Wolframite-type ZnWO4 nanorods as new anodes for Li-ion batteries

Hyun Woo Shim; In Sun Cho; Kug Sun Hong; Ah Hyeon Lim; Dong Wan Kim

doi:10.1021/jp204656v

Wolframite-type ZnWO₄ nanorods as new anodes for Li-ion batteries

Hyun Woo Shim, In Sun Cho, Kug Sun Hong, Ah Hyeon Lim, Dong Wan Kim

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

A divalent wolframite-structure zinc tungstate (ZnWO₄) was synthesized using a facile hydrothermal process at 180 °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 ZnWO ₄ 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.

Original language	English
Pages (from-to)	16228-16233
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	115
Issue number	32
DOIs	https://doi.org/10.1021/jp204656v
Publication status	Published - 2011 Aug 18
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "A divalent wolframite-structure zinc tungstate (ZnWO4) was synthesized using a facile hydrothermal process at 180 °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 ZnWO 4 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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AU - Shim, Hyun Woo

AU - Cho, In Sun

AU - Hong, Kug Sun

AU - Lim, Ah Hyeon

AU - Kim, Dong Wan

PY - 2011/8/18

Y1 - 2011/8/18

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Wolframite-type ZnWO₄ nanorods as new anodes for Li-ion batteries

Abstract

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