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Combined x-ray photoelectron spectroscopy and scanning electron microscopy studies of the reactive hydride composite with and without a Ti-based additive
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10.1063/1.3525803
/content/aip/journal/jap/109/1/10.1063/1.3525803
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/1/10.1063/1.3525803

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of and Ti-iso after ball milling (a), after desorption (b), and one cycle (c). Peaks of references are indexed above: tetragonal , orthorhombic , cubic MgO, hexagonal , and cubic LiH.

Image of FIG. 2.
FIG. 2.

, , , and photoemission spectra for references samples: LiH, , , , , and .

Image of FIG. 3.
FIG. 3.

and photoemission peaks for after ball milling , desorption , and one cycle and for Ti-iso after ball milling , desorption and one cycle . and photoemission peaks for Ti-iso for the three sorption stages after one hour sputtering (, , and ).

Image of FIG. 4.
FIG. 4.

TEM micrographs and EDX spectra from representative areas (as indicated by the arrows) for the following milled samples: (a) and (b) Ti-iso .

Image of FIG. 5.
FIG. 5.

photoemission peaks for after ball milling , desorption , and one cycle and for Ti-iso after ball milling , desorption and one cycle . photoemission peaks for Ti-iso for the three sorption stages after one hour sputtering (, , and ).

Image of FIG. 6.
FIG. 6.

photoemission peaks for Ti-iso after ball milling , desorption and one cycle and for the same samples after one hour sputtering (, , and )

Image of FIG. 7.
FIG. 7.

Atomic composition for after ball milling , desorption and one cycle and for Ti-iso after ball milling , desorption and one cycle .

Image of FIG. 8.
FIG. 8.

SEM micrographs of after ball milling. Up-left: image at 2 kV. Up-middle: image at 5 kV. Up-right: elemental mapping of B (red), Mg (blue), O (green), and secondary electrons (white). Individual distributions of each element in the sample are presented in the bottom.

Image of FIG. 9.
FIG. 9.

SEM micrographs of Ti-iso after ball milling. Up-left: image at 2 kV. Up-middle: image at 5 kV. Up-right: elemental mapping of B (red), Mg (blue), Ti (turquoise), O (green), and secondary electrons at 5 kV. Individual distributions of each element in the sample are presented in the bottom.

Image of FIG. 10.
FIG. 10.

SEM micrographs of after desorption. Up-left: image at 2 kV. Bottom: elemental individual distribution of B (red), Mg (yellow) and O (turquoise) in the selected green area.

Image of FIG. 11.
FIG. 11.

SEM micrograph of Ti-iso after desorption. Up-left: image at 5 kV. Up-right: elemental individual distribution of Ti (blue) in the selected green area. Bottom: elemental individual distribution of B (red), Mg (yellow) and O (turquoise) in the selected green area.

Image of FIG. 12.
FIG. 12.

SEM micrographs of after one cycle. Up-left: image at 2 kV. Up-middle: image at 5 kV. Up-right: elemental mapping of B (red), Mg (blue), O (green), and secondary electrons (white). Individual distributions of each element in the sample are presented in the bottom.

Image of FIG. 13.
FIG. 13.

SEM micrographs of Ti-iso after one cycle. Up-left: image at 2 kV. Up-middle: image at 5 kV. Up-right: elemental mapping of B (red), Mg (blue), Ti (turquoise), O (green), and secondary electrons (white). Individual distributions of each element in the sample are presented in the bottom.

Tables

Generic image for table
Table I.

Summary of investigated samples and labels.

Generic image for table
Table II.

Summary of XPS core level binding energies (Li 1s, B 1s, Mg 2p) and Auger electron kinetic energy (Mg KLL) for the reference samples MgB2, MgH2, LiBh4 and LiH with indication of the corresponding chemical species.

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/content/aip/journal/jap/109/1/10.1063/1.3525803
2011-01-10
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Combined x-ray photoelectron spectroscopy and scanning electron microscopy studies of the LiBH4–MgH2 reactive hydride composite with and without a Ti-based additive
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/1/10.1063/1.3525803
10.1063/1.3525803
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