Microstructural characteristics and electrochemical behavior of Co3O4 sintered electrodes

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSilva, G. C.
dc.creatorCodaro, E.
dc.creatorPaiva Santos, C. O.
dc.creatorFugivara, Cecilio Sadao
dc.creatorSumodjo, P. T A
dc.creatorBenedetti, Assis Vicente
dc.date2014-05-27T11:20:13Z
dc.date2016-10-25T18:16:53Z
dc.date2014-05-27T11:20:13Z
dc.date2016-10-25T18:16:53Z
dc.date2001-01-01
dc.date.accessioned2017-04-06T00:58:58Z
dc.date.available2017-04-06T00:58:58Z
dc.identifierKey Engineering Materials, v. 189-191, p. 388-393.
dc.identifier1013-9826
dc.identifierhttp://hdl.handle.net/11449/66437
dc.identifierhttp://acervodigital.unesp.br/handle/11449/66437
dc.identifier10.4028/www.scientific.net/KEM.189-191.388
dc.identifierWOS:000168303300061
dc.identifier2-s2.0-17144432981
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/KEM.189-191.388
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/888008
dc.descriptionCo3O4 can be used as electrocatalyst for oxygen evolution reaction. The macro and microstructure of the oxide, obtained by compacting and sintering lithium-doped Co3O4 powder in atmosphere of dry air and in conditions of controlled temperature and time was analyzed by metallographic techniques. The porous material was characterized by XRD, SEM and EDS combined techniques. For working temperatures up to 1200°C, the pellet was consituted of particles with varying sizes over a wide range of particle size and, at higher temperatures CoO is formed and polymorphic transformation was observed. The materials were also characterized electrochemically in alkaline media by open circuit potential and potentiodynamic I/E measurements. The results were compared to those previously prepared by others by thermal deposition.
dc.languageeng
dc.relationKey Engineering Materials
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCompaction
dc.subjectElectrochemistry
dc.subjectEnergy dispersive spectroscopy
dc.subjectMetallographic microstructure
dc.subjectParticle size analysis
dc.subjectPhase transitions
dc.subjectPorous materials
dc.subjectPowder metals
dc.subjectScanning electron microscopy
dc.subjectSintering
dc.subjectThermal effects
dc.subjectX ray powder diffraction
dc.subjectCobalt oxide electrodes
dc.subjectElectrocatalyst
dc.subjectPolymorphic transformation
dc.subjectThermal deposition
dc.subjectCobalt alloys
dc.titleMicrostructural characteristics and electrochemical behavior of Co3O4 sintered electrodes
dc.typeOtro


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