Ical degradation method of Nafion-type membranes, investigated in a quantum mechanics
Ical degradation process of Nafion-type membranes, investigated within a quantum mechanics mechanistic study, involving the simultaneous splitting-off in the SO3H group and degradation of your side chainsPolymers 2021, 13, x FOR PEER REVIEWPolymers 2021, 13,14 of13 ofunder the formation of unique splitting items [56]. In the TGA-FTIR coupling experiments, it might be concluded that all of the membranes investigated within this study show outstanding membranes investigatedthermalstudy show outstanding thermal stabilities with thermal the thermal stabilities with within this degradation temperatures being a lot larger than the typical PEMWE electrolyzer operation temperatures prevalent . degradation temperatures being considerably larger than the of 600 PEMWE electrolyzeroperation temperatures of 600 C.FigureFigure eight. TGA-FTIR coupling on the three membranes 3C-BM, RP101988 supplier MBI-MS and Nafion 212; (a): 212; eight. TGA-FTIR coupling benefits results of your three membranes 3C-BM, MBI-MS and Nafion TGA traces in dependence of temperature; (b): S=O FTIR intensity inintensity in dependence of FTIR C=O (a): TGA traces in dependence of temperature; (b): S=O FTIR dependence of T; (c): C=O T; (c): intensity in intensity in dependence of T. FTIR dependence of T.Polymers 2021, 13,Polymers 2021, 13, x FOR PEER REVIEW15 of14 of3.2.3. Electrochemical Impedance in Dependence Temperature 3.two.three. Electrochemical Impedance in Dependence ofof Temperature Electrochemical impedance spectroscopy investigation was performed with the three Electrochemical impedance spectroscopy investigation was performed using the 3 membranes in dependence of temperature from 30 to 110 at aat a PSB-603 GPCR/G Protein humidificationof membranes in dependence of temperature from 30 to 110 , C, humidification rate price of 90 , with a Scribner device. The outcomes of the EIS measurements are displayed in Figure 90 , having a Scribner device. The outcomes in the EIS measurements are displayed in Figure 9. 9.s [mS/cm]Sigma(Nafion212) [mS/cm] Sigma(MBI-MS) [mS/cm] Sigma(3C-BM) [mS/cm]1 30 40 50 60 70 80 90 100T [ ]Figure 9. EIS measurement benefits of your membranes three C-BM, MBI-MS and Nafion212 in dependence of temperature.From Figure 9, it might be observed that the conductivity values are, within the case on the two From Figure 9, it may be seen that the conductivity values are, inside the case in the polyaromatic membranes, drastically decrease than that of Nafion 212, while they show two polyaromatic membranes, drastically lower than that of Nafion 212, despite the fact that they an in situ electrolysis overall performance comparable to that of the Nafion 212. This discrepancy show an in situ electrolysis performance comparable to that with the Nafion 212. This can be explained as follows: Measurements inside the Scribner EIS device are performed in discrepancy is often explained as follows: Measurements in the cells, the membranes are water vapor (humidification degree 90 ), whilst in in situ electrolysis Scribner EIS device performed in water vapor (humidification degree 90 ), though in in situ electrolysis cells, the are in speak to with liquid water. In addition, the difference in water uptake of an ionomembranes are inwhen getting in get in touch with water. In addition, the water uptake) water uptake mer membrane speak to with liquid with liquid water (greater distinction in or water vapor (reduced water uptake) has been identified for many years water (larger water uptake) or of an ionomer membrane when getting in speak to with liquid as Schroeder’s Paradox (an explanation for this behavior is given been.
