Nano Research

Article Title

Hierarchical WO3 flowers comprising porous single-crystalline nanoplates show enhanced lithium storage and photocatalysis


Porous single-crystal WO3 nanoplate, morphology-conserved transformation, Li ion battery anode, photocatalysis


We report a morphology-conserved transformation approach to successfully synthesize a unique porous WO3 nanoplate assembly, which is hierarchically structured like a flower, from an ammonium tungsten peroxo oxalate containing precursor. The resulting novel, multiple length scale architecture of WO3 and its formation process have been investigated by a series of microscopic, spectroscopic and other techniques. A possible growth mechanism was proposed on the basis of the experiments. When tested as a lithium ion battery anode, the porous WO3 nanoplate assembly showed high rate capacity and high cyclability. Not least, it has also exhibited high photocatalytic activities under visible light irradiation.

Graphical Abstract


Tsinghua University Press