016/j.ijhydene.2012.07.106

Cited by 38 publications

(13 citation statements)

References 33 publications

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“…Owing to its high gravimetric (7.6 wt% H 2 ) density, high volumetric (110 kg m À3 ) density, low cost and abundance as well as excellent reversibility, MgH 2 has been identied as one of the most attractive material for chemical hydrogen storage. [23][24][25][26][27] However, the practical application of MgH 2 is limited by high thermal stability and sluggish sorption kinetics. 26,28 So far numerous strategies have been developed to overcome these disadvantages, a common method is to combine ball milled MgH 2 with various elements and/or alloys to prepare nanocomposites to enhance the de/hydrogenation kinetics.…”

Section: Introductionmentioning

confidence: 99%

“…26,28 So far numerous strategies have been developed to overcome these disadvantages, a common method is to combine ball milled MgH 2 with various elements and/or alloys to prepare nanocomposites to enhance the de/hydrogenation kinetics. 25,[29][30][31][32][33][34] It is well known that transition metals, carbon materials and metal-carbon composites have benecial effects on the hydrogen sorption kinetics of MgH 2 . Lillo-Ródenas et al 35 researched the effect of different carbon materials supported Ni on MgH 2 decomposition.…”

Section: Introductionmentioning

confidence: 99%

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In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

Liu

et al. 2014

Nanoscale

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We have demonstrated an extremely facile procedure for the preparation of 1D porous Ni@C nanostructures by pyrolysis of Ni-based coordination polymer nanorods. The highly aligned Ni-based polymer nanorods were prepared using nitrilotriacetic acid (NTA) as a chelating agent by a one-step solvothermal approach. The obtained precursors are demonstrated to have a well-designed 1D nanostructure and a 3D interconnected mesoporous texture. After thermal treatment, 1D porous Ni@C nanorods were obtained, which basically preserved the morphology of the precursors. In addition, the carbon in the porous Ni@C nanorods is in both crystalline and amorphous states. The as-prepared Ni@C sample displays nanorod-like morphology with about 3 μm length and about 200 nm diameter. With a large surface area of 161.4 m(2) g(-1), this novel material had a good catalytic effect on de/hydrogenation of MgH2. The desorption peak temperature of MgH2-5 wt% Ni@C composites can be lowered more than 57 °C than the pure as-milled MgH2. The MgH2-5 wt% Ni@C composite could desorb 6.4 wt% H2 within 10 min at 300 °C, in contrast, only 2.3 wt% H2 was desorbed even after 100 min for pure MgH2. In addition, an activation energy of 108 kJ mol(-1) for the as-milled MgH2-5 wt% Ni@C composites has been obtained, which exhibit an enhanced kinetics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

Liu

et al. 2014

Nanoscale

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“…Additionally, the reversibility of MgH 2 was investigated by using an easy high‐pressure (HP)‐DSC method 2c. 19 As shown in Figure 6, the peak temperature was higher under H 2 pressure than under an Ar atmosphere. The endothermic and exothermic peak represent the dehydrogenation and hydrogenation reaction of MgH 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Bimetallic NiCo Functional Graphene: An Efficient Catalyst for Hydrogen‐Storage Properties of MgH₂

Wang

Liu

et al. 2014

Chemistry An Asian Journal

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Bimetallic NiCo functional graphene (NiCo/rGO) was synthesized by a facile one-pot method. During the coreduction process, the as-synthesized ultrafine NiCo nanoparticles (NPs), with a typical size of 4-6 nm, were uniformly anchored onto the surface of reduced graphene oxide (rGO). The NiCo bimetal-supported graphene was found to be more efficient than their single metals. Synergetic catalysis of NiCo NPs and rGO was confirmed, which can significantly improve the hydrogen-storage properties of MgH2. The apparent activation energy (E(a)) of the MgH2-NiCo/rGO sample decreases to 105 kJ mol(-1), which is 40.7% lower than that of pure MgH2. More importantly, the as-prepared MgH2-NiCo/rGO sample can absorb 5.5 and 6.1 wt% hydrogen within 100 and 350 s, respectively, at 300 °C under 0.9 MPa H2 pressure. Further cyclic kinetics investigation indicates that MgH2-NiCo/rGO nanocomposites have excellent cycle stability.

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“…In order to improve the hydrogen storage properties of MgH 2 , many kinds of additives has been reported to be doped into MgH 2 , such as transitional elements (Ti, V, Nb et al) [6,7], transition metal oxides [8], borides [9], fluorides [10,11] and sulfides [12][13][14]. Barkhordarian et al [15] and Hanada et al [16] reported the remarkable improvement of hydrogen sorption kinetics by ball milling certain contents of Nb 2 O 5 and MgH 2 , and the studies of Ma et al [17,18] further certified that the Nb crystals distributed in the composites can work as the gateway to facilitate hydrogen transportation, and result in an improvement of the hydrogen storage properties of MgH 2 .…”

Section: Introductionmentioning

confidence: 99%

Improvement in hydrogen storage properties of MgH₂catalyzed with BaTiO₃additive

Wang

Zhang

Han

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The MgH 2 +20 wt. % BaTiO 3 composites is prepared by ball milling MgH 2 with 20 wt. % BaTiO 3 , and the effect of BaTiO 3 on the hydrogen storage properties of the MgH 2 is investigated. TPD (Temperature-programmed-desorption) results showed that with addition of BaTiO 3 , the onset dehydrogenation temperature of the composite is 270 o C, which is 149 º C lower than that of pure MgH 2 . And the hydrogen absorption / desorption rates of MgH 2 + 20 wt.% BaTiO 3 are 2.21 times and 2.12 times of pure MgH 2 at certain temperatures and hydrogen pressures, respectively. Furthermore, BaTiO 3 additives decreased the dehydriding activation energy of MgH 2 from 116 kJ /mol to 108 kJ /mol. BaTiO 3 plays an effective catalyst role in the hydrogenation / dehydrogenation process of MgH 2 .

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NiB nanoparticles: A new nickel-based catalyst for hydrogen storage properties of MgH2

Cited by 38 publications

References 33 publications

In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

Bimetallic NiCo Functional Graphene: An Efficient Catalyst for Hydrogen‐Storage Properties of MgH₂

Improvement in hydrogen storage properties of MgH₂catalyzed with BaTiO₃additive

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NiB nanoparticles: A new nickel-based catalyst for hydrogen storage properties of MgH2

Cited by 38 publications

References 33 publications

In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2

Bimetallic NiCo Functional Graphene: An Efficient Catalyst for Hydrogen‐Storage Properties of MgH2

Improvement in hydrogen storage properties of MgH2catalyzed with BaTiO3additive

Contact Info

Product

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Bimetallic NiCo Functional Graphene: An Efficient Catalyst for Hydrogen‐Storage Properties of MgH₂

Improvement in hydrogen storage properties of MgH₂catalyzed with BaTiO₃additive