Electroless deposition of Ni nanoparticles on carbon nanotubes with the aid of supercritical CO2 fluid and a synergistic hydrogen storage property of the composite

Chih Yao Chen, Kuan Yu Lin, Wen Ta Tsai, Jeng-Kuei Chang*, Chuan Ming Tseng

*Corresponding author for this work

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

A hybrid synthesis protocol that combines electroless plating and the supercritical CO2 (scCO2) technique is developed for the first time to decorate multi-walled carbon nanotubes (CNTs) with Ni nanoparticles. The scCO2 fluid, which is immiscible with aqueous plating solution, renders a heterogeneous Ni deposition reaction and suppresses the lateral growth of Ni, which leads to the formation of nanoparticles. A uniform dispersion of tightly anchored particles, a few nanometers in diameter, on CNTs can be achieved. Since the electroless deposition process can be easily manipulated, large-scale production should be realizable. The constructed CNT/Ni nano-composite exhibits a synergistic property in hydrogen storage performance, which is evaluated using a high-pressure microbalance. The deposited nanoparticles enhance the hydrogen spillover reaction on CNTs, tripling the hydrogen storage amount at room temperature as compared to pristine CNTs.

Original languageEnglish
Pages (from-to)5490-5497
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number11
DOIs
StatePublished - 1 Jun 2010

Keywords

  • Carbon nanotubes
  • Electroless deposition
  • Hydrogen storage material
  • Ni nanoparticles
  • Supercritical fluid

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