Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effect of surface treatments on Single-walled Carbon nanotubes(SWNTs) for Hydrogen storage

수소저장용 단일벽 탄소나노튜브의 표면처리 효과

  • Lee, Young-Seak (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Cho, Se-Ho (Department of Chemical Engineering, Sunchon National University) ;
  • Park, Il-Nam (Department of Fine Chemical Engineering and Chemistry, Chungnam National University)
  • 이영석 (충남대학교 공과대학 정밀공업화학과) ;
  • 조세호 (순천대학교 신소재응용공학부) ;
  • 박일남 (충남대학교 공과대학 정밀공업화학과)
  • Published : 2005.12.15
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Abstract

In this study, We had surface-treated single-walled carbon nanotubes (SWNTs) for improving hydrogen storage capacity. The SWNTs were treated by heat treatment, acid treatment and fluorinated at various temperatures. The SWNTs were characterized by Raman spectroscopy and TEM and estimated hydrogen storage capacities at 303K. As shown Raman spectra and TEM images, the structure of fluorinated SWNTs were stable at 423K but changed to the MWNTs-like structure or onion structure over 523K. Hydrogen storage capacity of SWNTs fluorinated at 423K was remarkably increased 2.6 times than that of pristine SWNTs. For SWNTs fluorinated at 573K, the amount of hydrogen adsorbed wasn't increased compared with SWNTs fluorinated at 423K. Therefore, high hydrogen storage capacity of SWNTs could be archived by fluorinated condition at 423K, which was not changed SWNT structure.

Keywords

References

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