从化学退化行为、退化机理以及化学耐久性改善措施方面对全氟质子交换膜的化学耐久性进行了总结,目前的进展表明质子交换膜失效的主要原因是自由基攻击高分子的缺陷末端基团,将羧酸基团还原成二氧化碳和F离子,从而导致树脂高分子开链式分解；羟基自由基来源于双氧水的分解,其产生速度随温度升高而加快、膜中的氢氧气体扩散随湿度降低而增大.因此,在膜中掺杂自由基捕获剂可减少双氧水和自由基的浓度,或者消除高分子的末端缺陷基团有利于提高膜的化学耐久性.
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