한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제42권1호
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  • Pages.50-55
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  • 2005
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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고효율 소형 연료전지의 개발 : I.유기-무기 나노복합 전해질막의 합성

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

  • 박용일 (금오공과대학교 신소재시스템공학부) ;
  • 문주호 (연세대학교 신소재공학부) ;
  • 김혜경 (삼성종합기술원) ;
  • 김석환 (금오공과대학교 신소재시스템공학부)
  • 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)
  • 발행 : 2005.01.01
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초록

(3-Mercaptopropyl) trimethoxysilane(MPTS)의 thoil기(-SH)의 적절한 산화 및 (3-glycidoxypropyl) trimethooxysilane(GHS)와의 수화/중축합 반응을 통하여 얻어진 고분자 기질을 사용하여 새로운 고 프로톤 전도성 유기-무기 나노복합막을 성공적으로 합성하였다. 합성된 나노복합막으로부터 얻어진 프로톤 전도도는 $25^{circ}C$에서 $10^{-2} S/cm$ 이상의 높은 값을 나타내었으며, 온도와 상대습도를 $70^{circ}C$와 $100RH\%$로 증가시킴에 따라 전도도는 $3.6{\times}10^{-1}$ S/cm까지 증가하였다. 복합체의 높은 프로톤 전도도는 MPTS 말단의 thiol의 산화에 의해 얻어지는 아황산기$(-SO_{3}^{-})$가 프로톤 donor로서 작용하고, GHS로부터 유도된 'pseudo polyethylene oxide' 네트워크가 프로톤의 전도 path로 작용하고 있음을 나타낸다.

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.

키워드

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