Sefa Emre Sünbül, Kürşat İçil
This study investigates the impact of silver (Ag) substitution on the microstructure and hydrogen storage properties of an Mg1-xAgxNi-based alloy. Density functional theory (DFT) calculations as well as universal machine learning interatomic potentials are used to explore how Ag substitution leads to a decreased hydrogen desorption energy. Experimental analysis of arc-melted Mg1.95Ag0.05Ni ribbons reveals structural changes between the two different production methods. X-ray diffraction (XRD), scanning electron microscope (SEM), differential thermal analysis (DTA), thermogravimetric analysis (TGA), and transmission electron microscope (TEM) confirm refined microstructures. In addition, hydrogen properties of melt-spun ribbons were measured with Sievert type and electrochemical device. The Sieverts-type measurement demonstrates about 3w% H2 absorption and desorption, while electrochemical measurements show an initial discharge capacity of 80 mAh/g, with gradual fading over cycles. X-ray photoelectron spectroscopy (XPS) unambiguously confirms Ag substitution and provides detailed insight into surface oxidation processes induced by prolonged exposure to ambient conditions. The results demonstrate that Ag incorporation plays a key role in tailoring the microstructure and significantly enhancing the hydrogen storage performance.
@article{498d3b56-e77c-4ed2-b3f1-c93d7cd11b92,
title={2026 Sunbul MgAgNi Hydrogen Storage Alloy},
author={Sefa Emre Sünbül and Kürşat İçil},
year={2026},
language={en}
}TY - JOUR TI - 2026 Sunbul MgAgNi Hydrogen Storage Alloy AU - Sefa Emre Sünbül AU - Kürşat İçil PY - 2026 LA - en ER -
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