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Review

Enhancing the Hydrogen Storage Properties of AxBy Intermetallic Compounds by Partial Substitution: A Short Review

1
Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Korea
2
Division of Nano & Information Technology, University of Science and Technology KIST School, Seoul 02792, Korea
3
Strategy & Technology Division, Hyundai Motor Company, Uiwang 16082, Korea
*
Author to whom correspondence should be addressed.
Hydrogen 2020, 1(1), 38-63; https://doi.org/10.3390/hydrogen1010004
Received: 6 October 2020 / Revised: 2 December 2020 / Accepted: 9 December 2020 / Published: 15 December 2020
Solid-state hydrogen storage covers a broad range of materials praised for their gravimetric, volumetric and kinetic properties, as well as for the safety they confer compared to gaseous or liquid hydrogen storage methods. Among them, AxBy intermetallics show outstanding performances, notably for stationary storage applications. Elemental substitution, whether on the A or B site of these alloys, allows the effective tailoring of key properties such as gravimetric density, equilibrium pressure, hysteresis and cyclic stability for instance. In this review, we present a brief overview of partial substitution in several AxBy alloys, from the long-established AB5 and AB2-types, to the recently attractive and extensively studied AB and AB3 alloys, including the largely documented solid-solution alloy systems. We not only present classical and pioneering investigations, but also report recent developments for each AxBy category. Special care is brought to the influence of composition engineering on desorption equilibrium pressure and hydrogen storage capacity. A simple overview of the AxBy operating conditions is provided, hence giving a sense of the range of possible applications, whether for low- or high-pressure systems. View Full-Text
Keywords: metal hydrides; AxBy intermetallics; elemental substitution; low/high pressure applications metal hydrides; AxBy intermetallics; elemental substitution; low/high pressure applications
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MDPI and ACS Style

Lys, A.; Fadonougbo, J.O.; Faisal, M.; Suh, J.-Y.; Lee, Y.-S.; Shim, J.-H.; Park, J.; Cho, Y.W. Enhancing the Hydrogen Storage Properties of AxBy Intermetallic Compounds by Partial Substitution: A Short Review. Hydrogen 2020, 1, 38-63. https://doi.org/10.3390/hydrogen1010004

AMA Style

Lys A, Fadonougbo JO, Faisal M, Suh J-Y, Lee Y-S, Shim J-H, Park J, Cho YW. Enhancing the Hydrogen Storage Properties of AxBy Intermetallic Compounds by Partial Substitution: A Short Review. Hydrogen. 2020; 1(1):38-63. https://doi.org/10.3390/hydrogen1010004

Chicago/Turabian Style

Lys, Andrii, Julien O. Fadonougbo, Mohammad Faisal, Jin-Yoo Suh, Young-Su Lee, Jae-Hyeok Shim, Jihye Park, and Young W. Cho. 2020. "Enhancing the Hydrogen Storage Properties of AxBy Intermetallic Compounds by Partial Substitution: A Short Review" Hydrogen 1, no. 1: 38-63. https://doi.org/10.3390/hydrogen1010004

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