Non-Covalent Functionalization of Graphene with Bisphenol A for High-Performance Supercapacitors

作者：Hu Haixiong; Hu Zhongai^*; Ren Xiaoying; Yang Yuying; Qiang Ruibing; An Ning; Wu Hongying

来源：Chinese Journal of Chemistry, 2015, 33(2): 199-206.

DOI：10.1002/cjoc.201400740

• non-covalent functionalization
• electrochemical properties
• stacking interaction
• supercapacitor

The reduced graphene oxide (RGO)/bisphenol A (BPA) composites were prepared by an adsorption-reduction method. The composites are characterized by X-ray diffraction (XRD), UV-vis, thermogravimetric (TG) analysis, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM). The results confirm that BPA is adsorbed on the basal plane of RGO by - stacking interaction. Furthermore, the electrochemical behaviors were evaluated by cyclic voltammetry, galvanostatic charge/discharge techniques and electrochemical impedance spectroscopy (EIS). The results show that the RGO/BPA nanocomposites exhibit ultrahigh specific capacitance of 466 F<bold>g(</bold>-1) at a current density of 1 A<bold>g(</bold>-1), excellent rate capability (more than 81% retention at 10 A<bold>g(</bold>-1) relative to 1 A<bold>g(</bold>-1)) and superior cycling stability (90% capacitance decay after 4000 cycles). Consequently, the RGO/BPA nanocomposites can be regarded as promising electrode materials for supercapacitor applications.

• 出版日期2015-2
• 单位西北师范大学