Experimental studies on LaNi4.25Al0.75 alloy for hydrogen and thermal energy storage applications

Malleswararao, K and Kumar, P and Dutta, P and Srinivasa Murthy, S (2023) Experimental studies on LaNi4.25Al0.75 alloy for hydrogen and thermal energy storage applications. In: International Journal of Hydrogen Energy .

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Abstract

Reversible exothermic and endothermic reactions between metals/alloys and hydrogen gas provide great opportunity to utilize various thermal energy sources such as waste heat, industrial exhaust, and solar thermal energy. Metal hydrides with favourable properties to operate at medium temperature heat (about 150 °C) are limited, and studies on hydrides in this temperature range are scarce. Hence, the present study aims at experimental investigations on LaNi4.25Al0.75 alloy in the temperature range of 150 °C–200 °C. A novel cartridge type of reactor is employed to investigate the hydrogen storage characteristics and thermal storage performance of this alloy. LaNi4.25Al0.75 is found to have a hydrogen storage capacity of about 1.20 wt% at 10 bar and 25 °C. In addition, it can store a total thermal energy of 285.7 kJ.kgMH−1 and can deliver heat at an average rate of 287.5 W.kgMH−1 at an efficiency of 64.1%.

Item Type:	Journal Article
Publication:	International Journal of Hydrogen Energy
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Aluminum alloys; Heat storage; Hydrides; Hydrogen storage; Lanthanum alloys; Solar power generation; Solar thermal energy; Ternary alloys; Waste heat, 150 ° C; Endothermic reactions; Energy storage applications; Hydrogen energy storages; Lani4.25al0.75; Metal alloys; Metal-hydrides; Temperature range; Thermal energy storage; Thermal storage, Thermal energy
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	25 May 2023 03:28
Last Modified:	25 May 2023 03:28
URI:	https://eprints.iisc.ac.in/id/eprint/81513

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