Synthesis of cross-linked graphene aerogel/Fe2O3 nanocomposite with enhanced supercapacitive performance. Issue 10 (1st August 2016)

• Record Type: Journal Article
• Authors: Gholipour-Ranjbar, Habib; Ganjali, Mohammad Reza; Norouzi, Parviz; Naderi, Hamid Reza
• Is Part Of: Ceramics international. Volume 42:Issue 10(2016)
• Page Start: 12097
• Page End: 12104
• Publication Date: 2016-08-01
• Subjects: Cross-linked graphene aerogel -- Fe2O3 -- P-phenylenediamine -- Supercapacitor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.04.140
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this work, cross-linked graphene aerogel (CL-GA) and its composite with Fe2 O3 nanoparticles (NPs) were synthesized through a one-step hydrothermal procedure by using p-phenylenediamine (PPD). Structural characterizations revealed that in the preparation of the composite PPD acts as a cross-liker and provides high surface area by decreasing restacking of graphene sheets and functions as nitrogen source simultaneously. The electrochemical characteristics of the nanocomposite were investigated by cyclic voltammetry (CV), galvanostatic charge/discharge, electrochemical impedance spectroscopy (EIS) and Fast Fourier transform continues cyclic voltammetry (FFTCCV). The results show that cross-linked graphene aerogel/Fe2 O3 (CL-GA/Fe2 O3 ) nanocomposite displays enhanced supercapacitive performance, where it has capacitance of 445 at 1 A g −1, high energy density of 63 W h Kg −1, and 89% capacitance retention after 5000 cycles in 3 M KOH. Presence of PPD considerably improved supercapacitive performance of nanocomposite as a result it could be promising material in synthesis of efficient graphene/metal oxide-based electrode material for high performance supercapacitors.