TY - GEN
T1 - Multiphase polymer membranes for direct methanol fuel cell
AU - Kim, Sung Chul
AU - Kim, Dong Hwee
AU - Choi, Jisu
AU - Kwon, Yo Han
AU - Lee, Sang Young
PY - 2009
Y1 - 2009
N2 - The purpose of the present work is the development of new multiphase polymer electrolyte membranes substituting Nafion. To reduce the methanol permeability and the cost of the current Nafion membranes, sulfonated hydrocarbon membranes of polysulfone and polyether ketone were blended with nonsulfonated and hydrophobic polysulfone or polyether ketone. The sulfonated phase will act as the proton conducting phase and the nonsulfonated, hydrophobic phase acts as the methanol barrier. By forming the spinodal (co-continuous) morphology through controlling the phase separation kinetics during the casting of the membranes, the continuous hydrophobic phase will restrict the swelling of the neighboring hydrophilic phase (the proton conducting phase) and thus reducing the methanol cross-over through the free water in the hydrophilic conducting phase. Semi-IPN's of crosslinked sulfonated polysufone and nonsulfonated polysulfone membranes were also evaluated as the multiphase polymer membranes for direct methanol fuel cell.
AB - The purpose of the present work is the development of new multiphase polymer electrolyte membranes substituting Nafion. To reduce the methanol permeability and the cost of the current Nafion membranes, sulfonated hydrocarbon membranes of polysulfone and polyether ketone were blended with nonsulfonated and hydrophobic polysulfone or polyether ketone. The sulfonated phase will act as the proton conducting phase and the nonsulfonated, hydrophobic phase acts as the methanol barrier. By forming the spinodal (co-continuous) morphology through controlling the phase separation kinetics during the casting of the membranes, the continuous hydrophobic phase will restrict the swelling of the neighboring hydrophilic phase (the proton conducting phase) and thus reducing the methanol cross-over through the free water in the hydrophilic conducting phase. Semi-IPN's of crosslinked sulfonated polysufone and nonsulfonated polysulfone membranes were also evaluated as the multiphase polymer membranes for direct methanol fuel cell.
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M3 - Conference contribution
AN - SCOPUS:78649521387
SN - 9780841224414
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
T2 - 237th National Meeting and Exposition of the American Chemical Society, ACS 2009
Y2 - 22 March 2009 through 26 March 2009
ER -