| 초록 |
The anion exchange membrane fuel cells have been noticed as the promising power sources. The AEMs, which conduct hydroxide ions, is the key component of AEMFCs. Hence, there has been current research exploring novel AEMs as an alternative to PEMs. The polymers used for AEMs are required to possess high hydroxide conductivity, together with stability. Quaternary ammoniums have been the most widely studied hydroxide conducting groups for AEMs. However, the environmental issue of using volatile reagents such as trimethyl amine, and the low chemical stabilities of the ammonium-based AEMs under high pH conditions, limit the large scale synthesis and long term durability of AEMFCs. We have developed PES containing methyl morpholinium group (MM-PES) as novel AEMs. The membranes were obtained from the morpholinium-functionalized polymer, and display high hydroxide conductivity of 7.9 x 10-2 S/cm at 80oC, together with good stability. We synthesized MM-PES polymer, and fabricated membranes. |
