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http://dx.doi.org/10.4191/KCERS.2005.42.1.050

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

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)
Publication Information
Journal of the Korean Ceramic Society / v.42, no.1, 2005 , pp. 50-55 More about this Journal
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.
Keywords
Nanocomposite; Electrolyte; Fuel cell; Proton conductivity;
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