期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 46, 页码 23767-23778出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.04.191
关键词
Hydrogen storage; Polymer nanocomposite; LaNi5; Separation membrane; Metal hydride
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior -Brasil (CAPES) [001]
- FAPESP (Sao Paulo Research Foundation) [2018/18986e3]
This study investigated the preparation of PEI-LaNi5 composite films for hydrogen storage, demonstrating that PEI films filled with LaNi5 are promising materials for this purpose. The membranes were successfully produced through solvent casting assisted by an ultrasonic bath, and the results showed that the film morphology remained unchanged after hydrogenation cycles.
This study investigates the preparation of polyetherimide (PEI) - LaNi5 composites films for hydrogen storage. Prior to the polymer addition, LaNi5 was ball-milled at different conditions (250, 350, and 450 RPM) and annealed at 500 degrees C for 1 h under vacuum. The composites were produced with BM-LaNi5-350 (PEI/LaNi5-350) and annealed BM-LaNi5-350 (PEI/LaNi5-350-TT). Membranes were successfully produced through solvent casting assisted by an ultrasonic bath. The particles dispersion and the film morphology did not change after hydrogenation cycles. In the H-2 sorption experiments at 43 degrees C and 20 bar, the films stored H-2 without incubation time; both samples reached a capacity of similar to 0.6 wt%. The H-2 sorption kinetics of PEI/LaNi5-350 was comparable to that of BM-LaNi5-350, whereas PEI/ LaNi5-350-TT presented significantly slower kinetics. LaNi5 oxidation was hindered by PEI, showing that it can be explored to improve metal hydrides air resistance. The results demonstrated that PEI films filled with LaNi5 are promising materials for hydrogen storage. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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