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Abstract <p>The present study explored the hydrogen storage properties of the Ti<sub>30</sub>V<sub>60</sub>Mn<sub>3.3</sub>Cr<sub>6.6</sub> alloy. The alloy was synthesized using arc melting method and activated under dynamic vacuum for 2 h. The X-ray diffraction study confirmed the formation of a single-phase bcc structure. The Ti<sub>30</sub>V<sub>60</sub>Mn<sub>3.3</sub>Cr<sub>6.6</sub> alloy exhibited a hydrogen absorption capacity of 3.61 wt % at room temperature under 20 bar hydrogen pressure. The hydrogen storage capacity of the alloy reduced with increase in temperature. Quick absorption was observed with short incubation time in the kinetic study. The alloy absorbed nearly 90% of its saturation value in 5 min. The alloy exhibited accelerated kinetics at elevated temperatures. The enthalpy and entropy change during absorption were found as –45.26 kJ/mol H<sub>2</sub> and –113.93 J/mol H<sub>2</sub>/K, respectively. The maximum hydrogen desorption in this alloy was observed at 410 K during in-situ temperature-programmed desorption study.</p>

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Crystal Structure and Hydrogen Storage Properties of Ti30V60Mn3.3Cr6.6 Alloy

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • F. J. Khan,
  • A. Kumar,
  • S. Banerjee,
  • A. Kamble

摘要

Abstract

The present study explored the hydrogen storage properties of the Ti30V60Mn3.3Cr6.6 alloy. The alloy was synthesized using arc melting method and activated under dynamic vacuum for 2 h. The X-ray diffraction study confirmed the formation of a single-phase bcc structure. The Ti30V60Mn3.3Cr6.6 alloy exhibited a hydrogen absorption capacity of 3.61 wt % at room temperature under 20 bar hydrogen pressure. The hydrogen storage capacity of the alloy reduced with increase in temperature. Quick absorption was observed with short incubation time in the kinetic study. The alloy absorbed nearly 90% of its saturation value in 5 min. The alloy exhibited accelerated kinetics at elevated temperatures. The enthalpy and entropy change during absorption were found as –45.26 kJ/mol H2 and –113.93 J/mol H2/K, respectively. The maximum hydrogen desorption in this alloy was observed at 410 K during in-situ temperature-programmed desorption study.