Synthesis of submicron tubules of sodium cobaltate using a natural template of bamboo charcoal as supporting templates

Chia-Jyi Liu, Yong Zhi Chen

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2 Citations (Scopus)


Direction conversion of heat to electricity using thermoelectric materials has attracted considerable attention. The γ-phase of Na xCoO 2 is a potential candidate for thermoelectric applications at high temperatures. In this work, we report a simple approach of fabricating submicron tubules of γ-Na 0.7CoO 2 using the urea-based sol-gel method with the assistance of porous bamboo charcoal as supporting templates. The synthesized tubules are characterized by X-ray diffractometer, field-emission scanning electron microscope and transmission electron microscope. The resulting tubules exhibit a single phase of γ-Na 0.7CoO 2 and have various sizes ranging from about 0.43 to 1.44 μm with the length reaching up to 10 μm.

Original languageEnglish
Pages (from-to)4-6
Number of pages3
JournalMaterials Letters
Publication statusPublished - 2012 Feb 15


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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