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 journalArticlepeer-review

65 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 languageEnglish
Pages (from-to)16228-16233
Number of pages6
JournalJournal of Physical Chemistry C
Volume115
Issue number32
DOIs
Publication statusPublished - 2011 Aug 18
Externally publishedYes

ASJC Scopus subject areas

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

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