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Analysis of institutional authors

Orfila MAuthorLinares MCorresponding AuthorPérez AAuthorMolina RAuthorMarugán JAuthorBotas JaAuthorSanz RAuthor
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Experimental evaluation and energy analysis of a two-step water splitting thermochemical cycle for solar hydrogen production based on La0.8Sr0.2CoO3-? perovskite

Publicated to:International Journal Of Hydrogen Energy. 47 (97): 41209-41222 - 2022-12-15 47(97), DOI: 10.1016/j.ijhydene.2022.03.077

Authors: Orfila, M; Linares, M; Perez, A; Barras-Garcia, I; Molina, R; Marugan, J; Botas, J A; Sanz, R

Affiliations

Chemical and Environmental Technology Department, Rey Juan Carlos University, C/ Tulipán, s/n, Móstoles, 28933, Spain - Author
Chemical, Energy and Mechanical Technology Department, Rey Juan Carlos University, C/ Tulipán, s/n, Móstoles, 28933, Spain - Author
Rey Juan Carlos Univ, Chem & Environm Technol Dept, C Tulipan S-N, Mostoles 28933, Spain - Author
Rey Juan Carlos Univ, Chem Energy & Mech Technol Dept, C Tulipan S-N, Mostoles 28933, Spain - Author

Abstract

A study of the hydrogen production by thermochemical water splitting with a commercial perovskite La0.8Sr0.2CoO3-?(denoted as LSC) under different temperature conditions is presented. The experiments revealed that high operational temperatures for the thermal reduction step (>1000 °C) implied a decrease in the hydrogen production with each consecutive cycle due to the formation of segregated phases of Co3O4. On the other hand, the experiments at lower thermal reduction operational temperatures indicated that the material had a stable behaviour with a hydrogen production of 15.8 cm3 STP/gmaterial·cycle during 20 consecutive cycles at 1000 °C, being negligible at 800 °C. This results comparable or even higher than the maximum values reported in literature for other perovskites (9.80–10.50 STP/gmaterial·cycle), but at considerable lower temperatures in the reduction step of the thermochemical cycle for the water splitting (1000 vs 1300–1400 °C). The LSC keeps the perovskite type structure after each thermochemical cycle, ensuring a stable and constant H2 production. An energy and exergy evaluation of the cycle led to values of solar to fuel efficiency and exergy efficiency of 0.67 and 0.36 (as a percentage of 1), respectively, which are higher than those reported for other metal oxides redox pairs commonly found in the literature, being the reduction temperature remarkably lower. These facts point out to the LSC perovskite as a promising material for full-scale applications of solar hydrogen production with good cyclability and compatible with current concentrating solar power technology. © 2022 The Author(s)

Keywords
ceriaexergy analysish2operovskitethermochemical water splittingthermodynamic analysisA-stableEfficiencyExergyExergy analysisExperimental evaluationHydrogen productionLanthanum compoundsMaterial cycleOperational temperaturePerovskiteSolar energySolar hydrogen productionSolar power generationStrontium compoundsTemperatureThermal reductionThermo-chemical water splittingThermoanalysisThermochemical cyclesThermochemical water splittingThermodynamic analysis

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, 2022, it was in position 7/30, 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: 2.03. 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: 2.54 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 3.05 (source consulted: Dimensions Apr 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-04-26, the following number of citations:

  • WoS: 14
  • Scopus: 18
  • OpenCitations: 15
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 2025-04-26:

  • 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: 50 (PlumX).

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.
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 (Sanz Martín, Raúl).

the author responsible for correspondence tasks has been Linares Serrano, María.