Hydrogen absorption by LaCu5 and nuclear magnetic resonance (NMR) studies of hydrogen diffusion in β-LaCu5 hydride

Spada, F. E.; Bowman, Robert C.; Cantrell, J. S.

doi:10.1016/0022-5088(87)90060-9

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…On the other hand, the LaNi 5−x Cu x system has been relatively more researched. The LaCu 5 alloy was reported to absorb hydrogen with PCI plateau pressures of 2-3 bar; however, similarly to the YNi 5 alloy, the hydrogen concentration was much lower than in the parent LaNi 5 alloy [18]. Recent studies revealed that LaNi 5−x Cu x alloys exhibit decent electrochemical properties for storing hydrogen with ease of activation; however, their cycling stability is suppressed for mediocre Cu concentrations [19].…”

Section: Introductionmentioning

confidence: 99%

Tuning Hydrogen Storage Properties in La1−xYxNi4.5Cu0.5 (x = 0.1; 0.2; 0.3; 0.4, 0.5) Alloys

Mańka,

Kinoshita,

Nowak

et al. 2023

Energies

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Metal hydrides of AB5 compositions have been investigated over the years as they offer extraordinary volumetric hydrogen densities with high cycling stability and purity of released hydrogen. Moreover, by doping with different elements, the sorption properties of alloys can be significantly changed according to their foreseen applications. In this contribution, we report the synthesis routes and hydrogenation characteristics of La1−xYxNi4.5Cu0.5. The synthesized alloys exhibit excellent structural purity with all reflections indexed by the hexagonal P6/mmm structure. It was found that the Y content can easily tune (raise) the equilibrium pressures of the pressure–composition isotherms, while overall gravimetric density remains at a level exceeding 1.5 wt.% up to x = 0.3 then strongly decreases. The pressure range for desorption can be tuned from 1.5 to 5 bars at room temperature. Some alloys (x = 0; 0.2) exhibit very good stability during 1000 cycles of hydrogen loading and unloading. Furthermore, activation of the alloys is prompt, making them good candidates for stationary hydrogen storage, non-mechanical hydrogen compressors, or soft actuators.

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Section: Introductionmentioning

confidence: 99%