Analysis of hydrogen distribution in hydrogen storage alloy using neutron radiography

Sakaguchi, Hiroki; Satake, Yuichi; Hatakeyama, Keisuke; Fujine, Shigenori; Yoneda, Kenji; Matsubayashi, Masahito; Esaka, Takao

doi:10.1016/s0925-8388(03)00005-7

Cited by 19 publications

(10 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result should be reasonable and, on the other hand, suggest that the NCT method is valuable to investigate the ion distribution in a cross section of a given sample. Figure 14 shows the NCT images of the hydrogenated Mg3Ni ingot sample mentioned above [ 16]. From the sectional NR images denoted by "1" to "4", it is obvious that hydrogen concentration ranges uniformly near the surface "1" but obviously differs among the surface and the bulk in the other part.…”

Section: Application To Lithium Ionmentioning

confidence: 99%

“…Therefore, the hydrogen distribution can be observed by NR for the samples without a high neutron attenuation element besides hydrogen. Here, will be mentioned the results that NR is applied for the alloy system of Mg-Ni [16]. Figure 7 shows the radiographic variation of Mg3Ni against the hydrogenation time, which is compared with each photograph.…”

Section: Application To Hydrogen Storage Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of lithium and hydrogen movement in functional solid materials by neutron radiography

Esaka

2004

Ionics

View full text Add to dashboard Cite

Abstract. The principle and availability of Neutron Radiography are demonstrated. The technique is actually applied to obtain the images as to lithium in the oxide lithium ion conductors and/or hydrogen in the hydrogen storage alloys. From analysis of the lithium or hydrogen distribution, the ionic transport number and the diffusion coefficient can be calculated and the hydrogenation process is discussed. In the case imaging the special cross-section in the sample, NeutronComputed Tomography is more favorable. Here, it will be demonstrated using our actual experimental results that the NCT technique is also useful in the field of Solid State Ionics to clarify the ion distribution and movement.

show abstract

Section: Application To Lithium Ionmentioning

confidence: 99%

Section: Application To Hydrogen Storage Materialsmentioning

confidence: 99%

Analysis of lithium and hydrogen movement in functional solid materials by neutron radiography

Esaka

2004

Ionics

View full text Add to dashboard Cite

show abstract

“…The combination of the hydrogen atoms to H 2 will decrease the current efficiency if the indirect hydrogenation reaction is slow. The diffusion coefficient of hydrogen in the MH alloy ranges from 10 )7 $10 )11 cm 2 s )1 [23,24], depending on experimental methods and the alloy structures. The adsorbed hydrogen can diffuse much faster at the electrode surface than in the electrode bulk [25].…”

Section: Preparative Electrolysismentioning

confidence: 99%

Promotion of the electrochemical hydrogenation of nitrobenzene at hydrogen storage alloys studied using a solid electrolyte method

Jiang

2006

J Appl Electrochem

View full text Add to dashboard Cite

The electrocatalytic properties of an AB 5 -type hydrogen storage alloy towards the electrochemical hydrogenation of unsaturated organic compounds have been studied by a solid electrolyte method using electrochemical hydrogenation of nitrobenzene as a model reaction. Voltammetric studies reveal that the kinetics of the nitrobenzene electro-reduction on the hydrogen storage alloy electrode is similar to that on a Ni electrode. Aniline and p-aminophenol are produced as the reaction products. Compared to the Ni electrode, the production of aniline is considerably promoted on the hydrogen storage alloy electrode. Modifying the alloy surface with a thin layer of Cu enhances the reaction selectivity and current efficiency for aniline formation. Compared to a Cu electrode, the electrochemical hydrogenation of nitrobenzene to aniline is promoted on the Cu-modified alloy electrode. The hydrogenation promotion effect is attributed to the chemical reaction between nitrobenzene and metal hydrides that are electrochemically generated in situ. Hydrogen storage alloys therefore make it possible to intensify the electrochemical hydrogenation process of unsaturated organic compounds.

show abstract

“…The NR technique can be applied to the study of hydride forming materials (HFM) for hydrogen storage, as demonstrated early on by Sakaguchi et al [8,9]. They used NR to detect hydrogen in Mg 2 Ni storage alloys, following the first stages of hydride formation and quantifying the amount of hydrogen in the material.…”

Section: Introductionmentioning

confidence: 99%

Neutron radiography analysis of a hydride-based hydrogen storage system

Baruj

Borzone

Ardito

et al. 2015

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Analysis of hydrogen distribution in hydrogen storage alloy using neutron radiography

Cited by 19 publications

References 15 publications

Analysis of lithium and hydrogen movement in functional solid materials by neutron radiography

Analysis of lithium and hydrogen movement in functional solid materials by neutron radiography

Promotion of the electrochemical hydrogenation of nitrobenzene at hydrogen storage alloys studied using a solid electrolyte method

Neutron radiography analysis of a hydride-based hydrogen storage system

Contact Info

Product

Resources

About