Journalartikel

Jahr der Veröffentlichung: 2010

Seiten: 6624-6631

Zeitschrift: Chemistry of Materials

Bandnummer: 22

Heftnummer: 24

ISSN: 0897-4756

DOI Link: https://doi.org/10.1021/cm1020977

Verlag: American Chemical Society

Abstract: 
The synthesis as well as the electrochemical properties study of niobium-doped TiO2 (NTO) with mesoporosity and high surface area is presented. The mesoporous NTO was prepared using a novel poly(ethylene-co-butylene)-b-poly(ethylene oxide) amphiphilic diblock copolymer as a template and simple titanium reagents (TiCl4 and Nb(OC2H5)(5)) by a polymer-assisted sot gel process. The samples were characterized by differential scanning calorimetry and thermogravimetric analysis (DSC-TGA), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (including high-resolution imaging-HRTEM), and the Brunauer Emmett Teller (BET). All samples are highly crystalline and have pore-solid architectures after removal of the polymer template by calcination. The resulting mesoporous NTO shows a high porosity of 46% and a high surface area of 128 m(2)/g, respectively. The as-prepared samples were used as positive electrode materials for lithium-ion battery, whose charge discharge properties, cyclic voltammetry, and cycle performance were examined and revealed very good properties. A highly stable capacity of 160 mA h g(-1) was found after 100 cycles.

Harvard-Zitierstil: Wang, Y., Smarsly, B. and Djerdj, I. (2010) Niobium Doped TiO2 with Mesoporosity and Its Application for Lithium Insertion, Chemistry of Materials, 22(24), pp. 6624-6631. https://doi.org/10.1021/cm1020977

APA-Zitierstil: Wang, Y., Smarsly, B., & Djerdj, I. (2010). Niobium Doped TiO2 with Mesoporosity and Its Application for Lithium Insertion. Chemistry of Materials. 22(24), 6624-6631. https://doi.org/10.1021/cm1020977