TY - JOUR
T1 - Phosphoric acid-doped SDF-F/poly(VI-co-MPS)/PTFE membrane for a high temperature proton exchange membrane fuel cell
AU - Lee, Jongwon
AU - Yi, Cheol Woo
AU - Kim, Keon
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/6/20
Y1 - 2011/6/20
N2 - Sulfonated poly(fluorinated arylene ether)s (SDF-F)/poly[(N-vinylimidazole) -co-(3-methacryloxypropyl-trimethoxysilane)] (poly(VI-co-MPS))/ poly(tetrafluoroethylene) (PTFE) is prepared for a high temperature proton exchange membrane fuel cell (PEMFC). The reaction of the membrane with phosphoric acid forms silicate phosphor, as a chemically bound proton carrier, in the membrane. Thus-formed silicate phosphor, nitrogen in the imidazole ring, and physically bound phosphoric acid act as proton carriers in the membrane. The physico-chemical and electrochemical properties of the membrane are investigated by various analytical tools. The phosphoric acid uptake and proton conductivity of the SDF-F/poly(VI-co-MPS)/PTFE membrane are higher than those of SDF-F/PVI/PTFE. The power densities of cells with SDF-F/poly(VI-co-MPS)/PTFE membranes at 0.6 V are 286, 302, and 320 mW cm-2 at 150, 170, and 190 °C, respectively. Overall, the SDFF/ poly(VI-co-MPS)/PTFE membrane is one of the candidates for anhydrous HT-PEMFCs with enhanced mechanical strength and improved cell performance.
AB - Sulfonated poly(fluorinated arylene ether)s (SDF-F)/poly[(N-vinylimidazole) -co-(3-methacryloxypropyl-trimethoxysilane)] (poly(VI-co-MPS))/ poly(tetrafluoroethylene) (PTFE) is prepared for a high temperature proton exchange membrane fuel cell (PEMFC). The reaction of the membrane with phosphoric acid forms silicate phosphor, as a chemically bound proton carrier, in the membrane. Thus-formed silicate phosphor, nitrogen in the imidazole ring, and physically bound phosphoric acid act as proton carriers in the membrane. The physico-chemical and electrochemical properties of the membrane are investigated by various analytical tools. The phosphoric acid uptake and proton conductivity of the SDF-F/poly(VI-co-MPS)/PTFE membrane are higher than those of SDF-F/PVI/PTFE. The power densities of cells with SDF-F/poly(VI-co-MPS)/PTFE membranes at 0.6 V are 286, 302, and 320 mW cm-2 at 150, 170, and 190 °C, respectively. Overall, the SDFF/ poly(VI-co-MPS)/PTFE membrane is one of the candidates for anhydrous HT-PEMFCs with enhanced mechanical strength and improved cell performance.
KW - Acid-doped membrane
KW - Anhydrous condition
KW - High-temperature PEMFCs
KW - Proton conducting membrane
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U2 - 10.5012/bkcs.2011.32.6.1902
DO - 10.5012/bkcs.2011.32.6.1902
M3 - Article
AN - SCOPUS:79959384431
VL - 32
SP - 1902
EP - 1906
JO - Bulletin of the Korean Chemical Society
JF - Bulletin of the Korean Chemical Society
SN - 0253-2964
IS - 6
ER -