Materials for hydrogen storage at room temperature – An overview

Meduri, Sitaram; Nandanavanam, Jalaiah

doi:10.1016/j.matpr.2022.05.059

Cited by 16 publications

(4 citation statements)

References 88 publications

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“…Liang et al [19] also reported an effective way to enhance hydrogen storage performance by using a porous carbon nanotube (CNT). However, the physisorption process has a low enthalpy of adsorption as revealed by previous studies [20,21]. Chemisorption is favorable because it can create a better storage capacity in ambient conditions [22].…”

Section: Introductionmentioning

confidence: 94%

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

et al. 2023

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The high hydrogen storage capacity (10.5 wt.%) and release of hydrogen at a moderate temperature make LiAlH4 an appealing material for hydrogen storage. However, LiAlH4 suffers from slow kinetics and irreversibility. Hence, LaCoO3 was selected as an additive to defeat the slow kinetics problems of LiAlH4. For the irreversibility part, it still required high pressure to absorb hydrogen. Thus, this study focused on the reduction of the onset desorption temperature and the quickening of the desorption kinetics of LiAlH4. Here, we report the different weight percentages of LaCoO3 mixed with LiAlH4 using the ball-milling method. Interestingly, the addition of 10 wt.% of LaCoO3 resulted in a decrease in the desorption temperature to 70 °C for the first stage and 156 °C for the second stage. In addition, at 90 °C, LiAlH4 + 10 wt.% LaCoO3 can desorb 3.37 wt.% of H2 in 80 min, which is 10 times faster than the unsubstituted samples. The activation energies values for this composite are greatly reduced to 71 kJ/mol for the first stages and 95 kJ/mol for the second stages compared to milled LiAlH4 (107 kJ/mol and 120 kJ/mol for the first two stages, respectively). The enhancement of hydrogen desorption kinetics of LiAlH4 is attributed to the in situ formation of AlCo and La or La-containing species in the presence of LaCoO3, which resulted in a reduction of the onset desorption temperature and activation energies of LiAlH4.

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Section: Introductionmentioning

confidence: 94%

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

et al. 2023

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“…Equation (6) gives us a quantitative correlation between dihydrogen bond length and H 2 's adsorption distance from NCMSs on MXenes with mono-component FGs, which can be readily extended to other crystal material surfaces with similar local structures.…”

Section: Analysis To Mxene's Hydrogen Storage Mechanismmentioning

confidence: 99%

“…[1][2][3] However, the most difficult challenge is to find materials that can store hydrogen with large gravimetric and volumetric density and operate under ambient thermodynamic conditions. [4][5][6] While the bonding of hydrogen existed in nature is either too strong as in metal hydrides, or too weak as in MOFs. 7 To balance the thermodynamics and kinetics, hydrogen binding needs to be between physisorption and chemisorption, namely, in quasimolecular form, where H 2 is activated with elongated H-H bond length.…”

Section: Introductionmentioning

confidence: 99%

The relationship between activated H2 bond length and adsorption distance on MXenes identified with graph neural network and resonating valence bond theory

Cheng,

Li,

Wang

et al. 2023

The Journal of Chemical Physics

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Motivated by the recent experimental study on hydrogen storage in MXene multilayers [Liu et al., Nat. Nanotechnol. 16, 331 (2021)], for the first time we propose a workflow to computationally screen 23 857 compounds of MXene to explore the general relation between the activated H2 bond length and adsorption distance. By using density functional theory we generate a dataset to investigate the adsorption geometries of hydrogen on MXenes, based on which we train physics-informed atomistic line graph neural networks (ALIGNNs) to predict adsorption parameters. To fit the results, we further derived a formula that quantitatively reproduces the dependence of H2 bond length on the adsorption distance from MXenes within the framework of Pauling's resonating valence bond theory, revealing the impact of transition metal’s ligancy and valence on activating dihydrogen in H2 storage.

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“…6,[9][10][11][12][13][14] Although thousands of MOFs have been synthesized, only a few have been investigated for H 2 storage, specically at room temperatures and low pressures. 15,16 The 2025 main criteria set by the US Department of Energy (DOE) are 55 mg H 2 per g [MOF + H 2 ] system or 5.5 wt% (1.8 kW h kg −1 ) for gravimetric storage and 40 g H 2 per L [MOF + H 2 ] (1.3 kW h L −1 ) for volumetric storage under moderate temperatures (from −40 °C to 60 °C) and low pressures (below 100 bar). 7,17 Besides, the ultimate DOE targets are 6.5 wt% and 50 g H 2 per L.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage in M(BDC)(TED)_0.5 metal–organic framework: physical insights and capacities

Xuan Huynh,

Ngan,

Yen Ngoc

et al. 2024

RSC Adv.

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Materials for hydrogen storage at room temperature – An overview

Cited by 16 publications

References 88 publications

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

The relationship between activated H2 bond length and adsorption distance on MXenes identified with graph neural network and resonating valence bond theory

Hydrogen storage in M(BDC)(TED)_0.5 metal–organic framework: physical insights and capacities

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Materials for hydrogen storage at room temperature – An overview

Cited by 16 publications

References 88 publications

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

Enhancement of the Desorption Properties of LiAlH4 by the Addition of LaCoO3

The relationship between activated H2 bond length and adsorption distance on MXenes identified with graph neural network and resonating valence bond theory

Hydrogen storage in M(BDC)(TED)0.5 metal–organic framework: physical insights and capacities

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Hydrogen storage in M(BDC)(TED)_0.5 metal–organic framework: physical insights and capacities