Author(s) |
Jason J, Ian
Pal, Yash
Lee, Hoonkyung
Kaewmaraya, Thanayut
Aguey-Zinsou, K -F
Hussain, Tanveer
Panigrahi, Puspamitra
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Publication Date |
2024-11-26
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Abstract |
<p>Using first-principles calculations, we explore the potentials of boron hydride (BH) for hydrogen (H<sub>2</sub>) storage. Lithium (Li) and potassium (K) dopants enhance the H<sub>2</sub> storage capabilities of BH. The binding energies of Li, and K are found as − 2.65 and − 1.69 eV, respectively, indicating a strong binding. Ab initio molecular dynamic (AIMD) simulations at 400 K provide insights into the thermal stability of Li-, and K-doped BH. Notably, H<sub>2</sub> molecule adsorptions on metal-decorated BH result in substantial binding energies of − 0.45 and − 0.29 eV/H<sub>2</sub> for Li, and K, respectively. Under layered adsorption, the BH–4Li (BH–4K) accommodates up to 38H<sub>2</sub> (34H<sub>2</sub>) molecules, boasting an impressive gravimetric density of 26.46 (16.57) wt.%. Even a single layer of H<sub>2</sub> over BH–4Li, and BH–4K corresponds to 11.70 wt% and 7.56 wt%, respectively. Adsorption mechanism of H<sub>2</sub> could be tuned under the influence of stress and strain. Additionally, thermodynamic analysis based on Langmuir model is employed to elucidate the H<sub>2</sub> storage capabilities under practical conditions of temperature and pressure.<p>
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Citation |
International Journal of Hydrogen Energy, v.92, p. 1389-1400
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ISSN |
1879-3487
0360-3199
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Link | |
Publisher |
Elsevier Ltd
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Title |
Enhanced hydrogen storage properties of light metals dispersed boron hydride monolayer
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Type of document |
Journal Article
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Entity Type |
Publication
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