期刊
NANO RESEARCH
卷 5, 期 11, 页码 826-832出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-012-0266-6
关键词
Porous single-crystal WO3 nanoplate; morphology-conserved transformation; Li ion battery anode; photocatalysis
类别
资金
- National Natural Science Foundation of China (NSFC)/Hong Kong-Research Grants Council (HK-RGC) [NSFC20931160426, N_HKUST609/09]
- HK-RGC General Research Funds [HKUST 604809, 605710]
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.
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