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• W2018625472 abstract "A class of new proton-electrolyte membranes (PEM) based on inorganic–organic copolymers were synthesized from 3-glycidoxypropyltrimethoxysilane (GPTS), sulfonated phenyltriethoxysilane (SPS), tetraethoxysilane (TEOS) and H3PO4. Their thermal stability, microstructure, and proton conductivity were investigated under the conditions for PEM fuel cell operation. TGA–DSC analysis indicated that these membranes are thermally stable up to 180 °C. Scanning electron microscope (SEM) micrographs show that the membranes are dense. A proton conductivity of 1.6×10−3 S/cm was observed at 100 °C in a dry atmosphere for a sample with 0.5 mol GPTS and 1 mol H3PO4 in 1 mol Si, representing the highest proton conductivity in anhydrous state among PEMs ever reported. In an environment with 15% relative humidity (RH), the proton conductivity increased to 3.6×10−2 S/cm at 120 °C. The proton conductivity increases with H3PO4 contents and relative humidity. The hybrid inorganic–organic materials can be readily fabricated in membrane form with thickness as thin as 20 μm on porous electrodes; they have great potential to be used as the electrolytes for high-temperature PEM fuel cells." @default.
• W2018625472 created "2016-06-24" @default.
• W2018625472 creator A5044294158 @default.
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• W2018625472 date "2003-12-01" @default.
• W2018625472 modified "2023-09-30" @default.
• W2018625472 title "Synthesis and conductivity of proton-electrolyte membranes based on hybrid inorganic–organic copolymers" @default.
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• W2018625472 doi "https://doi.org/10.1016/j.electacta.2003.08.002" @default.
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