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Development of High-Efficient Small Euel Cells : I. Synthesis of Organic-Inorganic Nanocomposite Electrolyte Membranes

고효율 소형 연료전지의 개발 : I.유기-무기 나노복합 전해질막의 합성

  • Park, Yong-Il (School of Materials and System Engineering, Kumoh National Institute of Technology) ;
  • Moon, Joo-Ho (School of Advanced Materials Science and Engineering, Yonsei University) ;
  • Kim, Hye-Kyung (Samsung Advanced Institute of Technology) ;
  • Kim, Suk-Hwam (School of Materials and System Engineering, Kumoh National Institute of Technology)
  • 박용일 (금오공과대학교 신소재시스템공학부) ;
  • 문주호 (연세대학교 신소재공학부) ;
  • 김혜경 (삼성종합기술원) ;
  • 김석환 (금오공과대학교 신소재시스템공학부)
  • Published : 2005.01.01

Abstract

New fast proton-conducting organic-inorganic nanocomposite membranes were successfully fabricated using polymer matrix obtained through proper oxidation of thiol ligands in (3-Mercaptopropyl) trimethoxysilane (MPTS) and hydrolysis/condensation reaction of (3-glycidoxypropyl) trimethoxysilane (GPTS). The obtained nanocomposite membranes showed relatively hirh proton-conductivity over $10^{-2}S/cm$ at $ 25^{circ}C$. The proton conductivities of the fabricated composite membranes increased up to $3.6{\times}10^{-1}$ S/cm cm by increasing temperature and relative humidity to $70^{circ}C$ and 100 $100RH\%$. The high proton conductivity of the composites Is due to the proton conducting path through the GPTS-derived 'pseudo-polyethylene oxide 'network in which sulfonic acid ligands work as a proton donor.

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