TiO2 nanorods decorated on RGO sheet for an excellent energy storage performance

Heteroatom Modified TiO2/Graphene Aerogel Composites by Electron Beam Irradiation in Supercapacitors

“…Besides, some recent research on TiO 2 or graphene composites as supercapacitors are summarized in Figure 6f and Table 2 for comparison with our work, which shows that the capacity and stability performance of our NT-NSG-140 at high current density is far superior to those reported results. 4,6,8,11,15,18,39 Its excellent capacity and stability at high current density are mainly due to the enhancement of the pseudocapacitance of TiO 2 quantum dots after doping with N atoms, while the conductivity and double-layer capacitance of graphene after codoping with N and S atoms are optimized. The synergistic effect between TiO 2 quantum dots and graphene stabilized the structural stability of NT-NSG-140, and the combination of double-layer capacitance and pseudocapacitance effect further increased the capacity of NT-NSG-140.…”

“…TiO 2 has been widely used as an electrode material for energy storage devices due to its pseudocapacitance, excellent chemical stability, and low cost. − However, the poor electrical conductivity and relatively low theoretical capacitance of TiO 2 greatly limit its practical application. ,, Combining TiO 2 with graphene can therefore improve electrochemical performance by compensating for each other’s defects. For instance, Xiang et al reported a hydrothermal method to prepare rGO-TiO 2 composites; the specific capacitance of 200 F g –1 was obtained at a sweep rate of 2 mV s –1 . However, when the sweep rate was increased to 100 mV s –1 , only 56.2 F g –1 was obtained.…”

“…11,16,17 Combining TiO 2 with graphene can therefore improve electrochemical performance by compensating for each other's defects. For instance, Xiang et al 18 reported a hydrothermal method to prepare rGO-TiO 2 composites; the specific capacitance of 200 F g −1 was obtained at a sweep rate of 2 mV s −1 . However, when the sweep rate was increased to 100 mV s −1 , only 56.2 F g −1 was obtained.…”

Titanium oxide aerogel/graphene oxide based electrode for electrochemical supercapacitors

“…Metal oxides, particularly TiO 2 , when combined with graphene can therefore improve electrochemical performance because they can offset each other's defects 17 . For instance, Godlaveeti and colleagues 18 utilized a hydrothermal method for the synthesis of rGO‐TiO 2 composites, achieving a specific capacitance of 300 F g −1 at a sweep rate of 0.5 Ag −1 . TiO 2 nanotubes/RGO was synthesized by P. Zheng et al, who also demonstrated a discharge capacity of 263 mAhg −1 at a rate of 0.1 Ag −1 19 .…”

CNT/turanite/FeNdCo-alloy electrodes to enhance the capacitance of waterproof/eco-friendly supercapacitors

“…7,13 Currently, the use of carbon materials such as reducedgraphene-oxide (rGO) has taken relevance the last years due to their high surface area and high electrical conductivity. 14 For those reasons, Godalveeti et al 14,15 have developed composites of rGO/SrO-nanorods and TiO 2 -nanorods/rGO, which provided high capacitances of 271 and 330 F g À1 (at 0.5 A g À1 ), respectively. Those last materials also presented capacitance retention of 89-92% after 1000 cycles of charge/discharge.…”