In situ X-ray powder diffraction studies of hydrogen storage and release in the Li-N-H system

Joshua W. Makepeace; Martin O. Jones; Samantha K. Callear; Peter P. Edwards; William I. F. David

doi:10.1039/c4cp00087k

In situ X-ray powder diffraction studies of hydrogen storage and release in the Li-N-H system

Joshua W. Makepeace, Martin O. Jones, Samantha K. Callear, Peter P. Edwards, William I. F. David^*

^*Corresponding author for this work

School of Chemistry

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

30 Citations (Scopus)

Abstract

We report the experimental investigation of hydrogen storage and release in the lithium amide-lithium hydride composite (Li-N-H) system. Investigation of hydrogenation and dehydrogenation reactions of the system through in situ synchrotron X-ray powder diffraction experiments allowed for the observation of the formation and evolution of non-stoichiometric intermediate species of the form Li1+xNH2-x. This result is consistent with the proposed Frenkel-defect mechanism for these reactions. We observed capacity loss with decreasing temperature through decreased levels of lithium-rich (0.7

Original language	English
Pages (from-to)	4061-4070
Number of pages	10
Journal	Physical Chemistry Chemical Physics
Volume	16
Issue number	9
DOIs	https://doi.org/10.1039/c4cp00087k
Publication status	Published - 2014

Keywords

LITHIUM AMIDE
NEUTRON-DIFFRACTION
MECHANISM
HYDRIDE
DECOMPOSITION
DESORPTION
NITROGEN
NITRIDE
IMIDES

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title = "In situ X-ray powder diffraction studies of hydrogen storage and release in the Li-N-H system",

abstract = "We report the experimental investigation of hydrogen storage and release in the lithium amide-lithium hydride composite (Li-N-H) system. Investigation of hydrogenation and dehydrogenation reactions of the system through in situ synchrotron X-ray powder diffraction experiments allowed for the observation of the formation and evolution of non-stoichiometric intermediate species of the form Li1+xNH2-x. This result is consistent with the proposed Frenkel-defect mechanism for these reactions. We observed capacity loss with decreasing temperature through decreased levels of lithium-rich (0.7",

keywords = "LITHIUM AMIDE, NEUTRON-DIFFRACTION, MECHANISM, HYDRIDE, DECOMPOSITION, DESORPTION, NITROGEN, NITRIDE, IMIDES",

author = "Makepeace, {Joshua W.} and Jones, {Martin O.} and Callear, {Samantha K.} and Edwards, {Peter P.} and David, {William I. F.}",

year = "2014",

doi = "10.1039/c4cp00087k",

language = "English",

volume = "16",

pages = "4061--4070",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "ROYAL SOC CHEMISTRY",

number = "9",

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TY - JOUR

T1 - In situ X-ray powder diffraction studies of hydrogen storage and release in the Li-N-H system

AU - Makepeace, Joshua W.

AU - Jones, Martin O.

AU - Callear, Samantha K.

AU - Edwards, Peter P.

AU - David, William I. F.

PY - 2014

Y1 - 2014

N2 - We report the experimental investigation of hydrogen storage and release in the lithium amide-lithium hydride composite (Li-N-H) system. Investigation of hydrogenation and dehydrogenation reactions of the system through in situ synchrotron X-ray powder diffraction experiments allowed for the observation of the formation and evolution of non-stoichiometric intermediate species of the form Li1+xNH2-x. This result is consistent with the proposed Frenkel-defect mechanism for these reactions. We observed capacity loss with decreasing temperature through decreased levels of lithium-rich (0.7

AB - We report the experimental investigation of hydrogen storage and release in the lithium amide-lithium hydride composite (Li-N-H) system. Investigation of hydrogenation and dehydrogenation reactions of the system through in situ synchrotron X-ray powder diffraction experiments allowed for the observation of the formation and evolution of non-stoichiometric intermediate species of the form Li1+xNH2-x. This result is consistent with the proposed Frenkel-defect mechanism for these reactions. We observed capacity loss with decreasing temperature through decreased levels of lithium-rich (0.7

KW - LITHIUM AMIDE

KW - NEUTRON-DIFFRACTION

KW - MECHANISM

KW - HYDRIDE

KW - DECOMPOSITION

KW - DESORPTION

KW - NITROGEN

KW - NITRIDE

KW - IMIDES

U2 - 10.1039/c4cp00087k

DO - 10.1039/c4cp00087k

M3 - Article

SN - 1463-9076

VL - 16

SP - 4061

EP - 4070

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 9

ER -

In situ X-ray powder diffraction studies of hydrogen storage and release in the Li-N-H system

Abstract

Keywords

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