Abstract
This communication demonstrates the first work on anodic composite deposition of oxide nanocomposites. Rutile TiO 2 nanoflowers with an average petal size of ca. 10 nm in diameter and 100 nm in length were synthesized from a TiCl 3 solution purged with air at 25 °C for 12 days prior to the composite deposition. Hydrous ruthenium oxide (RuO 2 ·xH 2 O) and TiO 2 nanoflowers were composite-deposited onto Ti substrates for supercapacitors. In comparing with RuO 2 ·xH 2 O deposits, RuO 2 ·xH 2 O-TiO 2 nanocomposites with a highly porous nature exhibit the weakly mass-dependent specific capacitance and high-power capacitive characteristics. © 2009 Elsevier B.V. All rights reserved.