dc.creatorMorales Santelices, Joaquín Ignacio
dc.creatorColet Lagrille, Melanie
dc.creatorGarcía García, M.
dc.date.accessioned2019-01-04T20:18:39Z
dc.date.available2019-01-04T20:18:39Z
dc.date.created2019-01-04T20:18:39Z
dc.date.issued2018
dc.identifierJournal of The Electrochemical Society, 165 (9) D344-D353 (2018)
dc.identifier10.1149/2.0191809jes
dc.identifierhttps://repositorio.uchile.cl/handle/2250/159275
dc.description.abstractA speciation model is proposed for the determination of the concentration of different species formed in an aqueous solution containing Mo(VI), Ni(II), citrate, ammonia and sulfate at 298 K, 10(5) Pa and variable pH and Mo(VI)/Ni(II) activity ratios. This solution is to be used as electrolyte in the electrodeposition process of thin films of Mo and Ni oxides, which appear to be a promising material for the fabrication of photo-anodes for water splitting in photo-electrochemical cells. The speciation model comprises 53 species and their stability constants, which are related through molar and charge balances to estimate the composition of the solution given a pH value and formal concentrations. As a result, predominance and distribution diagrams are produced, based on which electrolyte conditions (pH and central species concentrations) are recommended to maximize the availability of desired species for the electrodeposition process. Eh-pH diagrams for molybdenum and nickel species at the recommended activities (10(-2) for Mo and Ni species, and 10(-1) for citrate, ammonia and sulfate species) are also produced, to determine the adequate potential range to be applied for the electrodeposition of Mo and Ni oxides films. (C) 2018 The Electrochemical Society.
dc.languageen
dc.publisherElectrochemical Soc Inc
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
dc.sourceJournal of the Electrochemical Society
dc.subjectComplex-formation
dc.subjectCitrate bath
dc.subjectThin-films
dc.subjectEquilibria
dc.subjectMoo2
dc.subjectBatteries
dc.subjectMechanism
dc.subjectSpectra
dc.subjectCobalt
dc.subjectWater
dc.titleSpeciation model of the Mo(VI)-Ni(II)-Citrate-S(VI)-N(III) aqueous system for the study of the electrodeposition of molybdenum and nickel oxides films
dc.typeArtículo de revista


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