Perfluorinated sulfonic acid durability

Most of the commonly used membranes used in DMFC exhibit acceptable performance stability after thousands of hours under steady-state operation, including perfluorinated sulfonic acid, PTFE-co-HFP radiation-grafted poly- styrenes, and sPAE [85]. However, membrane durability results under unsteady-state operation are stUl scarce. Siroma et al. [114] have shown that a significant fraction of Nation dissolved after 1 week of DMFC operation with methanol solution. 

Inaba M (2009) Chemical degradation of perfluorinated sulfonic acid membranes. In Buechi EN, Inaba M, Schmidt TJ (eds) Polymer electrolyte fuel cell durability. Springer, New York... 

Zhou, C., Guerra, M. A., Qiu, Z.-M., Zawodzinski, T. A., and Schiraldi, D. A. 2007. Chemical durability studies of perfluorinated sulfonic acid polymers and model compounds under mimic fuel cell conditions. Macromolecules 40 8695-8707. 

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