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Open AccessArticle

Graphene/Ruthenium Active Species Aerogel as Electrode for Supercapacitor Applications

1
Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia, 10129 Torino, Italy
2
Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Materials 2018, 11(1), 57; https://doi.org/10.3390/ma11010057
Received: 20 November 2017 / Revised: 17 December 2017 / Accepted: 26 December 2017 / Published: 30 December 2017
(This article belongs to the Section Energy Materials)
Ruthenium active species containing Ruthenium Sulphide (RuS2) is synthesized together with a self-assembled reduced graphene oxide (RGO) aerogel by a one-pot hydrothermal synthesis. Ruthenium Chloride and L-Cysteine are used as reactants. The hydrothermal synthesis of the innovative hybrid material occurs at 180 °C for 12 h, by using water as solvent. The structure and morphology of the hybrid material are fully characterized by Raman, XRD, XPS, FESEM and TEM. The XRD and diffraction pattern obtained by TEM display an amorphous nanostructure of RuS2 on RGO crystallized flakes. The specific capacitance measured in planar configuration in 1 M NaCl electrolyte at 5 mV s−1 is 238 F g−1. This supercapacitor electrode also exhibits perfect cyclic stability without loss of the specific capacitance after 15,000 cycles. In summary, the RGO/Ruthenium active species hybrid material demonstrates remarkable properties for use as active material for supercapacitor applications. View Full-Text
Keywords: reduced graphene oxide; aerogels; ruthenium sulphide; supercapacitor; hybrid nanocomposite reduced graphene oxide; aerogels; ruthenium sulphide; supercapacitor; hybrid nanocomposite
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MDPI and ACS Style

Gigot, A.; Fontana, M.; Pirri, C.F.; Rivolo, P. Graphene/Ruthenium Active Species Aerogel as Electrode for Supercapacitor Applications. Materials 2018, 11, 57.

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