Hydrogen-storage materials dispersed into nanoporous substrates studied through incoherent inelastic neutron scattering

D. Colognesi; L. Ulivi; M. Zoppi; A. J. Ramirez-Cuesta; A. Orecchini; A. J. Karkamkar; M. Fichtner; E. Gil Bardají; Z. Zhao-Karger

doi:10.1016/j.jallcom.2012.05.081

Hydrogen-storage materials dispersed into nanoporous substrates studied through incoherent inelastic neutron scattering

D. Colognesi, L. Ulivi, M. Zoppi, A. J. Ramirez-Cuesta, A. Orecchini, A. J. Karkamkar, M. Fichtner, E. Gil Bardají, Z. Zhao-Karger

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Incoherent inelastic neutron scattering measurements on four impregnated/infiltrated composites of hydrides (namely, NaAlH ₄, NH ₃BH ₃, LiBH ₄ + Mg(BH ₄) ₂, and MgH ₂) plus nanoporous scaffolds (active carbon fibers or silica-based MCM41) have been performed at low temperature. After a careful data analysis, the present experimental results have been compared to the corresponding spectroscopic data of bulk hydrides. Evident signatures induced by infiltration process on the NaAlH ₄ phonon bands have been detected, showing up as a strong peak broadening and smoothing together with, in some cases, an energy shift. Less pronounced phonon spectrum modifications have been found in MgH ₂ and NH ₃BH ₃, mainly concentrated in the low-energy acoustic region. Finally, no relevant effect has been observed for LiBH ₄ + Mg(BH ₄) ₂.

Original language	English
Pages (from-to)	91-99
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	538
DOIs	https://doi.org/10.1016/j.jallcom.2012.05.081
State	Published - Oct 15 2012
Externally published	Yes

Funding

This work has been partially supported by the EU, seventh Framework Programme, under the project NANOHy (Novel Nanocomposites for Hydrogen Storage Applications , Contract No. 210092). The neutron activity has been partially financed by Consiglio Nazionale delle Ricerche (CNR, Italy) through agreements with STFC (UK) and ILL (France). D.C. and A.J.K. would like to acknowledge fruitful scientific discussions with Dr. Thomas S. Autrey (Pacific Northwest National Laboratory) on the ammonia borane part of this work.

Funders	Funder number
ILL
Seventh Framework Programme	210092
Science and Technology Facilities Council
European Commission
Consiglio Nazionale delle Ricerche
Seventh Framework Programme

Keywords

Hydrogen storage
Inelastic neutron scattering
Lattice dynamics
Nanomaterials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jallcom.2012.05.081

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@article{cfc370c0559d48eab2f220c8792cfbe1,

title = "Hydrogen-storage materials dispersed into nanoporous substrates studied through incoherent inelastic neutron scattering",

abstract = "Incoherent inelastic neutron scattering measurements on four impregnated/infiltrated composites of hydrides (namely, NaAlH 4, NH 3BH 3, LiBH 4 + Mg(BH 4) 2, and MgH 2) plus nanoporous scaffolds (active carbon fibers or silica-based MCM41) have been performed at low temperature. After a careful data analysis, the present experimental results have been compared to the corresponding spectroscopic data of bulk hydrides. Evident signatures induced by infiltration process on the NaAlH 4 phonon bands have been detected, showing up as a strong peak broadening and smoothing together with, in some cases, an energy shift. Less pronounced phonon spectrum modifications have been found in MgH 2 and NH 3BH 3, mainly concentrated in the low-energy acoustic region. Finally, no relevant effect has been observed for LiBH 4 + Mg(BH 4) 2.",

keywords = "Hydrogen storage, Inelastic neutron scattering, Lattice dynamics, Nanomaterials",

author = "D. Colognesi and L. Ulivi and M. Zoppi and Ramirez-Cuesta, {A. J.} and A. Orecchini and Karkamkar, {A. J.} and M. Fichtner and {Gil Bardaj{\'i}}, E. and Z. Zhao-Karger",

year = "2012",

month = oct,

day = "15",

doi = "10.1016/j.jallcom.2012.05.081",

language = "English",

volume = "538",

pages = "91--99",

journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Hydrogen-storage materials dispersed into nanoporous substrates studied through incoherent inelastic neutron scattering

AU - Colognesi, D.

AU - Ulivi, L.

AU - Zoppi, M.

AU - Ramirez-Cuesta, A. J.

AU - Orecchini, A.

AU - Karkamkar, A. J.

AU - Fichtner, M.

AU - Gil Bardají, E.

AU - Zhao-Karger, Z.

PY - 2012/10/15

Y1 - 2012/10/15

N2 - Incoherent inelastic neutron scattering measurements on four impregnated/infiltrated composites of hydrides (namely, NaAlH 4, NH 3BH 3, LiBH 4 + Mg(BH 4) 2, and MgH 2) plus nanoporous scaffolds (active carbon fibers or silica-based MCM41) have been performed at low temperature. After a careful data analysis, the present experimental results have been compared to the corresponding spectroscopic data of bulk hydrides. Evident signatures induced by infiltration process on the NaAlH 4 phonon bands have been detected, showing up as a strong peak broadening and smoothing together with, in some cases, an energy shift. Less pronounced phonon spectrum modifications have been found in MgH 2 and NH 3BH 3, mainly concentrated in the low-energy acoustic region. Finally, no relevant effect has been observed for LiBH 4 + Mg(BH 4) 2.

AB - Incoherent inelastic neutron scattering measurements on four impregnated/infiltrated composites of hydrides (namely, NaAlH 4, NH 3BH 3, LiBH 4 + Mg(BH 4) 2, and MgH 2) plus nanoporous scaffolds (active carbon fibers or silica-based MCM41) have been performed at low temperature. After a careful data analysis, the present experimental results have been compared to the corresponding spectroscopic data of bulk hydrides. Evident signatures induced by infiltration process on the NaAlH 4 phonon bands have been detected, showing up as a strong peak broadening and smoothing together with, in some cases, an energy shift. Less pronounced phonon spectrum modifications have been found in MgH 2 and NH 3BH 3, mainly concentrated in the low-energy acoustic region. Finally, no relevant effect has been observed for LiBH 4 + Mg(BH 4) 2.

KW - Hydrogen storage

KW - Inelastic neutron scattering

KW - Lattice dynamics

KW - Nanomaterials

UR - http://www.scopus.com/inward/record.url?scp=84863481367&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2012.05.081

DO - 10.1016/j.jallcom.2012.05.081

M3 - Article

AN - SCOPUS:84863481367

SN - 0925-8388

VL - 538

SP - 91

EP - 99

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Hydrogen-storage materials dispersed into nanoporous substrates studied through incoherent inelastic neutron scattering

Abstract

Funding

Keywords

UN SDGs

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