Profile of extended chemical stability and mechanical integrity and high hydroxide ion conductivity of poly(ether imide) based membranes for anion exchange membrane fuel cells
作者： Byeong Hun Oh , Ae Rhan Kim , Dong Jin Yoo
DOI: 10.1016/J.IJHYDENE.2018.12.177
关键词:
摘要: Abstract We designed and synthesized a poly(ether imide) (PEI) membrane that has good chemical mechanical stabilities. Alkalized PEI (A-PEI) was fabricated by solution casting of chloromethylated (CM-PEI) followed quaternization alkalization. The structure the polymers verified proton nuclear magnetic resonance (1H NMR) Fourier-transform infrared spectroscopy (FT-IR). Physiochemical properties such as ion exchange capacity, water uptake, swelling ratio were investigated. membranes with high degree chloromethylation (DC) exhibited elevated hydroxide conductivity in range 6.7–44.2 mS/cm at 90 °C under 100% relative humidity (RH). hydrophilic-hydrophobic phase separation atomic force microscope (AFM) small angle X-ray scattering (SAXS) measurements. Chemical stability evaluated measuring durability while they soaked oxidative alkaline solutions 60 °C for 200 h.
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