The role of the substrate on the mechanical and thermal stability of Pd thin films during hydrogen (de)sorption

Verma, Nisha; Delhez, R.; Pers, N. M. van der; Tichelaar, F.D.; Böttger, A.

doi:10.1016/j.ijhydene.2020.10.163

Cited by 6 publications

(3 citation statements)

References 63 publications

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“…As shown in Figure 5a, after the hydrogen absorp-tion/desorption cycle, an in-plane tensile stress is induced in the 𝛼-phase Pd film by the substrate constraint during volume contraction from the 𝛽 phase to the 𝛼 phase. [34,41] Similar deformation behavior during the hydrogen ab-/desorption cycle has been reported for the Nb-H system adhered to the substrate. [24,32] This in-plane tensile stress leads to a reduction in the plateau pressure from the 𝛼 phase to the 𝛽 phase and therefore induces hysteresis in the subsequent hydrogen absorption cycle.…”

Section: Comparing the Influences Of Constraint Stress And Intrinsic ...supporting

confidence: 72%

“…This magnitude is consistent with previous research. [41] The similarity in XRD peak positions in the first and second cycles supports the assumption that the shift in the plateau pressure originates from the strain in the in-plane direction rather than that in the out-of-plane direction (Figure S12, Supporting Information)…”

Section: Comparing the Influences Of Constraint Stress And Intrinsic ...supporting

confidence: 53%

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Revealing the Substrate Constraint Effect on the Thermodynamic Behaviour of the Pd–H through Capacitive‐Based Hydrogen‐Sorption Measurement

Kim,

Lee,

Lee

et al. 2024

Advanced Materials

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Mechanical constraints imposed on the Pd‐H system can induce significant strain upon hydrogenation‐induced expansion, potentially leading to changes in the thermodynamic behaviour, such as the phase‐transition pressure. However, the investigation of the constraint effect is often tricky due to the lack of simple experimental techniques for measuring hydrogenation‐induced expansion. In this study, we developed a capacitive‐based measurement system to monitor hydrogenation‐induced areal expansion, which allows us to control and evaluate the magnitude of the substrate constraint. By using the measurement technique, we investigate the influence of substrate constraint intensity on the thermodynamic behaviour of the Pd‐H system. Through experiments with different constraint intensities, we found that the difference in the constraint intensity minimally affects the phase‐transition pressure when the Pd‐H system allows the release of constraint stress through plastic deformation. Our experiments can improve the understanding of the substrate constraint behaviours of Pd‐H systems allowing plastic deformation while demonstrating the potential of capacitive‐based measurement systems to study the mechanical–thermodynamic coupling of M‐H systems.This article is protected by copyright. All rights reserved

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Section: Comparing the Influences Of Constraint Stress And Intrinsic ...supporting

confidence: 72%

Section: Comparing the Influences Of Constraint Stress And Intrinsic ...supporting

confidence: 53%

Revealing the Substrate Constraint Effect on the Thermodynamic Behaviour of the Pd–H through Capacitive‐Based Hydrogen‐Sorption Measurement

Kim,

Lee,

Lee

et al. 2024

Advanced Materials

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“…Nevertheless, this can be considered as advantageous as cracks increase the surface to volume ratios of the materials, thereby enhancing the overall sensor sensitivity. Cracks are by definition avoided when using INP-and ANP-based sensing materials, as the building blocks of the very materials are isolated and thus do not form large "crackable" crystal structures [41,100,101].…”

Section: Methodsmentioning

confidence: 99%

Thin Film and Nanostructured Pd-Based Materials for Optical H2 Sensors: A Review

Sousanis

Biskos

2021

Nanomaterials

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In this review paper, we provide an overview of state-of-the-art Pd-based materials for optical H2 sensors. The first part of the manuscript introduces the operating principles, providing background information on the thermodynamics and the primary mechanisms of optical detection. Optical H2 sensors using thin films (i.e., films without any nanostructuring) are discussed first, followed by those employing nanostructured materials based on aggregated or isolated nanoparticles (ANPs and INPs, respectively), as well as complex nanostructured (CN) architectures. The different material types are discussed on the basis of the properties they can attribute to the resulting sensors, including their limit of detection, sensitivity, and response time. Limitations induced by cracking and the hysteresis effect, which reduce the repeatability and reliability of the sensors, as well as by CO poisoning that deteriorates their performance in the long run, are also discussed together with an overview of manufacturing approaches (e.g., tailoring the composition and/or applying functionalizing coatings) for addressing these issues.

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Correlation among hydrogenation, magnetoelastic coupling, magnetic anisotropy, and magnetoresistance in magnetostrictive, hydrogen-absorbing palladium-cobalt alloy films for hydrogen sensing

Harumoto

Nakamura

Shi

2021

International Journal of Hydrogen Energy

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The role of the substrate on the mechanical and thermal stability of Pd thin films during hydrogen (de)sorption

Cited by 6 publications

References 63 publications

Revealing the Substrate Constraint Effect on the Thermodynamic Behaviour of the Pd–H through Capacitive‐Based Hydrogen‐Sorption Measurement

Revealing the Substrate Constraint Effect on the Thermodynamic Behaviour of the Pd–H through Capacitive‐Based Hydrogen‐Sorption Measurement

Thin Film and Nanostructured Pd-Based Materials for Optical H2 Sensors: A Review

Correlation among hydrogenation, magnetoelastic coupling, magnetic anisotropy, and magnetoresistance in magnetostrictive, hydrogen-absorbing palladium-cobalt alloy films for hydrogen sensing

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