Asymmetric hybrid capacitors based on activated carbon and activated carbon fibre–PANI electrodes

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dc.contributorMateriales Carbonosos y Medio Ambientees
dc.contributorElectrocatálisis y Electroquímica de Polímeroses
dc.contributor.authorSalinas Torres, David-
dc.contributor.authorSieben, Juan Manuel-
dc.contributor.authorLozano Castelló, Dolores-
dc.contributor.authorCazorla-Amorós, Diego-
dc.contributor.authorMorallon, Emilia-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Inorgánicaes
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Materialeses
dc.identifier.citationElectrochimica Acta. 2013, 89: 326-333. doi:10.1016/j.electacta.2012.11.039es
dc.identifier.issn1873-3859 (Online)-
dc.description.abstractComposites consisting of polyaniline (PANI) coatings inside the microporosity of an activated carbon fibre (ACF) were prepared by electrochemical and chemical methods. Electrochemical characterization of both composites points out that the electrodes with polyaniline show a higher capacitance than the pristine porous carbon electrode. These materials have been used to develop an asymmetric capacitor based on activated carbon (AC) as negative electrode and an ACF–PANI composite as positive electrode in H2SO4 solution as electrolyte. The presence of a thin layer of polyaniline inside the porosity of the activated carbon fibres avoids the oxidation of the carbon material and the oxygen evolution reaction is produced at more positive potentials. This capacitor was tested in a maximum cell voltage of 1.6 V and exhibited high energy densities, calculated for the unpackaged active materials, with values of 20 W h kg−1 and power densities of 2.1 kW kg−1 with excellent cycle lifetime (90% during the first 1000 cycles) and high coulombic
dc.description.sponsorshipFinancial support by the Ministerio de Ciencia e Innovación (MAT2010-15273 and CTQ2009-10813) and Generalitat Valenciana and FEDER (PROMETEO/2009/047 and ACOMP/2012/133) projects are gratefully acknowledged. J.M.S. thanks Ministerio de Educación (SB2010-132). D.S.T. thanks Ministerio de Ciencia e Innovación (BES-2010-035238).es
dc.subjectAsymmetric supercapacitorses
dc.subjectActivated carbones
dc.subjectActivated carbon fibreses
dc.subject.otherQuímica Inorgánicaes
dc.subject.otherQuímica Físicaes
dc.titleAsymmetric hybrid capacitors based on activated carbon and activated carbon fibre–PANI electrodeses
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