文摘
A divalent wolframite-structure zinc tungstate (ZnWO4) was synthesized using a facile hydrothermal process at 180 掳C, with pH adjustment to drive the preferential growth along the [100] direction, resulting in the formation of one-dimensional nanorods. The resulting nanorods were characterized in detail using X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray analysis, and Brunauer鈥揈mmett鈥揟eller measurements. In addition, the Li electroactivities of the ZnWO4 nanorods were investigated using cyclic voltammetry and galvanostatic cycling. The ZnWO4 nanorods could deliver reversibly sustained high capacities of over 420 mAh g鈥? after 150 cycles, which are much higher than those of graphite-based anodes.