摘要 |
Proton conducting membranes having improved resistance to methanol crossover are provided, along with methods for their manufacture. In a preferred embodiment, the polymeric membranes are formed by (a) dissolving a polymer, preferably a polyphosphazene, in an organic solvent to form a polymer solution; (b) adding an oxyacid to the polymer solution; (c) optionally, adding water to the polymer solution, preferably in a molar ratio equivalent to the oxyacid; (d) optionally, concentrating the polymer solution; (e) casting the polymer solution on a casting surface, such as one formed of or coated with TEFLON<TM>; and (f) removing the organic solvent, so as to form the polymeric membrane. A particularly useful application for these polymeric membranes is in fuel cells, such as those wherein methanol and oxygen are converted into electrical energy. |
申请人 |
THE PENN STATE RESEARCH FOUNDATION;ALLCOCK, HARRY, R.;HOFMANN, MICHAEL, A.;LVOV, SERGUEI, N.;ZHOU, XIANG, Y. |
发明人 |
ALLCOCK, HARRY, R.;HOFMANN, MICHAEL, A.;LVOV, SERGUEI, N.;ZHOU, XIANG, Y. |