Infrared emission imaging as a tool for characterization of hydrogen storage materials

Oguchi, Hiroyuki; Heilweil, Edwin J.; Josell, Daniel; Bendersky, Leonid A.

doi:10.1016/j.jallcom.2008.10.053

Cited by 20 publications

(23 citation statements)

References 53 publications

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“…In a subsequent study, IR emissivity mapping was used in tandem with TEM to study hydrogenation in Mg-Ni libraries. 319 They found that over a broad range of Ni concentrations, a Ni stabilized fcc Mg phase coexisted with precipitates of Mg 2 Ni and MgNi 2 , which resulted in an increased hydrogenation pressure. It was further demonstrated that this technique could be used to monitor metal to semiconductor, as well as metal to metal transformations; this finding is important since many hydrogen storage materials can exhibit multiple decomposition steps, and not all of the products are insulating.…”

Section: Thin Film Combinatorial Workmentioning

confidence: 99%

Applications of high throughput (combinatorial) methodologies to electronic, magnetic, optical, and energy-related materials

Green

Takeuchi

Hattrick‐Simpers

2013

Journal of Applied Physics

227

189

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High throughput (combinatorial) materials science methodology is a relatively new research paradigm that offers the promise of rapid and efficient materials screening, optimization, and discovery. The paradigm started in the pharmaceutical industry but was rapidly adopted to accelerate materials research in a wide variety of areas. High throughput experiments are characterized by synthesis of a "library" sample that contains the materials variation of interest (typically composition), and rapid and localized measurement schemes that result in massive data sets. Because the data are collected at the same time on the same "library" sample, they can be highly uniform with respect to fixed processing parameters. This article critically reviews the literature pertaining to applications of combinatorial materials science for electronic, magnetic, optical, and energy-related materials. It is expected that high throughput methodologies will facilitate commercialization of novel materials for these critically important applications. Despite the overwhelming evidence presented in this paper that high throughput studies can effectively inform commercial practice, in our perception, it remains an underutilized research and development tool. Part of this perception may be due to the inaccessibility of proprietary industrial research and development practices, but clearly the initial cost and availability of high throughput laboratory equipment plays a role. Combinatorial materials science has traditionally been focused on materials discovery, screening, and optimization to combat the extremely high cost and long development times for new materials and their introduction into commerce. Going forward, combinatorial materials science will also be driven by other needs such as materials substitution and experimental verification of materials properties predicted by modeling and simulation, which have recently received much attention with the advent of the Materials Genome Initiative. Thus, the challenge for combinatorial methodology will be the effective coupling of synthesis, characterization and theory, and the ability to rapidly manage large amounts of data in a variety of formats. V C 2013 AIP Publishing LLC. [http://dx

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Section: Thin Film Combinatorial Workmentioning

confidence: 99%

Applications of high throughput (combinatorial) methodologies to electronic, magnetic, optical, and energy-related materials

Green

Takeuchi

Hattrick‐Simpers

2013

Journal of Applied Physics

227

189

View full text Add to dashboard Cite

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“…These figures provide an estimation of the pressures and the rates at which hydrogen is absorbed/desorbed as a function of composition and temperature. One can see, for instance, that as the Ni content is increased to x ≈ 0.3, the pressure required for the initial hydrogenation of the films increases from less than 1 bar to greater than 3 bars, and the film begins to release hydrogen at lower temperatures, possibly indicating the formation of the complex hydride Mg 2 NiH 4 [9].…”

Section: Nire Measurements Of Composition-spread Samplesmentioning

confidence: 99%

“…In the thin-film community, where quantitative measurements of the hydrogen content in combinatorial samples are not possible, most work has focused on the physical vapor deposition of composition-spread samples and primary screening of the thermodynamics and kinetics of hydrogen storage properties through measurements of secondary properties associated with hydrogenation. Rapid screening measurements for thin films have been demonstrated including measurements of film transparency, the stress of MEMS bimorphs, normalized IR emissivity (NIRE) and ex situ XRD studies [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Although significant efforts have been made to increase the throughput of both bulk and thin-film studies, a number of problems remain [4][5][6][7][8][9][10]. In the case of bulk studies the large cost associated with designing and automating the ball milling and PCT systems leads to limited sampling of composition-processing space and thus reduced throughput.…”

Section: Introductionmentioning

confidence: 99%

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A combinatorial characterization scheme for high-throughput investigations of hydrogen storage materials

Hattrick‐Simpers

Tan

Oguchi

et al. 2011

Science and Technology of Advanced Materials

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In order to increase measurement throughput, a characterization scheme has been developed that accurately measures the hydrogen storage properties of materials in quantities ranging from 10 ng to 1 g. Initial identification of promising materials is realized by rapidly screening thin-film composition spread and thickness wedge samples using normalized IR emissivity imaging. The hydrogen storage properties of promising samples are confirmed through measurements on single-composition films with high-sensitivity (resolution <0.3 µg) Sievert's-type apparatus. For selected samples, larger quantities of up to ∼100 mg may be prepared and their (de)hydrogenation and micro-structural properties probed via parallel in situ Raman spectroscopy. Final confirmation of the hydrogen storage properties is obtained on ∼1 g powder samples using a combined Raman spectroscopy/Sievert's apparatus.

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“…The XRD patterns of the as-deposited MgNi films show an amorphous structure. Recent TEM studies of the ''X-ray amorphous'' films show that they consist of nanoscale grains of a metastable fcc phase [5].…”

Section: Experimental Techniquementioning

confidence: 99%

Structure transformations and hydrogen storage properties of co-sputtered MgNi films

Wirth

Milčius

Lelis

et al. 2009

Applied Surface Science

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Infrared emission imaging as a tool for characterization of hydrogen storage materials

Cited by 20 publications

References 53 publications

Applications of high throughput (combinatorial) methodologies to electronic, magnetic, optical, and energy-related materials

Applications of high throughput (combinatorial) methodologies to electronic, magnetic, optical, and energy-related materials

A combinatorial characterization scheme for high-throughput investigations of hydrogen storage materials

Structure transformations and hydrogen storage properties of co-sputtered MgNi films

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