Effects of post-treatments on microstructure and hydrogen storage performance of the carbon nano-tubes prepared via a metal dusting process

Jeng-Kuei Chang*, Heng Yi Tsai, Wen Ta Tsai

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Preparation of multi-wall carbon nano-tubes (CNTs) is successfully demonstrated via a metal dusting (MD) process, in which a steel coupon and CO-CO2 mixed gas are the only reactants needed. During the process, fresh Fe-Ni nano-particles are produced spontaneously and continuously from the steel, and consequently catalyze the growth of the CNTs. Post-treatments, including heating in air at 550 °C and etching in boiling nitric acid, are used to purify the as-prepared multi-wall CNTs. The microstructure modification due to the post-treatments are examined with a transmission electron microscopy. The possibility of utilizing the MD-produced CNTs as a hydrogen storage material is also explored in this study.

Original languageEnglish
Pages (from-to)317-322
Number of pages6
JournalJournal of Power Sources
Volume182
Issue number1
DOIs
StatePublished - 15 Jul 2008

Keywords

  • Carbon nano-tubes
  • Hydrogen storage
  • Metal dusting
  • Post-treatment

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