One-pot synthesis of α-Fe2O3 nanoplates-reduced graphene oxide composites for supercapacitor application

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 286; pp. 165 - 173
• Main Authors: Quan, Hongying, Cheng, Baochang, Xiao, Yanhe, Lei, Shuijin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.02.2016
• Subjects: Nanocomposite; rGO; Supercapacitor; α-Fe2O3; α-Fe2O3; Supercapacitor; Nanocomposite; rGO
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2015.10.068

α-Fe2O3/rGO nanocomposite consisted of α-Fe2O3 nanoplates homogeneously distributed into the interconnected rGO network was fabricated by one-pot hydrothermal approach and the α-Fe2O3/rGO nanocomposite demonstrated superior electrochemical performance as supercapacitors electrode. [Display omitted] •α-Fe2O3/rGO nanocomposite was synthesized by a facile hydrothermal process.•α-Fe2O3 nanosized plates homogeneously distribute into interconnected rGO network.•The α-Fe2O3/rGO nanocomposite exhibits an enhanced electrochemical performance with a capacitance as high as 903Fg−1 at 1Ag−1. In the present work, two-dimensional α-Fe2O3/rGO nanocomposites were fabricated by one-pot solvothermal approach. Structural and morphological studies showed that the as-prepared α-Fe2O3/rGO nanocomposites were actually composed of α-Fe2O3 nanoplates encapsulated in rGO nanosheets to form two-dimensional nanostructure. As an electrode material for supercapacitor, the specific capacitances of α-Fe2O3/rGO nanocomposites was 903Fg−1 at the current density of 1Ag−1, which is superior to that of bare α-Fe2O3 nanoplates. The α-Fe2O3/rGO nanocomposites with high electrical conductivity and nanostructure allows for effective ion and charge transport in the whole electrode. The results enable the α-Fe2O3/rGO nanocomposites to be promising materials for high performance energy-storage systems.