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Wolframite-type ZnWO4 Nanorods as New Anodes for Li-Ion Batteries
被引:78
作者:
Shim, Hyun-Woo
[1
]
Cho, In-Sun
[2
]
Hong, Kug Sun
[2
]
Lim, Ah-Hyeon
[1
]
Kim, Dong-Wan
[1
]
机构:
[1] Ajou Univ, Dept Mat Sci & Engn, Suwon 443749, South Korea
[2] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea
关键词:
TEMPLATE-FREE SYNTHESIS;
NANOCOMPOSITE ELECTRODES;
CUPROUS-OXIDE;
HIGH-CAPACITY;
LITHIUM;
NANOWIRES;
STORAGE;
NANOTUBES;
ZNCO2O4;
FACILE;
D O I:
10.1021/jp204656v
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
A divalent wolframite-structure zinc tungstate (ZnWO4) was synthesized using a facile hydrothermal process at 180 degrees 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-Emmett-Teller 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(-1) after 150 cycles, which are much higher than those of graphite-based anodes.
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页码:16228 / 16233
页数:6
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