Enhancing Hydrogen Storage in AZ31 Alloy through Pd/G Composite

Song-Jeng  Huang; Chen-Ju  Lai; Veeramanikandan  Rajagopal; Wen-Lie  Chang

doi:10.6000/1929-5995.2023.12.18

Authors

Song-Jeng Huang Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan https://orcid.org/0000-0002-6582-0339
Chen-Ju Lai Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
Veeramanikandan Rajagopal Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
Wen-Lie Chang Top Nano Technology Co., Ltd. 6F., No.11, Wuquan Rd., Wugu Township, Taipei County 248, Taiwan

DOI:

https://doi.org/10.6000/1929-5995.2023.12.18

Keywords:

Magnesium alloy, hydrogen storage, palladium, graphene

Abstract

In this research, we investigated the catalytic effects of Palladium/Graphene(Pd/G) on AZ31 alloy for hydrogen storage. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (SEM-EDS) were employed to confirm the homogeneous distribution of AZ31 and observe phase changes after mechanical alloying with the catalysts. The hydrogen storage properties of AZ31 with catalysts were systematically examined, and the time of maximum reaction rate for nucleation was determined using Avarami Plot. The results of the study show that the incorporation of 2% Pd/G resulted in the fastest hydrogen absorption and desorption time, taking 200 seconds to achieve 90% hydrogen storage with a maximum of 6.04 wt%. The corresponding maximum hydrogen desorption occurred in 694 seconds, reaching 6.03 wt%. Consequently, the introduction of 2% Pd/G catalyst proved to be effective in significantly enhancing the hydrogen ab/desorption rates of AZ31 alloy.

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