@@ 燃料电池作为高效环保的绿色能源,有望在未来获得广泛应用.质子交换膜是燃料电池的核心部件,其研制和开发备受瞩目.以Nation膜为代表的全氟磺酸型质子交换膜,具有较高的质子传输能力及优异的尺寸和化学稳定性,其研制已实现工业化.然而其使用温度较低、价格昂贵及阻燃性差等缺点限制了Nation膜的更广泛应用.因此研制具有优异性能的可替代质子交换膜材料是该领域研究热点之一[1,2].聚芳醚酮和聚芳醚砜等高性能高分子材料具有优异的热和化学稳定性及良好的机械性能.%Two block SPEEK/PES copolymers were prepared via the postsulfonation reaction of the well designed precursors. The influence of microstructure on the properties of the membranes was investigated. The block copolymers had higher water uptake and proton conductivity in comparison with their random analogue.At 80 ℃, the proton conductivities of the block copolymers were above 0. 22 S/cm. The membranes of the block polymers exhibited obvious phase-separation microstructure. The study suggested that some properties could be improved by rational designing of the chemical architecture.
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