title: Reduced graphene oxide aerogel with high-rate supercapacitive performance in aqueous electrolytes.
abstract: Reduced graphene oxide aerogel (RGOA) is synthesized successfully through a simultaneous self-assembly and reduction process using hypophosphorous acid and I2 as reductant. Nitrogen sorption analysis shows that the Brunauer-Emmett-Teller surface area of RGOA could reach as high as 830 m2 g-1, which is the largest value ever reported for graphene-based aerogels obtained through the simultaneous self-assembly and reduction strategy. The as-prepared RGOA is characterized by a variety of means such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. Electrochemical tests show that RGOA exhibits a high-rate supercapacitive performance in aqueous electrolytes. The specific capacitance of RGOA is calculated to be 211.8 and 278.6 F g-1 in KOH and H2SO4 electrolytes, respectively. The perfect supercapacitive performance of RGOA is ascribed to its three-dimensional structure and the existence of oxygen-containing groups.
authors.affiliation: School of Chemical Engineering, Shandong University of Technology, Zibo 255049, People's Republic of China. zhuosp_academic@yahoo.com.
authors.forename: Weijiang
authors.initials: W
authors.lastname: Si
authors.forename: Xiaozhong
authors.initials: X
authors.lastname: Wu
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
authors.forename: Feifei
authors.initials: F
authors.lastname: Guo
authors.forename: Shuping
authors.initials: S
authors.lastname: Zhuo
authors.forename: Hongyou
authors.initials: H
authors.lastname: Cui
authors.forename: Wei
authors.initials: W
authors.lastname: Xing