TY - JOUR
T1 - Nafion-layered sulfonated polysulfone fuel cell membranes
AU - Chen, Sheng Li
AU - Bocarsly, Andrew Bruce
AU - Benziger, Jay Burton
N1 - Funding Information:
The research work was supported by Doctor Program Foundation of the China Education Ministry (Grant No: 20040425006). We also thank the National Science Foundation (DMR-0212707 through the Materials Research and Science Engineering Center at Princeton) for partial support of this work.
PY - 2005/12/1
Y1 - 2005/12/1
N2 - Sulfonated polysulfone (SPSU) with high ion exchange capacity (IEC) and ion conductivity was synthesized through deep sulfonation of polysulfone using the trimethysilyl chlorosulfonate as sulfonation agent. The silicon-containing compounds formed during the synthesis of SPSU were completely removed from the SPSU by simple evaporation. Water swelling, ion exchange capacity, conductivity and fuel cell performance were measured for the SPSU membranes. SPSU membranes with IEC twice that of Nafion-115 were prepared. The conductivity of the SPSU increased exponentially with the relative humidity (RH), achieving conductivities of 0.1 S cm-1 for RH > 70%. A Nafion-layered SPSU PEM fuel cell membrane was synthesized through pressing a thin Nafion-115 layer on to both sides of SPSU membrane. The Nafion layers on the SPSU prevented the water-soluble SPSU from being washed out of MEA, and the membrane was stable during the fuel cell operation up to 120°C.
AB - Sulfonated polysulfone (SPSU) with high ion exchange capacity (IEC) and ion conductivity was synthesized through deep sulfonation of polysulfone using the trimethysilyl chlorosulfonate as sulfonation agent. The silicon-containing compounds formed during the synthesis of SPSU were completely removed from the SPSU by simple evaporation. Water swelling, ion exchange capacity, conductivity and fuel cell performance were measured for the SPSU membranes. SPSU membranes with IEC twice that of Nafion-115 were prepared. The conductivity of the SPSU increased exponentially with the relative humidity (RH), achieving conductivities of 0.1 S cm-1 for RH > 70%. A Nafion-layered SPSU PEM fuel cell membrane was synthesized through pressing a thin Nafion-115 layer on to both sides of SPSU membrane. The Nafion layers on the SPSU prevented the water-soluble SPSU from being washed out of MEA, and the membrane was stable during the fuel cell operation up to 120°C.
KW - Fuel cells
KW - Layered membranes
KW - Polymer electrolyte membranes
KW - Polysulfone
KW - Sulfonation
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U2 - 10.1016/j.jpowsour.2005.03.214
DO - 10.1016/j.jpowsour.2005.03.214
M3 - Article
AN - SCOPUS:28044470546
SN - 0378-7753
VL - 152
SP - 27
EP - 33
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 1-2
ER -