Capacitance performance of mesoporous TiO₂ whisker and composite loaded with RuO₂

Mesoporous TiO₂ whisker prepared by sintering has high crystallinity, its pore size is controllable, and the cost is low, so it can be mass-produced. If the material is used in electrochemical capacitor electrode, the cost of the capacitor will be cut down. In this paper, mesoporous TiO₂ whisker with pore size around 10 nm and TiO₂/RuO₂ composite material were prepared to make electrodes. The results of cyclic voltammograms showed that the material had typical electrochemical capacitor property even in the neutral solution of 0.1 mol·L^-1 Na₂SO₄. The capacitor property was within a wide scan range. When the mesoporous TiO₂ whisker was loaded with RuO₂, the performance was excellent, and its capacitance was up to 940.4 F·g^-1 (divided by the mass of RuO₂), so it is feasible to use this material as mass-produced electrode material.