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Open AccessArticle

Design and Fabrication of High Activity Retention Al-Based Composite Powders for Mild Hydrogen Generation

College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Institute of Materials Genome and Big Data, and Institute of Hydrogen and Fuel Cell, Harbin Institute of Technology, Shenzhen 518055, China
Shenzhen R&D Center for Al-based Hydrogen Hydrolysis Materials, Shenzhen 518055, China
Authors to whom correspondence should be addressed.
Materials 2019, 12(20), 3328;
Received: 24 August 2019 / Revised: 11 September 2019 / Accepted: 7 October 2019 / Published: 12 October 2019
Al–Bi–Sn–Cu composite powders for hydrogen generation were designed from the calculated phase diagram and prepared by the gas atomization process. The morphologies and structures of the composite powders were investigated using X-ray diffraction (XRD) and a scanning electron microscope (SEM) equipped with energy-dispersive X-ray (EDX) spectroscopy, and the results indicate that the Cu additive enhanced the phase separation between the Al-rich phase and the (Bi, Sn)-rich phase. The hydrogen generation performances were investigated by reacting the materials with distilled water. The Al–Bi–Sn–Cu powders reveal a stable hydrogen generation rate, and the Al–10Bi–7Sn–3Cu (wt%) powder exhibits the best hydrogen generation performance in 50 °C distilled water which reaches 856 mL/g in 800 min. In addition, the antioxidation properties of the powders were also studied. The Al–10Bi–7Sn–3Cu (wt%) powder has a good resistance to oxidation and moisture, which shows great potential for being the hydrogen source for fuel cell applications. View Full-Text
Keywords: hydrogen generation; aluminum; hydrolysis reaction; gas atomization hydrogen generation; aluminum; hydrolysis reaction; gas atomization
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Wang, C.; Lin, K.; Liu, Y.; Chen, X.; Zou, H.; Qiu, C.; Yang, S.; Liu, X. Design and Fabrication of High Activity Retention Al-Based Composite Powders for Mild Hydrogen Generation. Materials 2019, 12, 3328.

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