A new inorganic/organic composite film PEDOT:Ce@TiO 2 was prepared through drop casting-secondary polymerization method using the mixture solution of PEDOT oligomer and cerium-containing polyoxotitanate cage [Ti 8 O 7 (HOEt)(OEt) 21 Ce]. PEDOT:Ce@TiO 2 exhibits a special nanostructure with gully-like rough surface, which shows strong hydrophobicity while good wettability to acetonitrile solution. PEDOT:Ce@TiO 2 can be used as cathodically electrochromic film and supercapacitor electrode material. The mass specific capacitance of PEDOT:Ce@TiO 2 is 71.2 F/g at a current density of 1 A/g, which is 1.7 times higher than that of the PEDOT film. An all-solid-state electrochromic supercapacitor prototype device was further assembled using PEDOT:Ce@TiO 2. With charging completed the electrochromic area of this device shows dark green, and it turns bright yellow with discharging completed.

A new nano silver particels loaded graphene oxide (AgNPs@GO) was obtained through ultrasonic assisted liquid phase method. In AgNPs@GO, nano silver particels (AgNPs) are mainly anchored at oxygen containing groups and defects of graphene oxide (GO) sheets, part of GO sheets are reduced and some Ag(0) atoms have been oxidized to Ag + ions. AgNPs@GO exhibits significantly stronger ability for inhibiting Pseudomonas aeruginosa than that of AgNPs and GO. Therefore, AgNPs@GO was further introduced to polyethylene (PE) matrix as an additive to prepare a new composite material 0.48wt%-AgNPs@GO/PE. Compare with bare PE and AgNPs doped PE composites, 0.48wt%-AgNPs@GO/PE not only has a better antibacterial ability and stronger water vapor barrier property, but also dissolves out less nonvolatile substance than PE in water and ethanol solution.