Studies on the SPEEK membrane with low degree of sulfonation as a stable proton exchange membrane for fuel cell applications

  • سال انتشار: 1395
  • محل انتشار: فصلنامه هیدروژن و پیل سوختی ایران، دوره: 3، شماره: 3
  • کد COI اختصاصی: JR_IJHFC-3-3_005
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 487
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نویسندگان

Mohammad Javad Parnian

School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran

Fatemeh Gashoul

School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran

Soosan Rowshanzamir

School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran/Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology, Narmak, Tehran, Iran

چکیده

Sulfonated poly (ether ether ketone) (SPEEK) with a low degree of sulfonation (DS =40%) was prepared for proton exchange membrane fuel cells (PEMFC). Poly (ether ether ketone) (PEEK) was sulfonated in concentrated H2SO4 under N2 atmosphere and characterized by the hydrogen nuclear magnetic resonance (H-NMR) technique. After preparation of the SPEEK polymer, the obtained polymer was dissolved in dimethylacetamide (DMAC) solvent and then the solution casting method was applied for the fabrication of membranes. Water uptake behavior, ion exchange capacity (IEC), and the proton conductivity at different temperatures and different relative humidity were determined and compared with a commercial Na on 117 membrane. The IEC and the proton conductivity results showed that the sulfonation process successfully created proton conduction channels. In addition, the thermal, mechanical, chemical, and hydrolytic stabilities were thoroughly investigated for the prepared membrane. The low degree of sulfonation SPEEK showed a desirable chemical durability with a higher dimensional, mechanical, and thermal stability than Na on 117 but lower water uptake and proton conductivity.

کلیدواژه ها

Proton exchange membrane,SPEEK,Fuel cell,Stability,

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