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Fernandez Rios, Jose FcoAuthorAres JrAuthor

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September 22, 2015
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Tribochemical decomposition of light ionic hydrides at room temperature

Publicated to:Journal of Physical Chemistry Letters. 6 (14): 2780-2785 - 2015-07-16 6(14), DOI: 10.1021/acs.jpclett.5b00998

Authors: Nevshupa R., Ares J.R., Fernández J.F., Del Campo A., Roman E.

Affiliations

Department of Physics of Materials, Autónoma University of Madrid, Madrid, Spain - Author
Spanish National Research Council, Institute Eduardo Torroja (IETCC-CSIC), C/Serrano Galvache 4, Madrid, Spain - Author
Spanish National Research Council, Institute of Ceramic and Glass (ICV-CSIC), C/Kelsen 5, Madrid, Spain - Author
Spanish National Research Council, Institute of Material Science of Madrid (ICMM-CSIC), C/Sor Juana Inés de la Cruz 3, Madrid, Spain - Author

Abstract

Tribochemical decomposition of magnesium hydride (MgH2) induced by deformation at room temperature was studied on a micrometric scale, in situ and in real time. During deformation, a near-full depletion of hydrogen in the micrometric affected zone is observed through an instantaneous (t < 1 s) and huge release of hydrogen (3-50 nmol/s). H release is related to a nonthermal decomposition process. After deformation, the remaining hydride is thermally decomposed at room temperature, exhibiting a much slower rate than during deformation. Confocal-microRaman spectroscopy of the mechanically affected zone was used to characterize the decomposition products. Decomposition was enhanced through the formation of the distorted structure of MgH2 with reduced crystal size by mechanical deformation.

Keywords

hydrogen kineticsmagnesium hydridemicro-ramanConfocal micro-ramanCrystal structureDecomposition processDecomposition productsDeformationHydridesHydrogen kineticsMagnesiumMagnesium hydrideMechanical deformationMicro-ramanMicrodeformationMicrodeformations

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal of Physical Chemistry Letters due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2015, it was in position 1/35, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Atomic, Molecular & Chemical.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.09, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 2.03 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-18, the following number of citations:

  • WoS: 14
  • Scopus: 13

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-18:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 18.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 18 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 2.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 3 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.