Exploring the influence of Single-Walled carbon nanotubes substituted Mg�Ti alloy for hydriding and dehydriding properties

Nivedhitha, KS and Venkatesh, R and Banapurmath, NR and Ramesh, K and Sajjan, AM and Chikkatti, PBS and Yogesh, Y and Jain, A and Nithya, C (2024) Exploring the influence of Single-Walled carbon nanotubes substituted Mg�Ti alloy for hydriding and dehydriding properties. In: International Journal of Hydrogen Energy, 59 . pp. 272-281.

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Abstract

Currently, researchers are giving much more attention to carbon allotropes for hydrogen storage applications. SWCNT-(Mg�Ti) composites have been synthesized by the ball milling technique. The XRD patterns confirmed the solid solution formation of Ti in Mg. The substitution of SWCNT in Mg�Ti intermetallic alloy increases the dislocation density to 8.2x10�3nm�2 and reduces the crystal size from 46 to 28 nm and lattice strain of 0.54 to 0.28 . The Raman analysis confirmed the existence of SWCNTs by presenting D and G bands and also confirmed the vibrations of Mg�Ti alloy. After the substitution of SWCNT, the exothermic peak reduced from 232 °C to 210 °C. The activation energy is also reduced after the substitution of SWCNT; it drastically reduces the activation energy to 66.59 kJ/mol for Mg67Ti29SWCNT4 alloy among the prepared samples. The impedance spectroscopy shows a higher diffusion coefficient of 5.2488x10�11 cm2s�1 for SWCNT substituted Mg�Ti alloy compared to pristine alloy. The hydriding/dehydriding studies were observed on the developed electrode material and Mg67Ti29SWCNT4 delivered a maximum storage capacity of 826 mAhg�1. © 2024 Hydrogen Energy Publications LLC

Item Type:	Journal Article
Publication:	International Journal of Hydrogen Energy
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the Authors.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Physical & Mathematical Sciences > Physics
Date Deposited:	24 Apr 2024 06:30
Last Modified:	24 Apr 2024 06:30
URI:	https://eprints.iisc.ac.in/id/eprint/84639

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