Effects of stress and defects on hydrogenation and magnetic properties in (111) fiber-textured palladium cobalt alloy films

Harumoto, Takashi; Shi, Ji; Nakamura, Yoshio

doi:10.1016/j.ijhydene.2020.02.118

Cited by 10 publications

(2 citation statements)

References 94 publications

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“…It was found in [92] that thinner film samples would be more suitable for sensing applications because of their higher surface-tovolume ratio and since the absolute value of the measured signal increases when the film thickness is decreased. This proposed concept has been followed [16,72,[110][111][112][113][114][115], and its feasibility was further confirmed by demonstrations of detection of low concentration of H 2 using thin Pd/Co films as the sensor material [72,92,111,116,117]. In particular, it was shown that the EHE sensitivity of optimised samples could exceed 240% per 104 ppm at H 2 concentrations below 0.5% in the N 2 /H 2 atmosphere [92], thus providing a more than two orders of magnitude higher sensitivity compared with the competing resistivity-based sensor architectures.…”

Section: Magneto-electronic Hydrogen Sensors Based On the Magneto-opt...mentioning

confidence: 99%

Magneto-Electronic Hydrogen Gas Sensors: A Critical Review

Maksymov

Kostylev

2022

Chemosensors

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Devices enabling early detection of low concentrations of leaking hydrogen and precision measurements in a wide range of hydrogen concentrations in hydrogen storage systems are essential for the mass-production of fuel-cell vehicles and, more broadly, for the transition to the hydrogen economy. Whereas several competing sensor technologies are potentially suitable for this role, ultra-low fire-hazard, contactless and technically simple magneto-electronic sensors stand apart because they have been able to detect the presence of hydrogen gas in a range of hydrogen concentrations from 0.06% to 100% at atmospheric pressure with the response time approaching the industry gold standard of one second. This new kind of hydrogen sensors is the subject of this review article, where we inform academic physics, chemistry, material science and engineering communities as well as industry researchers about the recent developments in the field of magneto-electronic hydrogen sensors, including those based on magneto-optical Kerr effect, anomalous Hall effect and Ferromagnetic Resonance with a special focus on Ferromagnetic Resonance (FMR)-based devices. In particular, we present the physical foundations of magneto-electronic hydrogen sensors and we critically overview their advantages and disadvantages for applications in the vital areas of the safety of hydrogen-powered cars and hydrogen fuelling stations as well as hydrogen concentration meters, including those operating directly inside hydrogen-fuelled fuel cells. We believe that this review will be of interest to a broad readership, also facilitating the translation of research results into policy and practice.

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Section: Magneto-electronic Hydrogen Sensors Based On the Magneto-opt...mentioning

confidence: 99%

Magneto-Electronic Hydrogen Gas Sensors: A Critical Review

Maksymov

Kostylev

2022

Chemosensors

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“…It was found in [90] that thinner film samples would be more suitable for sensing applications because of their higher surface-to-volume ratio and since the absolute value of the measured signal increases when the film thickness is decreased. This proposed concept has been followed [14,70,[108][109][110][111][112][113] and its feasibility was further confirmed by demonstrations of detection of low concentration of H 2 using thin Pd/Co films as the sensor material [70,90,109,114,115]. In particular, it was shown that the EHE sensitivity of optimised samples could exceed 240% per 104 ppm at H 2 concentrations below 0.5% in the N 2 /H 2 atmosphere [90], thus providing a more than two orders of magnitude higher sensitivity compared with the competing resistivity-based sensor architectures.…”

Section: Magneto-electronic Hydrogen Sensors Based On the Magneto-opt...mentioning

confidence: 99%

Magneto-electronic hydrogen gas sensors: a critical review

Maksymov¹,

Kostylev²

2021

Preprint

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Devices enabling early detection of low concentrations of leaking hydrogen and precision measurements in a wide range of hydrogen concentrations in hydrogen storage systems are essential for the mass-production of fuel-cell vehicles and, more broadly, for the transition to the hydrogen economy. Whereas several competing sensor technologies are potentially suitable for this role, ultra-low fire-hazard, contactless and technically simple magneto-electronic sensors stand apart because they have been able to detect the presence of hydrogen gas in a range of hydrogen concentrations from 0.06% to 100% at atmospheric pressure with the response time approaching the industry gold standard of one second. This new kind of hydrogen sensors is the subject of this review article, where we inform the academic physics, chemistry, material science and engineering communities as well as industry researchers about the recent developments in the field of magneto-electronic hydrogen sensors, including those based on magneto-optical Kerr effect, anomalous Hall effect and Ferromagnetic Resonance with a special focus on Ferromagnetic Resonance (FMR) based devices. In particular, we present the physical foundations of magneto-electronic hydrogen sensors and we critically overview their advantages and disadvantages for applications in the vital areas of the safety of hydrogen-powered cars and hydrogen fuelling stations as well as hydrogen concentration meters, including those operating directly inside hydrogen-fuelled fuel cells. We believe that this review will be of interest to a broad readership, also facilitating the translation of research results into policy and practice.

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