质子交换膜是质子交换膜燃料电池(PEMFC)的核心元件之一,以Nafion为代表的全氟磺酸膜的电导率强烈依赖于水含量,而以磺化聚醚醚酮(SPEEK)为代表的磺化芳香族聚合物膜电导率依然有需要改善的空间,这些限制了PEMFC进一步的发展.离子液体具有较高的电导率,优异的热稳定性、电化学稳定性,且不挥发,因此可以替代水在高温下作为质子传递介质,应用于传统质子交换膜性能提升的改性,提高膜的质子电导率和使用温度.文章对近年来离子液体在SPEEK、PS、PBI、PI、PVDF、Nafion等树脂中的应用及质子传递机理进行了综述,阐述了应用中存在的问题及对策,并对研究前景进行了展望.
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