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dc.contributor.authorBarranco, Violeta-
dc.contributor.authorLillo-Rodenas, M. A.-
dc.contributor.authorLinares-Solano, A.-
dc.contributor.authorOya, A.-
dc.contributor.authorPico, F.-
dc.contributor.authorIbáñez, Joaquín-
dc.contributor.authorAgulló Rueda, F.-
dc.contributor.authorAmarilla, José Manuel-
dc.contributor.authorRojo, J. M.-
dc.identifier.citationJournal of Physical Chemistry C 114 : 10302–10307 (2010)es_ES
dc.description.abstractCarbon nanofibers (CNFs) show a high electrical conductivity but a reduced specific surface area that limits their use as electrode materials for supercapacitors. In this work, amorphous CNFs, with a relatively high electrical conductivity are easily activated in KOH, using certain KOH/CNF weight ratios. Activation does not produce any important change in the shape, surface roughness, diameter, graphene sheet size, and electrical conductivity of starting nanofibers. However, activation leads to new micropores and larger surface areas as well as a higher content of basic oxygen groups. They clearly enhanced the specific capacitance, attaining values higher than those reported for other activated CNFs. In this study, the effects of micropore size and oxygen content on the specific capacitance are discussed for three electrolytes: H2SO4, KOH, and (CH3CH2)4NBF4. Moreover, a good cycle life is found for the most activated CNFs.es_ES
dc.description.sponsorshipAcknowledgment. Financial support through the project of reference MAT 2008-03182 is gratefully acknowledged. V.B. thanks the Spanish Ministry of Science and Innovation for a RyC contract. F.P. thanks CSIC for a JAE doc contractes_ES
dc.publisherAmerican Chemical Societyes_ES
dc.subjectCarbon Nanofiberses_ES
dc.subjectsupercapacitor electrodees_ES
dc.titleAmorphous Carbon Nanofibers and Their Activated Carbon Nanofibers as Supercapacitor Electrodeses_ES
dc.description.peerreviewedPeer reviewedes_ES
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