Issue 11, 2015

Surfactant-assisted hydrothermal synthesis of flower-like tin oxide/graphene composites for high-performance supercapacitors

Abstract

We report a simple, one-pot hydrothermal method for synthesizing tin oxide (SnO2) nanoparticle-decorated reduced graphene oxide (RGO) nanocomposites. Transmission electron microscopy images show that flower-like SnO2 architectures are homogeneously dispersed onto the RGO surface. The composite exhibits a maximum specific capacitance of 396 F g−1 (at a current density of 4.5 A g−1), with a capacitance retention of 92.6% even after 10 000 continuous charge/discharge cycles, which is sevenfold higher than that of pure RGO (55 F g−1). The high capacitance is attributed to the synergetic effect of SnO2 and RGO. In addition, the composite shows efficient photodegradation of methylene blue under visible light. The enhanced degradation is ascribed to good adsorption and improved separation efficiency of photo-induced electron–hole pairs.

Graphical abstract: Surfactant-assisted hydrothermal synthesis of flower-like tin oxide/graphene composites for high-performance supercapacitors

Article information

Article type
Paper
Submitted
11 Jun 2015
Accepted
20 Aug 2015
First published
01 Sep 2015

New J. Chem., 2015,39, 8505-8512

Surfactant-assisted hydrothermal synthesis of flower-like tin oxide/graphene composites for high-performance supercapacitors

Y. Haldorai, Y. S. Huh and Y. Han, New J. Chem., 2015, 39, 8505 DOI: 10.1039/C5NJ01442E

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