Preparation and properties of hydrogen-storage composites in the MgH2-C system

Lukashev, R. V.; Klyamkin, S. N.; Тарасов, Б. П.

doi:10.1134/s0020168506070077

Cited by 35 publications

(8 citation statements)

References 11 publications

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“…The adapted Rieke method is considered as a better method for the preparation of nano-sized Mg with controllable sizes, and which can dope transition metal catalysts into a Mg/MgH 2 system by a simple chemical route. With regard to the nanoscaling, various catalysts for improving the hydrogen storage properties of MgH 2 have been investigated, such as transition metals/metal oxides/halogenides (Ma et al, 2009(Ma et al, , 2013Cui et al, 2014;Rizo-Acosta et al, 2018;Zhang et al, 2018;Liu et al, 2019b), rare earth metal oxides/halogenides (Singh et al, 2013;Lin et al, 2014Lin et al, , 2015Wang et al, 2015), carbon materials (Lukashev et al, 2006;Liu et al, 2013;Rather et al, 2016), and other hydrides (Lu et al, 2010;Terent'ev et al, 2015;Jangir et al, 2018). In addition, some noble metals, such as Pd, have been reported to be effective for facilitating hydrogenation of MgH 2 (Du et al, 2007;Callini et al, 2010;Ham et al, 2013;Chung et al, 2015;Liu et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Magnesium Nanoparticles With Pd Decoration for Hydrogen Storage

et al. 2020

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In this work, Magnesium nanoparticles with Pd decoration, ranging from 40 to 70 nm, were successfully coprecipitated from tetrahydrofuran (THF) solution, assigned as the Mg-Pd nanocomposite. The Mg-Pd nanocomposite exhibits superior hydrogen storage properties. For the hydrogenated Mg-Pd nanocomposite at 150 • C, the onset dehydrogenation temperature is significantly reduced to 216.8 • C, with a lower apparent activation energy for dehydrogenation of 93.8 kJ/mol H 2 . High-content γ-MgH 2 formed during the hydrogenation process, along with PH 0.706 , contributes to the enhancing of desorption kinetics. The Mg-Pd nanocomposite can take up 3.0 wt% hydrogen in 2 h at a temperature as low as 50 • C. During lower hydrogenation temperatures, Pd can dissociate hydrogen and create a hydrogen diffusion pathway for the Mg nanoparticles, leading to the decrease of the hydrogenation apparent activation energy (44.3 kJ/mol H 2 ). In addition, the Mg-Pd alloy formed during the hydrogenation/dehydrogenation process can play an active role in the reversible metal hydride transformation, destabilizing the MgH 2 .

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Section: Introductionmentioning

confidence: 99%

Magnesium Nanoparticles With Pd Decoration for Hydrogen Storage

et al. 2020

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“…For mechanochemically prepared graphite/MgH 2 [6,7], graphite/Mg [8,9], carbon/MgH 2 [10], oxide/MgH 2 [11][12][13] and metal/MgH 2 [14,15], the hydrogen storage characteristics have been studied. It has been shown that Nb 2 O 5 /MgH 2 upon mechanical milling is kinetically activated for hydriding and dehydriding processes [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and hydrogen storage properties of mechanically ball-milled SiC/MgH2 nanocomposites

Imamura¹,

Nakatomi²,

Hashimoto³

et al. 2009

Journal of Alloys and Compounds

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“…However, its high hydrogen desorption temperature and the slow hydrogen desorption reaction kinetics limit its practical use for hydrogen storage [1][2][3][4][5]. Many attempts have been made to overcome these problems by mechanically milling MgH 2 with additives such as transition metals [6][7][8][9][10], oxides [11][12][13][14][15][16][17][18][19][20][21], carbon [22][23][24][25][26], and Nb [27][28][29]. On the other hand, the mechanical milling of the MgH 2 without the use of any additives also resulted in enhanced hydrogen desorption properties by the microstructural and morphological changes [2,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%