Titanium oxide aerogel/graphene oxide based electrode for electrochemical supercapacitors

In order to build electrochemical energy storage electrodes, carbon composite materials containing nanosized metal oxides might be desirable. This article describes the designing of TiO 2 aerogel/graphene oxide (TiO 2 ‐A/GO) composites for electrochemical supercapacitors. TiO 2 ‐A was synthesized by a simple sol‐gel process followed by annealing at 250°C and thereafter, different concentrations of GO were mixed to prepare TiO 2 ‐A/GO composites via sonochemical method. The intermixing of GO and TiO 2 ‐A in composite was confirmed by observing the structural and crystalline characterizations. Two electrode electrochemical system was used to elucidate the capacitive characteristics of TiO 2 ‐A/GO composite electrode by cyclic voltammetry analysis. In comparison with TiO 2 ‐A electrode, high specific capacitances (C s ) were recorded for TiO 2 ‐A/GO composite electrode. TiO 2 ‐A/2GO composite electrode attained the highest C s value of ~338.2 Fg −1 at 10 mVs −1 with excellent cycle stability after 2000 cycles. Thus, the prepared TiO 2 ‐A/GO composites‐based electrode can be a promising material to achieve good capacitive properties.