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dc.contributor.authorMoyano, Juan J.-
dc.contributor.authorMosa Ruiz, Jadra-
dc.contributor.authorAparicio, Mario-
dc.contributor.authorPérez-Coll, Domingo-
dc.contributor.authorBelmonte, Manuel-
dc.contributor.authorMiranzo López, Pilar-
dc.contributor.authorOsendi, María Isabel-
dc.identifierdoi: 10.1016/j.addma.2019.100849-
dc.identifiere-issn: 2214-8604-
dc.identifierissn: 2214-7810-
dc.identifier.citationAdditive Manufacturing 30 (2019)-
dc.description.abstract[EN] Steady graphene oxide (GO) scaffolds created by direct ink writing are used to develop a silicon carbonitride (SiCN) -graphene oxide hybrid material through a preceramic polymer route. For achieving mechanically stable GO scaffolds, the drying method is critical as the ink contains about 5 wt.% of GO, 10 wt.% of polyelectrolytes and 85 wt.% of water. The liquid preceramic polymer (polysilazane type) quickly infiltrates the 3D scaffolds, under vacuum conditions, entirely covering the GO network creating a replica of the original scaffold. The hybrid cellular structure -once thermally treated for GO reduction and ceramic conversion- consists of a network of reduced GO (∼10 wt.%) embedded in an amorphous SiCN matrix following the designed architecture. The 3D hybrid structures show notable electrical conductivity (890 S m at room temperature), thermal stability and considerable strength, about 20 times higher than the single GO scaffold. The structures are tested as electrodes for supercapacitors, reaching a gravimetric capacitance of 39 F g that remains stable after 7000 charge/discharge cycles.-
dc.description.sponsorshipThis work was supported by Ministerio de Economía y Competitividad y el Fondo Europeo de Desarrollo Regional with project ref. MAT2015-67437-R (MINECO/FEDER, UE) JJM acknowledges the financial support of MINECO through the FPI contract ref: BES-2016-077759. The authors would like to thank Miguel Gómez for his support in the electrochemical tests.-
dc.subjectFilament printing-
dc.subjectGraphene oxide-
dc.subjectPreceramic polymer-
dc.titleStrong and light cellular silicon carbonitride – Reduced graphene oxide material with enhanced electrical conductivity and capacitive response-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
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