| Popis: |
Polymer electrolyte membrane (PEM) fuel cell efficiency must be improved in order to become cost-competitive with fossil fuel based technologies. Approaches to increasing cost efficiency include raising fuel cell operating temperature, reducing component cost and properly controlling fuel cell humidification. We sought to fulfill all three requirements by developing a new low-cost, high-temperature humidification membrane material. Currently Nafion dominates the membrane humidifier market due to its excellent water transport characteristics, but its high price (∼$1000/m2) and low maximum operating temperature ( |
