| abstract |
The present invention relates to a polymer electrolyte membrane comprising a polyimide having a reactive end group and an ion conductive aromatic polymer, a method for producing the polymer electrolyte membrane, and a fuel cell having the polymer electrolyte membrane.n n n According to the present invention, the network structure of a perfect polymer by simple blending of hydrophobic polyimide and hydrophilic ion conductive aromatic polymer [Interpenetrating Polymer Network; (IPN)], a high-density crosslinking of polyimide through reactive end groups, resulting in a polymer electrolyte membrane having low swelling effect, high ionic conductivity even at low humidity conditions, and having methanol crossover suppressing ability. Provided is a fuel cell with improved electrical and mechanical properties. |