Correlative high-resolution imaging of hydrogen in Mg2Ni hydrogen storage thin films

Andersen, Dustin; Chen, H.; Pal, Soupitak; Cressa, Luca; Castro, Olivier De; Wirtz, Tom; Schmitz, Guido; Eswara, Santhana

doi:10.1016/j.ijhydene.2022.12.216

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…Depth profile measurements for Li suggested that it is associated with alumina oxide layers, and tritium signals were much less intense in the middling depths of the cladding. Andersen et al studied hydrogen inclusion using magnetic sector SIMS [101]. Mg 2 Ni/Mg 2 NiH 4 thin films were analyzed with high-resolution imaging and depth profiling to characterize such materials in fields from batteries to high-strength alloys using magnetic sector SIMS [131,152].…”

Section: Irradiated Materialsmentioning

confidence: 99%

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Shen,

Howard,

2024

Materials

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Secondary Ion Mass Spectrometry (SIMS) is an outstanding technique for Mass Spectral Imaging (MSI) due to its notable advantages, including high sensitivity, selectivity, and high dynamic range. As a result, SIMS has been employed across many domains of science. In this review, we provide an in-depth overview of the fundamental principles underlying SIMS, followed by an account of the recent development of SIMS instruments. The review encompasses various applications of specific SIMS instruments, notably static SIMS with time-of-flight SIMS (ToF-SIMS) as a widely used platform and dynamic SIMS with Nano SIMS and large geometry SIMS as successful instruments. We particularly focus on SIMS utility in microanalysis and imaging of metals and alloys as materials of interest. Additionally, we discuss the challenges in big SIMS data analysis and give examples of machine leaning (ML) and Artificial Intelligence (AI) for effective MSI data analysis. Finally, we recommend the outlook of SIMS development. It is anticipated that in situ and operando SIMS has the potential to significantly enhance the investigation of metals and alloys by enabling real-time examinations of material surfaces and interfaces during dynamic transformations.

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Section: Irradiated Materialsmentioning

confidence: 99%

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Shen,

Howard,

2024

Materials

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“…The FIB-SEM instrument is equipped with an in-house-designed magnetic sector SIMS, and details about the FIB-SEM-SIMS instrument and its performance can be found elsewhere . The implementation of SIMS in the present operando study presents a huge advantage in terms of chemical analysis, allowing to detect and measure the distribution of low-Z elements such as H and Li. , Li often plays an important role in degradation mechanisms due to its high ionic mobility and capability to form dendrites, − and therefore, it is essential to observe the evolution of the Li distribution.…”

Section: Design Of the Operando Sample Holdermentioning

confidence: 99%

Toward Operando Structural, Chemical, and Electrochemical Analyses of Solid-State Batteries Using Correlative Secondary Ion Mass Spectrometry Imaging

et al. 2023

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The global transition from fossil fuels to green energy underpins the need for efficient and reliable energy storage systems. Advanced analysis and characterization of battery materials is not only important to understand fundamental battery properties but also crucial for their continued development. A deep understanding of these systems is often difficult to obtain through only pre-and/or post-mortem analyses, with the full complexity of a battery being hidden in its operational state. Thus, we have developed an operando methodology to analyze solid-state batteries (SSBs) structurally as well as chemically before, during, and after cycling. The approach is based on a specially designed sample holder, which enables a variety of electrochemical experiments. Since the entire workflow is performed within a single focused ion beam scanning electron microscope equipped with an in-house developed magnetic sector secondary ion mass spectrometer, we are able to pause the cycling at any time, perform analysis, and then continue cycling. Microstructural analysis is performed via secondary electron imaging, and the chemical mapping is performed using the secondary ion mass spectrometer. In this proof-of-concept study, we were able to identify dendrites in a short-circuited symmetric cell and to chemically map dendritic structures. While this methodology focuses on SSBs, the approach can directly be adapted to different battery systems and beyond. Our technique clearly has an advantage over many alternatives for battery analysis as no transfer of samples between instruments is needed and a correlation between the microstructure, chemical composition, and electrochemical performance is obtained directly.

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Hydrogen trapping and embrittlement of titanium- and vanadium carbide-containing steels after high-temperature hydrogen charging

Boot,

Suresh Kumar,

Eswara

et al. 2024

J Mater Sci

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This work studies the effect of TiC and VC precipitate sizes on hydrogen trapping and embrittlement. Two experimental ferritic HSLA steels containing either TiC or VC carbides for precipitation strengthening are annealed in nitrogen and hydrogen gas. This results in a hydrogen uptake of up to 0.91 and 0.44 wppm in the TiC and VC steels, respectively. TEM and TDS analysis indicate that semi-coherent TiC particles trap hydrogen in misfit dislocations with an activation energy of 43 kJ/mol. Coherent VC particles are suggested to trap hydrogen in interface carbon vacancies, with an energy between 53 and 72 kJ/mol. Carbon vacancies are the likely trapping site in incoherent precipitates, where SIMS imaging confirms that incoherent TiC precipitates trap preferentially near the interface, whereas incoherent VC precipitates trap throughout their bulk. Neither alloy is embrittled in SSRT tests after hydrogen absorption, which shows that these precipitates can be used as both a hydrogen sink and a strengthening mechanism in steels. Graphical abstract

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Correlative high-resolution imaging of hydrogen in Mg2Ni hydrogen storage thin films

Cited by 8 publications

References 22 publications

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Secondary Ion Mass Spectral Imaging of Metals and Alloys

Toward Operando Structural, Chemical, and Electrochemical Analyses of Solid-State Batteries Using Correlative Secondary Ion Mass Spectrometry Imaging

Hydrogen trapping and embrittlement of titanium- and vanadium carbide-containing steels after high-temperature hydrogen charging

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