Flexible all solid state supercapacitor with high energy density employing black titania nanoparticles as a conductive agent.

Increasing the electrical conductivity of pseudocapacitive materials without changing their morphology is an ideal structural solution to realize both high electrochemical performance and superior flexibility for an all solid state supercapacitor (ASSSC). Herein, we fabricate a flexible ASSSC device employing black titania (TiO2-x:N) decorated two-dimensional (2D) NiO nanosheets as the positive electrode and mesoporous graphene as the negative electrode. In this unique design, NiO nanosheets are used as pseudocapacitive materials and TiO2-x:N nanoparticles serve as the conductive agent.

Gray Ta2O5 Nanowires with Greatly Enhanced Photocatalytic Performance.

Black TiO2, with enhanced solar absorption and photocatalytic activity, has gained extensive attention, inspiring us to investigate the reduction of other wide-bandgap semiconductors for improved performance. Herein, we report the preparation of gray Ta2O5 nanowires with disordered shells and abundant defects via aluminum reduction. Its water decontamination is 2.

Niobium Nitride NbN as a New High-Performance Electrode Material for Supercapacitors.

Supercapacitors suffer either from low capacitance for carbon or derivate electrodes or from poor electrical conductivity and electrochemical stability for metal oxide or conducting polymer electrodes. Transition metal nitrides possess fair electrical conductivity but superior chemical stability, which may be desirable candidates for supercapacitors. Herein, niobium nitride, NbN, is explored to be an excellent capacitive material for the first time.

NiO-decorated mesoporous TiO2 flowers for an improved photovoltaic dye sensitized solar cell.

Reducing light-induced e-h recombination is important for a dye sensitized solar cell (DSSC); the p-type NiO component in TiO2-NiO nanoparticles was reported to significantly decrease charge recombination, but its photovoltaic efficiency remains below 4% owing to a small surface area. In this work, we used a one-pot self-assembly process to fabricate flower-like mesoporous TiO2 decorated by NiO oxides, employing a pluronic polymer P123 as a structure directing and pore forming agent. The flower-like porous TiO2-NiO nanoparticles (F-TiO2-NiO NPs), possessing a high BET surface of 130 m(2) g(-1), are first used as a photoanode in DSSCs.

In situ growth of a MoSe2/Mo counter electrode for high efficiency dye-sensitized solar cells.

A facile and economical MoSe2/Mo structure was in situ prepared to replace the currently preferred expensive Pt and FTO counter electrode (CE) in dye-sensitized solar cells. A power conversion efficiency of 8.13% was achieved, which is comparable to that with Pt-sputtered FTO electrode (8.

Preparation of monodispersed CuInS2 nanopompons and nanoflake films and application in dye-sensitized solar cells.

Monodispersed nanopompons and thin films of CuInS2 with hierarchical nanostructure are obtained via a solvothermal method. The hierarchical thin film of CuInS2 has been reported for the first time to display excellent catalytic activity as a counter electrode in dye-sensitized solar cells, and a power conversion efficiency of 4.8% is achieved.