Fabrication of TiO₂ Nanofilm Photoelectrodes on Ti Foil by Ti Ion Implantation and Subsequent Annealing

Figure 6

(a) The current-potential curves in 0.5 M Na₂SO₄ aqueous solution under simulated solar light for TiO₂ formed by Ti ion implantation and subsequent annealing at 400, 500, 600, and 700°C. (b) The i-t curve annealed at 600 and 700°C.

(a)

(b)