Catalytic effect of NiO/C derived from Ni-UMOFNs on the hydrogen storage performance of magnesium hydride

Hou, Quanhui; Yang, Xinglin; Zhang, Jiaqi; Yang, Weijie

doi:10.1016/j.jallcom.2021.163314

Cited by 21 publications

(10 citation statements)

References 46 publications

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“…The addition of Ni 3 Fe/BC is responsible for the modified kinetics, which could effectively reduce the intensity of the Mg–H bond and thus accelerate the dissociation of the H atom. 19 where β in the equation denotes the heating rate, T p denotes the peak temperature of hydrogen release, R denotes the gas constant, A denotes the pre-exponential, and E d denotes the apparent activation energy of dehydrogenation.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed preparation process can be found in the previous studies. 19,43 The ratio of MgH 2 and catalysts was 9 : 1, the ball-to-powder ratio was 70 : 1, and tungsten carbide balls and stainless-steel ball milling canister were employed. The samples were ground in a planetary ball mill (QM-3SP4, Nanjing) with Ar atmosphere for 5 h at a speed of 450 rpm.…”

Section: Preparation Of Mgh 2 and Catalyst Compositesmentioning

confidence: 99%

“…This journal is © The Royal Society of Chemistry 2022 reduce the intensity of the Mg-H bond and thus accelerate the dissociation of the H atom. 19 ln…”

Section: Dalton Transactions Papermentioning

confidence: 99%

“…17,18 Improving the hydrogen storage properties of MgH 2 by adding catalysts is considered as one of the most effective strategies. [19][20][21][22] The transition metal can effectively promote the dehydrogenation and hydrogenation of MgH 2 because of several vacancies and placeholder orbitals belonging to d electrons, which are favorable for charge transfer and bonding. 23 Among them, Fe and Ni not only have excellent catalytic effect but also have low price and abundant reserves; thus, they are highly suitable catalysts for hydrogen storage materials.…”

Section: Introductionmentioning

confidence: 99%

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Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Mgh 2 and Catalyst Compositesmentioning

confidence: 99%

“…This journal is © The Royal Society of Chemistry 2022 reduce the intensity of the Mg-H bond and thus accelerate the dissociation of the H atom. 19 ln…”

Section: Dalton Transactions Papermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

et al. 2022

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“…Each large tungsten carbide ball is 7.78 g, each small tungsten carbide ball is 1.68 g, and the ratio of large and small balls is 9:1. Then, the milled powder was crushed and hydrogenated at 380 °C for 2 h [ 34 ]. The purpose of crushing is to prevent the agglomeration of powder, which leads to the failure of magnesium powder to fully absorb hydrogen.…”

Section: Methodsmentioning

confidence: 99%

Regulation of Kinetic Properties of Chemical Hydrogen Absorption and Desorption by Cubic K2MoO4 on Magnesium Hydride

et al. 2022

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Transition metal catalysts are particularly effective in improving the kinetics of the reversible hydrogen storage reaction for light metal hydrides. Herein, K2MoO4 microrods were prepared using a simple evaporative crystallization method, and it was confirmed that the kinetic properties of magnesium hydride could be adjusted by doping cubic K2MoO4 into MgH2. Its unique cubic structure forms new species in the process of hydrogen absorption and desorption, which shows excellent catalytic activity in the process of hydrogen storage in MgH2. The dissociation and adsorption time of hydrogen is related to the amount of K2MoO4. Generally speaking, the more K2MoO4, the faster the kinetic performance and the shorter the time used. According to the experimental results, the initial dehydrogenation temperature of MgH2 + 10 wt% K2MoO4 composite is 250 °C, which is about 110 °C lower than that of As-received MgH2. At 320 °C, almost all dehydrogenation was completed within 11 min. In the temperature rise hydrogen absorption test, the composite system can start to absorb hydrogen at about 70 °C. At 200 °C and 3 MPa hydrogen pressure, 5.5 wt% H2 can be absorbed within 20 min. In addition, the activation energy of hydrogen absorption and dehydrogenation of the composite system decreased by 14.8 kJ/mol and 26.54 kJ/mol, respectively, compared to pure MgH2. In the cycle-stability test of the composite system, the hydrogen storage capacity of MgH2 can still reach more than 92% after the end of the 10th cycle, and the hydrogen storage capacity only decreases by about 0.49 wt%. The synergistic effect among the new species MgO, MgMo2O7, and KH generated in situ during the reaction may help to enhance the absorption and dissociation of H2 on the Mg/MgH2 surface and improve the kinetics of MgH2 for absorption and dehydrogenation.

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Effects of Ti- and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

Xiao,

Chen,

Wang

et al. 2024

Tungsten

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Catalytic effect of NiO/C derived from Ni-UMOFNs on the hydrogen storage performance of magnesium hydride

Cited by 21 publications

References 46 publications

Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

Regulation of Kinetic Properties of Chemical Hydrogen Absorption and Desorption by Cubic K2MoO4 on Magnesium Hydride

Effects of Ti- and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

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Catalytic effect of NiO/C derived from Ni-UMOFNs on the hydrogen storage performance of magnesium hydride

Cited by 21 publications

References 46 publications

Ni3Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH2

Ni3Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH2

Regulation of Kinetic Properties of Chemical Hydrogen Absorption and Desorption by Cubic K2MoO4 on Magnesium Hydride

Effects of Ti- and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

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Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂

Ni₃Fe/BC nanocatalysts based on biomass charcoal self-reduction achieves excellent hydrogen storage performance of MgH₂