Synthesis and proton conductivity studies of doped azole functional polymer electrolyte membranes
作者： Şehmus Özden , Sevim Ünügür Çelik , Ayhan Bozkurt
DOI: 10.1016/J.ELECTACTA.2010.07.082
关键词:
摘要: Abstract The development of anhydrous proton-conducting membranes is important for the operation polymer electrolyte membrane fuel cell (PEMFC) at intermediate temperature (100–200 °C). In this work, poly(vinylbenzylchloride), PVBC was produced by free radical polymerization 4-vinylbenzylchloride and then it modified with 5-aminotetrazole (ATET) to obtain poly(vinylbenzylaminotetrazole), PVBC-ATET. composition verified elemental analysis (EA) structure characterized FT-IR 13 C NMR spectra. According result, ATET 80% yield. doped trifluoromethanesulfonic acid (TA) various molar ratios, x = 1.25, 2.5, 3.75 respect tetrazole unit. proton transfer from TA rings proved spectroscopy. Thermogravimetry (TG) showed that samples are thermally stable up approximately 200 °C. Differential scanning calorimetry (DSC) results illustrated homogeneity materials. Cyclic voltammetry (CV) study electrochemical stability domain PVBC-ATET-TA 2.5 extends over 3.0 V. conductivity these materials increased dopant concentration temperature. Maximum found be 0.01 S/cm 150 °C in state.
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