Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB5 alloys
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International Journal of Hydrogen Energy
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The effects of substituting Cu for Sn on the microstructure, hydrogen storage capacity of
La0.7Mg0.3Al0.3Mn0.4Sn0.5 xCuxNi3.8 alloys (where X ¼ 0.0, 0.1, 0.2, 0.3, and 0.5) alloys were
investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy
dispersive X-ray spectroscopy (EDS), and pressure-composition isotherms (PCIs). The alloys
were mainly composed of three phases: LaNi5, MgNi2, and LaNiSn. However, the La0.7Mg0.3Al0.3Mn0.4Cu0.5Ni3.8
alloy (X ¼ 0.5) exhibited a (La, Mg)Ni3 phase when studied with SEM.
The PCI tests showed that increasing the Cu content increases the maximum hydrogen
storage capacity.
Como referenciar
CASINI, JULIO C.S.; SILVA, FRANKS M.; GUO, ZAI-PING; LIU, HUA K.; FARIA, RUBENS N.; TAKIISHI, HIDETOSHI. Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB5 alloys. International Journal of Hydrogen Energy, v. 41, p. 17022-17028, 2016. DOI: 10.1016/j.ijhydene.2016.07.107. Disponível em: http://repositorio.ipen.br/handle/123456789/26971. Acesso em: 30 Dec 2025.
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