In-situ diffraction techniques for studying hydrogen storage materials under high hydrogen pressure

Gray, Evan; Webb, C. J.

doi:10.1016/j.ijhydene.2012.03.051

Cited by 17 publications

(4 citation statements)

References 17 publications

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“…Since its beginning some 35 years ago (Pannetier, 1986), it has gained considerable momentum mainly due to the advent of dedicated high-flux neutron diffractometers. The basics on the method, sample environment and application examples can be found in recent reviews (Isnard, 2007;Gray & Webb, 2012;Hansen & Kohlmann, 2014;Peterson et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Such studies are of fundamental importance in very different areas of solid-state research, from geochemistry through materials science to physics and chemistry. Examples are phase formation under high pressures in the Earth's mantle and core; the use and wear of functional materials in rechargeable batteries, hydrogen storage or thermoelectric materials; and the exploration of reaction pathways in chemical syntheses and industrial processes (Isnard, 2007;Yartys et al, 2010;Gray & Webb, 2012;Yang et al, 2016;Peterson et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Design and use of a sapphire single-crystal gas-pressure cell forin situneutron powder diffraction

et al. 2021

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A sapphire single-crystal gas-pressure cell without external support allowing unobstructed optical access by neutrons has been developed and optimized for elastic in situ neutron powder diffraction using hydrogen (deuterium) gas at the high-intensity two-axis diffractometer D20 at the Institut Laue-Langevin (Grenoble, France). Given a proper orientation of the single-crystal sample holder with respect to the detector, parasitic reflections from the sample holder can be avoided and the background can be kept low. Hydrogen (deuterium) gas pressures of up to 16.0 MPa at 298 K and 8.0 MPa at 655 K were tested successfully for a wall thickness of 3 mm. Heating was achieved by a two-sided laser heating system. The typical time resolution of in situ investigations of the reaction pathway of hydrogen (deuterium) uptake or release is on the order of 1 min. Detailed descriptions of all parts of the sapphire single-crystal gas-pressure cell are given, including materials information, technical drawings and instructions for use.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and use of a sapphire single-crystal gas-pressure cell forin situneutron powder diffraction

et al. 2021

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“…The compressor provides easy and safe operation and is used for the high-pressure experiments including in-situ synchrotron X-rays diffraction. 83 Modular design is an intrinsic feature of MH compressors made as assemblies of plurality of MH containers which provide hydrogen compression. This feature brings design flexibility and, in turn, possibility to optimise their layout in correspondence with features of a consumer installation.…”

Section: Technology Development and Implementation: Achievements And ...mentioning

confidence: 99%

Thermally driven hydrogen compression using metal hydrides

Lototskyy

Linkov

2022

Intl J of Energy Research

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Summary Hydrogen compression is a major contributor to capital costs and maintenance hours in the infrastructure related to storage, distribution and end‐use of hydrogen. Conventionally used mechanical hydrogen compressors have a number of disadvantages including a complicated design, insufficient reliability, high operating costs, a probability of hydrogen leakage and hydrogen contamination. A promising alternative is a thermally driven metal hydride hydrogen compressor (MHHC) whose operation is based on the reversible interaction of hydride‐forming alloys with hydrogen gas. MHHCs have a number of advantages including practically unlimited (up to several kbars) discharge pressure, good scalability (from several normal litres to tens normal cubic metres of hydrogen per an hour), modular design, simplicity in service and operation, as well as high purity of the delivered hydrogen and a possibility to use low‐grade heat. MHHC does not contain moving parts that simplifies its design, increases reliability, and eliminates noise and vibration. This article overviews applied R&D activities related to the thermally driven hydrogen compression using metal hydrides. The focus is put on the interrelation between properties of metal hydride materials and their hydrogen compression performances, first of all, operating pressure ‐ temperature range, process productivity, and efficiency. Typical design features of the hydrogen compression systems and ways of their optimization are considered. A brief techno‐economic analysis of the MHHCs benchmarked against alternative hydrogen compression technologies (mechanical and electrochemical) is presented as well. Finally, promising application niches of the MHHCs are outlined.

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“…The bursting pressure for a pressure cell made completely from beryllium was determined to be 34.5 MPa (Huo et al, 2005). A very comprehensive overview on different in situ cells available for diffraction experiments under high hydrogen pressures is provided by Gray & Webb (2012).…”

Section: Introductionmentioning

confidence: 99%

Anin situpowder diffraction cell for high-pressure hydrogenation experiments using laboratory X-ray diffractometers

et al. 2015

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An in situ diffraction cell is presented which has been designed and constructed for in‐house powder diffraction experiments under high gas pressures up to 30 MPa. For a proof of principle, the in situ cell has been tested for several hydrogenation experiments under elevated pressures and temperatures. LaNi5 was chosen as an example for hydrogenation, applying simultaneously 5.5 MPa H2 pressure at a temperature of 423 K. For testing the high‐pressure–temperature suitability of the in situ cell, pressure–temperature experiments up to 14 MPa at 373 K were performed, studying the rehydrogenation of NaH and Al to NaAlH4. The experimental setup enables recording of in situ X‐ray diffraction data on laboratory instruments with short data acquisition times at elevated hydrogen pressures and temperatures.

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In-situ diffraction techniques for studying hydrogen storage materials under high hydrogen pressure

Cited by 17 publications

References 17 publications

Design and use of a sapphire single-crystal gas-pressure cell forin situneutron powder diffraction

Design and use of a sapphire single-crystal gas-pressure cell forin situneutron powder diffraction

Thermally driven hydrogen compression using metal hydrides

Anin situpowder diffraction cell for high-pressure hydrogenation experiments using laboratory X-ray diffractometers

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