| 초록 |
Proton exchange membrane fuel cells are attracting enormous interest as one of the most promising clean power generators for various applications. The state-ofart membrane materials are perfluorosulfonic acid polymers. However, in term of environmental friendliness and production cost, aromatic polymers are one of the promising candidates. Sulfonated aromatic polymers are typical water-assistant proton-conducting materials, the proton conductivity of the membrane increases linearly with the degree of sulfonation at a fully hydrated state. At elevated temperature and low relative humidity the membrane tends to dehydrate, which lowers the proton conductivity and reduces the performance of the fuel cell. Imidazoe, as a replacement for water, is known to facilitate proton transport in polymer membrane under low humidity. In this study, sulfonated poly(ether ether ketone) with pendant carbonxylica acid group was synthesized, |
