Solvent and acidification method effects in the performance of new sulfonated copolyimides membranes in PEM-fuel cells

1. Blázquez, J.A.
2. Iruin, J.J.
3. Eceolaza, S.
4. Marestin, C.
5. Mercier, R.
6. Mecerreyes, D.
7. Miguel, O.
8. Vela, A.
9. Marcilla, R.