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Analysis of institutional authors

Orfila, MAuthorLinares, MAuthorMolina, RAuthorBotas, JaAuthorSanz, RCorresponding AuthorMarugan, JAuthor

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September 27, 2022
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Perovskite materials for hydrogen production by thermochemical water splitting

Publicated to:International Journal Of Hydrogen Energy. 41 (42): 19329-19338 - 2016-11-02 41(42), DOI: 10.1016/j.ijhydene.2016.07.041

Authors: Orfila, Maria; Linares, Maria; Molina, Raul; Angel Botas, Juan; Sanz, Raul; Marugan, Javier

Affiliations

Rey Juan Carlos Univ, ESCET, Chem & Environm Engn Grp, Tulipan S-N, Mostoles 28933, Spain - Author

Abstract

The performance of perovskites as redox materials for solar thermochemical hydrogen production and energy storage have been studied theoretically by several authors but there are only a few experimental studies about them. In this work, an evaluation of commercial perovskite materials La1-xSrxMeO3 (Me = Mn, Co and Fe) for thermochemical water splitting is presented. The studied perovskites showed suitable redox properties for energy storage in thermogravimetric analysis (TGA) in presence of air, although only the Co-perovskite material (LSC) exhibited cyclability capacity. Experiments of thermochemical water splitting revealed hydrogen production, with increasing yields for Mn-, Fe- and Co-substituted perovskites, respectively. La/Sr ratio in the range of x = 0.2 to 0.4 showed only a slight influence on the amount of hydrogen produced and on the temperature required for the processes. On the other hand, metal substitution type seems to be a critical factor for the thermal reduction of these perovskites, taking place at temperatures above 1000 degrees C for the Mn-perovskite, 800 degrees C for Co-material and 900 degrees C for Fe-material. These results experimentally demonstrate the suitability of solar hydrogen production based on La1-xSrxMeO3 thermochemical cycles. Moreover, the required temperatures for hydrogen production (230 degrees C) are lower than those commonly reported in literature for pure MenOy oxide cycles (500 degrees C), making perovskite-based cycles a promising alternative. The cyclability studies with the LSC showed a slight decrease in the hydrogen production, derived from the segregation of metallic Co during the thermochemical cycle. This study confirmed the LSC perovskite as a promising material for hydrogen production by solar-driven thermochemical water splitting, although a further insight in the optimization of the operation under consecutive cycles is necessary in order to assess the material as alternative as redox material for a full-scale application. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Keywords

Co2CyclesEnergy storageFull-scale applicationsHydrogen productionHydrogen storageManganeseManganese removal (water treatment)Metal substitutionMixed oxidesNonstoichiometryOxygen-exchangePerovskitePerovskitesReactivityRedoxSolarSolar hydrogenSolar hydrogen productionSolar power generationSolar thermo-chemical hydrogenStabilityStorageThermo-chemical water splittingThermochemical cyclesThermogravimetric analysisWater splitting

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal International Journal Of Hydrogen Energy 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, 2016, it was in position 7/29, thus managing to position itself as a Q1 (Primer Cuartil), in the category Electrochemistry.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.82. This 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:

  • Weighted Average of Normalized Impact by the Scopus agency: 2.63 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 9.43 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-16, the following number of citations:

  • WoS: 82
  • Scopus: 87

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 2025-07-16:

  • 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: 207 (PlumX).

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Orfila del Hoyo, María) and Last Author (Marugán Aguado, Ángel Javier).

the author responsible for correspondence tasks has been Sanz Martín, Raúl.