| Autor: |
Seung, Yu, Einsla, Melinda L., Hawley, Marilyn, Pivovar, Bryan, Lee, Seung, Roy, Abhishek, McGrath, James |
| Zdroj: |
ECS Transactions; September 2007, Vol. 11 Issue: 1 p49-54, 6p |
| Abstrakt: |
Fuel cell operation under reduced humidity is highly desirable for automotive applications. Unfortunately, sulfonated polymer electrolytes tend to lose proton conductivity with decreasing water activity. It has been observed in our studies that proton conductivity of polymer electrolytes is critically related to nanostructured (phase separated) morphology. In this study, we focus on morphological effects on proton conductivity, particularly at a low relative humidity. Two copolymer systems - . multiblock copolymers and traditional random copolymers were used in the study. Water sorption, proton conductivity and morphology of the systems are compared and H2/air fuel cell performance was evaluated at high temperature and low relative humidity. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
