TY - JOUR
T1 - Ion exchange resin/polystyrene sulfonate composite membranes for PEM fuel cells
AU - Chen, Sheng Li
AU - Krishnan, L.
AU - Srinivasan, S.
AU - Benziger, Jay Burton
AU - Bocarsly, Andrew Bruce
N1 - Funding Information:
The authors thank United Technologies for support of this work under a Department of Energy contract.
PY - 2004/11/1
Y1 - 2004/11/1
N2 - A new composite proton exchange membrane was made by casting a polystyrene sulfonate (PSS) solution with suspended micron sized particles of a crosslinked PSS ion exchange resin. The chemical compatibility of the resin and the PSS allow stable composites with up to 50 wt.% resin. The resin/PSS composite membranes have greater ion exchange capacity than PSS membranes, but the ion conductivity is similar to that of PSS. Swelling of the composite membranes as a function of water uptake is lower than that of PSS. The composite membranes are mechanically more robust and display greater chemical stability in a fuel cell than the PSS membranes. The polarization curves show long-term degradation of the membranes; the cell potential decreased by 60% in 55 h for a PSS membrane, and in 340 h for a composite membrane. The reduced rate of degradation of the composite membranes suggests that with further refinement they may have potential as an inexpensive alternative for PEM fuel cells.
AB - A new composite proton exchange membrane was made by casting a polystyrene sulfonate (PSS) solution with suspended micron sized particles of a crosslinked PSS ion exchange resin. The chemical compatibility of the resin and the PSS allow stable composites with up to 50 wt.% resin. The resin/PSS composite membranes have greater ion exchange capacity than PSS membranes, but the ion conductivity is similar to that of PSS. Swelling of the composite membranes as a function of water uptake is lower than that of PSS. The composite membranes are mechanically more robust and display greater chemical stability in a fuel cell than the PSS membranes. The polarization curves show long-term degradation of the membranes; the cell potential decreased by 60% in 55 h for a PSS membrane, and in 340 h for a composite membrane. The reduced rate of degradation of the composite membranes suggests that with further refinement they may have potential as an inexpensive alternative for PEM fuel cells.
KW - Composite membranes
KW - Electrochemistry
KW - Fuel cell
KW - Polymer electrolyte membrane
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U2 - 10.1016/j.memsci.2004.06.037
DO - 10.1016/j.memsci.2004.06.037
M3 - Article
AN - SCOPUS:4544276776
SN - 0376-7388
VL - 243
SP - 327
EP - 333
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1-2
ER -