The relation between structural features and electrochemical activity of MnO2 nanoparticles synthesized from a polyol-made Mn 3O4 precursor

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDias, Cristiane de A.
dc.creatorSantana, Henrique de
dc.creatorNobre, Marcos Augusto Lima
dc.creatorLopes, Mauro C.
dc.date2014-05-27T11:29:48Z
dc.date2016-10-25T18:50:15Z
dc.date2014-05-27T11:29:48Z
dc.date2016-10-25T18:50:15Z
dc.date2013-07-01
dc.date.accessioned2017-04-06T02:28:22Z
dc.date.available2017-04-06T02:28:22Z
dc.identifierJournal of Solid State Electrochemistry, v. 17, n. 7, p. 1967-1976, 2013.
dc.identifier1432-8488
dc.identifierhttp://hdl.handle.net/11449/75740
dc.identifierhttp://acervodigital.unesp.br/handle/11449/75740
dc.identifier10.1007/s10008-013-2043-1
dc.identifierWOS:000320888800021
dc.identifier2-s2.0-84879845344
dc.identifier0000-0003-4843-3975
dc.identifierhttp://dx.doi.org/10.1007/s10008-013-2043-1
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896474
dc.descriptionA simple hybrid synthesis processing method was developed to synthesize γ-MnO2 nanocrystalline particles. The polyol method was modified by the addition of nitric acid in order to allow the synthesizing of single-phase Mn3O4 in a large scale. In the sequence, the acid digestion technique was used to transform Mn3O4 into γ-MnO2. Structural and morphological characterization was carried out by X-ray diffractometry, Infrared and Raman spectroscopy, thermogravimetric analysis, nitrogen adsorption isotherm, scanning electron microscopy, and transmission electron microscopy. The electrochemical properties were investigated by cyclic voltammetry and galvanostatic charge-discharge measurements. The synthesized material exhibits a specific capacitance of 125.1 F g-1 at a mass loading of 0.98 mg cm-2. The relation between structural features and electrochemical activity is discussed by comparing the synthesized material with commercial electrolytic manganese dioxide. © 2013 Springer-Verlag Berlin Heidelberg.
dc.languageeng
dc.relationJournal of Solid State Electrochemistry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDe Wolff disorder
dc.subjectMicrotwinning
dc.subjectPseudocapacitance
dc.subjectSupercapacitors
dc.subjectElectrolytic manganese dioxides
dc.subjectGalvanostatic charge discharges
dc.subjectInfrared and Raman spectroscopy
dc.subjectMorphological characterization
dc.subjectSuper capacitor
dc.subjectAlcohols
dc.subjectCyclic voltammetry
dc.subjectManganese
dc.subjectManganese oxide
dc.subjectScanning electron microscopy
dc.subjectThermogravimetric analysis
dc.subjectTransmission electron microscopy
dc.subjectX ray diffraction analysis
dc.subjectSynthesis (chemical)
dc.titleThe relation between structural features and electrochemical activity of MnO2 nanoparticles synthesized from a polyol-made Mn 3O4 precursor
dc.typeOtro


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