naa a22 4500 510818757 CHVBK 20180411083520.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11814-012-0120-2 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0120-2 A study on sulfonated poly(arylene ether sulfone) membranes containing two different types of SiO2 for a high temperature and low-humidified polymer electrolyte fuel cell [Elektronische Daten] [Sung-Mi Park, Young-Woo Choi, Tae-Hyun Yang, Jin-Soo Park, Sung-Hyun Kim] Two different types of silica oxide were prepared as filler in sulfonated polymers for fuel cell applications operated under water deficient environment. SiO2 nanoparticle and thiol-embedded SiO2 nanoparticles were mechanically mixed with sulfonated (arylene ether sulfone) solutions, and then the mixtures were cast to prepare composite membranes. The composite membranes with different amount of SiO2 were prepared to investigate the effect of two types of SiO2 nanoparticles on ionic conductivity with relative humidity at 120 °C. In addition, ion exchange capacity, water uptake, thermogravitational analysis, differential scanning calorimetry were studied. As results, the composite membranes containing thiol-embedded SiO2 showed better water-channel forming ability at low relative humidity less than 50% in this study. Under full hydration of the composite membranes, the composite membranes containing pure SiO2 nano-particles have higher ionic conductivity since the thiol-embedded SiO2 might cause steric hindrance to make water channel well connected. Thus, below 50% relative humidity, the composite membranes containing 10 wt% of thiol-embedded SiO2 showed the best ionic conductivity. It is very promising for polymer electrolyte fuel cells operated normally under 50% relative humidity at cathode. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Silica nationallicence Composite Membrane nationallicence Proton Conductivity nationallicence Low-humidified nationallicence Polymer Electrolyte Membrane Fuel Cell nationallicence Park Sung-Mi Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut Choi Young-Woo Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut Yang Tae-Hyun Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut Park Jin-Soo Department of Environmental Engineering, Sangmyung University, 300, Anseo-dong, Dongnam-gu, 330-720, Cheonan-si, Korea aut Kim Sung-Hyun Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, 136-701, Seoul, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 87-94 0256-1115 30:1<87 2013 30 11814 https://doi.org/10.1007/s11814-012-0120-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0120-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Park Sung-Mi Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut NATIONALLICENCE 700 1- Choi Young-Woo Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut NATIONALLICENCE 700 1- Yang Tae-Hyun Fuel Cell Research Center, Korea Institute of Energy Research, Gajeong-dong, Yuseong-gu, 305-343, Daejeon, Korea aut NATIONALLICENCE 700 1- Park Jin-Soo Department of Environmental Engineering, Sangmyung University, 300, Anseo-dong, Dongnam-gu, 330-720, Cheonan-si, Korea aut NATIONALLICENCE 700 1- Kim Sung-Hyun Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, 136-701, Seoul, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 87-94 0256-1115 30:1<87 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer