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

  • 제17권1호
  • /
  • Pages.47-54
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  • 2006
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

수소저장용 활성탄소섬유의 표면개질 특성

Surface modification characteristics of activated carbon fibers for hydrogen storage

  • 김신동 (충남대학교 신소재연구소) ;
  • 김주완 (충남대학교 공과대학 정밀공업화학과) ;
  • 임지선 (충남대학교 공과대학 정밀공업화학과) ;
  • 조세호 (충남대학교 공과대학 정밀공업화학과) ;
  • 이영석 (충남대학교 공과대학 정밀공업화학과)
  • Kim, Shin-Dong (Research Institute of Advanced Materials, Chungnam National University) ;
  • Kim, Ju-Wan (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Im, Ji-Sun (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Cho, Se-Ho (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Lee, Young-Seak (Department of Fine Chemical Engineering and Chemistry, Chungnam National University)
  • 발행 : 2006.03.15
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초록

Activated carbon fibers (ACFs) with high surface area and pore volume were modified with metal Ni impregnation and fluorination and investigated hydrogen storage properties by volumetric method. Micropore volume values of ACFs obtained from surface modification with Ni impregnation and fluorination were decreased 9 and 35 %, respectively. Hydrogen storage capacities of fluorinated ACFs were slightly changed, on the other hand, that of Ni impregnated ACF was considerably increased. It means that hydrogen was not only adsorbed on ACF surface, but also on Ni metal surface by means of dissociation. Although the microphone volume of ACF modified with fluorination was decreased, its hydrogen storage were found not to be changed compared with fresh ACF. These results indicated that the surface of ACF after fluorination modification may be strongly attracted hydrogen due to high electronegativity of fluorine. Therefore, it was proven that hydrogen storage capacity was related with micropore volume and surface property of carbon materials as well as specific surface area.

키워드

참고문헌

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